Sram 2 speed

In my state, a moped is defined as:

a cycle with pedals to permit propulsion by human power or without pedals and with a motor of not more than fifty cubic centimeters which produces not to exceed two brake horsepower and which is not capable of propelling the vehicle at a speed in excess of thirty miles an hour on level ground. If an internal combustion engine is used, the moped must have a power drive system that functions directly or automatically without clutching or shifting by the operator after the drive system is engaged."

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So, it can shift, but it has to be automatic.

I've been reading up on the Sram 2 speed automatic hub, and found little information on their use on motorized bikes. A couple threads here and there, but it seems like nobody has ever used one successfully.

Upon further investigation, it seems that they shift way too early. Somewhere around 10 mph. I did find a tutorial on how to adjust it to around 15 mph, but I think it would be better around 20 or 25 on a MB. Here's the review:

http://mccraw.co.uk/sram-automatix-review/

So it looks like he bent the springs to make it engage faster. I was considering if I got one of these I could drill them out some?

But wait. Do you think it would even hold up against an engine? Seems very doable with a jackshaft, and it also looks very desirable since the police here seem pretty interested in me and my creations. A lot. And I'm not looking to make it faster, I just hate cruising at 9000 rpm.

"once the drive system is engaged"

That's why the CG clutch is deemed OK. This one will be used with a jackshaft, so the power would go through the auto hub.

It would be pretty nice if I could gear it so that I could take off without pedaling, and cruise at a comfortable rpm still.