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Bikes, Hints'n'Tips => FZS600 Fazer => Topic started by: muddybuddy on 05 August 2014, 12:13:12 pm

Title: 3 wire speed sensor
Post by: muddybuddy on 05 August 2014, 12:13:12 pm

Does anyone know if I can use a different 3 wire speed sensor with OEM clocks? I was thinking I will have to custom mount the sensor head and probably change the plug to connect it to the Fazer loom. The bike cannot have the original wheel driven sensor due to the fitment of an R1 front end.


Thanks for any input here.


Mark

Title: Re: 3 wire speed sensor
Post by: keratos on 05 August 2014, 07:12:24 pm

Hi
f you have the OEM sensor then this looks (although I have never disassembled one) like a field modulation device that is converted into a speed measurement. I think you would need to replacement with one tha offers the same characteristics Is the R1 wheel  axle the dame diameter as the FZS as this might suggest the OEM sensor would fit - I'm not a mechanical expert so maybe talking poo here?? From the sensor electrical side, air gaps in the wheel/teeth/sensor also play a part as does operating temperature, the comparator and amplification stages. I dont know if the FZS does all this and how as I've never studied this in detail (taken it all apart and investigated/explored)

Title: Re: 3 wire speed sensor
Post by: muddybuddy on 11 August 2014, 01:19:06 pm

Thanks for the response keratos :)


I have solved the issue, I have fitted a FZ1 speedo sensor (identical plug but normally sprocket cover mounted) to look at the rear disc bolts, a little experimentation found that 2mm thick washers under two of the 6 disc mounting bolts results in the speedo reading spot on when checked with GPS. Happy days!

Title: Re: 3 wire speed sensor
Post by: keratos on 11 August 2014, 08:41:49 pm

good to hear, nice1, did the washers not affect the positioning of the caliper over the disc?

Title: Re: 3 wire speed sensor
Post by: muddybuddy on 12 August 2014, 01:34:59 pm

No, the bolts run just inside the inner edge of the caliper, the raised heads just clearing the ally caliper carrier by a mil or so.

Title: Re: 3 wire speed sensor
Post by: DebtMan on 14 December 2016, 10:01:22 am

Quote from: muddybuddy on 11 August 2014, 01:19:06 pm

Thanks for the response keratos :)


I have solved the issue, I have fitted a FZ1 speedo sensor (identical plug but normally sprocket cover mounted) to look at the rear disc bolts, a little experimentation found that 2mm thick washers under two of the 6 disc mounting bolts results in the speedo reading spot on when checked with GPS. Happy days!

Don't suppose you have any pics of how you mounted the sensor do you?


Cheers
DM 👍

Title: Re: 3 wire speed sensor
Post by: wraith600 on 24 November 2018, 01:07:04 am

any more information pix would be great i have tryed this but to no result so far :( realy dont want to spend £200 on a koso

Title: Re: 3 wire speed sensor
Post by: F4celess on 11 December 2018, 02:35:12 pm

Quote from: wraith600 on 24 November 2018, 01:07:04 am

any more information pix would be great i have tryed this but to no result so far :( realy dont want to spend £200 on a koso

Was about to say "go KOSO", then read your response! :lol

It's the most effective option (UPGRADE) once you go USD / completely naked, as the front headlight fairing + brackets usually come off too?
Don't be tempted by the cheap Chinese copies of the KOSO speedo units. These are very glitchy plus tend to fail prematurely.