Fat Bob mini power-wheelie
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Road Warrior
Joined: Nov 2008
Posts: 1,789
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From: Double Oak, Texas
Fat Bob mini power-wheelie
Finally had some time to get a video of the bike an it's mini first gear power wheelie. It didn't do these with just the 103" upgrade... but it's character changed entirely when the stock sprockets were changed.
Original front sprocket: 30 tooth, replaced with 32 tooth
Original rear sprocket: 66 tooth, replaced with 70 tooth.
It is now geared much lower than stock, too low as in 6th gear at 70 mph it is turning 3,000 RPM where it used to be I think about 3,000 RPM at 80 mph.
Anywho, all that is necessary in first gear at about 5-10 mph is just whack the throttle open, no clutch action, and up comes the front wheel a few inches....
Click in photo, takes you to photobucket
Original front sprocket: 30 tooth, replaced with 32 tooth
Original rear sprocket: 66 tooth, replaced with 70 tooth.
It is now geared much lower than stock, too low as in 6th gear at 70 mph it is turning 3,000 RPM where it used to be I think about 3,000 RPM at 80 mph.
Anywho, all that is necessary in first gear at about 5-10 mph is just whack the throttle open, no clutch action, and up comes the front wheel a few inches....
Click in photo, takes you to photobucket
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From: Ogden, UT
but it's character changed entirely when the stock sprockets were changed.
Original front sprocket: 30 tooth, replaced with 32 tooth
Original rear sprocket: 66 tooth, replaced with 70 tooth.
It is now geared much lower than stock, too low as in 6th gear at 70 mph it is turning 3,000 RPM where it used to be I think about 3,000 RPM at 80 mph.
Original front sprocket: 30 tooth, replaced with 32 tooth
Original rear sprocket: 66 tooth, replaced with 70 tooth.
It is now geared much lower than stock, too low as in 6th gear at 70 mph it is turning 3,000 RPM where it used to be I think about 3,000 RPM at 80 mph.
You sure about your tooth counts?
According to your numbers you only changed from a final drive of 2.976 to 2.960 adding teeth to both would negate any real gains in gear ratio.
You can check gear ratio changes here:
http://www.bigboyzcycles.com/Gearratio.htm