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Thread: Early Bug Flea

  1. #31
    Havasu Dave's Avatar
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    Well, there are some alignment issues. The photos below tell the story. If I am missing something, please tell me.

    This is where the rear wheel sits in the frame. Note how far to the right the engine needs to be for the chain to align.


    This is a view from the front showing the right hand mount holes.


    Clutch side. Clutch running inboard, note distance to left side mount holes.


    Top View.
    Has anybody seen the bridge?

  2. #32
    Itype2slo's Avatar
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    D,oh back to the drawing board. I know that's not the atta boy you want. But you are resourceful how are you going to correct? I have faith you have some ideas. Good luck

  3. #33
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    Dave,
    Not much you can do with such a small frame.
    Check this pic - engine is mounted way to the right.
    You will need to carry some ballast in your left pocket!
    Bug Flea.jpgBug Flea.jpg

  4. #34
    Havasu Dave's Avatar
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    Quote Originally Posted by scrambler1 View Post
    Dave, Not much you can do with such a small frame. Check this pic - engine is mounted way to the right.
    You will need to carry some ballast in your left pocket!
    Aye. In order to get the R/H engine mount bolts to go "inside" of the frame, (and barely fitting) I would have to move the rear wheel to the left, where the chain was about touching the frame. I am using original wheel spacers, and have the original engine plate, so I am in a quandary as to what is now different than original.

    So easily fixed, (and a better bike) with a jack shaft. I can list several design flaws Bug made in their exuberance to quickly pump out a mini bike.

    PS: Note how in this brochure the engine plate is not shown beneath the rear mounting lugs on the engine?
    Last edited by Havasu Dave; 10-11-2017 at 09:10 AM.
    Has anybody seen the bridge?

  5. #35
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    If you have to change the bushing to move the wheel to the right, that would partially offset the extra weight of the engine being so far to the right?

  6. #36
    Havasu Dave's Avatar
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    Using the @chipper trick of using a straight edge, and with the engine as far to the right as it's mounting bolts will allow it:.



    I can get .198" by moving the rear wheel to the left- which just allows the brake to clear the frame, but it wont be enough.



    Unless I also cut some of the margin off of the clutch from the sprocket to where it rests on the PTO. I have a message out to Jim Donovan on that. Note that we think a vintage Mercury clutch would have had the sprocket flush. Anybody got one in 5/8?

    Has anybody seen the bridge?

  7. #37
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    I'm sure you can remove a bit from the clutch, (Jim will shudder at the thought), but will your sprocket and chain clear the chain guard?
    You might have to modify the way it mounts.

  8. #38
    Havasu Dave's Avatar
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    Quote Originally Posted by scrambler1 View Post
    I'm sure you can remove a bit from the clutch, (Jim will shudder at the thought), but will your sprocket and chain clear the chain guard?
    You might have to modify the way it mounts.
    Already heard back from Jim. Will send him the part and he says he can machine off .300.
    No, will not clear guard, guard will need to be machined.
    Modifying the way it mounts is not an option, since I will not drill through the frame rails, I wont drill extra holes in the engine, and I wont have a mini bike with an engine sticking out like a tumor.

    All I need is a vintage Mercury Clutch. Or a jack shaft, but I've already received death threats from my fellow purists.

    Oh and...I cant verify if these maneuvers will allow me to mount the engine as per original anyway. LOL
    Has anybody seen the bridge?

  9. #39
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    Just a thought ....
    For the mount bolts that are interfering with the frame - weld them to the mounting plate.
    Either weld them sitting on top of the plate, or from underneath.
    Ideally, they would be flush with the top of the plate, so the engine still sits on the plate, but that is a trickier weld.

  10. #40
    Havasu Dave's Avatar
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    Quote Originally Posted by scrambler1 View Post
    Just a thought ....
    For the mount bolts that are interfering with the frame - weld them to the mounting plate.
    Either weld them sitting on top of the plate, or from underneath.
    Ideally, they would be flush with the top of the plate, so the engine still sits on the plate, but that is a trickier weld.
    And how would you go about adjusting for the chain then, if I am understand you right.
    Has anybody seen the bridge?

 

 
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