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Old 03-16-2015, 01:50 AM
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mapbike mapbike is offline
Motorized Bicycle Elite Member
Join Date: Mar 2010
Location: Central Texas
Posts: 5,379
Default Re: Gearing and Fuel Economy

I agree that a ttike at high speed is a big risk, one little bobble and you'll be skipping and rolling across the road.

3600 rpm with a 4hp engine wont even get you to 30mph with a gear ratio that will have enough grunt to get you over a speed bump.

30-35 mph is possible with a 4hp engine thats set up right, but the rpms will need to be above 3600 to attain it and to get those rpms the governor needs to be bypassed.

Best wishes on the build and personally I dont recommend doing 25-30mph on a trike unless its a Harley
I dont always ride WOT, but when I do..I do my best to keep the rubber side down..Ride safely my friends!
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