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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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  • M Offline
    M Offline
    mhbikesnbits
    wrote on last edited by
    #126

    Well been a while since Iโ€™ve posted on this article, i just want to say the project is alive and well Iโ€™m making some progression finally. I blame a pregnancy and a pandemic for the delay ๐Ÿ˜‚

    Forget how I post picture on here will update some soon

    S CalumC 2 Replies Last reply
    2
    • M mhbikesnbits

      Well been a while since Iโ€™ve posted on this article, i just want to say the project is alive and well Iโ€™m making some progression finally. I blame a pregnancy and a pandemic for the delay ๐Ÿ˜‚

      Forget how I post picture on here will update some soon

      S Offline
      S Offline
      SpookDog
      wrote on last edited by
      #127

      @mhbikesnbits
      Sweet, Iโ€™ve not seen your project before. Some really nice attention to details ๐Ÿ‘
      Please, keep on keeping on ๐Ÿพ ...

      M 1 Reply Last reply
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      • M mhbikesnbits

        Well been a while since Iโ€™ve posted on this article, i just want to say the project is alive and well Iโ€™m making some progression finally. I blame a pregnancy and a pandemic for the delay ๐Ÿ˜‚

        Forget how I post picture on here will update some soon

        CalumC Offline
        CalumC Offline
        Calum
        wrote on last edited by
        #128

        @mhbikesnbits Yes wow blast from the past. Hard to think your last post was pre-pandemic. It's hard to even remember what life was like back then ๐Ÿ˜ž

        Always Originate, Never Pirate!

        M 1 Reply Last reply
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        • S SpookDog

          @mhbikesnbits
          Sweet, Iโ€™ve not seen your project before. Some really nice attention to details ๐Ÿ‘
          Please, keep on keeping on ๐Ÿพ ...

          M Offline
          M Offline
          mhbikesnbits
          wrote on last edited by
          #129

          @SpookDog tar buddy Hopefully a lot more of it come

          1 Reply Last reply
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          • CalumC Calum

            @mhbikesnbits Yes wow blast from the past. Hard to think your last post was pre-pandemic. It's hard to even remember what life was like back then ๐Ÿ˜ž

            M Offline
            M Offline
            mhbikesnbits
            wrote on last edited by
            #130

            @Calum I know Iโ€™ve really been slacking I got everything back out the other day to carry on with it had to refresh my mind of whatโ€™s, what ๐Ÿ˜… itโ€™s not so bad when you first do it but 2 years later and youโ€™ve not really looked at it you forget things ๐Ÿ˜‚

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            • M Offline
              M Offline
              mhbikesnbits
              wrote on last edited by mhbikesnbits
              #131

              Update 2022

              Iโ€™ve dug everything back out and got my head back around the project. The excitement to build the bike is Back but have a while to go yet. I started out by tapping out the holes on the parts that had been powder coated.

              alt text

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              • M Offline
                M Offline
                mhbikesnbits
                wrote on last edited by mhbikesnbits
                #132
                This post is deleted!
                1 Reply Last reply
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                • M Offline
                  M Offline
                  mhbikesnbits
                  wrote on last edited by mhbikesnbits
                  #133

                  Needed to get the engine rebuild under way so I can install the engine onto the frame of the bike to get some weight behind the project.

                  One of the only issues with the engine components other than the the usual wear on the bearings and seals was the play on the clutch basket.

                  So I did some research and found out you could redo the rubber bushes in the basket with RD250 bushes and rivets.

                  they sold them on yambits so I got the good old grinder on the old rivets flatten them with a sanding wheel and knocked them through

                  installed the new bushes and put it back together the play in the basket was like it would be straight out the factory.

                  Apologies but I must have forgot to take a picture of the finished basket.

                  alt text

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                  • M Offline
                    M Offline
                    mhbikesnbits
                    wrote on last edited by mhbikesnbits
                    #134

                    Had a little play with frame and put on a couple of bits, pressed in the races for the tapered roller bearings for the steering stem.

                    Love how the black contrasts with the red.

                    Also placed some bolts for the engine in position ready for the engine.

                    alt text

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                    S 1 Reply Last reply
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                    • M mhbikesnbits

                      Had a little play with frame and put on a couple of bits, pressed in the races for the tapered roller bearings for the steering stem.

                      Love how the black contrasts with the red.

                      Also placed some bolts for the engine in position ready for the engine.

                      alt text

                      alt text

                      alt text

                      S Offline
                      S Offline
                      SpookDog
                      wrote on last edited by
                      #135

                      Something about putting pristine bits back together. Itโ€™s like unwrapping a Christmas pressie backwards!

                      I had a similar situation with an old Audi project that I left for a year, I couldnโ€™t remember what bolts to use to put certain bits where! I had to relearn something that I used to know like the back of my hand!...

                      M 1 Reply Last reply
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                      • S SpookDog

                        Something about putting pristine bits back together. Itโ€™s like unwrapping a Christmas pressie backwards!

                        I had a similar situation with an old Audi project that I left for a year, I couldnโ€™t remember what bolts to use to put certain bits where! I had to relearn something that I used to know like the back of my hand!...

                        M Offline
                        M Offline
                        mhbikesnbits
                        wrote on last edited by
                        #136

                        @SpookDog oh yes you got that right it is very satisfying,Iโ€™m lucky in the respect thatโ€™s itโ€™s only a two stroke bike and not a Audi with ten times the amount of bits lol

                        S 1 Reply Last reply
                        0
                        • M mhbikesnbits

                          @SpookDog oh yes you got that right it is very satisfying,Iโ€™m lucky in the respect thatโ€™s itโ€™s only a two stroke bike and not a Audi with ten times the amount of bits lol

                          S Offline
                          S Offline
                          SpookDog
                          wrote on last edited by
                          #137

                          @mhbikesnbits

                          It was only an old Audi 90 10v that I went OCD on. I put a gas flowed head on it with a fat cam and lowered it. Some horrible little crackhead weighted it in when I got made homeless and wasnโ€™t around, back when the price of scrap went crazy (2010?)
                          Shtuff happens! ๐Ÿคจ ...

                          M 1 Reply Last reply
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                          • M Offline
                            M Offline
                            mhbikesnbits
                            wrote on last edited by mhbikesnbits
                            #138

                            Pretty much got the engine built just need do some finishing touches on it and order couple of other bits I used high quality bearings and seals and all genuine Yamaha gaskets including the head gasket.

                            Bore was in good condition I used a 68mm wosner piston To replace the old one

                            Thinking of putting it on the frame with no oil all in as Iโ€™m thinking of setting the clutch up all In one go once the clutch perch and cable is installed with the clutch having 3 places to to adjust it

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                            markus.wM 1 Reply Last reply
                            2
                            • M mhbikesnbits

                              Pretty much got the engine built just need do some finishing touches on it and order couple of other bits I used high quality bearings and seals and all genuine Yamaha gaskets including the head gasket.

                              Bore was in good condition I used a 68mm wosner piston To replace the old one

                              Thinking of putting it on the frame with no oil all in as Iโ€™m thinking of setting the clutch up all In one go once the clutch perch and cable is installed with the clutch having 3 places to to adjust it

                              alt text

                              alt text

                              alt text

                              I alt text

                              alt text

                              alt text

                              markus.wM Offline
                              markus.wM Offline
                              markus.w
                              wrote on last edited by
                              #139

                              @mhbikesnbits looking real nice mate this going to be a quality build. I'm liking the black powder coat on all the engine parts. 68mm piston you say, would that be 200cc? Or even I'm thinking 200cc oversize?

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

                                @mhbikesnbits looking real nice mate this going to be a quality build. I'm liking the black powder coat on all the engine parts. 68mm piston you say, would that be 200cc? Or even I'm thinking 200cc oversize?

                                M Offline
                                M Offline
                                mhbikesnbits
                                wrote on last edited by
                                #140

                                @markus-w cheers pal I hope itโ€™s going to look quality the money Iโ€™ve spent so far ๐Ÿ˜‚, it is a 200 e engine yes unsure what the stock size from the factory is tbh or if itโ€™s been bored out or anything

                                markus.wM 2 Replies Last reply
                                0
                                • S SpookDog

                                  @mhbikesnbits

                                  It was only an old Audi 90 10v that I went OCD on. I put a gas flowed head on it with a fat cam and lowered it. Some horrible little crackhead weighted it in when I got made homeless and wasnโ€™t around, back when the price of scrap went crazy (2010?)
                                  Shtuff happens! ๐Ÿคจ ...

                                  M Offline
                                  M Offline
                                  mhbikesnbits
                                  wrote on last edited by
                                  #141

                                  @SpookDog what a shame bet you were gutted when you found it was gone

                                  1 Reply Last reply
                                  0
                                  • M mhbikesnbits

                                    @markus-w cheers pal I hope itโ€™s going to look quality the money Iโ€™ve spent so far ๐Ÿ˜‚, it is a 200 e engine yes unsure what the stock size from the factory is tbh or if itโ€™s been bored out or anything

                                    markus.wM Offline
                                    markus.wM Offline
                                    markus.w
                                    wrote on last edited by
                                    #142

                                    @mhbikesnbits I think standard is 66mm.

                                    M 1 Reply Last reply
                                    0
                                    • markus.wM markus.w

                                      @mhbikesnbits I think standard is 66mm.

                                      M Offline
                                      M Offline
                                      mhbikesnbits
                                      wrote on last edited by
                                      #143

                                      @markus-w canโ€™t wait kick it in tbh see what the engine can do

                                      1 Reply Last reply
                                      0
                                      • M mhbikesnbits

                                        @markus-w cheers pal I hope itโ€™s going to look quality the money Iโ€™ve spent so far ๐Ÿ˜‚, it is a 200 e engine yes unsure what the stock size from the factory is tbh or if itโ€™s been bored out or anything

                                        markus.wM Offline
                                        markus.wM Offline
                                        markus.w
                                        wrote on last edited by
                                        #144

                                        @mhbikesnbits I've just done the maths on it. A standard 200cc barrel is actually 195cc (65.98mm piston) a 68mm bore would make it 207cc so a difference of 12cc. Should be quite noticeable.

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

                                          @mhbikesnbits I've just done the maths on it. A standard 200cc barrel is actually 195cc (65.98mm piston) a 68mm bore would make it 207cc so a difference of 12cc. Should be quite noticeable.

                                          M Offline
                                          M Offline
                                          mhbikesnbits
                                          wrote on last edited by
                                          #145

                                          @markus-w youโ€™ve got be excited now ๐Ÿ˜‚

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