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DT125R FORUM

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  4. So Close!...

So Close!...

Scheduled Pinned Locked Moved DTR
1.1k Posts 26 Posters 207.9k Views
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  • S SpookDog

    @Calum

    I’m not an original’o’phobe myself, personally. I just think the OEM ones are better than aftermarket replacement ones. Not including titanium or stainless upgrades, which I would use if I weren’t so ‘broke a$$’ 🙃

    I do get people wanting originality on classic things, but I’ve always got the most out of doing my own thing. Cutting, welding/splicing and usually Matt black (cause of the broke ass thing 🙂) with the lettering on the tyres picked out in white (child of the 70’s!)…

    PS! Do the clutch springs need upgrading with an Athena kit? Or is standard fine?…

    S Offline
    S Offline
    SpookDog
    wrote on last edited by
    #756

    Got the bottom end pinned together, despite the wind which always blows crap about when I’m doing engine internals! I put up a beach umbrella and hid behind it.
    It went together well, this is my third bottom end rebuild and I like to think I’ve improved a bit each time 🙂 The new crank spins real easy, you could blow on it and spool it up!…

    1 Reply Last reply
    2
    • CalumC Offline
      CalumC Offline
      Calum
      wrote on last edited by
      #757

      I'm not going to lie, you use your bike a damn sight more than I use any of mine! I mostly cycle/run everywhere.

      No you don't need clutch springs for the Athena 170 kit, so long as your clutch is healthy you should be fine. That said, I run the stiffer spring setup, along with the EBC Dirt clutch plates.

      Been out on my DT today and it is running CRISP in this weather. Really hurtles along!

      Yeah it's satisfying riding the bike with a motor you've put together.

      Always Originate, Never Pirate!

      1 Reply Last reply
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      • S SpookDog

        @Calum

        I’m not an original’o’phobe myself, personally. I just think the OEM ones are better than aftermarket replacement ones. Not including titanium or stainless upgrades, which I would use if I weren’t so ‘broke a$$’ 🙃

        I do get people wanting originality on classic things, but I’ve always got the most out of doing my own thing. Cutting, welding/splicing and usually Matt black (cause of the broke ass thing 🙂) with the lettering on the tyres picked out in white (child of the 70’s!)…

        PS! Do the clutch springs need upgrading with an Athena kit? Or is standard fine?…

        MadGyverM Offline
        MadGyverM Offline
        MadGyver
        wrote on last edited by
        #758

        @SpookDog said in So Close!...:

        I would use if I weren’t so ‘broke a$$’ 🙃

        I do get people wanting originality on classic things, but I’ve always got the most out of doing my own thing. Cutting, welding/splicing and usually Matt black (cause of the broke ass thing 🙂) with the lettering on the tyres picked out in white (child of the 70’s!)…

        I understand you so much and I am in your "broke a$$" team as well (but 80s child).

        I need my tools and a pile of junk.....

        1 Reply Last reply
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        • S Offline
          S Offline
          SpookDog
          wrote on last edited by
          #759

          Didn’t get owt done today. Bike was running properly crisp tho! It was like the cold dense air was a nitrous hit for the old bee~atch! The bits & bobs motor I’ve got in at the moment has done me reall, really well considering the absolute state of it! I’m just coming up on 30,000miles since I got and built the bike & engine!…
          All the hassles I’ve had and IT has never left me stranded on the side of the road. Bless!!…

          I’m quite looking forward to the new chapter in Its incarnation . I’m hoping it’ll run like a dream from here on out 😜
          ☠️🐾🐾

          1 Reply Last reply
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          • CalumC Offline
            CalumC Offline
            Calum
            wrote on last edited by
            #760

            I seriously can't get over how much you ride lmao. I don't think I've done 30k miles in all of the vehicles I've owned.

            Always Originate, Never Pirate!

            S 1 Reply Last reply
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            • CalumC Calum

              I seriously can't get over how much you ride lmao. I don't think I've done 30k miles in all of the vehicles I've owned.

              S Offline
              S Offline
              SpookDog
              wrote on last edited by
              #761

              I still need a gudgeon pin for an Athena 170 piston. It’s 16mm x 56mm. The only one I can find is 16 x 57mm…

              If anyone has put a new piston in their Athena kit and still has the old pin please let me know. I can’t do any more to my build till I get one 😐 …

              Cheers Peeps!…

              CalumC MadGyverM 2 Replies Last reply
              0
              • S SpookDog

                I still need a gudgeon pin for an Athena 170 piston. It’s 16mm x 56mm. The only one I can find is 16 x 57mm…

                If anyone has put a new piston in their Athena kit and still has the old pin please let me know. I can’t do any more to my build till I get one 😐 …

                Cheers Peeps!…

                CalumC Offline
                CalumC Offline
                Calum
                wrote on last edited by
                #762

                @SpookDog I only recently threw away an Athena 170 gudgeon pin that only saw a few hundred miles on it 😮

                Always Originate, Never Pirate!

                S 1 Reply Last reply
                0
                • S SpookDog

                  I still need a gudgeon pin for an Athena 170 piston. It’s 16mm x 56mm. The only one I can find is 16 x 57mm…

                  If anyone has put a new piston in their Athena kit and still has the old pin please let me know. I can’t do any more to my build till I get one 😐 …

                  Cheers Peeps!…

                  MadGyverM Offline
                  MadGyverM Offline
                  MadGyver
                  wrote on last edited by
                  #763

                  @SpookDog said in So Close!...:

                  I still need a gudgeon pin for an Athena 170 piston. It’s 16mm x 56mm. The only one I can find is 16 x 57mm…

                  If anyone has put a new piston in their Athena kit and still has the old pin please let me know. I can’t do any more to my build till I get one 😐 …

                  Cheers Peeps!…

                  Why don't you take the 16x57 and machine off 0.5mm from each side?
                  I remember the pin from the kit has a little play when installed with the circlips,maybe there is space for that 1mm.

                  I need my tools and a pile of junk.....

                  1 Reply Last reply
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                  • CalumC Calum

                    @SpookDog I only recently threw away an Athena 170 gudgeon pin that only saw a few hundred miles on it 😮

                    S Offline
                    S Offline
                    SpookDog
                    wrote on last edited by SpookDog
                    #764

                    @Calum

                    Well f@nk you very much! Wasteful Torrie! 🙂 …

                    @MadGyver

                    My plan B! 😜 …

                    I’ve got one ordered earlier today, once I found out my siss’s card worked. She’s a fuxin heroin when it comes to keeping me afloat!
                    It looks like there is enough room to fit the 57mm pin, I’m just not clued up on heat expansion & the like. I can just imagine it popping off a curclip when it comes up to temp! 🫤 …

                    Edit: I forgot to ask about Athena replacement piston rings. Best place to get them? I understand that they’re specific to these kits as they’re 1mm thick/thin? Seems churlish not to fit new ones if they’re available and not astronomicaly priced …

                    S 1 Reply Last reply
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                    • S SpookDog

                      @Calum

                      Well f@nk you very much! Wasteful Torrie! 🙂 …

                      @MadGyver

                      My plan B! 😜 …

                      I’ve got one ordered earlier today, once I found out my siss’s card worked. She’s a fuxin heroin when it comes to keeping me afloat!
                      It looks like there is enough room to fit the 57mm pin, I’m just not clued up on heat expansion & the like. I can just imagine it popping off a curclip when it comes up to temp! 🫤 …

                      Edit: I forgot to ask about Athena replacement piston rings. Best place to get them? I understand that they’re specific to these kits as they’re 1mm thick/thin? Seems churlish not to fit new ones if they’re available and not astronomicaly priced …

                      S Offline
                      S Offline
                      SpookDog
                      wrote on last edited by
                      #765

                      The spacer that I have on the primary drive side of the crank has a groove machined into it. Does the groove side go into the crank seal?…

                      The others I’ve done before haven’t had the groove…

                      1 Reply Last reply
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                      • MadGyverM Offline
                        MadGyverM Offline
                        MadGyver
                        wrote on last edited by MadGyver
                        #766

                        @SpookDog
                        Can you post a picture,I don't remember groove on mine.

                        I need my tools and a pile of junk.....

                        S 1 Reply Last reply
                        0
                        • MadGyverM MadGyver

                          @SpookDog
                          Can you post a picture,I don't remember groove on mine.

                          S Offline
                          S Offline
                          SpookDog
                          wrote on last edited by SpookDog
                          #767

                          @MadGyver

                          alt text

                          You can see that it’s been used either way round. I was just wondering what the reason is? If it aligned with the seal I could understand, but the wear pattern shows it doesn’t…

                          Actually, saying that! It looks like they’re not symmetrical! Strange! 🤔

                          S 1 Reply Last reply
                          0
                          • S SpookDog

                            @MadGyver

                            alt text

                            You can see that it’s been used either way round. I was just wondering what the reason is? If it aligned with the seal I could understand, but the wear pattern shows it doesn’t…

                            Actually, saying that! It looks like they’re not symmetrical! Strange! 🤔

                            S Offline
                            S Offline
                            SpookDog
                            wrote on last edited by SpookDog
                            #768

                            Now I’m wondering if it’s original to the Dtr? It looks like it was used in a different engine, from the wear on one side to the other!
                            I don’t have another one kicking around that I know of. I’d like to know the measurements of a proper one so I can compare. It did skim off a sliver of the seal when I tapped it in. I though it was because it was a NOS seal and a bit hard. Guess I could of been wrong…

                            Edit: then again someone could of just tapped the seal in too far, or not enough one of the times! Arrggghhhhh!!! 🤪

                            S 1 Reply Last reply
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                            • S SpookDog

                              Now I’m wondering if it’s original to the Dtr? It looks like it was used in a different engine, from the wear on one side to the other!
                              I don’t have another one kicking around that I know of. I’d like to know the measurements of a proper one so I can compare. It did skim off a sliver of the seal when I tapped it in. I though it was because it was a NOS seal and a bit hard. Guess I could of been wrong…

                              Edit: then again someone could of just tapped the seal in too far, or not enough one of the times! Arrggghhhhh!!! 🤪

                              S Offline
                              S Offline
                              SpookDog
                              wrote on last edited by SpookDog
                              #769

                              Oh well, one thing that I can say with absolute conviction is: don’t buy new old stock seals trying to save money! 😉
                              A 35 year old seal in the bike, is worth many, many more than in the bush. They age better in their natural environment 👍 …

                              1 Reply Last reply
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                              • MadGyverM Offline
                                MadGyverM Offline
                                MadGyver
                                wrote on last edited by MadGyver
                                #770

                                @SpookDog
                                There is no reason for that groove there,no gain in lubrication or anything else. It's a spacer for seals. It must be from a wornout seal.
                                I had something similar on the spacer that seats the seal at the external chain sprocket. It looked like factory groove.

                                I need my tools and a pile of junk.....

                                S 1 Reply Last reply
                                0
                                • MadGyverM MadGyver

                                  @SpookDog
                                  There is no reason for that groove there,no gain in lubrication or anything else. It's a spacer for seals. It must be from a wornout seal.
                                  I had something similar on the spacer that seats the seal at the external chain sprocket. It looked like factory groove.

                                  S Offline
                                  S Offline
                                  SpookDog
                                  wrote on last edited by SpookDog
                                  #771

                                  @MadGyver
                                  Sorry bud, I disagree. I know, and have had, what you’re talking about. This isn’t wear, it’s machined. It’s a perfect V.
                                  It’s just 1 not 2 like ‘normal’ wear would be?

                                  With the new (nitrile?) seal in place flush with the casing the groove lines up with the outer lip. I think it actually gives a lot more surface area for the outer lip of the seal to mate up to…

                                  I’ve only had the wear line on single lip seals, the sprocket spacer has been my experience as well. Now I’m wondering!…

                                  I just can’t get over the amount of ‘curve balls’ this bike has given me! The learning curve has been like climbing K2! 😳

                                  I do appreciate the input though, please let me know your thoughts!…

                                  CalumC 1 Reply Last reply
                                  0
                                  • S SpookDog

                                    @MadGyver
                                    Sorry bud, I disagree. I know, and have had, what you’re talking about. This isn’t wear, it’s machined. It’s a perfect V.
                                    It’s just 1 not 2 like ‘normal’ wear would be?

                                    With the new (nitrile?) seal in place flush with the casing the groove lines up with the outer lip. I think it actually gives a lot more surface area for the outer lip of the seal to mate up to…

                                    I’ve only had the wear line on single lip seals, the sprocket spacer has been my experience as well. Now I’m wondering!…

                                    I just can’t get over the amount of ‘curve balls’ this bike has given me! The learning curve has been like climbing K2! 😳

                                    I do appreciate the input though, please let me know your thoughts!…

                                    CalumC Offline
                                    CalumC Offline
                                    Calum
                                    wrote on last edited by Calum
                                    #772

                                    @SpookDog I suspect there may be a correct way to put it in.

                                    alt text

                                    Part Number 25.

                                    Can get a new one in Titanium 😉

                                    https://titanclassics.com/product/titanium-front-sprocket-spacer/

                                    Always Originate, Never Pirate!

                                    1 Reply Last reply
                                    0
                                    • D Offline
                                      D Offline
                                      DTR+NSR
                                      wrote on last edited by
                                      #773

                                      It's a wear groove, seen it many times on cranks etc. your lucky on the DT it's a removable bush/sleeve, that can be replaced. I'd turn it so the seal is running on a smooth section of the sleeve.

                                      S 1 Reply Last reply
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                                      • D DTR+NSR

                                        It's a wear groove, seen it many times on cranks etc. your lucky on the DT it's a removable bush/sleeve, that can be replaced. I'd turn it so the seal is running on a smooth section of the sleeve.

                                        S Offline
                                        S Offline
                                        SpookDog
                                        wrote on last edited by
                                        #774

                                        @DTR-NSR

                                        That is what I first thought, but it’s so perfect. Also it’s a double lipped seal so there should be two. Can you understand where I’m coming from?…

                                        ——————————

                                        When I saw it on the front sprocket spacer I thought it was wear. Now I’m starting to wonder. How much rubber would it take to wear into steel?!

                                        HOTSHOT IIIH 1 Reply Last reply
                                        0
                                        • CalumC Offline
                                          CalumC Offline
                                          Calum
                                          wrote on last edited by Calum
                                          #775

                                          @SpookDog I've updated my original post, I was having a hard time locating the part in question (being thick).

                                          Anyway I think it's part number 25 you're after and it looks as though, no there should not be a lip there.

                                          You can get a titanium replacement:
                                          https://titanclassics.com/product/titanium-front-sprocket-spacer/

                                          Always Originate, Never Pirate!

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