Question about motor sprocket
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Road Warrior
Joined: Dec 2012
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From: Arkansas
Question about motor sprocket
I've got a question that I think I know the answer to, but wanted opinions from people who know more than me. This is not a debate on compensator vs solid. If I put a solid motor sprocket on and went a different teeth count, would I need to calibrate the speedometer? I'm thinking not since the speed sensor is on the transmission and that's not changing. What do the experts of HDF say?
Seasoned HDF Member
Joined: May 2008
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From: South Carolina
Actually it does matter.
Changing the motor sprocket size changes the ratio between the crankshaft and the transmission...
Changing the motor sprocket size changes the ratio between the crankshaft and the transmission...
Last edited by Dan89FLSTC; Jul 27, 2020 at 06:07 PM.
Cruiser
Joined: Apr 2012
Posts: 193
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From: California
I've got a question that I think I know the answer to, but wanted opinions from people who know more than me. This is not a debate on compensator vs solid. If I put a solid motor sprocket on and went a different teeth count, would I need to calibrate the speedometer? I'm thinking not since the speed sensor is on the transmission and that's not changing. What do the experts of HDF say?
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Road Warrior
Joined: Dec 2012
Posts: 1,255
Likes: 584
From: Arkansas
But would that change the speedometer calibration?
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Road Warrior
Joined: Dec 2012
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Likes: 584
From: Arkansas
Is the gear indicator a combination of engine rpm and ground speed?
Seasoned HDF Member
Joined: Dec 2005
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From: poway
Well sort of.. It compares engine RPM to vehicle speed measured at the gearbox. That ratio changes when you change the primary gearing.
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Road Warrior
Joined: Dec 2012
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From: Arkansas
2014 Limited. I'm thinking about replacing my compensator with the Darkhorse sprocket and going with the 32 tooth for a little more low end.
Last edited by penmaker; Jul 28, 2020 at 06:11 PM.
Cruiser
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From: California
Got it. I've never made that change, but have heard good things that compensator. If you go through with it please come back and give us some feedback and thoughts about it. Good luck.