old - Fazer Owners Club - old
Bikes, Hints'n'Tips => FZS600 Fazer => Topic started by: Pal on 19 September 2014, 01:18:57 pm
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Some of you may have seen my mileage thread, I didn't want to confuse anything by posting in there, the thing is my trip odometer don't seem to read right.
When I filled up last time I set the second trip to 0, I have since done four trips to work, which is a 64 miles round trip (confirmed on my old bike, the car and bing maps). Now after these four trips I would have expected the trip meter to read 256 miles, but instead it reads 238.
Has anyone else had this?
I will check the front tyre size is correct as that could put the reading out.
Incidentally this makes my mileage even more impressive :)
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I would have expected the trip meter to read 256 miles, but instead it reads 238.
:think Thats just because the bike is quicker
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Some of you may have seen my mileage thread, I didn't want to confuse anything by posting in there, the thing is my trip odometer don't seem to read right.
When I filled up last time I set the second trip to 0, I have since done four trips to work, which is a 64 miles round trip (confirmed on my old bike, the car and bing maps). Now after these four trips I would have expected the trip meter to read 256 miles, but instead it reads 238.
Has anyone else had this?
I will check the front tyre size is correct as that could put the reading out.
Incidentally this makes my mileage even more impressive :)
It won't be anything to do with the tyre.
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That is about 7% low, very strange. Looks as if your tyre is larger than expected. The circumference should be 1840mm. You could simply measure the real value.
The speed sensor gives 4 ticks per rotation. Any failure, or wrong sensor type, would give a much larger deviation.
Last thing I could think of would be that the speed signals are electrically marginal and a few get lost from time to time.
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When I go to Wales with my dad we both set our trips at the start of the ride and also the start of each day. Every time, mine reads about 5% or so less than his however mine is always closer to the google maps estimated distance so we thought his was over reading?
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Mine does this although I only noticed after 250 mile trip to the in-laws. Error was about 3% not the 7% like yours which sounds quite a margin. I put it down to an old bike, old wiring, old ECU, old speed sensor - on my 2000 FZS. Doesnt bother me really, I mean we're talking about 7.5 miles out of 250. My daily commute is 26 miles round trip so that 0.78 miles error. Not worth bothering with - for me.
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It won't be anything to do with the tyre.
If the tyre is the wrong aspect ratio it will be taller, therefore the circumference will be more giving a wrong reading for a given amount of revolutions of the wheel.
Simple science.
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A 110/80 or 120/70 tyre would easily throw the clock out that much as both have a bigger circumference then the 110/70
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It won't be anything to do with the tyre.
If the tyre is the wrong aspect ratio it will be taller, therefore the circumference will be more giving a wrong reading for a given amount of revolutions of the wheel.
Simple science.
You could always give us a clue as to what tyre you're using?
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(http://img.photobucket.com/albums/v476/Kwakapal/DSC_03831_zpsb7985bf7.jpg)
I think this might not help