looking into motorizing my bike

Y

yours in unity

New Member
I've got a full suspension gt xcr 5000 mountain bike. its my first choice of bikes to motorize. a few things come to mind though, 1st thing is that its got a pretty small space in the middle of the frame, i dont know if any motor kits would fit. the 2nd thing is, with the rear shock, it seems like it might cause some issues with the tension or alignment of the chain. I also have an old Specialized mountain bike with what i believe is the typical "v" frame. i know there'd be room for the engine on that one, but i dont quite get the picture of how the mountain system works. do they normally accommodate thick and thin frames?

By the way, i wrecked my car and was looking into easy and affordable daily transportation, and this is a lot more interesting than a scooter or moped
 
good to know. so the full suspension is pretty much out of the question. are there any kits anyone could recommend for a thin framed mountain bike? has anyone gotten a 4 stroke engine then the rest of the kit separately? I've been hearing about 3hp 4 strokes that they make clutches for go-carts. it seems like that might get more expensive than the kit though.
 
My first build was a Gary Fisher with over sized tubes, but a standard "V" frame. It was lots of fun, I came up with some simple motor mounts using electrical conduit brackets and metal electrical box covers. I think all told I spent and extra 12 bucks for mounting materials. I used my bike for a daily driver most of last summer.

I did have to rebuild my carb while sitting on the curb. Some crap got stuck in the float. My muffler rattled off once and scared the bejesus out of me. And there are lots of other adventures I had as a result of the engine not functioning as planned, butt I had tools in my back pack and I even had to pedal home once, but it was cheap fun transportation.

Remember with the in frame two stroke, half the fun is tinkering with them.
 
That's why I just ordered one.

I got so many hours into building my Chinese 2 stroke, I can only imagine the hours of tinkering ahead.

Number 2 with the friction drive Robin Subaru on the back won't look so "cool", but trigger throttle and centrifigal clutch not to mention a fan cooled industrial motor will make for worry free riding.
 
You could do what I did & make a front rack to motorize the front wheel. This keeps the pedal drivetrain isolated from the motorized side & can switch easily back to unmotored easily without permanent bike modification.
-lowracer-
 
By the way, i wrecked my car and was looking into easy and affordable daily transportation, and this is a lot more interesting than a scooter or moped

By definition you ARE building a moped! I have a 26" beach cruiser with a 49 CC china girl and it seems like there is always something that needs to be adjusted but I am actually enjoying all the tinkering. Haven't had any real major issues yet but I can see the day coming where I will want another bike, probably with one of the four strokes on it.
 
I just bought a DAX friction drive with the 4.2 hp GT50R. Duane says I can cruise up hills now without pedaling. I used to have (will be switched as soon as the Dax arrives) the old 24.5 cc Golden Eagle, but in addition to pedaling up every small hill, had to upgrade to 12 guage spokes and buy a new belt every season. I live in the mountains now and am looking forward to trouble free and no pedaling!
 
yours in unity said:
By the way, i got my license suspended and was looking into easy and affordable daily transportation, and this is a lot more interesting than a scooter or moped
Click to expand...

There FYP (fixed your post) to fit my situation. And ya, technically it's a moped, but when you pass a school yard on a moped all the kids don't come running over to their fence , screaming and raising their hands in the airdnut
 
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