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Mounting Techniques Every frame is different. Share and ask questions about mounting your motorized bicycle engine kit to your bicycle frame or bicycle rack

help! i need some brainstorming for this one.


Discussion at Motorized Bicycle Engine Kit Forum in the Mounting Techniques forum. as you can see, the bottom of the motor is going to sit very, very close to the chain. i ...
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Old 08-01-2009, 01:47 PM
13b 13b is offline
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Default help! i need some brainstorming for this one.

as you can see, the bottom of the motor is going to sit very, very close to the chain. i have a lot of mounting hardware (from my new kit and some that i can salvage off of my old motorbike) so i need a solution for that front tube. the rear tube fits fint in the brackets, and can slide in any direction.

i guess i mainly need a solution for the front tube so that the engine sits up far enough, to avoid coming near the chain.



this picture is from when i was test-fitting it, thats why the brackets are in there all funny. i'm trying to avoid drilling a hole.

thanks!
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Old 08-01-2009, 02:37 PM
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Default Re: help! i need some brainstorming for this one.

just add a spacer in there.
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Old 08-01-2009, 02:40 PM
13b 13b is offline
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Default Re: help! i need some brainstorming for this one.

by the time i add one large enough, the bolts won't clear the other side of the tube.

do you have a picture you can show me? maybe i'm not understanding.
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Old 08-01-2009, 02:51 PM
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Default Re: help! i need some brainstorming for this one.

the spacer doesnt have to be very thick,you can add a thin one on the back or front either one will lift the motor a little.which has longer bolts - the front or back? place the spacer under the one with longer ones. diffrent materials can be used as a spacer even rubber or thin metal plates,some people use leather. once i even used 2 rear mounts on the rear,but my kit came with 2 sets of diffrent length threaded bolts-short and long.
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Old 08-01-2009, 03:10 PM
13b 13b is offline
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Default Re: help! i need some brainstorming for this one.

are you talking about the long 3" or 4" bolts that came with the kit that are threaded on both ends?

i've always wondered hat those were for. is there a way to take the bolts out of the engine and replace them with the longer ones?
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Old 08-01-2009, 08:05 PM
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Default Re: help! i need some brainstorming for this one.

Rotate the engine forward to kick the rear up a little. Please do not drill the frame !! We'll figure something out. Here are some ideas : JNM Super Mount
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Old 08-01-2009, 09:40 PM
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Default Re: help! i need some brainstorming for this one.

to take out the threaded rods(bolts) put 2 nuts on the rod and use 2 wrenches at the same time turning each nut in oposite directions til there tight together(double nutting),now turn the inside nut and the rod should start to turn and come out. now u can put the new longer ones in.

but before u try this, try tilting the motor a little to get a little clearance between the chain,u dont need much.

Last edited by Cabinfever1977 : 08-01-2009 at 09:43 PM.
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Old 08-01-2009, 11:53 PM
13b 13b is offline
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Default Re: help! i need some brainstorming for this one.

well, now none of this is going to work because i found out when test fitting the motor, the pedals won't clear the motor when it's centered and level.

has this ever happened to anyone before?
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Old 08-02-2009, 10:49 AM
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Default Re: help! i need some brainstorming for this one.

You have to either bend the cranks out, or buy new ones... Old school cranks are narrower for some reason.
I have a solution for your engine mounting problem, I'll try to get some pics on here today.
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Old 08-02-2009, 11:44 AM
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Default Re: help! i need some brainstorming for this one.

Quote:
Originally Posted by 13b View Post
well, now none of this is going to work because i found out when test fitting the motor, the pedals won't clear the motor when it's centered and level.

has this ever happened to anyone before?
You have room to mount the motor higher to clear the pedals. For the front mount Sick Bike Parts and Live Fast Motors both have a front bracket that will work. There are others. I used an older one from Live Fast for one of my bikes and it worked well.

Universal Mount |Sick Bike Parts
Motor Mount Fat Frame 'No Drill' Motor Mount | Live Fast Motors
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