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DT125R FORUM

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  4. My DT125 80s Yz style DT200 build one to watch!

My DT125 80s Yz style DT200 build one to watch!

Scheduled Pinned Locked Moved DTR
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  • S SpookDog

    @mhbikesnbits

    1 spring 1 bearing IIRC

    M Offline
    M Offline
    mhbikesnbits
    wrote on last edited by
    #192

    @SpookDog of course a spring never thought of that cheers

    S 1 Reply Last reply
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    • M mhbikesnbits

      @SpookDog of course a spring never thought of that cheers

      S Offline
      S Offline
      SpookDog
      wrote on last edited by SpookDog
      #193

      @mhbikesnbits

      You are on about the kick start, where it swivels?
      I can’t remember if the spring sits into the kickstart ‘arm’ or through the middle of the ‘knuckle’ bit that bolts to the shaft on the engine. If it’s the knuckle then it will be two bearings and a spring in the middle...

      I think the spring is recessed into the ‘fat part’ of the kickstart arm, with a bearing facing the swivel part of the ‘knuckle ‘...
      You’re gonna have to excuse me! My memory is like my virginity: I used to have one but lost it a long time ago 👻

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      • S SpookDog

        @mhbikesnbits

        You are on about the kick start, where it swivels?
        I can’t remember if the spring sits into the kickstart ‘arm’ or through the middle of the ‘knuckle’ bit that bolts to the shaft on the engine. If it’s the knuckle then it will be two bearings and a spring in the middle...

        I think the spring is recessed into the ‘fat part’ of the kickstart arm, with a bearing facing the swivel part of the ‘knuckle ‘...
        You’re gonna have to excuse me! My memory is like my virginity: I used to have one but lost it a long time ago 👻

        M Offline
        M Offline
        mhbikesnbits
        wrote on last edited by
        #194

        @SpookDog that’s the bit I’m on about I didn’t notice a spring when I took it apart, but by sounds of it the it’s sits in the knuckle that’s bolts to the engine as the hole is quite deep on that end and the arm has a groove for the ball bearing

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        • M Offline
          M Offline
          mhbikesnbits
          wrote on last edited by mhbikesnbits
          #195

          Getting use to this forum again it’s becoming like a daily blog to me 😅

          I’ve got some of this really nice braided mesh loom stuff I decided to do away with the plastic rubbish on the switch gear and replace with this I think it’s a much improvement

          What do you guys think ?

          Will be doing most of the wiring with this when I get round to it

          Also has anyone done much to to make the switch gear plastics look better only thing I can think of really is just plastic polish

          (Obviously photos don’t show it as well)

          alt text

          alt text

          alt text

          markus.wM 1 Reply Last reply
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          • M mhbikesnbits

            Getting use to this forum again it’s becoming like a daily blog to me 😅

            I’ve got some of this really nice braided mesh loom stuff I decided to do away with the plastic rubbish on the switch gear and replace with this I think it’s a much improvement

            What do you guys think ?

            Will be doing most of the wiring with this when I get round to it

            Also has anyone done much to to make the switch gear plastics look better only thing I can think of really is just plastic polish

            (Obviously photos don’t show it as well)

            alt text

            alt text

            alt text

            markus.wM Offline
            markus.wM Offline
            markus.w
            wrote on last edited by
            #196

            @mhbikesnbits yes I really like that. Where can I get some from or what is it called? Also does it go over the plastic or did you strip the plastic sleeve first?

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            • markus.wM markus.w

              @mhbikesnbits yes I really like that. Where can I get some from or what is it called? Also does it go over the plastic or did you strip the plastic sleeve first?

              M Offline
              M Offline
              mhbikesnbits
              wrote on last edited by
              #197

              @markus-w I got a kit with different sizes from a website called revival cycles

              markus.wM 1 Reply Last reply
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              • M mhbikesnbits

                @markus-w I got a kit with different sizes from a website called revival cycles

                markus.wM Offline
                markus.wM Offline
                markus.w
                wrote on last edited by
                #198

                @mhbikesnbits thank you I will take a look.

                CalumC 1 Reply Last reply
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                • markus.wM markus.w

                  @mhbikesnbits thank you I will take a look.

                  CalumC Offline
                  CalumC Offline
                  Calum
                  wrote on last edited by
                  #199

                  @mhbikesnbits Looks smart, is it designed for motorbike looms? Does it wick away water from the loom? I'd be worried if it saturates water and retains it.

                  Looks smart though.

                  Always Originate, Never Pirate!

                  M 1 Reply Last reply
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                  • CalumC Calum

                    @mhbikesnbits Looks smart, is it designed for motorbike looms? Does it wick away water from the loom? I'd be worried if it saturates water and retains it.

                    Looks smart though.

                    M Offline
                    M Offline
                    mhbikesnbits
                    wrote on last edited by
                    #200

                    @Calum yes they sell it for doing looms like custom looms from scratch aimed at custom motorcycles and stuff it’s good stuff, the company have got a video on it on the site

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                    • M Offline
                      M Offline
                      mhbikesnbits
                      wrote on last edited by mhbikesnbits
                      #201

                      Added this for a little protection where the triple clamp hits the frame

                      alt text

                      Picked up a dt200r alloy swing arm from Australia should be a nice edition, bit lighter weight and going look nice once I’ve done the lovely task of polishing and shining up

                      Also got offered some discount on a all balls bearing kit £35 for the restoration of the swing arm, not bad can also take the sizes and look at building my own kits to sell along with the suspension arm joint bearing and seal kit.

                      S 1 Reply Last reply
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                      • M mhbikesnbits

                        Added this for a little protection where the triple clamp hits the frame

                        alt text

                        Picked up a dt200r alloy swing arm from Australia should be a nice edition, bit lighter weight and going look nice once I’ve done the lovely task of polishing and shining up

                        Also got offered some discount on a all balls bearing kit £35 for the restoration of the swing arm, not bad can also take the sizes and look at building my own kits to sell along with the suspension arm joint bearing and seal kit.

                        S Offline
                        S Offline
                        SpookDog
                        wrote on last edited by
                        #202

                        @mhbikesnbits

                        Bud! That won’t last five minutes.

                        M 1 Reply Last reply
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                        • S SpookDog

                          @mhbikesnbits

                          Bud! That won’t last five minutes.

                          M Offline
                          M Offline
                          mhbikesnbits
                          wrote on last edited by
                          #203

                          @SpookDog did cross my mind well I’ll try it if it falls off it falls off 😂

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                          • M Offline
                            M Offline
                            mhbikesnbits
                            wrote on last edited by mhbikesnbits
                            #204

                            Sorry for the lack of updates been busy with some other stuff, not really done much to the bike, come to the stage where I need some parts, The alloy swinger is here looking forward to getting it shined up should look the part on the bike.

                            This is my next task get this cleaned and polished was curious about the weight difference in this and a 125 steel one turns out it’s between 700-800 grams lighter according to my scales

                            alt text

                            alt text

                            alt text

                            CalumC 1 Reply Last reply
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                            • M mhbikesnbits

                              Sorry for the lack of updates been busy with some other stuff, not really done much to the bike, come to the stage where I need some parts, The alloy swinger is here looking forward to getting it shined up should look the part on the bike.

                              This is my next task get this cleaned and polished was curious about the weight difference in this and a 125 steel one turns out it’s between 700-800 grams lighter according to my scales

                              alt text

                              alt text

                              alt text

                              CalumC Offline
                              CalumC Offline
                              Calum
                              wrote on last edited by
                              #205

                              @mhbikesnbits Not a HUGE weight saving...but replace the bolts with Titanium and what not and you could be laughing.

                              I replaced the front engine mount with a titanium bolt and that's a good few gs saved. All adds up.

                              Always Originate, Never Pirate!

                              M 1 Reply Last reply
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                              • CalumC Calum

                                @mhbikesnbits Not a HUGE weight saving...but replace the bolts with Titanium and what not and you could be laughing.

                                I replaced the front engine mount with a titanium bolt and that's a good few gs saved. All adds up.

                                M Offline
                                M Offline
                                mhbikesnbits
                                wrote on last edited by
                                #206

                                @Calum you know you lift a steel one up and then the aluminium one and it feels so much lighter , I was surprised myself it was only that much different unless the scales lie 😅

                                Should save little more weight swapping from steel rims to alloy too and some other bits here and there maybe, we shall see

                                Titanium stuff has crossed my mind

                                S 1 Reply Last reply
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                                • M mhbikesnbits

                                  @Calum you know you lift a steel one up and then the aluminium one and it feels so much lighter , I was surprised myself it was only that much different unless the scales lie 😅

                                  Should save little more weight swapping from steel rims to alloy too and some other bits here and there maybe, we shall see

                                  Titanium stuff has crossed my mind

                                  S Offline
                                  S Offline
                                  SpookDog
                                  wrote on last edited by
                                  #207

                                  @mhbikesnbits

                                  3/4 of a kilo is not to be sneezed at! 🙂

                                  M 1 Reply Last reply
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                                  • S SpookDog

                                    @mhbikesnbits

                                    3/4 of a kilo is not to be sneezed at! 🙂

                                    M Offline
                                    M Offline
                                    mhbikesnbits
                                    wrote on last edited by
                                    #208

                                    @SpookDog better than a kick up the arse

                                    M 1 Reply Last reply
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                                    • M mhbikesnbits

                                      @SpookDog better than a kick up the arse

                                      M Offline
                                      M Offline
                                      mhbikesnbits
                                      wrote on last edited by
                                      #209

                                      @mhbikesnbits I’m In Talks with a guy in Australia who owns a 200r give me some really nice info on it and it’s general handling and stuff.

                                      He also has a load of parts and I’ve got all the important parts for the engine I need, the loom, cdi , servo all the electronics, the split pipe for the radiator and saving me a load of parts for the future spares ect I might need.

                                      Really big step forward to completion as it could have been months before I found these bits for sale

                                      CalumC 1 Reply Last reply
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                                      • M mhbikesnbits

                                        @mhbikesnbits I’m In Talks with a guy in Australia who owns a 200r give me some really nice info on it and it’s general handling and stuff.

                                        He also has a load of parts and I’ve got all the important parts for the engine I need, the loom, cdi , servo all the electronics, the split pipe for the radiator and saving me a load of parts for the future spares ect I might need.

                                        Really big step forward to completion as it could have been months before I found these bits for sale

                                        CalumC Offline
                                        CalumC Offline
                                        Calum
                                        wrote on last edited by
                                        #210

                                        @mhbikesnbits Yeah I would love to shave off as much weight as possible on my DTR.

                                        Another good one is to grab a lithium battery. That's a tremendous amount of weight saved!

                                        Always Originate, Never Pirate!

                                        M 1 Reply Last reply
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                                        • M mhbikesnbits

                                          More work to the engine barrel and head cleaned every engine component now finished cleaned ready for powder coat

                                          6379D8D1-7DC3-4429-8315-8A7A669B2D37.jpeg 85078F54-A7E2-4149-AA00-36C72EB1C2D3.jpeg 454DFCB1-DB36-4117-A535-7DDDCA8E4260.jpeg
                                          D3945EE8-708E-4E5F-B727-26AC1FC0DFBD.jpeg 83E77E69-D643-4B65-96D4-1D63C348935C.jpeg 3C02EA55-2F6D-4F83-B04A-1267358CF294.jpeg
                                          97E12B75-7C5A-4D7D-B5BC-0D12B1600E9F.jpeg 50DBFEDA-C392-40F5-ABAC-4C884D331992.jpeg 4709625D-D8BC-45C8-9B73-01E0AE0C5EF0.jpeg
                                          5548080E-2FA8-4241-BFD5-5C73414A8C6F.jpeg 4129C77E-CF6F-46AB-B1BF-3EF2CF1CA9EA.jpeg
                                          43DCE6D2-1B73-4B1D-B941-E52EA00FC8FD.jpeg BD14A5D4-0EEB-4ECD-BE2B-6046085FECBA.jpeg 8941181F-E934-4002-86D9-9CDA6644D530.jpeg

                                          HOTSHOT IIIH Offline
                                          HOTSHOT IIIH Offline
                                          HOTSHOT III
                                          wrote on last edited by HOTSHOT III
                                          #211

                                          @mhbikesnbits said in My DT125 80s Yz style DT200 build one to watch!:

                                          More work to the engine barrel and head cleaned every engine component now finished cleaned ready for powder coat

                                          6379D8D1-7DC3-4429-8315-8A7A669B2D37.jpeg 85078F54-A7E2-4149-AA00-36C72EB1C2D3.jpeg 454DFCB1-DB36-4117-A535-7DDDCA8E4260.jpeg
                                          D3945EE8-708E-4E5F-B727-26AC1FC0DFBD.jpeg 83E77E69-D643-4B65-96D4-1D63C348935C.jpeg 3C02EA55-2F6D-4F83-B04A-1267358CF294.jpeg
                                          97E12B75-7C5A-4D7D-B5BC-0D12B1600E9F.jpeg 50DBFEDA-C392-40F5-ABAC-4C884D331992.jpeg 4709625D-D8BC-45C8-9B73-01E0AE0C5EF0.jpeg
                                          5548080E-2FA8-4241-BFD5-5C73414A8C6F.jpeg 4129C77E-CF6F-46AB-B1BF-3EF2CF1CA9EA.jpeg
                                          43DCE6D2-1B73-4B1D-B941-E52EA00FC8FD.jpeg BD14A5D4-0EEB-4ECD-BE2B-6046085FECBA.jpeg 8941181F-E934-4002-86D9-9CDA6644D530.jpeg

                                          Firstly this is an amazing build and coming together well; I'm only sorry I didn't pay attention from the beginning as I now have lots of catching up to do!!

                                          Very interesting to look at pics of the combustion chamber; the squish band is huge and has to occupy around 75% of combustion chamber area as an estimate. Just had a read of the cylinder head chapter of A. Graham Bell's two-stroke tuning book and this puts the combustion chamber design in racing kart engine territory. Apparently kart heads are like this because they're heavily loaded pulling out of slow corners and this boosts torque and reduces the possibility of detonation but does sacrifice some top-end power (on the other hand road race engines can run very thin squish bands to be more efficient at high rpm).

                                          This could mean (subject to other critical engine dimensions) the DT200R 3ET develops a very linear power delivery similar to KDX200s and stuff like that, just what you need for enduro/greenlaning. Thanks for posting up the pics, the DT200R is so rare in the UK I've never had the chance to look at one before!

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