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Old 03-27-2015, 05:22 AM   #6 (permalink)
ProDigit
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It seems like gas mileage is well when riding below 40MPH.
But anything above 60MPH, with a little headwind actually is much lower in MPG than with my previous sprocket.
It makes me believe I'm lugging the engine with this setup.

I suppose I could just ride in 4th gear...
I also notice holding open the throttle at a certain position, in 4th gear (say going 65MPH), makes it go slower in 5th gear (55-60MPH).


These results make me think I'm lugging my engine, and should get a bigger rear sprocket next time the sprocket needs a change (probably in a good 5k miles, a 26t).

The engine overall is cool, almost always.
Way cooler, even when ridden hard, than when riding with the stock gears.
I remember the days when I would exit the interstate, and my engine was idling at 1580+ RPM (I have a digital tach installed).
The summers where about 10 degrees hotter as well.
But now it barely idles higher (1440RPM tops, and drops quickly to 1380RPM).
It tells me that the engine is running a lot cooler, when it runs lower RPM.
It's the opposite of what 'another (I shall not name him) person' has been claiming should happen.

If a 26t sprocket works well, I might see if I could increase compression on this bike by a bit; seeing that it runs cooler, therefor it should have lost a bit compression (as compression increases with engine heat)...

Just a thought....
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