First Build - Huasheng 50cc - Questions...

Just finished a build with a 50cc Huasheng and a Grubee Stage III gear box, on a Schwinn Point Beach.

The engine dies when I slow down or stop with the gear box engaged. Is this normal? Does it cause damage when this happens?

Also, in regards to engine break-in, how long should that take? Are they supposed to run better or have more power after the break-in?

Thanks

Have you adjusted the idle screw? Did you use some old gas that you had around the house or new gas? I haven't noticed much of a difference after break in, about 200 miles. It shouldn't hurt the engine or gear box for it to die, just a pain to restart all the time. I have had one give me problems to idle. It turned out to be the gas after I had adjusted the idle screw for a couple of hours. Let us know how it goes.

I've taken the idle screw up pretty high, but it's doing the same thing. Also, I used new gas (premium).

So, are these things supposed to be able to leave the gear box engaged all the time without it dying? That'd be nice -- right now I'm having to engage, disengage, engage, disengage...

As long as the engine is idling low enough that the clutch is not engaging, yes. You should be able to leave the gear box engaged all of the time. It could be idling too high. Most of mine have been in a sweet spot about 2 turns counterclockwise from full closed, which is all the way clockwise. It is different for different elevations and temperatures.

Yep, too high and idle is more of a problem than too low.

Also, the clutch is a little grabby when new, so some break in may help. I have not disengaged my gearbox for over a year. I have even removed the handle.

__________________
29/10ths cubic inches of raw power.
HoughMade at WIRED.com: http://www.wired.com/cars/coolwheels...memade_bicycle

Strange...wonder why mine always dies when I slow down and stop. Got a bad engine maybe?

I doubt it. Probably just a little tweaking is needed. Do you have a way to raise the rear tire off the ground and keep your hands free? If you do, crank the engine and start turning the idle screw counter clockwise until your rear tire stops turning but the engine keeps running. This will get you close to where you need to be.

Good idea -- I'll do that as soon as I get home. Thanks.
Would it have anything to do with the mixture screw?
What else could be tweaked besides the idle and mixture?

Thanks for the info, guys. Last night I adjusted the idle by getting the rear wheel off the ground. I backed out the mixture screw about 1/4 turn as well. I believe the combo of adjusting the idle & mixture really helped with stopping with the gearbox engaged. I rode through town here and it didn't die on me once! Now I just need my bottom bracket conversion kit to come in and I'll be set -- it's taking forever for them to ship that to me! I have a pretty steep hill on the way back to my house -- I do live on Hill Street after all!

I am glad to hear you had some luck. These things are a lot of fun when they are working properly. Enjoy!