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DT125R FORUM

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  4. Yamaha DT125R '01 - Running Project

Yamaha DT125R '01 - Running Project

Scheduled Pinned Locked Moved DTR
portingignitech4dldtrwr200
135 Posts 27 Posters 91.2k Views 6 Watching
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  • DartyD Darty

    @CYBER-NINJA I ended up getting some made in various lengths for testing, but Have not put them on yet. I've got FZR 150mm tie bars and they are too long, but thanks for the offer, those Lusty's are nice quality tbf.

    NINJAN Offline
    NINJAN Offline
    NINJA
    wrote on last edited by
    #39

    @Darty NP's dude, if anyone else wants my expensive paper weights then please contact me. ;O)

    SEDUCED BY THE DARK SIDE!!!

    1 Reply Last reply
    0
    • DartyD Darty

      @CYBER-NINJA I ended up getting some made in various lengths for testing, but Have not put them on yet. I've got FZR 150mm tie bars and they are too long, but thanks for the offer, those Lusty's are nice quality tbf.

      NINJAN Offline
      NINJAN Offline
      NINJA
      wrote on last edited by
      #40

      @Darty What size rims and tyres are you running there dude please? And are they laced to stock hubs too???

      SEDUCED BY THE DARK SIDE!!!

      DartyD 1 Reply Last reply
      0
      • NINJAN NINJA

        @Darty What size rims and tyres are you running there dude please? And are they laced to stock hubs too???

        DartyD Offline
        DartyD Offline
        Darty
        wrote on last edited by
        #41

        @CYBER-NINJA I'm using OEM wheels from the DTX version 05'-07' It's a DT rear hub as standard and a not so nice front hub specific to these wheels, the WR125X runs the same hubs, but not excel brand rims. Factory SM's

        140/70/ 17"

        Keep it real

        1 Reply Last reply
        0
        • DartyD Offline
          DartyD Offline
          Darty
          wrote on last edited by Darty
          #42

          Finally put on my new drop links.. Tie bars.. dog bones.. whatever you like..

          alt text

          Water cut 7mm Stainless steel, I drew the pivots at 15.5mm to compensate for the distortion water cutting creates cutting through, essentially the water jet blasts through creating a slight taper on exit, it's like firing a cone shape rather than a straight beam.

          alt text

          alt text

          Got a very sharp 16mm drill bit which gives the exact fit you need. Then a sand and polish.

          alt text

          Changed the design a little and went for a continuous sweep, got to love CAD ay.

          alt text

          I went for 130mm versions instead and it now sits perfectly, she's niiiice and sharp now and handles pretty bloody well for a DT.

          The rear does look ridiculous.. hot rod stance not to my liking. Those portugal rear mudguards are a wacky fit on the tabs, need something else YZ to chop up.

          alt text

          ASV clutch lever was a score, and it's lush to use..after a thorough grit removal rebuild. far superior than my 'eBay special' perch on before. But I had to move the switch gear over for clearance, and just cannot stop fumbling because it's out of reach to my thumb. I'm always having to look at it first.. lol seriously this does get at me, but clutch is more important in this case.

          alt text

          The best thing is that I can still fit my DT handguards on, Thank you ASV, much obliged. Those guard threads are a god send.

          alt text

          Because Race bike. But no seriously don't mess with the Airbox on a DT. It's perfect as standard. I've opened up the side and top to a 'maximum' I reckon. Remember you need to control the flow of air for good induction,

          I've just been messing around and after many shitty test rides and a million jets and needle adjustments it's running sweet. And it sounds like it should, all in vain for increased throttle response and overrev, not such a daily driver anymore though.

          alt text
          alt text

          The rest is an embarrassment, rust is taking over, a bit of Hydrate 80 rust prevention and a bit of black spray just to stop it disintegrating away. Always a great play bike if it's already battered.

          Bring on the summer,

          Keep it real

          Biker_123B 1 Reply Last reply
          2
          • DartyD Darty

            Finally put on my new drop links.. Tie bars.. dog bones.. whatever you like..

            alt text

            Water cut 7mm Stainless steel, I drew the pivots at 15.5mm to compensate for the distortion water cutting creates cutting through, essentially the water jet blasts through creating a slight taper on exit, it's like firing a cone shape rather than a straight beam.

            alt text

            alt text

            Got a very sharp 16mm drill bit which gives the exact fit you need. Then a sand and polish.

            alt text

            Changed the design a little and went for a continuous sweep, got to love CAD ay.

            alt text

            I went for 130mm versions instead and it now sits perfectly, she's niiiice and sharp now and handles pretty bloody well for a DT.

            The rear does look ridiculous.. hot rod stance not to my liking. Those portugal rear mudguards are a wacky fit on the tabs, need something else YZ to chop up.

            alt text

            ASV clutch lever was a score, and it's lush to use..after a thorough grit removal rebuild. far superior than my 'eBay special' perch on before. But I had to move the switch gear over for clearance, and just cannot stop fumbling because it's out of reach to my thumb. I'm always having to look at it first.. lol seriously this does get at me, but clutch is more important in this case.

            alt text

            The best thing is that I can still fit my DT handguards on, Thank you ASV, much obliged. Those guard threads are a god send.

            alt text

            Because Race bike. But no seriously don't mess with the Airbox on a DT. It's perfect as standard. I've opened up the side and top to a 'maximum' I reckon. Remember you need to control the flow of air for good induction,

            I've just been messing around and after many shitty test rides and a million jets and needle adjustments it's running sweet. And it sounds like it should, all in vain for increased throttle response and overrev, not such a daily driver anymore though.

            alt text
            alt text

            The rest is an embarrassment, rust is taking over, a bit of Hydrate 80 rust prevention and a bit of black spray just to stop it disintegrating away. Always a great play bike if it's already battered.

            Bring on the summer,

            Biker_123B Offline
            Biker_123B Offline
            Biker_123
            wrote on last edited by
            #43

            @Darty those dog bones are awesome mate!! You've made such a good job of them the bike looks fantastic the way it's sitting 👍🏻

            Every problem has a solution

            DartyD 1 Reply Last reply
            0
            • Biker_123B Biker_123

              @Darty those dog bones are awesome mate!! You've made such a good job of them the bike looks fantastic the way it's sitting 👍🏻

              DartyD Offline
              DartyD Offline
              Darty
              wrote on last edited by
              #44

              @Biker_123 ahh safe, I can put up the DXF files if you want some? Got 2pairs cut for £10 down my end.

              Keep it real

              Biker_123B 1 Reply Last reply
              1
              • DartyD Darty

                @Biker_123 ahh safe, I can put up the DXF files if you want some? Got 2pairs cut for £10 down my end.

                Biker_123B Offline
                Biker_123B Offline
                Biker_123
                wrote on last edited by
                #45

                @Darty Sounds good yeah please! 😃 really need to do some more work on my project and replacing the dog bones is high on that list along with a 520 chain conversion.

                Every problem has a solution

                1 Reply Last reply
                0
                • CalumC Offline
                  CalumC Offline
                  Calum
                  wrote on last edited by
                  #46

                  Yes mate that stance is lovely!

                  Coming along nicely. Really loving this build!

                  Nothing to be ashamed about. Yeah it's rot, but actually the quality of metal used is very good. I bet it's surface whicvh will come out fine!

                  Always Originate, Never Pirate!

                  1 Reply Last reply
                  0
                  • DartyD Offline
                    DartyD Offline
                    Darty
                    wrote on last edited by
                    #47

                    @Biker_123 DXF files were drawn using Solid Works, I'm not sure what programs you might have to open these, but send these to any good company and they should know what's going on.

                    https://www.dropbox.com/s/6aropyq2sjczw0z/Tie Bar 130mm x 6mm 1.dxf?dl=0

                    https://www.dropbox.com/s/0bj1uprutg8im74/TIE BAR 120mm x 6 Reform1.DXF?dl=0

                    Enjoy!

                    Next up is a custom intake, really needed I reckon 32-36mm intake,

                    Will put up a plan after I get it made

                    Keep it real

                    Biker_123B 1 Reply Last reply
                    1
                    • D Offline
                      D Offline
                      Dt-r_Bradders
                      wrote on last edited by
                      #48

                      What an awesome build man im loving this! top job m8y

                      1 Reply Last reply
                      1
                      • DartyD Darty

                        @Biker_123 DXF files were drawn using Solid Works, I'm not sure what programs you might have to open these, but send these to any good company and they should know what's going on.

                        https://www.dropbox.com/s/6aropyq2sjczw0z/Tie Bar 130mm x 6mm 1.dxf?dl=0

                        https://www.dropbox.com/s/0bj1uprutg8im74/TIE BAR 120mm x 6 Reform1.DXF?dl=0

                        Enjoy!

                        Next up is a custom intake, really needed I reckon 32-36mm intake,

                        Will put up a plan after I get it made

                        Biker_123B Offline
                        Biker_123B Offline
                        Biker_123
                        wrote on last edited by
                        #49

                        @Darty Thanks man 🙂 I'll have a look at these on the comp! Much appreciated.

                        Every problem has a solution

                        1 Reply Last reply
                        0
                        • V Offline
                          V Offline
                          vtrn_raptor
                          wrote on last edited by
                          #50

                          How did you make the bracket for the front brake

                          DartyD 1 Reply Last reply
                          0
                          • V vtrn_raptor

                            How did you make the bracket for the front brake

                            DartyD Offline
                            DartyD Offline
                            Darty
                            wrote on last edited by Darty
                            #51

                            @vtrn_raptor Hand sawed. filed, and machine sanded, you will need a Pillar drill!

                            I've only got a sketch you can follow, dimensions are rough and only for a YZF125 caliper that was modified. should be 68.5mm of the fork. I use 15mm spacers now of the hanger.

                            alt text

                            I started with NEV's example for a DTX caliper, and modified the fitments. If you have a DTX caliper then NEV's dimensions should be on point for you.

                            alt text

                            Create mock-ups and check your offset position thoroughly, CNC Steel alloy is a better option than ally.

                            Keep it real

                            1 Reply Last reply
                            1
                            • V Offline
                              V Offline
                              vtrn_raptor
                              wrote on last edited by
                              #52

                              I really need to find someone who can make me one for the standard dt brake caliper as I don't have to tool to do it myself:(

                              1 Reply Last reply
                              0
                              • DartyD Darty

                                Hi, Thank you.

                                Yeah.. a Zeely would be nice to be honest.

                                I have followed your project for a while and it is very impressive, I have had my DT for a couple of years now. And yeah completely stock (De-restricted) of course, has been the best performance so far. And to answer the question of the Pre -94' CDI vs Later years 99' on bikes. Well. It's pretty close between them haha. Good times.

                                A little note, the older 3 wire DT's have a much more raw engine noise on tick over. Yamaha redesigned the stator motor with much else after 99'. Older models really have the right engine noise. Exhaust noise very much the same for all models on a DEP though, no missing out.

                                alt text

                                alt text

                                Jeez. You should see the state of it now 7,000 miles later. I rode it hard. It is need of a full restoration. Mechanically supreme however. The fit and finish is the last thing I can be bothered with.

                                alt text

                                Hard hit.

                                Yes. The Lanza. I've seen only ever seen about 3 or 4 on eVil bay. They were never really imported here much by anyone it looks like. I know Yamaha never sold em in the UK- like the DT200R(3ET). I could never find any parts. I am considering a DT200R Alloy swinger - from Australia.. That is the easiest weight saving option out there I think. But not sure. I want the wheel base to be a bit longer on it really, so an extra 2" of YZ alloy or WR and fettling time seems a more pleasing upgrade, but where do you stop. I cant make my mind up.

                                Yeah still got my eyes on any TDR - TZRR stuff at the moment. It is getting the bigger inlet that would be a score for me.

                                Anyway, I'll keep from talking about it and get some updates up here. I'll see if there is anything useful I know.

                                Quickly as well, do you rate Mick Abbey tuning? Your barrel looked good but I don't want to rework anything.

                                Thanks for the links.

                                aidan1996A Offline
                                aidan1996A Offline
                                aidan1996
                                wrote on last edited by
                                #53

                                @Darty hello
                                would you say IGNITECH was a good upgrade and where do you buy it

                                got a dtre x 2005

                                DartyD 1 Reply Last reply
                                0
                                • aidan1996A aidan1996

                                  @Darty hello
                                  would you say IGNITECH was a good upgrade and where do you buy it

                                  got a dtre x 2005

                                  DartyD Offline
                                  DartyD Offline
                                  Darty
                                  wrote on last edited by
                                  #54

                                  @aidan1996 I recommend it, try and learn a bit about Ignition Timing and Powervalve setup before you buy to make the most of it.

                                  Ignitech systems are made to order, so just send them an Email and state your desired Model and/or loom type.

                                  Keep it real

                                  aidan1996A 1 Reply Last reply
                                  0
                                  • DartyD Darty

                                    @aidan1996 I recommend it, try and learn a bit about Ignition Timing and Powervalve setup before you buy to make the most of it.

                                    Ignitech systems are made to order, so just send them an Email and state your desired Model and/or loom type.

                                    aidan1996A Offline
                                    aidan1996A Offline
                                    aidan1996
                                    wrote on last edited by
                                    #55

                                    @Darty website???
                                    zeeltronic or ignitech

                                    would you say the ignitech made a difference from the stock cdi ypvs ????????????????

                                    1 Reply Last reply
                                    0
                                    • CalumC Offline
                                      CalumC Offline
                                      Calum
                                      wrote on last edited by
                                      #56

                                      A Custom ignition, either or, will be a dramatic improvement. Shouldn't be any difference.

                                      Always Originate, Never Pirate!

                                      1 Reply Last reply
                                      0
                                      • DartyD Offline
                                        DartyD Offline
                                        Darty
                                        wrote on last edited by Darty
                                        #57

                                        Some little bits.

                                        alt text

                                        Removing material to clear the flanged nut I'm using off the fork leg for the correct position. Renewed this bit a while ago, the YZF carrier is not the best idea.

                                        alt text

                                        Finished setup for now, Lathed up 16mm Brass spacers and fitted together with 10.4 HT bolts.

                                        alt text

                                        98' YZ 250 1/4 throttle with billet alloy throttle tube, is plush like em snappy

                                        alt text

                                        New ceramic resistor.

                                        alt text

                                        Trying to keep Jap with a Denso W27ES-U plug. £1.70!

                                        alt text

                                        Call me the 'Artful bodger' Ran into some issues just using a capacitor to run the Ignitech. So strapped in ol' faithful in what's left of the only space available on the bike.

                                        alt text

                                        Slowly rebuilding my TM32. Sanded, wet sanded and polished internals.

                                        alt text

                                        alt text

                                        Satisfied like glass. Giving a helping hand to the inevitable ingress of dirt to be combusted.

                                        alt text

                                        Remounting the WR rad, cutting the thermostat housing down, deleting the oil tank cap fixture from the support and shortening the rear radiator outlet futher to clear the tank. Then moving the whole thing forward to sit flush and safe.

                                        alt text

                                        Having alot of fun tearing it about, led me to ignore a serious issue. After letting the chain eat my original WR200 chain guide and very good condition Delta-box swinger, it was time to go back and fit plan A.
                                        alt text

                                        Drilled and M6 taped new mounts. Didn't feel like sacrilege after fucking it over already.

                                        alt text

                                        I wanted to do this for ages, fitting a YZ/WR 98'-02' chain guide looked to fit in my head. Can now replace it without having to take the swinger off, and readily available to replace now, as WR200 and early YZ 1990-94' sliders are rare, or silly money new.

                                        alt text

                                        Ugraded to RFX slider in blue, made from a hard polypropylene instead of silicone rubber. Should do the trick.

                                        Running the airbox door removed and older 3MB airbox tract now with a 450 Main jet can you believe. It's now absolutely perfect with peak power dropping away at about 10,900rpm. She sings. Ready for my new ported top end. Looking to go full road racer at 12,600rpm with the larger carb.
                                        alt text

                                        Shortened the chain, back on a Steel sprocket with a 45T 520, good for 80 again which was missed,

                                        alt text

                                        I always preferred the original clutch cases, got a nice oil pump housing design. Had to use my 4DL one.

                                        alt text

                                        Standard (left) vs EBC's heavy duty clutch spring. Good upgrade, firm clutch with a quicker release.
                                        alt text

                                        New EBC clutch plates a while back had trashed my gearbox oil, found this, cause race bike..

                                        alt text

                                        Threaded insert and bolt for oil pump delete, re-sharpened foot pegs and brake pedal from the trail bike days.

                                        Keep it real

                                        CalumC 1 Reply Last reply
                                        4
                                        • DartyD Darty

                                          Some little bits.

                                          alt text

                                          Removing material to clear the flanged nut I'm using off the fork leg for the correct position. Renewed this bit a while ago, the YZF carrier is not the best idea.

                                          alt text

                                          Finished setup for now, Lathed up 16mm Brass spacers and fitted together with 10.4 HT bolts.

                                          alt text

                                          98' YZ 250 1/4 throttle with billet alloy throttle tube, is plush like em snappy

                                          alt text

                                          New ceramic resistor.

                                          alt text

                                          Trying to keep Jap with a Denso W27ES-U plug. £1.70!

                                          alt text

                                          Call me the 'Artful bodger' Ran into some issues just using a capacitor to run the Ignitech. So strapped in ol' faithful in what's left of the only space available on the bike.

                                          alt text

                                          Slowly rebuilding my TM32. Sanded, wet sanded and polished internals.

                                          alt text

                                          alt text

                                          Satisfied like glass. Giving a helping hand to the inevitable ingress of dirt to be combusted.

                                          alt text

                                          Remounting the WR rad, cutting the thermostat housing down, deleting the oil tank cap fixture from the support and shortening the rear radiator outlet futher to clear the tank. Then moving the whole thing forward to sit flush and safe.

                                          alt text

                                          Having alot of fun tearing it about, led me to ignore a serious issue. After letting the chain eat my original WR200 chain guide and very good condition Delta-box swinger, it was time to go back and fit plan A.
                                          alt text

                                          Drilled and M6 taped new mounts. Didn't feel like sacrilege after fucking it over already.

                                          alt text

                                          I wanted to do this for ages, fitting a YZ/WR 98'-02' chain guide looked to fit in my head. Can now replace it without having to take the swinger off, and readily available to replace now, as WR200 and early YZ 1990-94' sliders are rare, or silly money new.

                                          alt text

                                          Ugraded to RFX slider in blue, made from a hard polypropylene instead of silicone rubber. Should do the trick.

                                          Running the airbox door removed and older 3MB airbox tract now with a 450 Main jet can you believe. It's now absolutely perfect with peak power dropping away at about 10,900rpm. She sings. Ready for my new ported top end. Looking to go full road racer at 12,600rpm with the larger carb.
                                          alt text

                                          Shortened the chain, back on a Steel sprocket with a 45T 520, good for 80 again which was missed,

                                          alt text

                                          I always preferred the original clutch cases, got a nice oil pump housing design. Had to use my 4DL one.

                                          alt text

                                          Standard (left) vs EBC's heavy duty clutch spring. Good upgrade, firm clutch with a quicker release.
                                          alt text

                                          New EBC clutch plates a while back had trashed my gearbox oil, found this, cause race bike..

                                          alt text

                                          Threaded insert and bolt for oil pump delete, re-sharpened foot pegs and brake pedal from the trail bike days.

                                          CalumC Offline
                                          CalumC Offline
                                          Calum
                                          wrote on last edited by
                                          #58

                                          @Darty Yes mate that's looking the tits!

                                          Keep the updates rolling.

                                          Always Originate, Never Pirate!

                                          DartyD 1 Reply Last reply
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