Thruster Fixie 80CC Motorized Bicycle

Reposted with Creative commons Ride of the Valkyries.

Built this after my 150CC died on me. My first 80cc motorized bicycle and maybe last build because I think I'd rather ride on the road than on the side. But still it was a lot of fun and frustration building her up. The Thruster Fixie bike was from Walmart for $99. JB weld on the rear cog and lock ring. Bolted the 44T directly to the existing cog.

Category:

Education

Tags:

• 80cc motorized bicycle
• thruster fixie
• Fixed-gear Bicycle
• Motorized Bicycle

[bmoneyek]

Thanks for the quick responce, cruizer frames aren't really my style. This will be my 3rd build and I really like this bicycle a lot, shes not going anywhere... and Im 6'1 so its like perfect height for me.

Did you ever think of using high grade loc-tite rather than drilling and using jb weld? I think that's what I'm going to do.

Also I was considering trying out the standard 18t fixed gear that comes on it.. I know my acceleration will be slim to none but I bet it'd hit close to 50 haha.

[xetaprime]

@bmoneyek Two reasons why I recommend against. I feel the frame takes too much vibration but maybe that's okay for you. I understand that the style of a cruiser to be problematic. Also I felt I was just too high off the ground- due to it being a road frame.

If Loc-tite works go for it. I was winging it. I'm good with whatever gets the job done :)

Best of luck!

Xeta

[bmoneyek]

Hey don't hate, I litterly just bought this same bike for motorizing. Is it true that the silver piece that holds the fixed gear sprocket threads on backwards? Meaning you go clockwize to loosen it? Id rather be sure before I go mess it up.

[xetaprime]

@bmoneyek No hating :) I believe so, yes. The locking washer needs to be fixed somehow or it may unscrew. At least that's what I read. I JB Welded it on but first drilled some notches in the hub to be sure. It's not meant to be on the left side of the bike I believe. I will say it held through all my testing. One reason I made it permanent was that I read the hub itself is really cheap and may strip threads under normal use. Honestly if you can return for a cruiser frame I would. Live and learn.

[cuakomaone]

What a waste of a good motor. Well good in terms of it works, I don't know about the performance of it. You shouldve used a beach cruiser though. I love fixed gear bikes but Walmart has some embarrasing ones!

[xetaprime]

@cuakomaone I hear ya. Shoulda woulda coulda. This is how we learn.

[MADARINNINJA]

Fuckin mcdonalds bike hahaha

[yard1sale1dale]

@xetaprime Find all about them at vvvvvv*motoredbikes*com I recommend a simple mountain bike with a friction drive and pocketbike engine. You can get the whole thing done for $500 with a used bike, even put a banana seat on it if you want, be cheaper than a moped and just as fast.

[bmoneyek]

Thanks for the info.

I'm running a 49cc rather than the 66/(80cc) so vibrations typically arnt as bad to begin with. I also wrapped the frame with electrical tape under the mounts(and all of the other bolt-on's from the kit to protect the paint) and dampen it a little. I guess if your used to riding mopeds tho, even a very well dampened bike would feel shakey to you..

[xetaprime]

@deamnr111 (sigh)

[deamnr111]

Lazy

[xetaprime]

@xantbeezy123x Sorry, I no longer own the bike. Not sure exactly.