Yes, I do have a GEBE. I can't compare systems. GEBE is the only one I've had. As I said, I'm not knocking their product--I guess what bothers me and mobilizes me on this issue is the experience I had with them when I first received my kit. I have described this elsewhere and below is a copy of what I wrote then:
I installed motor, started it without belt engagement, and the bike jumped and ran off with me on top barely able to hold on. I had a pretty good scare flying along a bumpy road going faster than I ever had on a bike. Finally I thought of the kill switch and killed engine. I could smell the belt--I know that burnt rubber smell. The belt was damaged, I think, by being run while slack at top speed over the belt ring.
The problem, obviously, is in the way the throttle is set. It is set too high. I read the manual on this issue. Checked, could find nothing wrong with how I had routed the throttle cable.So I took off the air-filter housing to look at the throttle cable hook up. It does not look like the illustration you provide, nor does it look like the illustration in the engine manual. I can only suppose that it has been set up incorrectly. I am sending a photo of what I have on my engine.Please advise.
Not hearing more from you Sat, I took matters into my own hands. I first tried to adjust the throttle in the manner described in the manual. Needless to say it was a fruitless venture because the thing had been installed incorrectly--at least for the purpose the engine was sold for. If it had been a lawn mower engine, maybe, not for a motor bike. For one thing the barrel nut had no threads to ride on under it. It was resting over the plastic sheathing of the cable housing.It was the classic lever connected to nothing. Finally in despair I removed the cable end from the throttle arm, and by dint of get effort with the wrong tools managed to cut away half an inch of the cable housing. I reintroduced the cable to the slot in the throttle arm and was finally able to get the arm to touch the idle screw.
So, I solved my own problem. Except I feel the belt was damaged, burned in the incident described in earlier emails.
These paragraphs are copies of what I sent to GEBE after the incident described. The lady send back a message wherein she criticized me for starting the engine while sitting on it and with the belt engaged--which I hadn't done.I started the engine while standing next to the bike and without the belt engaged. She then said that probably the belt had been damaged and I could purchase another from them if that were the case. Enough said.