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28-06-2020, 09:46 PM | #1 |
aka Phil
Join Date: Nov 2005
Location: derry
Bike: M900
Posts: 376
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Electronic speedo recalibration
Non-ducati but, i'm changing sprocket sizes on my other bike, a Yamaha MT03 660 and it's got an electronic speedo. The speedo is fed by a sensor at the output of the gearbox i believe so the different drive ratio will result in a false reading.
Has anyone ever fitted any speedo recalibrating devices before and/or any recommendations or tips? Thanks -- Phil
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28-06-2020, 11:11 PM | #2 |
Registered User
Join Date: Aug 2011
Location: Southampton
Bike: M1100evo
Posts: 2,465
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Healtech do speedo-healers https://www.healtech-electronics.com/products/sh/
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29-06-2020, 08:34 AM | #3 |
Registered User
Join Date: Oct 2019
Location: Chorley
Bike: M900
Posts: 160
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Probably not the right answer but why not change the rear sprocket instead ?
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29-06-2020, 08:44 AM | #4 |
Registered User
Join Date: Aug 2011
Location: Southampton
Bike: M1100evo
Posts: 2,465
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That'll also cause a problem because the output shaft will still be turning at different revs from what the OE program expects for any given road speed.
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29-06-2020, 12:09 PM | #5 | |
aka Phil
Join Date: Nov 2005
Location: derry
Bike: M900
Posts: 376
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Quote:
Thanks for the info guys, i'll get a look at them.
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29-06-2020, 10:22 AM | #6 |
Registered User
Join Date: Apr 2016
Location: Farnborough
Bike: M900sie
Posts: 185
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I bought one of these https://www.yellr.com/yb_home.htm nearly 15 years ago.
1980's legally-mandated speedo optimism with a tyre size/wheel change == insanely inaccurate readings. Ready-made harnesses for popular vehicles; but only power +/- speed signal in/out so not brain surgery to use the generic unterminated harness and add connectors. Fitted, calibrated against GPS (it needed a tad more than I'd calculated/measured). Forgot it was there because it Just Works... |
04-07-2020, 05:16 PM | #7 |
aka Phil
Join Date: Nov 2005
Location: derry
Bike: M900
Posts: 376
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[IMG][/IMG]
Ended up with this one from Healtech. Plugged in to the existing plugs in the loom and a few mins to programme in the correction. Good job. Despite the pic, it's only less than 2" long by less than 1" wide/thick (far away cow/near cow).
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