speed sensor pulses?

HI all haven't been on for a while was wondering if anyone could tell me (or point me in the right direction cause i have searched high and low)how many pulses the speed sensor creates for one rotation of the wheel i ask this cause i have wired up a koso DB02R gauges to my 1995 RC36 and all is working just need to setup speedo to the right setting.:eagerness:


thanks in advance and let me know what you think!!!!

 

Have you looked at this company?

http://www.healtech-electronics.com/

They make a device to correct speedo and more.

 

http://www.bikersoracle.com/vfr/forum/showthread.php?t=122061

 

Thanks guys for your fast response just have one more question

My mph speed sensor gives out 3 pulses per one rotation of the front sprocket now I need to know how many times the front sprocket turns to one wheel rotation could anyone help with this I have standard sprockets on my bike which is 16/43 or even let me know how to do the math

Thanks again guys and girls




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Could anyone tell me if this correct

Rear sprocket 43T
Front sprocket 16T

43 divided by 16 = 2.68

So for one turn of the rear wheel the front turns 2.68 times

And then if I times 2.68 by 3 To get the number of pulses for one turn of the rear wheel = 8.04

I'm no good at maths just need some one to tell me if my math is right or just aload of bull

Thanks in advance


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I was just going to tell you roughly the same thing! 43 divided by 16 is 2.6875 X 3 = 8.0625

Few more decimal places, gives you a little more accuracy.

 

So if I set my wheel circumference to 1840mm and my pulses to 8 that should be pretty accurate will .0625 make much difference in relation to my speed and distance .

Can only use whole numbers on the koso clock.



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OK, 8.0625 divided by 8 = 1.0078 X 1840 = 1854.35, so if you use 1854 instead, that should compensate for using 8 pulses.

 

Thanks allyance will give it a go and test it against my gps

Test with my gps today and it seems to be all good thank again allyance

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Dixon, are you sure your mph sender gives out 3 pulses per rotation? I was thinking only the km/h senders did 3 while the mph ones did 4. There should be a number stamped on the sender. Either 3 or 4.

Also, did that Koso gauge give an option of 8 pulses?

I'm installing their EX-02 gauge and it only let's you choose 1 to 6 pulses. I converted by 86 bike to the sprocket mount senders of the 90 and up bikes. I bought a 97 model sender and it has a 4 stamped on it. With my gearing I think I'll have 11.5 pulses per tire rotation.

I'm gonna try to use it by setting the koso gauge to the max 6 pulses and the tire size to a larger number 2500 (max). This might work. If not, I'm gonna swap in a km/h sender to drop my pulses down to 8.6 pulses per tire rotation. That should work for sure.

EDIT: I ACTUALLY NEED TO GO TO A SMALLER TIRE CIRCUMFERENCE NUMBER, NOT LARGER.

 

Dixon, one more question.

Did you connect all 3 koso speed sensor wires to the Honda sender (power, ground, speed output)?

Or did you keep the stock power and ground wires and only connect the speed output wire to the koso gauge?

 

I would just mount a sensor at the front fork that measures speed by actual wheel rotations, rather than use this stupid transmission sensor.
I have a Vapor instrument gauge on my SV650 (because it has a GSXR-750 front end) that gets its speed reading from a sensor running directly from the unit glued to the front right fork, that picks up a signal from a magnet bolted to the brake rotor carrier.

Edit: errr... this thread is 2 years old. Damnit.

 

Yes, that is what Koso recommends, but its not that easy on my bike. My front caliper bolts are flush mount Allen head so I can't bolt on their bracket. Second, my rotor bolts are stainless steel so the little magnets don't stick in the bolt holes. Gluing them in might make it impossible to get them back out later on.

I might run it off the back wheel because I'm still running steel bolts, I'd just have to fabricate my own sensor mount and extend the wiring.

It just seems easier and cleaner to run all 3 koso wires to the factory speedo sensor. That way the voltages should be correct. If I need to swap in a KM/H sender to get less pulses then that should be pretty cheap. Maybe $20-$30.

I'm open to ideas if you have more.

 

You just use double sided tape to mount the sensor to the fork end (it should be incredibly light). And I don't see an issue with gluing a little magnet to the rotor.

 

Here's an update. I verified that the Honda speed sensor gives out four pulses per rotation. So the little white 4 stamped on the side is correct. It's a pretty good bet that the km/h speed sensors that have the 3 stamped on them only give out three pulses per rotation.

After identifying all the wires, I hooked up all three wires from the Koso gauge to the Honda speed sensor and it works fine. Even though my Koso guage only goes up to six pulses per rotation, I can compensate for that by making the tire circumference smaller. That has the same effect as increasing the number of pulses.

The more pulses you set, the slower your speed gets. If you get to 6 and you need to go slower still, just decrease the tire circumference. I can go from stock 1890mm all the way down to 300mm. Every time you halve the circumference, you halve the speed. So I should easily be able to compensate for the 11 to 12 pulses I'm expecting to get per rear wheel revolution. I'll probably set the Koso gauge to 6 pulses and about a 1000 mm circumference and then fine tune the 1000 mm up or down to get it just right.

 

Off topic, but how do the clip ons fit? No interference with the tank or fairing?

 

Oh! pretty old thread:numbness: