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    Re: JGSFAB 2-seat Turbo GSXR1000 buggy build
    #21
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    I had thought about leveraging a flex joint between the engine and transmission (FNR), but have wondered about getting the correct alignment of the FNR input shaft to the engine output shaft. For the stickshift muscle cars I have built, I dialed in the bellhousing input shaft bearing pilot hole to the engine crank using offset dowels and dial indicator. Also checked for perpendicularity to the flywheel. That works fine when you have the two mounted to each other. It's different when the transmission is not attached to the engine. One is for the initial setup/alignment, the other may be with dynamic loads causing the joint to flex between the engine and transmission. Needless to say, I am curious as to how you mounted the FNR and what alignment adjustments you did to set it up. Might help me with the design I am thinking about.
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    Re: JGSFAB 2-seat Turbo GSXR1000 buggy build
    #22
    Bend-Tech Dragon Master
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    The FNR mount is shown in the pics and is 3 axis adjustable. The bimmer flex disc will account for any misalignment during frame flexing . We will see how this one goes, the flex should save gears, reverse chain, etc.
    Lots of newish little things in this car
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    Re: JGSFAB 2-seat Turbo GSXR1000 buggy build
    #23
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    Yup, that's the same thing I was thinking of doing. Setting up 3 axis adjustments to allow for proper alignment and locking it in after that. Are you using jack screws to make the adjustments? Maybe there were pics earlier in the post, but I missed them...
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    Re: JGSFAB 2-seat Turbo GSXR1000 buggy build
    #24
    Bend-Tech Dragon Master
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    Quote Originally Posted by NinjaRaptor View Post
    Yup, that's the same thing I was thinking of doing. Setting up 3 axis adjustments to allow for proper alignment and locking it in after that. Are you using jack screws to make the adjustments? Maybe there were pics earlier in the post, but I missed them...
    Careful hammer taps
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    Re: JGSFAB 2-seat Turbo GSXR1000 buggy build
    #25
    Bend-Tech Dragon Master
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    Ready to weld up the driveshaft

    Bedlined the cell shell, the red paint doesn't last long.
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    Re: JGSFAB 2-seat Turbo GSXR1000 buggy build
    #26
    Senior Member whitedragon64's Avatar
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    Impressive JGS
    Are you going to run 930 cv's if you are BMW make diff flanges that suit the 930 cv's
    Just pop out the ones you have and pop in the 930's type

    Have you thought about using CV's for the drive from the engine to your FNR box ?

    Another option up your sleeve . I used uni Joints on 1 build and had vibration problems
    Which had a couple of issues 1 was no slip in the set up (thermal growth) and the other issue was I had much more miss alignment than you have
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    Re: JGSFAB 2-seat Turbo GSXR1000 buggy build
    #27
    Bend-Tech Dragon Master
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    Quote Originally Posted by whitedragon64 View Post
    Impressive JGS
    Are you going to run 930 cv's if you are BMW make diff flanges that suit the 930 cv's
    Just pop out the ones you have and pop in the 930's type

    Have you thought about using CV's for the drive from the engine to your FNR box ?

    Another option up your sleeve . I used uni Joints on 1 build and had vibration problems
    Which had a couple of issues 1 was no slip in the set up (thermal growth) and the other issue was I had much more miss alignment than you have
    I did build in a small amount of slip to get the shaft in place (my FNR has square splines like most slip sections). Glad its going to be functional too.
    20deg shaft angle, its not bad.
    I briefly thought about CVs but I machined the shafts with splines that match off the shelf u-joint parts. There is even a cheap 4 bolt flange from an early Jeep T-Case.

    The axles and drive shafts are finished already, F150 outers all around and I came up with this mod for the inner....





    Apparently I never posted pics of the finished ones Which Bimmer model is the 930 size?
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    Re: JGSFAB 2-seat Turbo GSXR1000 buggy build
    #28
    Senior Member whitedragon64's Avatar
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    I think some 5 series and some 7 series with the 6 cyl diff in then

    A mate had the diff lying around so I grabbed it and it was the 6 Cyl size and had the large flanges hanging off it , That's all I used of the diff
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    Re: JGSFAB 2-seat Turbo GSXR1000 buggy build
    #29
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    You are making good progress, look forward to seeing pics of the overall drive train once its completed.
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    Re: JGSFAB 2-seat Turbo GSXR1000 buggy build
    #30
    Bend-Tech Dragon Master
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    Pedal/steering cluster.
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