Genesis 29er+ Kid's ATV engine= WINNING

I suppose You're right haha. Somehow that escaped my mind.

I suppose with a centrifugal set up it won't be an extreme difficulty to make it go.

What size sprockets are usually used with a jack shaft?
 
Just picked up the same engine.
Came in a mini chopper that was drop'd by the shop.
I will be grafting it into a Specialized Hard rock.
Thanks for the insparation.....
 
Just picked up the same engine.
Came in a mini chopper that was drop'd by the shop.
I will be grafting it into a Specialized Hard rock.
Thanks for the insparation.....

Boxcar, That's AWESOME! I love the availability of parts for them!

I have some updates coming soon, I'm making headway! I can't wait to see your build!
 
As you can see, I finally broke off the chunk of JB Weld. The person who had it before stuck a piece of aluminum can there and globbed it on there. Not sure why, it is just a vent port. The only reason anything would come out of that is if the head gasket was blown (Not sure it was though from the looks of it).

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As for the cylinder, I wanted to try something that was new to me. This WD-40 rust soak blew me away!

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After!
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Good news! I have decided on the color scheme for my engine (It's a surprise) And while I wait for an opportunity to paint, I decided to start a template for a gas tank!

I've never tried to do so before, but the first try came out alright for 20 minutes and some cardboard.

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ALRIGHT..... Forget about those pictures. I came up with a much better mockup.


I spend some more time with a nice clean sheet of cardboard and measured a bit more carefully, and I came up with the design I wanted.

I am going to try to cut it out with most of the panels attached to minimize the amount of welding I need to do. (I will borrow a friend's welder.)

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Let me know what you think!
 
Don't know if there are any applicable ideas here but heres a link to a clone build. This was converted to a single speed by juggling gears in the damaged trans. The key feature is the belt primary drive. MUCH smoother than the double chain drive on the first similar bike I built. The advantage to these little engines is the rpms they will rev to. In excess of 9k, making a single speed feasible. Even with a ratio low enough to pull from stop the top speed is right around 40 if wound to the max. Here is a pic of the bike years later, grazing in the back of the garage. Its one of my few keepers. http://motorbicycling.com/showpost.php?p=397092&postcount=90
 

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Don't know if there are any applicable ideas here but heres a link to a clone build. This was converted to a single speed by juggling gears in the damaged trans. The key feature is the belt primary drive. MUCH smoother than the double chain drive on the first similar bike I built. The advantage to these little engines is the rpms they will rev to. In excess of 9k, making a single speed feasible. Even with a ratio low enough to pull from stop the top speed is right around 40 if wound to the max. Here is a pic of the bike years later, grazing in the back of the garage. Its one of my few keepers. http://motorbicycling.com/showpost.php?p=397092&postcount=90

I really like that idea! I may just go with a belt. I wouldn't mind having a bit of sound deadened.
 
Also, I was wondering: Would it be plausible to weld the initial drive pulley on the engine to the existing sprocket? What pulley did you use on the engine?



I have gotten some suggestions to put a back slanted front to my tank (to compliment the rake angle) And I reluctantly decided to give it a shot.
I am not so impressed with the outcome, but I enjoyed seeing my design change in front of me, knowing the final choice is mine : )

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Okay... I am ultimately happy with the 4th and final design.

It is the same concept of 'origami' as the second, with slightly different dimensions.

I also decided to give the bike a lower look, so I brought the stem down as far as I could go, so the angle I needed to mesh with is closer to what I wanted the front of the tank.

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I decided I would give it a shot with some metal.... I am glad I didn't buy the 18GA, I just used the 22 I had laying around. For just my hands, pliers, and vice grips I was able to get the general idea started!

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