Petcock Thread

[KCvale]

Nationwide Access (gasbike, kings) has outsourced fake GT2 Grubee frames from another vendor but keeping the registered name for promotion, which is why not just Grubee Inc won't sell to them, but neither will China Gas, the distributer of everything Skyhawk.

The big tell between frames is the presence of back V-brake bosses.
If you don't have them, it's a knock-off.

Note...
New GT2 frames are near production that will take a 3" wide wheel and a rear disc.
In short a bike like this Fito that will take a 2 or 4 stroke engine or even electric shifter.

Pretty much an MB like those without the kit peanut tank.

 

[rananthan3]

Do you have a Skyhawk frame?

What petcock did you use and where did you get it from?

I have two petcocks:

http://www.bicycle-engines.com/Fuel-Valve.html

http://www.gasbike.net/bike-motor-part-gasoline-tank-switch-cu.html

Neither of those are NPT (tapered). The frame I have is the GT 2 A frame from gas bike. We are not sure whether the threading on the bike is tapered or not. I am having trouble finding a 1/8" NPT petcock. Once I do, I will know for sure.

http://www.engineeringtoolbox.com/npt-national-pipe-taper-threads-d_750.html

Thanks again for your support.

 

[rananthan3]

I tried all of the following below. Plastic may work but that one was too big. The second one I have in there now just not threaded correctly. The last one doesn't have a valve but is 1/8" NPT and did not work. The conclusion is that the threads were not created properly or damaged somehow. The stock valves from gas bike should have fit correctly.

 

[rananthan3]

I went on my first ride around the block. Very fun! Gas still leaks around the edges of the petcock but it is minimal. I may try adding another layer of tape. I forgot to torque one of the bolts on the 4 G transmission. It got lodged in between the belt and the 100T pulley but no damage or injuries!