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Thread: 1981 gs750 (gs750e) Retro Racer project

  1. #281
    Join Date
    Mar 2021
    Location
    Lebanon, TN
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    39

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    Quote Originally Posted by LarsKroghStea View Post
    Well, I have a new question. Seems like someone damaged the threads to one of the exhaust bolts. What's the best way to fix this?
    With a tap and die set and you can re-tap the hole. If the old bolt is stuck you may have to drill it out or use some kind of bolt extractor.

  2. #282
    Join Date
    Oct 2015
    Location
    Aust-Agder Norway
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    302

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    Quote Originally Posted by nate665 View Post
    With a tap and die set and you can re-tap the hole. If the old bolt is stuck you may have to drill it out or use some kind of bolt extractor.
    Thanks, but I think this was a badly phrased question on my part :/ Some of the aluminum casting has broken off, and the threads are gone with it:


    There's too little thread left to hold the bolt properly. Usually, I would use some strong reinforced filler. But I'm afraid it wont expand at the same rate and probably work itself loose. is welding the only option?

  3. #283
    Join Date
    Oct 2015
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    Aust-Agder Norway
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    I designed and rendered Version 1 of the switch housing. I'll 3D print one tomorrow to see if it seems OK.







    Last edited by LarsKroghStea; 03-31-2021 at 07:45 PM.

  4. #284
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    Oct 2015
    Location
    Aust-Agder Norway
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    Modelled the bakside and printed both parts:



    Printing the clamp lying down wasn't a good idea..

    Both because of finish and strength:



    The housing turned out ok, one of the threaded holes was a bit off. I'll correct it and print new ones. The clamp I'll print lying on its side.

  5. #285
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    Oct 2015
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    Aust-Agder Norway
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    302

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    Size and ergonomics look good



  6. #286
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    Oct 2015
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    Aust-Agder Norway
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    And this is how they turned out:




  7. #287
    Join Date
    Oct 2015
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    Aust-Agder Norway
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    Also got the front tyre onto the rim today:


  8. #288
    Join Date
    Oct 2015
    Location
    Aust-Agder Norway
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    302

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    I removed the old bearings from the stem, and was about to press the new lower bearing on. The bearings are conversion bearings from All Balls. In the package was these two spacers. They are about the same with as the stem, and I'm not sure where they go.. Anyone who knows? There a two spacers in the pack with the lower bearing (tapered bearing) and two in the pack with the upper bearing.

    The spacers look like this:


  9. #289
    Join Date
    Oct 2015
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    Aust-Agder Norway
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    Quote Originally Posted by LarsKroghStea View Post
    I removed the old bearings from the stem, and was about to press the new lower bearing on. The bearings are conversion bearings from All Balls. In the package was these two spacers. They are about the same with as the stem, and I'm not sure where they go.. Anyone who knows? There a two spacers in the pack with the lower bearing (tapered bearing) and two in the pack with the upper bearing.

    The spacers look like this:

    Well, I'replying to my own post I found this in an old post from 2006, so it's strange that my kit didn't include instructions. Maybe they're online somewhere.

    "This kit is supplied with (2) spacers that are used by various applications
    to make up for thickness differences between the taper bearings and the ball
    stacks.

    We have put instructions for the use of these spacers in kits since last
    year, but if you have an earlier kit there may not be any instructions.

    To determine which, if any washer is required measure the stack height of
    the ball bearing assemblies (place a few ball between the races of both the
    top and bottom bearing sets) and compare this measurement to the stack
    height of both taper bearings. Select a washer to put the difference in
    stack height to 1 mm. If the stack height is already within 1 mm then do
    not use any washer.

    The washer will be placed onto the stem first (before the seal and taper
    bearing)

    We do have some swing arm kits for street applications, but not a complete
    line. If you can supply us with the dimension of the components we can
    typically supply all or some of the parts.

    Regards
    Kevin"

    I'll put the stem in the freezer until I get to measure the old bearings

  10. #290
    Join Date
    Oct 2015
    Location
    Aust-Agder Norway
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    302

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    Right side controls finished, I think it works well together with the throttle assembly;



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