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  4. Yamaha DT125R '01 - Running Project

Yamaha DT125R '01 - Running Project

Scheduled Pinned Locked Moved DTR
portingignitech4dldtrwr200
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  • NINJAN NINJA

    @andrewj1680 Oh man, that sure looks damn sweet, and such a shame to do all that work and then get all that lovely shiny metal blacked out. But hey-hoo I get why and it was your choice.

    A Offline
    A Offline
    andrewj1680
    wrote on last edited by
    #84

    @CYBER-NINJA I preferred the polished look but I'd of spent more time polishing it than riding it every time I took it out, Can you imagine trying to avoid every puddle you came across lol that wasn't for me if it's there I'm gonna ride it

    1 Reply Last reply
    0
    • DartyD Offline
      DartyD Offline
      Darty
      wrote on last edited by
      #85

      alt text

      alt text

      (6mm Stainless Steel - Brass 13-14mm spacers)

      I made DXF files for Waterjet cutting - for a Stainless Calliper adapter and spacers for a SM conversion using the 'YZF125' Brembo calliper.

      If there are a few members here looking to do SM conversions, I could get a few kits together with bolts,

      Just a limited run as I have the time for the moment.

      Keep it real

      1 Reply Last reply
      3
      • DartyD Offline
        DartyD Offline
        Darty
        wrote on last edited by Darty
        #86

        32 degrees, sticky rubber, cotswold country lanes, 2strokes and considerable beer intake on par with University life.

        I ride this thing 22 miles a day as a daily to go work, built this thing to be used and I just 'turn it up' a little on the Laptop for a blitz on the weekend somewhere.

        Drawing this project to a close, and enjoying the result, or atleast this iteration of it so far...

        alt text

        I had some clearance issues with the Powervalve under expansion. I removed material in increments by machine sanding.

        alt text

        Custom bracket for the FMF Powercore1 can. Fits on a DTR well.

        alt text

        Built the headlight brackets,

        alt text

        WR400 Face swap.

        alt text

        There is no room left on this bike. Made a mount for the Ignitech Ignition, secure, doesn't suffer from heat exposure and most importantly it's accessible.

        As for cooling, air flow is fine still.

        alt text

        Modified AS3 Silicone WR200 radiator hose's to suit this mongrel application.

        This leads me to something interesting I found,

        alt text

        I needed a new WR200 coolant pipe, turns out later 4BF4 1995' WR200s use a larger 18mm bore coolant pipe.

        I got one brand new old stock from Japan. I've rust protected it, primer and a Gold top coat for a little bling.

        alt text

        Then of course a 4BF4 Waterpump cover is required.

        alt text

        4BF4' Pictured above vs 125R/200R

        alt text

        alt text

        I never knew Yamaha updated the cooling for the WR200, so I had help getting a used one.

        alt text

        IT ONLY JUST FITS... Tight bruuuh. I made a brace for the coolant down pipe as it's just a braised joint and I managed to split my last one like a clot.

        Originally this mounts onto the WR200 Cylinder, so ideally this has to be done to the 125R barrel.

        alt text

        Cooling is now more than adequate,
        alt text

        WR200 Inlet, TM32 fitted. This inlet gives you more angle to use larger carburettor bodies.

        alt text

        WR200 vs DT125R. Inlet tract a little longer, Mounting points have to be modified and crankcase stuffers removed.

        alt text

        New YZ braided brake lines and removable exhaust joint to get the FMF onto the DEP.

        alt text

        (An oldschool mechanical display setup. Dorky but I love this older stuff.

        alt text

        The fun bits. Built to be ridden alot!

        alt text

        Using a base map close to a TZR125 4DL SP, It runs particularly well under 6K.

        This DT now shifts.. I use a 4DL servo setting which utilises the PV opening later than the DT or TDR 3SH.

        alt text

        It's far from perfect, but a safe base tune to run on as this is my daily as the weather is so good.

        alt text
        It's run in properly now, and it is glorious. It sounds fantastic over 10,000rpm.

        Powerband is up at 9,500rpm and it pulls hard to 13,000.

        DTR Gear ratios are perfect for this TZR head and it's acceleration characteristic is spot on, 0-62 less than 6 seconds.

        More to come, more bits from Japan to arrive and then finally a Dyno session with a TM34ss fitted.

        Stay safe!

        Keep it real

        declanD CalumC 3 Replies Last reply
        3
        • DartyD Darty

          32 degrees, sticky rubber, cotswold country lanes, 2strokes and considerable beer intake on par with University life.

          I ride this thing 22 miles a day as a daily to go work, built this thing to be used and I just 'turn it up' a little on the Laptop for a blitz on the weekend somewhere.

          Drawing this project to a close, and enjoying the result, or atleast this iteration of it so far...

          alt text

          I had some clearance issues with the Powervalve under expansion. I removed material in increments by machine sanding.

          alt text

          Custom bracket for the FMF Powercore1 can. Fits on a DTR well.

          alt text

          Built the headlight brackets,

          alt text

          WR400 Face swap.

          alt text

          There is no room left on this bike. Made a mount for the Ignitech Ignition, secure, doesn't suffer from heat exposure and most importantly it's accessible.

          As for cooling, air flow is fine still.

          alt text

          Modified AS3 Silicone WR200 radiator hose's to suit this mongrel application.

          This leads me to something interesting I found,

          alt text

          I needed a new WR200 coolant pipe, turns out later 4BF4 1995' WR200s use a larger 18mm bore coolant pipe.

          I got one brand new old stock from Japan. I've rust protected it, primer and a Gold top coat for a little bling.

          alt text

          Then of course a 4BF4 Waterpump cover is required.

          alt text

          4BF4' Pictured above vs 125R/200R

          alt text

          alt text

          I never knew Yamaha updated the cooling for the WR200, so I had help getting a used one.

          alt text

          IT ONLY JUST FITS... Tight bruuuh. I made a brace for the coolant down pipe as it's just a braised joint and I managed to split my last one like a clot.

          Originally this mounts onto the WR200 Cylinder, so ideally this has to be done to the 125R barrel.

          alt text

          Cooling is now more than adequate,
          alt text

          WR200 Inlet, TM32 fitted. This inlet gives you more angle to use larger carburettor bodies.

          alt text

          WR200 vs DT125R. Inlet tract a little longer, Mounting points have to be modified and crankcase stuffers removed.

          alt text

          New YZ braided brake lines and removable exhaust joint to get the FMF onto the DEP.

          alt text

          (An oldschool mechanical display setup. Dorky but I love this older stuff.

          alt text

          The fun bits. Built to be ridden alot!

          alt text

          Using a base map close to a TZR125 4DL SP, It runs particularly well under 6K.

          This DT now shifts.. I use a 4DL servo setting which utilises the PV opening later than the DT or TDR 3SH.

          alt text

          It's far from perfect, but a safe base tune to run on as this is my daily as the weather is so good.

          alt text
          It's run in properly now, and it is glorious. It sounds fantastic over 10,000rpm.

          Powerband is up at 9,500rpm and it pulls hard to 13,000.

          DTR Gear ratios are perfect for this TZR head and it's acceleration characteristic is spot on, 0-62 less than 6 seconds.

          More to come, more bits from Japan to arrive and then finally a Dyno session with a TM34ss fitted.

          Stay safe!

          declanD Offline
          declanD Offline
          declan
          wrote on last edited by
          #87

          @Darty my power comes in at around 9 but only pulls for a bit is this normal just because you have a fancy set up?

          1 Reply Last reply
          0
          • DartyD Darty

            32 degrees, sticky rubber, cotswold country lanes, 2strokes and considerable beer intake on par with University life.

            I ride this thing 22 miles a day as a daily to go work, built this thing to be used and I just 'turn it up' a little on the Laptop for a blitz on the weekend somewhere.

            Drawing this project to a close, and enjoying the result, or atleast this iteration of it so far...

            alt text

            I had some clearance issues with the Powervalve under expansion. I removed material in increments by machine sanding.

            alt text

            Custom bracket for the FMF Powercore1 can. Fits on a DTR well.

            alt text

            Built the headlight brackets,

            alt text

            WR400 Face swap.

            alt text

            There is no room left on this bike. Made a mount for the Ignitech Ignition, secure, doesn't suffer from heat exposure and most importantly it's accessible.

            As for cooling, air flow is fine still.

            alt text

            Modified AS3 Silicone WR200 radiator hose's to suit this mongrel application.

            This leads me to something interesting I found,

            alt text

            I needed a new WR200 coolant pipe, turns out later 4BF4 1995' WR200s use a larger 18mm bore coolant pipe.

            I got one brand new old stock from Japan. I've rust protected it, primer and a Gold top coat for a little bling.

            alt text

            Then of course a 4BF4 Waterpump cover is required.

            alt text

            4BF4' Pictured above vs 125R/200R

            alt text

            alt text

            I never knew Yamaha updated the cooling for the WR200, so I had help getting a used one.

            alt text

            IT ONLY JUST FITS... Tight bruuuh. I made a brace for the coolant down pipe as it's just a braised joint and I managed to split my last one like a clot.

            Originally this mounts onto the WR200 Cylinder, so ideally this has to be done to the 125R barrel.

            alt text

            Cooling is now more than adequate,
            alt text

            WR200 Inlet, TM32 fitted. This inlet gives you more angle to use larger carburettor bodies.

            alt text

            WR200 vs DT125R. Inlet tract a little longer, Mounting points have to be modified and crankcase stuffers removed.

            alt text

            New YZ braided brake lines and removable exhaust joint to get the FMF onto the DEP.

            alt text

            (An oldschool mechanical display setup. Dorky but I love this older stuff.

            alt text

            The fun bits. Built to be ridden alot!

            alt text

            Using a base map close to a TZR125 4DL SP, It runs particularly well under 6K.

            This DT now shifts.. I use a 4DL servo setting which utilises the PV opening later than the DT or TDR 3SH.

            alt text

            It's far from perfect, but a safe base tune to run on as this is my daily as the weather is so good.

            alt text
            It's run in properly now, and it is glorious. It sounds fantastic over 10,000rpm.

            Powerband is up at 9,500rpm and it pulls hard to 13,000.

            DTR Gear ratios are perfect for this TZR head and it's acceleration characteristic is spot on, 0-62 less than 6 seconds.

            More to come, more bits from Japan to arrive and then finally a Dyno session with a TM34ss fitted.

            Stay safe!

            declanD Offline
            declanD Offline
            declan
            wrote on last edited by
            #88

            @Darty btw that bike is legendary well fucking done man

            DartyD 1 Reply Last reply
            0
            • declanD declan

              @Darty btw that bike is legendary well fucking done man

              DartyD Offline
              DartyD Offline
              Darty
              wrote on last edited by
              #89

              @declan Cheers boss, yeah I guess it hasn't risen much, it's not running right at top end RPM's. Possibly the Reeds failing.

              It's amazing how much more torquey it is than before, it's not a bad commuter bike still πŸ˜‚

              Keep it real

              Stevie WonderS 1 Reply Last reply
              0
              • DartyD Darty

                32 degrees, sticky rubber, cotswold country lanes, 2strokes and considerable beer intake on par with University life.

                I ride this thing 22 miles a day as a daily to go work, built this thing to be used and I just 'turn it up' a little on the Laptop for a blitz on the weekend somewhere.

                Drawing this project to a close, and enjoying the result, or atleast this iteration of it so far...

                alt text

                I had some clearance issues with the Powervalve under expansion. I removed material in increments by machine sanding.

                alt text

                Custom bracket for the FMF Powercore1 can. Fits on a DTR well.

                alt text

                Built the headlight brackets,

                alt text

                WR400 Face swap.

                alt text

                There is no room left on this bike. Made a mount for the Ignitech Ignition, secure, doesn't suffer from heat exposure and most importantly it's accessible.

                As for cooling, air flow is fine still.

                alt text

                Modified AS3 Silicone WR200 radiator hose's to suit this mongrel application.

                This leads me to something interesting I found,

                alt text

                I needed a new WR200 coolant pipe, turns out later 4BF4 1995' WR200s use a larger 18mm bore coolant pipe.

                I got one brand new old stock from Japan. I've rust protected it, primer and a Gold top coat for a little bling.

                alt text

                Then of course a 4BF4 Waterpump cover is required.

                alt text

                4BF4' Pictured above vs 125R/200R

                alt text

                alt text

                I never knew Yamaha updated the cooling for the WR200, so I had help getting a used one.

                alt text

                IT ONLY JUST FITS... Tight bruuuh. I made a brace for the coolant down pipe as it's just a braised joint and I managed to split my last one like a clot.

                Originally this mounts onto the WR200 Cylinder, so ideally this has to be done to the 125R barrel.

                alt text

                Cooling is now more than adequate,
                alt text

                WR200 Inlet, TM32 fitted. This inlet gives you more angle to use larger carburettor bodies.

                alt text

                WR200 vs DT125R. Inlet tract a little longer, Mounting points have to be modified and crankcase stuffers removed.

                alt text

                New YZ braided brake lines and removable exhaust joint to get the FMF onto the DEP.

                alt text

                (An oldschool mechanical display setup. Dorky but I love this older stuff.

                alt text

                The fun bits. Built to be ridden alot!

                alt text

                Using a base map close to a TZR125 4DL SP, It runs particularly well under 6K.

                This DT now shifts.. I use a 4DL servo setting which utilises the PV opening later than the DT or TDR 3SH.

                alt text

                It's far from perfect, but a safe base tune to run on as this is my daily as the weather is so good.

                alt text
                It's run in properly now, and it is glorious. It sounds fantastic over 10,000rpm.

                Powerband is up at 9,500rpm and it pulls hard to 13,000.

                DTR Gear ratios are perfect for this TZR head and it's acceleration characteristic is spot on, 0-62 less than 6 seconds.

                More to come, more bits from Japan to arrive and then finally a Dyno session with a TM34ss fitted.

                Stay safe!

                CalumC Offline
                CalumC Offline
                Calum
                wrote on last edited by
                #90

                @Darty Oh my, yes bud this is fantastic!!!!! πŸ˜„

                Always Originate, Never Pirate!

                1 Reply Last reply
                0
                • MightymanM Offline
                  MightymanM Offline
                  Mightyman
                  wrote on last edited by
                  #91

                  Very interested to see the dyno results!

                  TDR 125 - 2001

                  1 Reply Last reply
                  0
                  • J Offline
                    J Offline
                    Jens Eskildsen
                    wrote on last edited by Jens Eskildsen
                    #92

                    Yeah me 2 πŸ˜ƒ

                    1 Reply Last reply
                    0
                    • C Offline
                      C Offline
                      conmador
                      wrote on last edited by
                      #93

                      hey, are the calipers you designed for the dtx front brake? or is it for dtr front brake? because if it is for dtx front brake i would be interested

                      1 Reply Last reply
                      0
                      • MiniaM Offline
                        MiniaM Offline
                        Minia
                        wrote on last edited by
                        #94

                        Thats a cool dtr!

                        Yamaha DT125R Blue 2002, XT 125 1982, Yamaha WR250Z 1992, BMW GS650F 1994, Benelli BN302 2015

                        1 Reply Last reply
                        0
                        • DartyD Darty

                          @declan Cheers boss, yeah I guess it hasn't risen much, it's not running right at top end RPM's. Possibly the Reeds failing.

                          It's amazing how much more torquey it is than before, it's not a bad commuter bike still πŸ˜‚

                          Stevie WonderS Offline
                          Stevie WonderS Offline
                          Stevie Wonder
                          wrote on last edited by
                          #95

                          @Darty this is what’s sat at the top of my tabs list for the past 4 weeks, your bike build. It’s Mk1 stage with the aprillia headlight and YZ wheels is probably my biggest inspiration for my bike to date. Timeless classic looking crosser and I can’t relp but keep looking at or referring to the pictures of it late at night πŸ˜‰ (when I’m on eBay that is and not a certain other website πŸ˜‚)

                          DartyD 1 Reply Last reply
                          0
                          • Stevie WonderS Stevie Wonder

                            @Darty this is what’s sat at the top of my tabs list for the past 4 weeks, your bike build. It’s Mk1 stage with the aprillia headlight and YZ wheels is probably my biggest inspiration for my bike to date. Timeless classic looking crosser and I can’t relp but keep looking at or referring to the pictures of it late at night πŸ˜‰ (when I’m on eBay that is and not a certain other website πŸ˜‚)

                            DartyD Offline
                            DartyD Offline
                            Darty
                            wrote on last edited by
                            #96

                            @dtStevie98

                            Lost but not forgotten, back on a standard Top end, bent Shifter fork and Clutch issues, bent caliper hanger, seized caliper piston, slightly bent yokes as it turns out from long ago, and the Dep Expansion pipe that is only 65% left in existence.

                            I also dented the tank very badly and cannot pull it out, it's trashed,

                            alt text

                            alt text
                            And the Power-valve which was 'fully sent'. It blew the remaining pin out the exhaust,, I think as the bottom end didn't grenade itself.

                            It was doing 80mph in 5th gear and still pulling, so it was mission accomplished.

                            Full Yeet.

                            Keep it real

                            1 Reply Last reply
                            0
                            • DartyD Offline
                              DartyD Offline
                              Darty
                              wrote on last edited by Darty
                              #97

                              *Nobody

                              ME:

                              *A custom inlet tract for a DT125R.

                              alt text

                              Couple beers and some eyeballing and you can make whatever you want.

                              Getting to old for Pod filters and hacking shit bits together. So if you could, why not re-design OEM equipment in your favour?
                              Knocked these up on Solidworks to be a straight swap into the frame and Airbox.

                              The brief, for my application, getting an inlet tract as straight as possible for 34mm or larger Carburettor to fit around my YZ490 shock, which is way larger than the original DTR unit.

                              alt text

                              alt text

                              Science bitch.

                              alt text

                              I have access to a 3D printer, so I've been designing and making prototypes just for a bit of fun after work,

                              alt text

                              Technology these days....,

                              Keep it real

                              Walney-ReptilesW 1 Reply Last reply
                              4
                              • CalumC Offline
                                CalumC Offline
                                Calum
                                wrote on last edited by
                                #98

                                Lions smart, is it up to the task though...

                                Always Originate, Never Pirate!

                                1 Reply Last reply
                                0
                                • DartyD Darty

                                  *Nobody

                                  ME:

                                  *A custom inlet tract for a DT125R.

                                  alt text

                                  Couple beers and some eyeballing and you can make whatever you want.

                                  Getting to old for Pod filters and hacking shit bits together. So if you could, why not re-design OEM equipment in your favour?
                                  Knocked these up on Solidworks to be a straight swap into the frame and Airbox.

                                  The brief, for my application, getting an inlet tract as straight as possible for 34mm or larger Carburettor to fit around my YZ490 shock, which is way larger than the original DTR unit.

                                  alt text

                                  alt text

                                  Science bitch.

                                  alt text

                                  I have access to a 3D printer, so I've been designing and making prototypes just for a bit of fun after work,

                                  alt text

                                  Technology these days....,

                                  Walney-ReptilesW Offline
                                  Walney-ReptilesW Offline
                                  Walney-Reptiles
                                  wrote on last edited by
                                  #99

                                  @Darty Would you be kind enough to send me the STL file for the intake manifold so i can 3d print this on my printer please buddy?

                                  DartyD 1 Reply Last reply
                                  0
                                  • Walney-ReptilesW Walney-Reptiles

                                    @Darty Would you be kind enough to send me the STL file for the intake manifold so i can 3d print this on my printer please buddy?

                                    DartyD Offline
                                    DartyD Offline
                                    Darty
                                    wrote on last edited by
                                    #100

                                    @Walney-Reptiles Yeh when I've made a working prototype I'll let you know bud,

                                    Keep it real

                                    Walney-ReptilesW 1 Reply Last reply
                                    0
                                    • DartyD Darty

                                      @Walney-Reptiles Yeh when I've made a working prototype I'll let you know bud,

                                      Walney-ReptilesW Offline
                                      Walney-ReptilesW Offline
                                      Walney-Reptiles
                                      wrote on last edited by
                                      #101

                                      @Darty cheers, il have to edit it to fit my carb "When i get it"

                                      1 Reply Last reply
                                      0
                                      • DartyD Offline
                                        DartyD Offline
                                        Darty
                                        wrote on last edited by
                                        #102

                                        Global pandemic huh? returns to shed

                                        Not been doing alot, just wanted to share some bits.

                                        alt text

                                        After 4 years, finally built a proper DTX Brembo Caliper conversion. Threw some Titanium bolts on for some weight saving, and bling.

                                        Custom Bracket and Spacers made, was fun on the old Myford Lathe. Got to force yourself to work in Imperial though...,

                                        alt text

                                        alt text

                                        Plenty of braking power with Ceramic Pads on a 298mm Disc. To manage the DTR Fork, I've rebuilt them with 15W Oil and 35mm Spring Top Hat spacers, this effectively shortens the spring travel and keeps the spring in its stiffest part of the stroke. It works well enough for me at 70kg.

                                        Could be better, but you can pedal this thing hard into mid corner so it feels pretty sorted for road use.

                                        alt text

                                        I've got a USD setup in bits currently, got a set off NOS 1996 YZ250 Forks, if anything, they just look sick.

                                        alt text

                                        I will do a Build thread on installing USD forks for the DTR, as I think many people want to do it but are not sure about the parts needed to do so.

                                        Re-mounted my Ignitech CDI with rubber mounts and polished up my bracket, sadly it seems the company has disappeared. I've never had a problem with my unit and this Programmable CDI is the best thing I ever bought for this project.

                                        alt text

                                        The spark on this thing is ridiculously good.

                                        alt text

                                        I couldn't be bothered to fix my ported 3MB 'P' 134cc Cylinder so i went back to my old 14,000 Mile standard bore 3MB
                                        Cylinder with a TDR unrestricted Head, and it has been so much fun to ride. Just a torqueey reliable DT engine like I remember it when I was 17.

                                        QUICK ENOUGH LOL

                                        alt text

                                        Been running different carbs for a few years now, and I have to say you couldnt do much better than well Setup Mikuni TM28ss and the 30ss from a WR200 is brilliant for the 125R.., depending on how good you can setup the floats and mixture.

                                        This is the problem with any carburettor using the standard Inlet,

                                        alt text

                                        MIKUNI TM28SS - TM30SS - TM32 - TM34SS - KEIHIN PWK36

                                        alt text

                                        My favourite so far has been setting up a Mikuni TM34SS from a Aprilia RS250 and Later model RGV250s, (Same engine)

                                        Mainly, the Venturi is angled so the Fuel Bowl remains level. But it has a really effective power jet and has been easy to setup, it works really well with just 125cc, this engine barks and pulls great at Mid-Range too. For me, I pretty happy keeping this engine under 140cc. It's plenty fun.

                                        alt text

                                        I'm using a Modified WR200 Inlet with Boyseen DT200R Reeds. Runs good.

                                        I have a 3D printed Airbox to Carb boot I designed, so it's water tight and easier to jet than a Pod Filter.

                                        Currently waiting to print a new filament that has the right Shore Hardness to produce a rubber part like the original. You need a good amount of flex to seat the airbox and carb together.

                                        alt text

                                        This has all been paired with old Nikkon Race exhaust, Handmade, Gas welded steel. There is pretty much no info on these.

                                        I bought this from a guy who used it a couple of times and then stored it for 10 years, as far as I know this is the only DT125R Nikkon pipe left in existence. Which is a shame, because this pipe is so much better than the DEP on the road.

                                        I'm going to copy this pipe into Stainless steel and just keep it the way it is because it suites my application so well. Very large expansion pipe aswell, the design is unique.

                                        Will go further into the restoration of it as it's currently covered in BBQ Black paint.

                                        alt text

                                        Long term project aye, I've already had my fun.

                                        Keep it real

                                        NINJAN declanD J Louis-DT-WRL finchfockerF 5 Replies Last reply
                                        3
                                        • DartyD Darty

                                          Global pandemic huh? returns to shed

                                          Not been doing alot, just wanted to share some bits.

                                          alt text

                                          After 4 years, finally built a proper DTX Brembo Caliper conversion. Threw some Titanium bolts on for some weight saving, and bling.

                                          Custom Bracket and Spacers made, was fun on the old Myford Lathe. Got to force yourself to work in Imperial though...,

                                          alt text

                                          alt text

                                          Plenty of braking power with Ceramic Pads on a 298mm Disc. To manage the DTR Fork, I've rebuilt them with 15W Oil and 35mm Spring Top Hat spacers, this effectively shortens the spring travel and keeps the spring in its stiffest part of the stroke. It works well enough for me at 70kg.

                                          Could be better, but you can pedal this thing hard into mid corner so it feels pretty sorted for road use.

                                          alt text

                                          I've got a USD setup in bits currently, got a set off NOS 1996 YZ250 Forks, if anything, they just look sick.

                                          alt text

                                          I will do a Build thread on installing USD forks for the DTR, as I think many people want to do it but are not sure about the parts needed to do so.

                                          Re-mounted my Ignitech CDI with rubber mounts and polished up my bracket, sadly it seems the company has disappeared. I've never had a problem with my unit and this Programmable CDI is the best thing I ever bought for this project.

                                          alt text

                                          The spark on this thing is ridiculously good.

                                          alt text

                                          I couldn't be bothered to fix my ported 3MB 'P' 134cc Cylinder so i went back to my old 14,000 Mile standard bore 3MB
                                          Cylinder with a TDR unrestricted Head, and it has been so much fun to ride. Just a torqueey reliable DT engine like I remember it when I was 17.

                                          QUICK ENOUGH LOL

                                          alt text

                                          Been running different carbs for a few years now, and I have to say you couldnt do much better than well Setup Mikuni TM28ss and the 30ss from a WR200 is brilliant for the 125R.., depending on how good you can setup the floats and mixture.

                                          This is the problem with any carburettor using the standard Inlet,

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                                          MIKUNI TM28SS - TM30SS - TM32 - TM34SS - KEIHIN PWK36

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                                          My favourite so far has been setting up a Mikuni TM34SS from a Aprilia RS250 and Later model RGV250s, (Same engine)

                                          Mainly, the Venturi is angled so the Fuel Bowl remains level. But it has a really effective power jet and has been easy to setup, it works really well with just 125cc, this engine barks and pulls great at Mid-Range too. For me, I pretty happy keeping this engine under 140cc. It's plenty fun.

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                                          I'm using a Modified WR200 Inlet with Boyseen DT200R Reeds. Runs good.

                                          I have a 3D printed Airbox to Carb boot I designed, so it's water tight and easier to jet than a Pod Filter.

                                          Currently waiting to print a new filament that has the right Shore Hardness to produce a rubber part like the original. You need a good amount of flex to seat the airbox and carb together.

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                                          This has all been paired with old Nikkon Race exhaust, Handmade, Gas welded steel. There is pretty much no info on these.

                                          I bought this from a guy who used it a couple of times and then stored it for 10 years, as far as I know this is the only DT125R Nikkon pipe left in existence. Which is a shame, because this pipe is so much better than the DEP on the road.

                                          I'm going to copy this pipe into Stainless steel and just keep it the way it is because it suites my application so well. Very large expansion pipe aswell, the design is unique.

                                          Will go further into the restoration of it as it's currently covered in BBQ Black paint.

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                                          Long term project aye, I've already had my fun.

                                          NINJAN Offline
                                          NINJAN Offline
                                          NINJA
                                          wrote on last edited by
                                          #103

                                          @Darty Looking damn good my man!!! πŸ‘

                                          SEDUCED BY THE DARK SIDE!!!

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