Hissling noise when leaned in turns

[Corsara]

Typing this on my phone as I am on the road.. I am a new rider, so not much experience, my problem might be trivial.

I noticed that when I am leaning the bike in turns, I get some kind of hissling noise (something like "ts-ts-ts..."). Do you have any idea what this could be? It doesn't seem to appear at low speed, only at 20+ mhr.

I had the front tire replaced about 300 miles ago if that would help. Initially I thought it might be the sticking rubber things from the tire, but then I saw that these things stick more in the middle than on the side, so if they were to make noise, it should have been happening at straight line riding more than when leaning the bike.

Could it be the chain? I had it loosened up a little few days ago at the dealership.


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[DownrangeFuture]

Sure it's not your airbox? It makes a nice sucking noise when you're leaned over and hanging off the bike.

 

[Corsara]

Sure it's not your airbox? It makes a nice sucking noise when you're leaned over and hanging off the bike.

No, it's not it. Noise is not nice at all, and also it appears even if I slightly lean it, no hanging off of it or anything.. On a side note, after I got home and the tires cooled off, I measured the air pressure---it was a bit low. Also, the sticking rubber things seem to be almost at the middle, but not quite---the very middle doesn't have any, so now I'm starting again to think if it's not just tire noise. Being new to the sport, it's hard to diagnose

 

[REO Scorpio]

Mine does this as well. To me, sounds like the timing chain when I'm leaning on right handers, but it sounds exactly like you describe when leaning on both sides

Scorp


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[Humperdinkel]

You sure its not just your brakes ?? They can make that sound as the rotors go around caused by the friction of the pads :thumbup:

 

[Corsara]

You sure its not just your brakes ?? They can make that sound as the rotors go around caused by the friction of the pads :thumbup:

Hmm...you got me thinking here. If that was the case, wouldn't the sound be there even at straight line?

When the bike is on the center stand and I spin the wheels (either front or rear) by hand, I can definitely hear the friction of the pads on the rotors (the tires don't spin freely). I always thought this is normal, isn't it?

 

[DownrangeFuture]

They need to make a certain number of revolutions when spun. If it's just barely dragging then it's probably not worth the effort. What I mean by barely, is you can hear it, but the wheel seems to spin freely.

Otherwise the pistons need rebuilt or there's something wrong with the master cylinder.

 

[RJ2112]

Typing this on my phone as I am on the road.. I am a new rider, so not much experience, my problem might be trivial.

I noticed that when I am leaning the bike in turns, I get some kind of hissling noise (something like "ts-ts-ts..."). Do you have any idea what this could be? It doesn't seem to appear at low speed, only at 20+ mhr.

I had the front tire replaced about 300 miles ago if that would help. Initially I thought it might be the sticking rubber things from the tire, but then I saw that these things stick more in the middle than on the side, so if they were to make noise, it should have been happening at straight line riding more than when leaning the bike.

Could it be the chain? I had it loosened up a little few days ago at the dealership.Sent from my T-Mobile G2 using Tapatalk

How many miles are on the bike? I assume you are owner #2 or possibly #3 for that bike, right?


What modifications have been done to it?

Do you know if the chain and sprockets have been replaced?

Do you have any sort of service history on the bike?

 

[Andz]

I used to get that sound leaned over in the corners until I tried a different type of knee slider, they don't chatter on the tar anymore!

 

[TownsendsFJR1300]

Hmm...you got me thinking here. If that was the case, wouldn't the sound be there even at straight line?

When the bike is on the center stand and I spin the wheels (either front or rear) by hand, I can definitely hear the friction of the pads on the rotors (the tires don't spin freely). I always thought this is normal, isn't it?

You should be able to get at least one revolution from each wheel with a good hard spin. You can also go for a ride, stop with JUST THE REAR BRAKE and feel the front rotors. They should be cool to the touch. If thier hot, there's too much drag. Do the same to check the rear.

The Yamaha shop manual calls for seal replacement every 2 years, hose replacement every 4 years.

My fronts started dragging on mine (and the FJR same brake caliber) with about 5k miles on the clock. I took them apart, cleaned and re-assembled with:

[ame=http://www.amazon.com/Permatex-24110-Caliper-Brush-Top-Bottle/dp/B000HBNV6W]Amazon.com: Permatex 24110 Ultra Disc Brake Caliper Lube, 8 oz Brush-Top Bottle: Automotive[/ame]

It helps with re-assembly and seems to keep the pistons from sticking with the seals.

You can also spray brake cleaner in and about the 4 pistons to remove any gunk/crap. The pads pull out easily with the one pin for easier access.. Once those are visably clean, you can pump the pistons out a little farther with the lever and spray more cleaner before pushing back into the calibers. Repeat with all pistons.

I'd change out the brake fluid as well (if its never been done).

BTW, on the FJR, I did replace the seals, the old ones looked fine, didn't leak, but had more time on them. When they started dragging you could feel them drag just moving the bike in the garage manually (got maybe 1/4 turn free spin). Their now spin about 1.5 turns (free spin)..

 

[Corsara]

How many miles are on the bike? I assume you are owner #2 or possibly #3 for that bike, right?


What modifications have been done to it?

Do you know if the chain and sprockets have been replaced?

Do you have any sort of service history on the bike?

I think the bike changed hands a few times before coming to me. However, after I bought it I took it to the shop (to change tire, safety inspection, etc.), they said I got myself a bike in really good condition. It has 12k miles (20k kilometers) on it.

No modifications (other than a FE I installed myself, Mezzo levers and Puig windscreen).

No service history Don't know if and what was ever replaced...

 

[Corsara]

I used to get that sound leaned over in the corners until I tried a different type of knee slider, they don't chatter on the tar anymore!

I am absolutely positive that's not my problem, hahaah

 

[Corsara]

You should be able to get at least one revolution from each wheel with a good hard spin.

I do get a full revolution and more if I spin them hard, so I guess brakes is not my problem..

 

[RJ2112]

I think the bike changed hands a few times before coming to me. However, after I bought it I took it to the shop (to change tire, safety inspection, etc.), they said I got myself a bike in really good condition. It has 12k miles (20k kilometers) on it.

No modifications (other than a FE I installed myself, Mezzo levers and Puig windscreen).

No service history Don't know if and what was ever replaced...

I would have suspected something in the running gear, for a noise... maybe the chain running at an angle on the sprockets. It's possible the rear wheel is slightly mis-aligned on the swingarm as an example. If you hear the noise only when the bike is not vertical, there is also a slight difference in the loads on the bearings, if they are not snugged up properly in the wheels. Brakes have already been covered by other posters.

Being new to motorcycles, you may also simply be hyper sensitive to normal noises that machines make. Without an engine compartment, and a passenger compartment, you will hear a LOT more mechanical noises from any bike compared to almost any car.

Just food for thought....

 

[iSteve]

If you're comfortable with the bike try going through a corner with the clutch pulled in and throttle off. This will let you hear all the rotating parts (less engine) and maybe narrow it down.

Also this is going to sound stupid but it could be helmet noise. A lot of helmets will be quiet when facing straight but if you turn your head just right air will leak through somewhere making unexpected noises.

And just wanted to add engines and drive trains make noise FZ6 seems to resonate sounds more then some bikes. But don't get caught up in worrying about every noise you hear. Otherwise the ticking noises will drive you insane.

 

[oaks]

I do get a full revolution and more if I spin them hard, so I guess brakes is not my problem..

We interrupt this thread to bring you this classic fz6-forum flashback:

[ame=http://www.youtube.com/watch?v=1Pm_WgtVviU]Spinning the tire[/ame]
​

And now back to your thread, already in progress.


(With thanks to jblk9695 and his furry friend. http://www.600riders.com/forum/garage-mechanical-help/36814-question-regarding-wheel-rotating-3.html )

:BLAA:

 

[FinalImpact]

Also this is going to sound stupid but it could be helmet noise.

I thought the same thing. . .

Otherwise the ticking noises will drive you insane.

Again, same thing with a lean and slight tilt you hear more. Not just from your helmet but the bikes angle to ground can reflect noise from the ground making engine / brake noise more audible to the ear. Ever try ear plugs??

Also, this would be rare but as you lean the bike in the corner there is a chance the wheel bearings are allowing the wheel(s) and rotors to shift position ever so slightly making the pads drag on the rotors in the corners.

Can you check both ends for side to side movement? The problem is you may not be able to load it enough by hand to see or feel movement. This could require the use of dial indicator to see it move.

 

[Corsara]

Hey everyone, long story short: rear wheel was very much misaligned with the front (string on both sides was 2 cm from the front rim on left side, 5 cm on the right side). I aligned it tonight, and if I get good weather tomorrow after work, I'll get her out to see if the noises are still there.

 

[Andz]

Hey everyone, long story short: rear wheel was very much misaligned with the front (string on both sides was 2 cm from the front rim on left side, 5 cm on the right side). I aligned it tonight, and if I get good weather tomorrow after work, I'll get her out to see if the noises are still there.

I wouldn't say that is the most accurate way of checking wheel alignment.

Try using a piece of stiff wire or a measuring tape, get the chain tension correct on the left side and measure the length of adjuster bolt protruding from the rear of the swingarm, match this on the right side.

 

[Corsara]

I wouldn't say that is the most accurate way of checking wheel alignment.

Try using a piece of stiff wire or a measuring tape, get the chain tension correct on the left side and measure the length of adjuster bolt protruding from the rear of the swingarm, match this on the right side.

But what if adjuster bolts are of different sizes?