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Whining noise

Y

yoshie

Joined Dec 2002
39 Posts | 0+
Scotland
Since replacing the centre of the starter sprag after some teeth broke off, there has been a loud whine from the clutch side of the bike. I've had the clutch cover off a few time but cant see anything wrong. Has anybody has anything like this before or any ideas, got it in bits just now and I'm gonna replace the bearings for the starter sprag just in case, but they look OK. This is driving me nuts :evil: :evil:

Any help appreciated
 
OK, no one has had any strange noises from a berg engine :lol: well how about a bit advice on stripping it. I have it all torn down to the motor to little bits and found the balance drive shaft bearings had it. Having decided to replace all the bearings as ther was quite a lot of debris inside, my trouble now is can't get the counter balance of, and it isn't shown in the workshop manual. Checked the parts manual and it shows a circlip between the two bearings but I think this just seperates the two bearings. Does the counter balance just pull of :?:
Come on guys give a newbie a break (and some advice) please
 
Hi Yoshie,
The balance assembly is a slip fit onto the crankshaft. Using suitable means (ie puller or you may use to small pry bars to wedge the balance unit free) pull the balance unit straight off the crankshaft axle.

Hope this helps.
Best Regards,
Dale
 
There is a guy in Phoenix here that is having the same whine noise from the clutch cover area after he replaced his starter gear. He is at a loss as well. He has had the clutch cover off a few times and can not locate the origin of the noise. You are not alone.
 
Cheers guy's got the counter balance weights off OK and have ordered all the parts to rebuild, will post the out come of the rebuild hopefully the dam whine will be gone.

Yosh
 
Hey Yoshie -

I ran into this same problem when gluing my 2002 back together. There is an early and a late release sprag gear and the two do not interchange. The difference is not noticeable to the eye but will result in the whining you described. Triple check to make sure you have the correct part for your bike. If you installed a late (2003 or newer) clutch assembly, you will need the matching sprag.


~ Ken
 
PowerCell
I think you've nailled it :D , just checked the free wheel inner and its for the 01 model, it's got part no HB 250 248 stamped on it. My bikes a 03 model it should be a 250 273. Possibly stripped my engine for nothing, bugger, still replaced the timing chain and bearings and the balance drive shaft bearing was a bit rough.
Will be onto my supplier first thing tomorrow morning and will have a word about his parts supply :x :censored: :x :angry:

Thanks again PowerCell
 
I have just put together a 2001 fe501 and used a new inner for the sprag part #250-273 I believe and 2001 should be 250-248. I also had a hellatious racket coming from the clutch side. I was sure I left all my wrenches inside it was so loud. I removed the sprag and the noise is gone. I will ride without the e start this weekend and try to sort it out next week. Funny thing I liked the new sprag inner- it didn't freewheel when cold and started the bike cold right off. I sure love this thing when it goes and the first 10000 miles were great but it is getting to be a pain in the ***. Time for a new one me thinks.
 
Bob, same problem as me, except the other way round, 2001 parts fitted in a 2003 bike. Hey, perhaps we sould swap freewheel hubs :) or keep the hubs and swap bikes :shock: :shock:

My dealer is now sending me a '04 freewheel inner, hope its OK I would rather have a '03 (250-273) one.

Does anyone know what the difference is with the inner, is it the pitch of the teeth, it's not much, I can't see any difference.

Hope you get it sorted out, it's not the bike fault that dealers sent us the wrong parts :cry:
 
I'm dredging up this old post from long long ago to add my experience.

I have a 2002 550, my sprague was worn so I read the doc (over and over). In the section titled "Amber alert", it advises about the changes in sprague gear designs that cause the infamous whining noise if you don't match the correct parts. The doc states that you have to match all the sprague parts "as a set", so I ordered all the later model parts for >2004 (inner, outer, and the sprague itself)... I did this thinking I would just replace everything and do it as a set to avoid the whining problem. Well, the damn thing sounded like a jet engine and the inner gear broke three teeth off after about 5 hours of use.

So... the doc is a bit misleading in my opinion. What seems to be important here is that the pitch of the teeth on the clutch basket, the inner sprague gear, the crank and the counterbalancer must all be compatible with respect to the pitch of the teeth, otherwise it will whine loudly and potentially break things as happened in my case.

So, I'm a bit unsure now if I can still use my new sprague setup, but simply install an older style inner gear. I would think that the only thing that matters is the dimension of the "drum" that the sprague gear grabs on the inside... the older part would have the correct gear pitch to prevent whining.

Anybody know if the older inner gear will work with the other >2004 sprague parts? I haven't pulled mine out yet to measure.

It did e-start cold/hot, no matter what conditions (for the 5 hours before it broke).

Thanks!
 
It will work made the same mistake by my bike ordered >2004 whole sprague setup and it was whining as hell .
So installed old inner gear and it just rattels-sounds normal done 10 hrs and it is all good.
 
DuaneB said:
So... the doc is a bit misleading in my opinion. What seems to be important here is that the pitch of the teeth on the clutch basket, the inner sprague gear, the crank and the counterbalancer must all be compatible with respect to the pitch of the teeth, otherwise it will whine loudly and potentially break things as happened in my case.
Click to expand...

FWIW between its lines I find the doc emits a whining noise most of the time :D
 
DuaneB said:
So... the doc is a bit misleading in my opinion. What seems to be important here is that the pitch of the teeth on the clutch basket, the inner sprague gear, the crank and the counterbalancer must all be compatible with respect to the pitch of the teeth, otherwise it will whine loudly and potentially break things as happened in my case.

Thanks!
Click to expand...

Hi Duane,

it is in dead unclear about the gear pitches.
Because i have no e-start fitted (only the newer style clutch basket) and mine whines badly..
 
If I remember correctly (not likely as I get older), it has to do with going from a hypoid gear cut to a straight cut or the other way around...sounds like a gear drive on a car.
 
Sorry to go off topic but that is a little bit fancy that "Lifetime" badge you have bikebarnbeckman. How did you get that? 8O
Think that is the first one of those I have seen.
 
a little update on my latest experimenting... I put my old inner gear back in with the newer sprague and outer gear. It sounds like a bag of marbles is inside my engine... makes a terrible racket, and it won't e-start when cold but does e-start ok when hot. I rode it for about 6 hours on the weekend like this and nothing broke, but I haven't taken the sidecover off to see how things look inside either.

So... I'm basically confirming what some others have also found... if you mix the old inner gear (250 248-01) with the newer sprague and outer gear (80040026000, and 80040020000) it will rattle like crazy and the e-start won't work very well when cold, but it did work ok when hot.

I guess I'm doomed to go back to all the older style, and less reliable sprague parts. :cry: unless I try to change my clutch basket, crank and counterbalance gears as well... but that introduces a new problem with the clutch basket bearings that don't quite fit properly.
 
Need some advice here now...

So, I ordered all new parts, inner freewheel gear, sprag, and outer gear.. all matching for the 2001 gear pitch. But, when I received the sprag and outer gear (haven't got the inner yet), my dealer sent me the latest (i.e. 2004) parts... 80040026000, and 80040020000. They must have changed up somewhere, but I ordered using the older style part numbers.

Is it even possible to still buy the 2001/02 sprag assemblies including inner and outer gears?

I'm afraid that installing the new sprag and outer gear along with the older style inner gear will result in the same loud racket that I have now.

Thanks!
 
Hi Duane,

i suppose it is not only the starter system that can cause a 'whine'
I have no e-starter in my FS550, and it is whining like hell (but runs perfectly).
 
I had the same issue, whining from the clutch cover due to old versus new gear tolerances, could not stand it! :angry:

Fortunately the guy who fitted it sold the bikes too, & was reasonable enough to swap for another.

Crispin
 
Crispin said:
I had the same issue, whining from the clutch cover due to old versus new gear tolerances, could not stand it! :angry:

Fortunately the guy who fitted it sold the bikes too, & was reasonable enough to swap for another.

Crispin
Click to expand...

What did you swap?
The clutch basket or the gears on the crank&countershaft?
 

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