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Old 06-28-2005, 09:19 PM   #46
JediBri
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FWIW my S has all but stopped chirping in the year since my last post on this thread. I still hear a very faint chirp from a stop.

The 950 rocks!
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Old 06-29-2005, 12:14 PM   #47
RAGrote
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Quote:
Originally Posted by Katoum
While entertaining as it may be to some, it has been a unsolvable mystery for me since I started this thread.
I'm going out on a limb here and telling you that it is absolutely the air rushing past the carb slides.

Pull the airbox cover and the hinged door on the top assembly.... you'll quickly discover the sound coming from the carbs.

At least that's what my highly trained and tuned audiological pickup devices tells me where it is.

Truly... Try it and be at peace.

Sorry to make fun of your plight.
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Old 08-01-2006, 09:53 PM   #48
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Mine does it too !!

I did a search to find out what the heck it could be and low and behold seems like half of them do it!

A free waste gate.......only no turbo and extreemely low revs!!!

Back happy in my riding............................................
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Old 08-02-2006, 04:51 AM   #49
Johns-Bikes
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Quote:
Originally Posted by Pyndon
Mine does it too !!

I did a search to find out what the heck it could be and low and behold seems like half of them do it!

A free waste gate.......only no turbo and extreemely low revs!!!

Back happy in my riding............................................
Yeap, I only just bought an 04 with just 1300km's (800 miles) showing and on first rides around town I thought I had collected Tweety bird !! But being here in Oz it's more likely a Budgie...

My first thoughts were clutch; what was that thread about someone's clutch nut that was lock tighted but only half done up ? If I remember right even the spring washer was loose.

Come on Pyndon, with your skills on the spanners could you have a look for us at the next oil change ?

JB

PS and my turbo Falcon (Ford car) doesn't even chirp, only the back tyres do sometimes...
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Old 08-02-2006, 05:38 AM   #50
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Well, I've got a funny bearing type mild grinding noise appeared in the last 600 miles and it souds like it is coming from the clutch. So, tonight it is getting looked at, try and find out whar the heck it is. I have read that somebody else had the same thing and one of the clutch spring bolts was loose and rubbing on the casing .

The chirp is not clutch related though I don't think, if I slow doem to almost walking pace with the clutch engaged in first gear and then open the throttle, the chirp is there. I believe it is intake squeek.

I will report on the clutch findings after I have dealved further!
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Old 08-02-2006, 07:45 AM   #51
scaryfast
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I haven't heard any chirping coming from my 05 950. I used to get it all the time on my 02 Husaberg 470 and my 04 KTM 450SX. Never could figure out what it was. It would happend as you engage the clutch to start moving forward...it would chirp and kind of jerk the bike until you were completley engaged.....nothing ever happened. May be just a little clutch chirp they develop when the plates slip.
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Old 08-02-2006, 11:01 AM   #52
cpmodem
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It may be the reed valves in the SAS. Mine chirped too, until I removed the reed valves.
-cp
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DISCLAIMER: All observations made in this post are mine and based solely on my own anecdotal experiences, and may contain large doses of facetiousness. YMMV, of course. You are "on your own", and I take no responsibility if someone tries anything in this post and gets into trouble with the law, damages their person or property, or goes blind. Take everything you read or hear "anywhere" butt especially on the Web with a large dose of salt.

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Old 08-03-2006, 05:51 AM   #53
Tobers
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My 04 S chirps too, but the chirp is worse and usually accompanied by a moment's clutch slip and light grinding noise at the point of engagement when cold.

The clutch slip mostly goes away when warm, and the chirp is quieter.
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Old 08-03-2006, 07:13 AM   #54
RAGrote
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We can talk about this until the cows come home - it'll still be the air rushing past the slides in the carbs making this noise.

Proof?

Check the new FI bikes.... no chirpy, chirpy - I'll bet ya...
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Old 08-04-2006, 07:23 AM   #55
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I couldn't agree more - it's definitiely airbox/carb. slide related.

Mine started chirping more after I fitted 'Sommer's Door' - which has slots cut in the access port to the air box to improve breathing.

It now sounds like a 1959 BSA Gold Star accelerating on full throttle ;-)
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Old 08-05-2006, 09:17 AM   #56
Pyndon
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Chirping Clutch?

OK, I have a different opinion, I may be wrong but it's just a thought.

The chirping is indeed the clutch. I took the side covers from the airbox and the chirping stayed exactly the same so I investigated further! I know some you you have already eliminated the clutch (even myself at one point) since it even does it when the clutch is fully engaged in first gear at low revs, but I have an explanation for this too .

The reason I think it is the clutch is because the clutch has little ramps inside it, which have the oposing effect to that of a slipper clutch. These ramps pull the pressure plate onto the clutch plate to engage the clutch hard for the awsome power of the 950. Now, when you set off from standstill these ramps drive hard against each other and pull the pressure plate in. It is these alloy on steel (metal on metal) ramps that you can hear squeeking or chirping! Now you ask, why does it do it when the clutch is fully engaged at extreemely low revs? Well, at these very low revs with no load on the ramps to drive the bike forwards, the clutch is not fully engaged or at least not hard against the plates. Then, as you open the throttle, the ramps are driven hard against each other, moving slightly to pull the presure plate in, chirping as they do.

In my mind, at least for now, I think this is what the chirping noise is!

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Old 08-06-2006, 03:16 AM   #57
Johns-Bikes
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Quote:
Originally Posted by Pyndon
OK, I have a different opinion, I may be wrong but it's just a thought.

Then, as you open the throttle, the ramps are driven hard against each other, moving slightly to pull the presure plate in, chirping as they do.

In my mind, at least for now, I think this is what the chirping noise is!
Thanks Pyndon, I thought clutch but sounds like you got it ! The "fully engaged" comments are logical but with no load things can still move once the taps are opened, maybe even a little slip in wet clutches I thought.

JB
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Old 08-06-2006, 12:04 PM   #58
rightsideup
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Quote:
Originally Posted by Pyndon
In my mind, at least for now, I think this is what the chirping noise is!
I think you're right, the carbslides theory didn't square up with the noise/behaviour I experience. Any action required do you reckon... or just ride it!
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Old 08-06-2006, 02:55 PM   #59
Pyndon
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Quote:
Originally Posted by rightsideup
I think you're right, the carbslides theory didn't square up with the noise/behaviour I experience. Any action required do you reckon... or just ride it!
I took the clutch out to take a gander at it and there is no damage to it, just some tell-tale signs where the ramps are rubbing. Nothing to worry about, it was designed to do it. Ride the wheels off it, I just did 180 miles today. Smiling all the way

I rode for 22 miles down on the dirt about 50yds from am main road doing the same speed at the traffic on the main road, it was awesome. Everybody was looking over, they must have thought I was nuts!!
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Old 08-06-2006, 11:35 PM   #60
950TRANSALP
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Cool2 Dang it !

All this time I thought it was my tire chirping on take off . I realy can't tell with all the other clatter , knocks etc. . I understand the paranoia with all these noises . The thing that bothers me is all the oil oozing at 19,000mi. when my 28,000mi. FZ1 and my 78,000mi. TransAlp were both dry as a bone their whole life . Why did I sell/trade those two great bikes and my '79 924 Porsche for this noisey beast ? Yes it's fun and powerful . But peace of mind is waining . Oops am I ranting again? Sorry! K.B.
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