adamhay
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| posted on 12/7/05 at 12:32 AM |
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Hayabusa speedo
Anyone got the standard bike speedo to work accurately in a car? If so, how'd you do it?
Ta
http://www.youtube.com/watch?v=lnp0WDDW7xs
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stevebubs
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| posted on 12/7/05 at 01:22 AM |
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quote:
Originally posted by adamhay
Anyone got the standard bike speedo to work accurately in a car? If so, how'd you do it?
Ta
Speedohealer or yellowbox is what you're after
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Hellfire
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| posted on 12/7/05 at 07:31 AM |
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Yellowbox is probably more established. But in our experience Speedohealer is the way to go, purely because it has a broader range and also the new
one's have a maximum speed memory - which is nice if you know how it works 
HTH
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adamhay
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| posted on 12/7/05 at 01:52 PM |
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But where do you take the signal from? Now I may be very wrong here but isn't the standard speedo sensor located on the front sprocket cover?
Something that's ditched in a car install. Does it normally run off the front sprocket - i.e. rounghy 1 count per rev (ignoring the primary
reduction ratio) or does it count sprocket teeth?
http://www.youtube.com/watch?v=lnp0WDDW7xs
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OX
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| posted on 12/7/05 at 02:43 PM |
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no ,,the busa clocks arnt linear(cant spell it) mine only just passed the sva,,if you do use a speedo healer you have to use a perminate power feed
other wise it loses its memory,you might have to send it off to get the latest firmware in it,,i still havnt sent mine off,,,,,,this might fix the
linear problem tho,but i doubt it
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OX
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| posted on 12/7/05 at 02:46 PM |
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ops just read your post again,it uses 4 pulses per revolution,i used the original sensor and made a plate to fit the back of the sprocket adaptor with
4 equally spaced rivets with 2 small washers on to give the signal,works a treat apart from the other problem above 
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adamhay
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| posted on 12/7/05 at 02:56 PM |
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Thanks for the info OX......What do you mean about the Busa clocks not being linear.
Do you mean that if, lets say, 30mph is 12 pulses a second (3 complete sprocket revs at 4 pulses a rev), that 60mph WOULDN'T be 24 pulses a
second?
http://www.youtube.com/watch?v=lnp0WDDW7xs
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OX
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| posted on 12/7/05 at 06:36 PM |
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yes something like that,,,for the sva my speedo was 8 mph out at 70mph but 1mph out for 35 or something like that cant remember the exact figures
,,at top speed its nearly 15 mph out
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adamhay
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| posted on 12/7/05 at 06:46 PM |
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You mean the normal 'built in' 10%ish of so called air?....i.e. they make them read over on purpose.
I assume your speedo was always reading above true speed?
[Edited on 12/7/05 by adamhay]
http://www.youtube.com/watch?v=lnp0WDDW7xs
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OX
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| posted on 12/7/05 at 06:54 PM |
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yes maybe thats it
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