First bike build

Ive been at this for at least 3 months. I wanted to use a mountain bike, so i could use the five speed on the back wheel. I had an old huffy just kinda laying around along with a number of various weed wacker engines. Unfortunately, it wasnt able to move me, even with all the gearing down.
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i used an old water pump houseing for my jack shaft and got the tiny chain and sprockets off some chinese e-scooter.


So i went and got a 79cc HF 4 stroke. It just barely fit in there, but now ive got it almost all put together. Im waiting on my clutch, chain, and 75 tooth sprocket. I havnt done the math yet, im just hoping itll be able to pull me along.
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Here ive added the tank that came off the engine and an exhaust ive put together.
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It was going to have a belt tension clutch system but then i decided on a centrifugal clutch. I need to hook up the throttle too.
Thats all i got so far.
 
You are quite a mech. First time I have seen a pump used as a jack shaft. Dig it.
 
Machinest by trade so I have access to all the tools.
I just added a cross bar right above the kick stand for my feet. Ill probably have to add some shielding on the left too, so my leg doesn't get mangled or burned.
 
Okay. I envy your machinest ability. I have a small Unimat I am trying to learn to use. I found out from my neighbor that there are classes at the college I can take on milling, lathe work and welding.
 
Ya, I'm just finishing up my associates degree at the community college. I recommend taking some of the classes or the whole program. I also have a mini metal lathe but find it isn't very helpful for most of my projects.
 
Well, I gotta say that I also admire your ability to cobble unusual stuff into a working system.

I was also worried about your feet getting mangled and burnt, too.

You'll be careful about that, right?

Best of luck and have fun.
 
Thanks! I dont want to think im cheap, just creative.

and ya ill be safe on it. Ive had my bad experiences on motorcycles.

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There's my foot rest, not to exciting.

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stock throttle assembly and my after throttle linkage
I just quickly turned the cable retainers on the lathe

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very simple but it works good
 
So its been a while since Ive been on here. Since then i finished the bike and was riding it around quit a bit.
I made a hub for the big sprocket and was able to design and make the small spocket.
I switched up the exhaust because everyone thought it looked dangerous.
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But some one must have wanted it pretty bad cause when I woke up one sunday morning, my bike was gone off my second story balcony where i kept it. All that remained was a ladder (probably stolen too) leaning up against the railing.
 
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