Motorized bicycle

Atomic · Post by **Atomic** » Fri Sep 07, 2007 12:04 pm

My son's friend just finished this thing and rode it over to show him.It's the second or third one he's built, he just turned 19.Maybe there is still hope for the youth of today, I guess not all of them want to be computer geeks.The bike: The engine: The 5 speed derailleur: My boy (with the mohawk) and his friend:

4X4CHICHI · Post by **4X4CHICHI** » Sat Sep 08, 2007 12:24 am

Dude, that's tight.

Mavrik · Post by **Mavrik** » Sat Sep 08, 2007 1:43 am

Thats really cool.I tried to build something like that when I was a kid. I used a 3.5hp briggs and straton engine... belt kept slipping off.

djb383 · Post by **djb383** » Sat Sep 08, 2007 2:43 am

Now there's a dude that obviously does not live by MTV alone. That's awesome.

MRCN RCE · Post by **MRCN RCE** » Mon Sep 10, 2007 12:54 pm

Quote, originally posted by 4X4CHICHI Â»Dude, that's tight.+1

Kamikaze · Post by **Kamikaze** » Fri Sep 14, 2007 4:23 am

Interesting... I see it even has a speedo on the handle bars.

drunkenmaxx · Post by **drunkenmaxx** » Fri Sep 14, 2007 4:28 am

your soon looks like someone i would have hung out with in high school. that being said, keep your eye on him!

zionzr2 · Post by **zionzr2** » Fri Sep 14, 2007 6:32 am

when i wanted an engine on my bike we would use playing cards stuck in the spokes!

HARMLESSV8 · Post by **HARMLESSV8** » Fri Sep 14, 2007 1:33 pm

when i wanted an engine on my bike we would use playing cards stuck in the spokes!now thats old school !!!!!

TJinPgh · Post by **TJinPgh** » Sun Sep 16, 2007 3:07 am

Nice!Looking at the pics, I'm guessing the pedals turn when the engine is running. Would be cool to figure out a way around that.What is the engine off of? I know Poulan makes things like weed eaters and chainsaws.Where does the gas go?All we need now is electric start and we'll be ready to dyno that sucker Seriously, though, very nice.

Atomic · Post by **Atomic** » Sun Sep 16, 2007 11:08 am

The motor is from a chainsaw, the tank is under the seat, it's actually part of the chainsaw housing.The pedals don't need to turn when the engine is running, I think he scavenged a bicycle freewheel assembly and just adapted it to the bottom bracket (where the pedals are).@ Kamikaze:Yeah, the speedo actually works too.He said he has had it up to 30km/hr. and that's just in first gear. I had it up to about 20 just out front of the house, and man is it scary!Did I mention that the caliper brakes don't work real well? The quickest way to stop is kill the motor, and do a Flintstone type emergency stop with both feet. Honest.@ Drunken:If my son would consider you someone to hang around with, then you are welcome here anytime, (although since you don't own a Vibe anymore, that is one strike against you. )

TJinPgh · Post by **TJinPgh** » Sun Sep 16, 2007 3:39 pm

Quote, originally posted by Atomic Â»The motor is from a chainsaw, the tank is under the seat, it's actually part of the chainsaw housing.The pedals don't need to turn when the engine is running, I think he scavenged a bicycle freewheel assembly and just adapted it to the bottom bracket (where the pedals are).Yeah, it occured to me after I wrote my reply that if it was a chainsaw engine that the gas tank would be built in.Nice job on solving the pedal issue as well. I wouldn't mind getting some plans for it

Motorized bicycle

Motorized bicycle

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