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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

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  #1  
Old 03-22-2009, 10:21 PM
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Mopedamauter79 Mopedamauter79 is offline
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Default Mounting Suggestions

Is there a way to mount these engines to a large frame WITHOUT drilling a hole or using a already drilled hole to secure the engine. The engines simply do not come with brackets that are wide enough to account for the average frame. I have found unless it's a small tubing you have to use the large frame adaptors or grind down the frame so the bolts clear the frame.

Because I have a larger frame I had to have a hole drilled into the middle and have a large frame adaptor attached to original studs and a long bolt going through that into the hole.

I have been checking the bolts and nuts and everything seemed fine it was literally just one day it snapped right where the bolt goes into the engine.
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  #2  
Old 03-22-2009, 10:26 PM
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Default Re: Mounting Suggestions

oh yes. i take some longer metric bolts and cut the heads off. screw them into the motor and spread them apart. drop motor onto frame, bend them back in and put on the bracket. easy. really easy.
the bolts shown are actually rear mounting bolts, but you get the idea.
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  #3  
Old 03-22-2009, 10:37 PM
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Default Re: Mounting Suggestions

Hmm Interesting Idea.. Does that weaken the bolts at all ?
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Old 03-22-2009, 10:41 PM
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Default Re: Mounting Suggestions

i dont think so. youre not bending the $hit out of them, or anything. ive been doing it that way for 5 years, and have had no trouble.
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Old 03-22-2009, 11:02 PM
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Default Re: Mounting Suggestions

It's worth a shot. I'll head over to the hardware store and look into some stuff to get that bolt out. The bolts you use what strength are they ? Just standard ones you get @ the local hardware store ?
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Old 03-22-2009, 11:08 PM
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Default Re: Mounting Suggestions

i dont know the strength off hand. anything good is better than stock
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Old 03-22-2009, 11:29 PM
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Default Re: Mounting Suggestions

I just mounted my 80cc and all i did was file the alluminum mount to a wider mouth --as well as the longer bolts it works great !!
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Old 03-23-2009, 01:12 AM
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Default Re: Mounting Suggestions

The bolts themselves don't even clear the bike frame.
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  #9  
Old 03-23-2009, 08:56 AM
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Default Re: Mounting Suggestions

Quote:
Originally Posted by Mopedamauter79 View Post
The bolts themselves don't even clear the bike frame.

in length? get longer ones.
in width? spread them apart a bit.
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Old 03-23-2009, 09:22 AM
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Default Re: Mounting Suggestions

http://motorbicycling.com/f6/oversiz...lved-6427.html
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