engine mounting ?

Discussion in 'Motorized Bicycle General Discussion' started by flathead31coupe, Jan 19, 2009.

  1. flathead31coupe

    flathead31coupe New Member

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    i have a 50s firestone 26'' bike, that in the v shape where the engine will mount its 10'', is their a adapter to buy to make up the difference in length of the rear engine mount? if i go as low as i can it hits the sprocket
     
    #1 flathead31coupe, Jan 19, 2009
    Last edited: Jan 19, 2009
  2. NEAT TIMES

    NEAT TIMES New Member

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    Flathead, Welcome, Not Many Flat Heads Around. My First Car Was Model A 1928 Coupe. Let Us Know How The Build Go`s. You Will Get Much Help Here. YOU MAY NOT NEED ADAPTER Ron
     
  3. flathead31coupe

    flathead31coupe New Member

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    thanks for the reply, at it widest point its 10'' to wide for the stock mounts that are on the engine....
     
  4. flathead31coupe

    flathead31coupe New Member

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    here are a few pics rsz_1PIC00008.jpg

    rsz_PIC00009.jpg

    rsz_PIC00010.jpg
     
  5. Ghost0

    Ghost0 New Member

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    That is the typical problem with "cruiser" style frames. Do some searching on the site and you will see many members have come up with solutions to your problem. The short answer is use the rear mount positioned where you want it and fabricate an extension for the front mount.
     
  6. Creative Engineering

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    31coupe,

    Make a spacer that will go between the engine and the cast mount that comes with the engine. Buy grade 8 allen bolts to secure the whole assembly...front mount too!

    The spacer will be nothing more than a block with two holes drilled in it...a simple fix!

    Jim
     
  7. seca40

    seca40 New Member

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    This is how I did mine. There have been many different solutions presented here. I'm sure others will post theirs. Obviously the paint on your bike is nicer than what I started with. Good luck.
     

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  8. Creative Engineering

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    31coupe,

    For 99% of the installations Ghost0 and seca40 are right. The forward tube is typically too large on most bikes, making it impossible to directly bolt up the engine. Being that your frame will accomodate the front mount, I would opt to mount the front and adapt the rear with a spacer.

    Jim
     
  9. flathead31coupe

    flathead31coupe New Member

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    cool thanks for the quick reply everyone....
     
  10. seca40

    seca40 New Member

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  11. 2door

    2door Moderator
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    Coupe,
    Looks like you're pretty well covered with ideas and suggestions so I'll just take up the space to welcome you to the forum. Any Model 'A' driver is welcome here.
    Tom
     
  12. flathead31coupe

    flathead31coupe New Member

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  13. the-bike-guy

    the-bike-guy New Member

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