2011 RS Vector GT First Ride Clunk Question

[mcernik]

So I took my new sled out for a little ride tonight, and I have a question. I would be driving along and let off the gas to stop or come close to stopping and when I would get on the gas again it would make a clunking sound. If I kept a little bit of forward throttle engaged, and not fully let off then it wouldn't make the noise.

I did some searching on the forums and found some posts on the Apex that said the clunking is normal, something to do with the reverse gearing. This is my first sled with reverse, my 07 Phazer didn't have the clunking noise, but also didnt have reverse. I just wanted to check if this is really normal, or if this is something that I should have looked at.

Thanks.

 

[theCATman]

Totally normal.

It's either the drive sprockets on the track (doubtfull because of the anti-ratchet drivers, but still possible), or the secondary/jackshaft/chaincase due to reverse.

Take note next time you have it in the garage, grab the secondary, rotate it forward and back, you'll notice all the play in the drivetrain for the reverse system.

 

[rupprider]

Catman is correct. Sleds with mechanical reverse like Yamaha uses, have that little extra rotational "play" in the driveline, even the older 2-strokes. You can check to make sure your secondary clutch is closing all the way,(belt to the top) when you stop, as the loose belt may cause a clunk/jerk when reengaging.

 

[pro116]

What your describing sounds like the primary disengaging and when you stay on the throttle slightly it can't disengage.

 

[mcernik]

I'll check tonight and make sure the belt is snug.

 

[MadMax]

primary chain out of adjustment will make that same noise... When I start to hear it I know it's time to make an adjustment.... MM.

 

[hossZ28]

When I took my first ride on my nytro er i had a similar noise and my chain didnt have the proper tension I adjusted my chain and eliminated that noise I have thought ihave heard a lot of strange noises since switching to four strokes but your phazer i am guessing Isnt any louder?

 

[mcernik]

Ok so I took the panels off the sled last night. The belt seems reasonably snug, but I was able to move the seconday back and forth by hand i would guess about 10 degrees or so.

 

[Mikedom]

That is normal. I get it also on my '06 GT. Just make sure your tensioner is adjusted right, and all your bearings are good. Especially your clutch side driveshaft bearing if you have more than a few thousand miles on it.

 

[mcernik]

Its brand new, has like 26 miles on it

 

[mcernik]

primary chain out of adjustment will make that same noise... When I start to hear it I know it's time to make an adjustment.... MM.

Where is the primary chain hiding, and how do you go about adjusting it?

 

[theCATman]

Chain adjuster is just below the brake disk.

They tend to be set too tight from the factory, making an awful whine/howl sound from the righthand side of the sled. Loosen the jamnut & tensioner bolt, turn it in finger tight, then loosen 1/4 turn, hold & tighten jamnut.