any pics of custom motor mounts?

Discussion in 'Motorized Bicycle General Discussion' started by tommyboy1442, Nov 25, 2009.

  1. tommyboy1442

    tommyboy1442 Member

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    ineed to move my motor like half an inch to the left for clearence of chain on tire,anybody solve the problem this way?
     
  2. DOC BOLM

    DOC BOLM New Member

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    I had that problem on my delmar.I called Jim at manic mechanic and bought a sprocket kit to move my chain to the left.H.D.
     
  3. Homer

    Homer New Member

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    Welcome Tommyboy1442,
    I had a similar problem running 26x2.5 maxxis hookworms,chain rubbed bad. I started out with the stock flat 44 t from my first kit, then put 1 washer between all 9 bolts and the sprocket, it help but still rubbed more than I liked.
    I then ordered a chrome offset 44t sprocket put it on with the teeth in the outward position 1 washer between all 9 bolts and the sprocket and no more rubbing.
     
  4. Maxvision

    Maxvision New Member

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    Didja try turning the rear sprocket? The teeth are offset from the whole disk so they are pushed out on one side and pushed in on the other.
     
  5. Cabinfever1977

    Cabinfever1977 New Member

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    space your rear sprocket out or flip it dished out to get tire and chain clearance, don't move engine over. unless your tire is 3" or larger.
     
  6. RedB66

    RedB66 New Member

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    This type of mount will let you move the motor.
     

    Attached Files:

  7. Venice Motor Bikes

    Venice Motor Bikes Custom Builder / Dealer/Los Angeles

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    Also keep in mind that if you move the engine over, it will hit the pedal!
     
  8. 247Jude

    247Jude New Member

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    use a jack shaft
     
  9. Humsuckler

    Humsuckler New Member

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    yea its a common problem, what you need to do is fli your sprocket over so the dish is out. if its a flat sprocket you need a dished one.

    order an adaptor and sprocket from jim!
     
  10. Kevron99

    Kevron99 New Member

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    I agree. Jack Shaft is the ultimate solution or Creatives sprocket adapter
     
  11. fall_down_stand_up

    fall_down_stand_up New Member

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    The problem is alot of us dont have the cash for these parts....

    John-John
     
  12. Kevron99

    Kevron99 New Member

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    I think the cheapest way to offset a motor to either left or right is what Neat Times (forum member) has suggested. He did bent a quality mounting studs towards the desired direction and cut the motor mount in an angle. However, I do not know if it is reliable as I have not tried it. See Neat Times illustrations..

    http://motorbicycling.com/attachmen...enging-mount-felt-bike-ht-off-set-mtr-mts.jpg
     
  13. BarelyAWake

    BarelyAWake New Member

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    I bet a $35 sprocket adapter would be a heck of a lot cheaper in the long run than messin' with the motor mounts like that...

    *shrug*
     
  14. fall_down_stand_up

    fall_down_stand_up New Member

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    What do you do if you dont have a hub that is the right size for a sprocket adaptor?To buy a wheel that is the right size adds up to even more cash....I wish I had the right size wheel or I would buy an adaptor....
    John-John
     
  15. BarelyAWake

    BarelyAWake New Member

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    Call Jim, Pirate Cycles sells his adapter in two common sizes - but to the best of my knowledge he cuts them to size... Thus this statement on his website;

    I may have misinterpreted it, but heck - it's still worth a call ;)
     
  16. tommyboy1442

    tommyboy1442 Member

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    alright well i figured out the sprocket deal,im using a bmx sprocket on a flip flop hub,now to figure out how to move the motor over so that the chain rides straight. even with the sprocket from jim,when running a 3 " tire,you still have to move the motor over a little,and then you have to widen your cranks . im gonna run a 3 piece profile racing crank and just widen the spindel to clear the motor.i have plenty of ideas of how i could make an offset mount,but milling and lathe machines would allow me to make a precise great looking and fuctioning part,inwhich i dont have access to,so i'll probably just get a chunk of aluminum,permanant marker,some drill bits and taps and a dremel and get to work.i'll post pics when done....it wont be easy,lots of metal shavings flyin everywhere-lol!....
     
  17. Creative Engineering

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    You interpreted it correctly...I have programs for 50+ different sizes and the list grows every month. The rub comes from hubs that are hour-glass shaped, or of some configuration that does not have at least 3/4" of straight cylindrical surface.

    Jim
     
  18. oldsurfer

    oldsurfer New Member

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    i have the same rear hub set up that comes on the gt1 and 2 bikes...is there a way to move the sproket out a little to stop the chain rub???????
     
  19. machiasmort

    machiasmort New Member

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    Cut a thicker piece of ruber, "Floor mat" for car works, placed behind the sprocket, (dished out even), if you have too!

    What do I know? I'm an idiot!

    If you try to move the motor over, you will throw the concentricity of the sprockets off.

    The front will look like( / )and the back like this (|) if the bike were on it's side.

    We want them good and straight: |
    xxxxxxxxxfloor mat spacerxxxxxxxx |
     
    #19 machiasmort, Aug 6, 2010
    Last edited: Aug 6, 2010

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