Eliminating the driven sprocket

Well think of it this way. If your car was stuck in 2nd gear, how fast can you go? You can start a car off in 2nd gear but it won't accelerate very fast and then it will top out at a relatively low speed. Now if you are able to shift to 3rd, then 4th then 5th now how fast are you going? Same thing applies here.

hmmmmmmm actually mine is stuck in first lol

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nice job guys! i went to work today after pablo told me about it and i was like duh all day trying to figure out what you all were doing for sure and now i see. you guys are geniuses. i cannot wait till it is available. i for one definitely want to try it. ghost welcome to the forum. we are all happy to have you with us. and pablo thanks for the pictures it was making me crazy and that craz has turned into big time excitement

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It should make the bike go faster on level ground because you'll have the ability to vary the gear ratios widely!

I want one!

Me too!

Actually, I'd be happy with a 36T sprocket right now....

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Very very nice and looks well made. I'll bet you can get into the white knuckle range easily. Is the next step in speed on a bicycle turning your hains into stains?
Keep up the good work.
Norman

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I'll answer your question with a question.

What is the advantage of a 21 speed mountain bike versus a 1 speed bike?

This thing would be ^&*ing with a Nu Vinci hub.

gday pablo and ghost0,
my stock happy time 48cc has a 44tooth i think? with this jackshaft set up are we getting a lot more pull up hills in the easiest gear? or is top end on the flats more where the improvement is? I suppose the range can vary a lot by choosing different chain rings and such? your marketed set up will be a standard configuration? or options available?
so looking forward to this!

Well if you have a multispeed bike and choose a "lower gear" than your current set up, sure you will pull up hills better by matching the power band to the situation. Same goes for top end. Our current set up (standard engine gear -supplied left driven gear-right jackshaft gear-freewheel gear) on most 5-6-7 sprocket rears, brackets the range of purchaseable bolt on sprockets.

It will be a little bit before we get it all sourced, bid, procured,etc but we are over the fundamental issues. Cost is also a factor - we want to get this thing as low as reasonable.

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Just to add to what Pablo said. If you want to get technical, the approximate ratios you will achieve will be between 2.9:1 and 5.8:1. This will be like going from a 29t rear sprocket to a 58t and everything in between.