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Motorized Mountain Bikes and Road Bikes Motorize a full suspension mountain bike to get a smother ride or for a little more speed try motorized road bicycles. This section is for sharing ideas on motorizing your mountain and road bikes.

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  #1  
Old 06-26-2016, 07:59 PM
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Default road bike mashup

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Here is what I have so far. I broke the head off the tightening screw on the clutch lever. One of the crank arms is too close to the exhaust and engine. I tried to bend the crank and broke it and I tried to bend the exhaust but I had no luck. When I resolve these issues this will be a kicken bike, at least to me.
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Old 06-26-2016, 08:08 PM
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Default Re: road bike mashup

[IMG][/IMG]

A few questions:

The wires to the ignition seem rather exposed to the heat of the engine is there a better way to mount these? I'm worried about melting on a long ride.

Any tips on bending cast aluminum crank arms? I think they are cast aluminum.

I live in a hilly area are there any tips for breakin? Should I start it and just let it run?

Clutch usage question, always pedal to start moving or if running rev and release to start with clutch?
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Old 06-27-2016, 12:13 AM
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Default Re: road bike mashup

Always pedal to start moving -- this ensures a long clutch life...
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Old 06-27-2016, 06:34 AM
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Default Re: road bike mashup

Thanks that is what I thought, I drive a manual transmission car so it is tempting to start with the clutch.
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Old 06-27-2016, 11:42 AM
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Default Re: road bike mashup

Keep in mind, it's a motorized bicycle, not a motorcycle. You need to pedal up to speed, about 10 mph before releasing the clutch.

As for break in procedures there is a lot of information here on that subject. Use the 'Search' and type in, 'Break In' and you'll have lots to read. Whatever you do, do not start the engine and let it run without riding the bike. The engine has no way to cool itself except the air moving over it. Long extended running/idling sitting still can damage the engine due to overheating.

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Old 06-27-2016, 12:55 PM
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Default Re: road bike mashup

Quote:
Originally Posted by totalnewb View Post
Thanks that is what I thought, I drive a manual transmission car so it is tempting to start with the clutch.
I've owned a few air-cooled VWs, and when a battery died, this was a great way to start them.
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Old 06-27-2016, 06:25 PM
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Default Re: road bike mashup

I've owned a few aircooled vw as well. Loved them. I'm glad to hear that about not sitting and idling the motor cause I was thinking of doing that.
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Old 06-28-2016, 10:41 PM
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Default Re: road bike mashup

It looks like I'm going to need a bigger sprocket. This one is way to fast when I open the throttle up a bit. I thought 44 tooth would be good and some would probably love it but man o man. I'll hook up the bike computer and check my top speed. I can tell already tho this is a hobby I will not shed easily. Unless the local authorities start giving me trouble. Its a small town so it could go either way.
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Old 06-29-2016, 10:20 PM
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Default Re: road bike mashup

Ok new problem, at first I thought this might be due to the break in procedure, 16:1 ratio, but I thought it would be worth asking. when I pop the clutch to start the engine it is jerky and rough, only when I get some pretty good speed does it start to smooth out. Normal, too rich, break-in symptom, what do you think?
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  #10  
Old 06-29-2016, 10:33 PM
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Default Re: road bike mashup

Ok so "runs rough at low speed" is normal and the solution is to pedal faster. I'm thinking my solution will be to by a larger sprocket.
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