Treachery
Moderator
IIRC, the GS is about 4-5 fast. Need to go ride it to check. 
Fasteddy
Member
FWIW,
My RC always reads about 3.4 MPH high and this corresponds to odometer readings as well, I have measured it with 'real' RADAR and LIDAR and measured miles. I apply a correction factor of 5.8% and my odometer readings work out, gas mileage makes sense etc.
It is digital not mechanical so the error is consistent at all speeds (tested with RADAR mounted on bike).
You know on all the other KTM's I have seen there is a method to change the wheel circumference on the instrument cluster. My SD990 displays the set circumference during self test even and how to correct the speed on the LC8 / LC4 can be found in the shop manuals etc.
So, awhile back when I was doing the valve re - shim I found a jumper that goes from a pink wire out of the combo instrument to ground, At the time I did not think much of it but figured I would explore it more in the future. The other day I found a shop manual for a 690 Enduro I had downloaded and was looking through it and found the procedure for adjusting wheel circumference.
CLICK !
I just removed the jumper, followed the same directions and presto! wheel circumference in MM increased by 5.8%, 1772 MM to 1874MM. My SuperDuke is set to 1870 BTW.
It of course is raining / cold here but I will re check the accuracy the first chance I get.
This leads me to further believe the speedo could be kept working easily after removing the ABS unit by using a non ABS hall effect sensor from another KTM model as I mentioned in some other thread.
HOW TO:
Remove jumper ( can be left out according to other models)
With 'TRIP 1' displayed press and hold 'MODE' button for ten seconds, wheel circumference is displayed in MM.
Press 'MODE' to increase or 'SET' to decrease (need to be quick or it will jump out of adjust mode).
Press and hold the MODE and SET buttons simultaneously to store new value.
Jumper is above the coil rearward of the steering head. (Jumpers plug has a push to release lock)
View attachment 1764
My RC always reads about 3.4 MPH high and this corresponds to odometer readings as well, I have measured it with 'real' RADAR and LIDAR and measured miles. I apply a correction factor of 5.8% and my odometer readings work out, gas mileage makes sense etc.
It is digital not mechanical so the error is consistent at all speeds (tested with RADAR mounted on bike).
You know on all the other KTM's I have seen there is a method to change the wheel circumference on the instrument cluster. My SD990 displays the set circumference during self test even and how to correct the speed on the LC8 / LC4 can be found in the shop manuals etc.
So, awhile back when I was doing the valve re - shim I found a jumper that goes from a pink wire out of the combo instrument to ground, At the time I did not think much of it but figured I would explore it more in the future. The other day I found a shop manual for a 690 Enduro I had downloaded and was looking through it and found the procedure for adjusting wheel circumference.
CLICK !
I just removed the jumper, followed the same directions and presto! wheel circumference in MM increased by 5.8%, 1772 MM to 1874MM. My SuperDuke is set to 1870 BTW.
It of course is raining / cold here but I will re check the accuracy the first chance I get.
This leads me to further believe the speedo could be kept working easily after removing the ABS unit by using a non ABS hall effect sensor from another KTM model as I mentioned in some other thread.
HOW TO:
Remove jumper ( can be left out according to other models)
With 'TRIP 1' displayed press and hold 'MODE' button for ten seconds, wheel circumference is displayed in MM.
Press 'MODE' to increase or 'SET' to decrease (need to be quick or it will jump out of adjust mode).
Press and hold the MODE and SET buttons simultaneously to store new value.
Jumper is above the coil rearward of the steering head. (Jumpers plug has a push to release lock)
View attachment 1764
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Treachery
Moderator
Too bleeping much. Thanks!
Going to have to address that when I've got things apart here soon.
Going to have to address that when I've got things apart here soon.
stevieboy
Member
I'm wondering if it is a cumulative average. All of the running times averaged?
Treachery
Moderator
It isn't cumulative. It resets to zero MPH after the bike is shut off for a relatively short time; less than it takes for me to fill up.
D
Deleted member 452
Guest
I'm going to give this a try the next time I take my tank off- Should I use the circumference for the front wheel?
Fasteddy
Member
I just increased it by the amount of error, unfortunately it did not seem to correct the problem.
D
Deleted member 452
Guest
Thanks for letting me know.
Treachery
Moderator
I rode on Sunday, and was only below (cough) 70 when I came to a stop or for the 3-4 minutes I was trapped behind grandma. Got home: Cumulative average speed: 34 mph. Geez.
OldVet
New Member
The other day I started off at zero and did 60 miles in exactly one hour, that equals 60 miles per hour in my book but this stupid thing said I averaged 37 mph???
Andy
Member
Did you ride at 60 mph throughout?
It would only give you an average of 60 if you started at 60 mph, rode at 60 mph all the way and ended at 60 mph.
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MotoKam
Member
I've noticed this since buying the bike new last year.
Each day, I stop at my favorite Starbucks to celebrate surviving another commute with a double espresso. It's 95 miles from my garage to Starbucks. The display says 73 minutes most days but gives an average speed of 40 - 45 MPH. That can't be right.
Being a simple programming issue, can't KTM correct the math and re-flash the ECU?
Each day, I stop at my favorite Starbucks to celebrate surviving another commute with a double espresso. It's 95 miles from my garage to Starbucks. The display says 73 minutes most days but gives an average speed of 40 - 45 MPH. That can't be right.
Being a simple programming issue, can't KTM correct the math and re-flash the ECU?
rick
New Member
Pretty sure going 60 miles in 1 hour should show and average speed of 60mph on the display. Like OldVet, mine shows ~37mph average speed in the exact same situation. Seems like a pretty obvious unit conversion error if 1 mph = 0.621371 kph then 60mph x 0.621371 = 37.2. They just screwed up the conversion factor on that display.
KTM hasn't ever responded to the couple of emails I sent about it.
Fasteddy
Member
FWIW,
The code that is causing the issue with average speed (not the only bug) would appear to reside in the Combo Instrument cluster separate from the ECU flash / map. The Combo Instrument appears to be programed from the 4 pin red connector on the harness just below it, given the difference in programming architecture I would guess there is no available update for the Combo Instrument.
The code that is causing the issue with average speed (not the only bug) would appear to reside in the Combo Instrument cluster separate from the ECU flash / map. The Combo Instrument appears to be programed from the 4 pin red connector on the harness just below it, given the difference in programming architecture I would guess there is no available update for the Combo Instrument.
OldVet
New Member
You need to go back to school Andy...
They never will. KTM doesn't give a rats ass about anything but metric. MPH, Gallons, these things mean nothing to them. I'm convinced they are doing so deliberately to "help" us 'mercans make the switch to the metric system. It's not just the RC that has these issues. The whole fleet does.
