The YEC ECU Thread - Yamaha R1 Forum: YZF-R1 Forums
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post #1 of 5 (permalink) Old 04-19-2018, 08:42 PM Thread Starter
Just made this great wheelie.. did you see it?!
 
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The YEC ECU Thread

Thought I'd start a thread on YEC ECU questions. Some of the info seems hard to come by, hopefully there's people out there prepared to share...

First question the Comp TCS calculation, in the 17_YMS_EN.pdf I have it states:

Quote:
Function to correct the outside diameter difference from tires installed on the vehicle as standard equipment Can be corrected within a range of -0.5 to 0.5.
And then does not explain at all how to calculate it. Can someone provide a reference to the math?
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post #2 of 5 (permalink) Old 05-13-2019, 01:41 PM
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That'd be the correction factor of the OEM's tyre circumference vs the one that's currently fitted to the bike.
Example (fictional numbers): OEM: 620mm, currently fitted one: 630mm.
Difference factor formula: (630-620)/620 which would be approximately 0.016.
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post #3 of 5 (permalink) Old 05-13-2019, 11:09 PM
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yes what he said. theres a way to calculate it. the profile is a percentage of the width that it is tall plus rim blah blah would probably be easier to use a seamstress tape and go wrap it around the wheel. also more accurate

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post #4 of 5 (permalink) Old 05-15-2019, 01:34 AM Thread Starter
Just made this great wheelie.. did you see it?!
 
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So...
RS10 stock 650mm OD
V02 Slick 655mm OD

(655-650)/650 = 0.008

Or 1.5% of the max value.
Which sounds it won't change much in riding the bike.



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post #5 of 5 (permalink) Old 06-16-2019, 01:11 PM
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Sure but you can adjust that parameter as well to make the TCS kick in sooner or later; it says so in in the Japanese version of the YMS manual.
Not the calculation, that's just the way to calculate the difference factor between 2 values.
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