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roadmaster mountain bike


Discussion at Motorized Bicycle Engine Kit Forum in the Pictures and Videos forum. 26" roadmaster mountain bike $20 48cc dual start starfire gt-2 grubee engine kit 44T sprocket $186 gasbike.net ...
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  #1 (permalink)  
Old 04-09-2009, 06:48 PM
Cabinfever1977's Avatar
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Default roadmaster mountain bike

26" roadmaster mountain bike $20
48cc dual start starfire gt-2 grubee engine kit 44T sprocket $186 gasbike.net
top speed 31mph (i try to stay around 20mph)
carb mounted on right side
basket on front
gas used 1liter
Attached Thumbnails
roadmaster-mountain-bike-020.jpg  roadmaster-mountain-bike-018.jpg  roadmaster-mountain-bike-015.jpg  roadmaster-mountain-bike-011.jpg  roadmaster-mountain-bike-008.jpg  


Last edited by Cabinfever1977 : 07-29-2009 at 06:14 PM.
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Old 06-30-2009, 07:19 PM
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Default Re: roadmaster mountain bike

i have the exact same bike was it hard to mount it in the frame?
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Old 07-02-2009, 08:35 PM
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Default Re: roadmaster mountain bike

yes i had to cut and notch the frame to get it to fit on roadmaster,i since had bought a new bike a scwhinn del mar cruiser and put my engine kit on that. dont use the roadmaster sx sport or a next avalon.

its a very tight fit,dont do it,not worth it. use another bike if you can.
sparkplug/boot,intake/carb and air cleaner does not fit.

Last edited by Cabinfever1977 : 07-02-2009 at 08:38 PM.
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Old 07-02-2009, 11:35 PM
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Default Re: roadmaster mountain bike

thats the only bike i have that is a v frame
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Old 07-02-2009, 11:54 PM
Cabinfever1977's Avatar
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Default Re: roadmaster mountain bike

the engine will fit on the bike,its a tight fit thou.
#1 you will need to make or buy a curved or short intake for your carb.
#2 you might not be able to use stock airfilter,tie foam filter over carb.
#3 you will need a short sparkplug and you will have very little room if at all for the sparkplug cap. Goodluck.

do you have a cruiser bike or anything that might fit the engine,it dont have to be a v-frame as long as theres room for a engine.
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Old 07-03-2009, 12:07 AM
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Default Re: roadmaster mountain bike

well i have a full suspestion bike
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Old 07-05-2009, 11:51 PM
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Default Re: roadmaster mountain bike

that wont work unless you use a rear engine rack mount.
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Old 07-19-2009, 04:40 AM
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Default Re: roadmaster mountain bike

dude i just took out my dad's bike from the shed and it is the older version and the frame is even biger than the new one
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Old 07-29-2009, 03:39 AM
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Default Re: roadmaster mountain bike

I just did a Roadmaster install. It was a real pain. Wish I would have read this thread before building it. It did turn out sweet though. I had to grind out the engine mounts so it would set lower in the v frame. If I had the right tools to grind out the brackets properly, I would make this a regular build.
Tony


tony i got your picture posted for you.
caribbeancruiser
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Old 07-29-2009, 12:18 PM
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Default Re: roadmaster mountain bike

My neighbor and I both have Roadmasters. Stripped down they sit on the sides of our house we used them for parts. He got his for $50 and I paid $60. Who knows someday maybe we will do something with the frames.
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