09-17-2016, 01:30 PM | #1 |
Join Date: Jun 2016
Location: Arlington, VA
Posts: 258
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TT250 47 vs 50 rear sprocket
Got my 47 installed today. Initial test ride confirms a reduction of about 500 rpm at wfo (65-70 mph) speeds. No increase in top speed, just less rpm. Good indication that the hp curve is flat up there. I like it, lower gears feel much less tight, acceleration seems un affected. 47 vs 50 is 6% taller. Confirmed when what was 8200 rpm (~66 mph) became 7700. Bike felt like it could run all day at 8200, should only be better at 7700. Eventually I'll report MPG.
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