Author Topic: Noisy speed sensor?? (Read 4970 times)

Geedog · « **on:** 26 March 2018, 08:19:41 pm »

Can anyone shed any light on an issue..?
At around 35-40 mph I’m getting a whistling sound from the front end of my 2003 FZS600, I thought it might be something stuck in the fairing so investigated that and came up with nothing.
I took off the brake calipers and spun the wheel with drill and found the sound coming from it appeared to be the sensor area or bearings.
Took off the wheel and the bearings were very stiff, unable to turn with fingers. Started process of removing them and once slightly loosened off the spacer bar have freed up considerably so not sure its anything to do with them...
The moving part of the speed sensor is a little slack - is there supposed to be any movement..? ( other than spinning..!)

Any help appreciated
Az

darrsi · « **Reply #1 on:** 26 March 2018, 09:03:04 pm »

As long as the sensor is seated properly, preferably with a good dollop of grease, then it's unlikely that it will make any noise.
If the sensor isn't positioned properly it will simply break and not work.

I'd hazard a guess if the sensor is well greased up it would more than likely be the wheel bearings causing the noise.

darrsi · « **Reply #2 on:** 26 March 2018, 09:06:29 pm »

Make sure your caliper pad pins are cleaned up too in case the pads aren't sliding on them properly.

mtread · « **Reply #3 on:** 26 March 2018, 09:46:51 pm »

I fitted a new sensor and didn't put enough grease in. It made exactly the whine /whistling sound you seem to have. It needed a huge dollop of grease to shut it up.

darrsi · « **Reply #4 on:** 26 March 2018, 10:20:03 pm »

Quote from: mtread on 26 March 2018, 09:46:51 pm

I fitted a new sensor and didn't put enough grease in. It made exactly the whine /whistling sound you seem to have. It needed a huge dollop of grease to shut it up.

Hopefully it is as simple as that, just second nature to me me now to grease the hell out of that area when it's apart.
Bearings still don't sound too ideal but always try the cheapest option first though.

Disorderlypunk · « **Reply #5 on:** 26 March 2018, 10:57:54 pm »

is there any notchy feel to the bearings,if there is its only a few quid to get them replaced (2 less pints this weekend)
even cheaper if you have a bearings supplier nearby that you can take the old ones to
dont hold me too this but i think the fronts are od40 id17 w12 so a skf 6203 2RSH is a possibility and should only cost a few quid if you have a local supplier

Disorderlypunk · « **Reply #6 on:** 26 March 2018, 11:21:03 pm »

scratch that - the bearing size is right but not 100% on that exact bearing number it might be a little too lightweight for the job
but a bearing supplier would be able to tell you for certain

darrsi · « **Reply #7 on:** 27 March 2018, 12:10:42 am »

Just buy sealed bearings!

Disorderlypunk · « **Reply #8 on:** 27 March 2018, 12:26:23 am »

thats what 6203 2RSH are they are sealed and im sure they are fine but i dont want someone to go out and buy them before i consult my little book of lost knowledge
(ok its a big book as i keep getting hit in the head and forget stuff)

celticdog · « **Reply #9 on:** 27 March 2018, 10:17:08 am »

Quote from: Disorderlypunk on 27 March 2018, 12:26:23 am

thats what 6203 2RSH are they are sealed and im sure they are fine but i dont want someone to go out and buy them before i consult my little book of lost knowledge
ok its a big book as i keep getting hit in the head and forget stuff)

fixed for you

mtread · « **Reply #10 on:** 27 March 2018, 10:29:49 am »

Forgot to mention, original sensor internal lugs are ceramic and break up with accumulated gunge. If you take the sensor off they will fall apart. Replacement sensor has plastic lugs, and much more robust. Just remember, Grease is the word :-)

Disorderlypunk · « **Reply #11 on:** 27 March 2018, 10:46:55 am »

Quote from: celticdog on 27 March 2018, 10:17:08 am

Quote from: Disorderlypunk on 27 March 2018, 12:26:23 am

thats what 6203 2RSH are they are sealed and im sure they are fine but i dont want someone to go out and buy them before i consult my little book of lost knowledge
ok its a big book as i keep getting hit in the head and forget stuff)

fixed for you

bloody hate it when that happens

Geedog · « **Reply #12 on:** 27 March 2018, 10:51:06 am »

Thanks all
Ive had a good look at the sensor which appears to be all plastic..thrown a load of grease in and reassembled.
The whining is gone now spinning wheel with a drill, Ill get the brakes back on and take her for a spin....fingers crossed it’s solved..

Geedog · « **Reply #13 on:** 27 March 2018, 04:51:48 pm »

Update, took her out and up to 50mph with no noises

, will take to work tomoz which will test to the max.
Thanks again all

mtread · « **Reply #14 on:** 27 March 2018, 10:23:33 pm »

Result! FocU does it again :-)

darrsi · « **Reply #15 on:** 27 March 2018, 11:20:35 pm »

kgjersda · « **Reply #16 on:** 31 March 2018, 07:59:32 am »

What grease do you use? Think i have the same problem...

bandit · « **Reply #17 on:** 31 March 2018, 08:27:47 am »

Quote from: kgjersda on 31 March 2018, 07:59:32 am

What grease do you use? Think i have the same problem...

Multi purpose lithium grease.

darrsi · « **Reply #18 on:** 31 March 2018, 01:18:58 pm »

Quote from: bandit on 31 March 2018, 08:27:47 am

Quote from: kgjersda on 31 March 2018, 07:59:32 am
What grease do you use? Think i have the same problem...
Multi purpose lithium grease.

Yeah, the thick treacle looking axle grease gooey stuff.
That's the technical term.

mtread · « **Reply #19 on:** 31 March 2018, 01:25:35 pm »

Quote

Multi purpose lithium grease.

Me too

kgjersda · « **Reply #20 on:** 01 April 2018, 01:44:55 pm »

Noted, thanks.

fazersharp · « **Reply #21 on:** 01 April 2018, 09:20:03 pm »

What about CV grease the gray stuff isnt that purpose made for constant moving parts

bandit · « **Reply #22 on:** 02 April 2018, 12:15:19 am »

Quote from: fazersharp on 01 April 2018, 09:20:03 pm

What about CV grease the gray stuff isnt that purpose made for constant moving parts

Although CV grease does contain lithium it also contains molybdenum disulfide & graphite the grey colour which is ok for metal to metal apps like your swinging arm but for areas which have plastic multipurpose lithium soap based grease is recommended.

fazersharp · « **Reply #23 on:** 02 April 2018, 11:00:14 am »

Quote from: bandit on 02 April 2018, 12:15:19 am

Quote from: fazersharp on 01 April 2018, 09:20:03 pm
What about CV grease the gray stuff isnt that purpose made for constant moving parts

Although CV grease does contain lithium it also contains molybdenum disulfide & graphite the grey colour which is ok for metal to metal apps like your swinging arm but for areas which have plastic multipurpose lithium soap based grease is recommended.

Ok great. I also have a tub of Silkolene RG2 grease so I am guessing that would be geed for both speedo and swingarm

kgjersda · « **Reply #24 on:** 02 April 2018, 02:14:25 pm »

Cleaned out the sensor and greased it up, sounds good again! No more noise.