SuzukiSavage.com - Front pulley noise while applying throttle

Dave

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Re: Front pulley noise while applying throttle
Reply #30 - 05/08/17 at 19:34:59

Eegore wrote on 05/08/17 at 15:26:07:

I still wonder however if a greased/lubed/otherwise coated belt would only make noise only after 3rd gear. My assumption is that the belt would make noise in all gears, but I could be wrong on that.

There really should not be any goop, lube, grease on the belt....they are supposed to run dry. Lubing/gooping them up will attract dirt and grit.

With proper alignment the belt does not rub on anything, and does not make noise. The thin part of the belt teeth rest on the flat of the pulley teeth....they don't really make much noise. If the belt is rubbing on the side of a pulley...that makes noise.

If the noise is coming from the back....maybe your pulley hub bearing is going bad.

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batman

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Re: Front pulley noise while applying throttle
Reply #31 - 05/08/17 at 19:51:00

Your worried that the shaft is straight? what makes you think it could ever be bent ,the 29 hp the bike puts out? It's harden steel it doesn't bend! why don't you disassemble things and look!Find out what's wrong and fix it! lubing the belt is like taking an aspirin to cure cancer.Your inexperience with the bike doesn't favor you guessing.It's time to quit talking about the noise and start wrenchin".

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Eegore

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Re: Front pulley noise while applying throttle
Reply #32 - 05/09/17 at 05:30:23

batman wrote on 05/08/17 at 19:51:00:

Your worried that the shaft is straight? what makes you think it could ever be bent ,the 29 hp the bike puts out? It's harden steel it doesn't bend! why don't you disassemble things and look!Find out what's wrong and fix it! lubing the belt is like taking an aspirin to cure cancer.Your inexperience with the bike doesn't favor you guessing.It's time to quit talking about the noise and start wrenchin".

I asked on this forum, in this thread:

"Just a clarification here: On a belt that has excessive tension it would be the rear tire assembly that should fail before the front drive mechanism correct?"

Response:

"I think we've heard just as many issues with the main shaft bearing as the wheel bearings. Neither one usually"

So I figure I would address both issues while I'm working on it. Make sure the front shaft is straight with a rebuild, replace front/rear pulley, replace belt and see if there's noise. If there is put on another tire and see if there's noise then. I plan on having this stuff done, but that doesn't mean I wouldn't still wonder why a belt would only make noise from 3rd gear on up.

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justin_o_guy2 Serious Thumper Offline What happened? Posts: 55279 East Texas, 1/2 dallas/la.	Re: Front pulley noise while applying throttle Reply #33 - 05/09/17 at 05:52:21 Odd as it is that the belt is quiet up to third gear , that doesn't mean that you start by replacing parts in the motor. Ditch the TIRE , and adjust your belt tension, or, ask questions and do what you want.
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Dave YaBB Moderator ModSquad Offline SuzukiSavage.com Rocks! Posts: 18101 Camp Springs, Kentucky Gender:	Re: Front pulley noise while applying throttle Reply #34 - 05/09/17 at 05:53:19 Eegore wrote on 05/09/17 at 05:30:23: I plan on having this stuff done, but that doesn't mean I wouldn't still wonder why a belt would only make noise from 3rd gear on up. Well it must be related to the speed the pulley is rotating.
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Eegore

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Re: Front pulley noise while applying throttle
Reply #35 - 05/09/17 at 06:44:54

Dave wrote on 05/09/17 at 05:53:19:

Eegore wrote on 05/09/17 at 05:30:23:

I plan on having this stuff done, but that doesn't mean I wouldn't still wonder why a belt would only make noise from 3rd gear on up.

Well it must be related to the speed the pulley is rotating.

Makes sense. I will just have to do some research into how friction with a belt like that works. Its basically a squeak....squeak....squeak...that turns into a high pitched wail as I increase speed and it remains once the throttle is released, and returns to being silent as it slows.

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Dave

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Re: Front pulley noise while applying throttle
Reply #36 - 05/09/17 at 07:38:20

As I said earlier.....the belt should not be rubbing on the side of the pulleys. If you have a squeak.....the belt is not in alignment.

The most probable cause of the misalignment is either the rear axle not being adjusted properly - or the overly tight belt is pulling the rear pulley out of alignment. I suspect if you look at your belt you will see that it is not centered in the rear pulley - it is all the way over to the outside....this is a result of the "too tight" belt cocking the rear pulley forward.

Doing the rubber floor mat shims may help - but straightening out the rear pulley will only make your "too tight" belt "more too tighter".
http://suzukisavage.com/cgi-bin/YaBB.pl?num=1446828836

And I am not aware of anyone wearing out a front or back pulley....and belts last a very, very long time if you don't abuse them.

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ohiomoto Serious Thumper Offline SuzukiSavage.com Rocks! Posts: 2776	Re: Front pulley noise while applying throttle Reply #37 - 05/09/17 at 07:48:28 I'm with those who pointed out that the cost of a new rear tire is a lot less than chasing phantom problems.
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wakosama

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Re: Front pulley noise while applying throttle
Reply #38 - 05/09/17 at 07:51:46

Related: Are there instructions or a video of how to REDUCE the tension of the belt? Alot found on 'checking' tension, not reducing it.

Do we just loosen up the axle and carefully advance the two bolts an equal bit? A tape measure from the pivot to verify equal on each side; no canting?

Sounds simple. What am I missing? tks.

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ohiomoto

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Re: Front pulley noise while applying throttle
Reply #39 - 05/09/17 at 07:53:30

Yes, it is that simple. I just make sure both adjuster bolts are seated before tightening the axle nut.

EDIT: I don't bother with the tape measure but ti won't hurt. Most people will tell you not to use the makings on the swingarm, but I think they are fine to get you int the ballpark. I would start with the lines and see how it goes. You can always make further adjustments if needed. My belt made more noise trying to make it perfectly centered on the rear pulley than if I just lined it up equally on the swingarm . YRMV

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Re: Front pulley noise while applying throttle
Reply #40 - 05/09/17 at 08:01:59

The statement you quoted said the wheel bearings, BUT there are three bearings in the rear,two wheel bearings and a third bearing in the pulley housing that has been known to fail,and would cause the rear pulley to misalign .It's time you bought a new tire of the proper size and check all the things we talked about in the above posts.You can talk all day or you can start wrenchin'.

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verslagen1 YaBB Moderator ModSquad Offline Where there's a will, I want to be in it. Posts: 28889 L.A. California Gender:	Re: Front pulley noise while applying throttle Reply #41 - 05/09/17 at 08:16:41 http://suzukisavage.com/cgi-bin/YaBB.pl?num=1335401723
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Re: Front pulley noise while applying throttle
Reply #42 - 05/09/17 at 09:20:32

Quote:

Its basically a squeak....squeak....squeak...that turns into a high pitched wail as I increase speed and it remains once the throttle is released, and returns to being silent as it slows.

Sounds just like my oversize tire expanding radially as speed increased. Did I mention I had the same problem??? Roll Eyes

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Dave YaBB Moderator ModSquad Offline SuzukiSavage.com Rocks! Posts: 18101 Camp Springs, Kentucky Gender:	Re: Front pulley noise while applying throttle Reply #43 - 05/09/17 at 09:24:24 SALB wrote on 05/09/17 at 09:20:32: Sounds just like my oversize tire expanding radially as speed increased. Did I mention I had the same problem??? Wouldn't that be a hoot......if it turned out to be the too big for this bike tire that is the cause of all the trouble!
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Eegore

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Re: Front pulley noise while applying throttle
Reply #44 - 05/09/17 at 09:29:24

Quote:

Sounds just like my oversize tire expanding radially as speed increased. Did I mention I had the same problem??? Roll Eyes

There's no marks on the swingarm from the tire. With the bike jacked up and sitting next to it I can hear the noise coming from the front pulley only.

I'm going to cut off the belt today and see what it sounds like.

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