Project 49cc GIO Pit Bike

[waynev]

Thought i'd share some pic's of the GIO 49cc 2 stroke pitbike that i'm working on. I already have a stock army camo one and it's a blast but it's a little wheelie happy with me being 5'-11" 175lbs so i decided to modify this sweet little yellow one that i got.

First off was some graphics, yeah it ain't no Suzuki but the yellow color inspired me to theme it that way. I used some 30min epoxy to fill in the handle holes in the back so i could add a number plate and my number. It's nice having a vinyl cutter in my basement, it made the graphics easy.

Next up was to cure the wheelie happy bike, i decided on fabing up a 4" longer swingarm which my buddy CNC'd out for me from 1/2" aluminum, i knew the stock shock would be too soft with the longer swingarm so i used one of those performance shocks from GIO for the 200cc Beast, it works good but is too soft in the stock top mounting location, i will have to weld on another mount futher back to get the shock straighter up which will increase the spring rate.

So far this is where i'm at, i still have to cut and weld on the caliper, kickstand and chainguard mounts, then it's some new fuel line and a filter ( i don't like the stock stuff ) and then some handlebar risers and then i should have a sweet bike for riding motorhome to motorhome at the race track, speaking of which i may also have to add a cupholder, lol.

Here's some pics so far.

http://i646.photobucket.com/albums/uu188/waynebrandy/100_1424.jpg

http://i646.photobucket.com/albums/uu188/waynebrandy/100_1434.jpg

http://i646.photobucket.com/albums/uu188/waynebrandy/100_1436.jpg

http://i646.photobucket.com/albums/uu188/waynebrandy/100_1438.jpg

http://i646.photobucket.com/albums/uu188/waynebrandy/100_1441.jpg

http://i646.photobucket.com/albums/uu188/waynebrandy/100_1440.jpg

http://i646.photobucket.com/albums/uu188/waynebrandy/100_1439.jpg

[Reveeen]

Now all you need is a tune-able carb and a real expansion chamber.

[waynev]

Yeah, i was thinking maybe a Walbro carb, not too sure if i'm going to mess much with the exhaust though, other than taking the dual cans off and only going with a single one from the F1/F2 pocket bikes. So far the other stocker one i have runs fine so i probably won't do much engine wise to this one.

[Reveeen]

How can you resist?

http://www.tecnigas.com/o/model.php?codi=38&cat=9&idioma=en

The claim is almost 30%

Dell'Orto.

[MICRider]

Looks cool! I have to say though, I am envious of the vinyl cutter... Do you work for a sign shop?

[waynev]

How can you resist?

http://www.tecnigas.com/o/model.php?codi=38&cat=9&idioma=en

The claim is almost 30%

Dell'Orto.

Not sure i could fit that in my bike, the routing is different than the pocketbike type ones.

[waynev]

Looks cool! I have to say though, I am envious of the vinyl cutter... Do you work for a sign shop?

Yeah i worked at a sign shop for 10 years, not now though, when they were going to sell the old plotter i decided to buy it as i was already doing lots of racecar lettering and also a few trucks/vans on the side so it was a give in to get it. It comes in very handy and i also use it for plotting out my RC airplane plans, it will do 48" x whatever you want, sure helped making my pitbike look better.

[Weldangrind]

Any interest in one-offs for fellow China Bike riders? :D

[waynev]

Any interest in one-offs for fellow China Bike riders? :D

Are you needed something ?

[Weldangrind]

I'll send you a PM. :D

[waynev]

OK, with the World of Outlaws Sprint cars coming next week to a track near me ( 2 day show on a long weekend :D ) i thought it was about time to get the pitbike finished, spent the day at the shop and got the handlebar risers done, did some cutting and welding to convert the stock 2 can muffler to one of their F1 pocket bike ones which is a single muffler, i ended up using the Beast rear performance shock with a spring from the 125cc dirt bike which was much stiffer so i didn't have to mod the shock mounting point on the frame, fabed up an aluminum plate to mount the rear caliper and TIG'd it on the 4" extended aluminum swingarm and fabed up an angle bracket so i could use the stock kickstand.

When i got home i redid the fuel lines and filter with some better stuff and added some fuel, fired right up, i'm happy now, just deciding on whether to go down 1 tooth on the front sprocket or add 4 to the rear for a little more take off with my weight on it, then i have to make a longer chain and i'm off to the races, literally.

Here some pics of the near completed bike ( only a gear and chain to go), hopefully i have time to fab up a cupholder this week.

http://i646.photobucket.com/albums/uu188/waynebrandy/100_1555.jpg

http://i646.photobucket.com/albums/uu188/waynebrandy/100_1557.jpg

http://i646.photobucket.com/albums/uu188/waynebrandy/100_1556.jpg

http://i646.photobucket.com/albums/uu188/waynebrandy/100_1558.jpg

[Weldangrind]

That looks really good! 8) I never did understand the two can setup.

When Son of Weldangrind had a 125 pit bike, I considered welding a small bridge between the two frame points under the seat and adding a roller blade wheel as a wheelie bar. When I was done re-gearing it, it went well beyond a wheelie machine to a tractor.

What size front sprocket is on there now?

[waynev]

The front is a 17 and the rear is a 54, they are the 8mm chain size though, might be hard to find, i did just draw up a 60 tooth rear and sent it to my CNC aluminum guy, i'll try that route first and see how it works, i don't need it too fast, and i don't want a rocket takeoff either or else i'll have to make a self levelling cup holder.