2009 M8/M10 Clunk

[xray]

I have a new M8, I have not had it out yet. I have herd through the grape vine that there is a clunk either on de cel or after de cel when accelerating. Appearently something to do with the electronic reverse and the way the notch is cut in the helix. Has anyone noticed this?

 

[SLEDIOT]

09 m10-I heard it too, but right when I hammer on it. Probably get a recall on it.......

 

[xray]

Is it the way way the helix is cut for the electronic reverse, or is it caused by something else?

 

[IDspud]

It's your lunchbox hitting the back of the trunk

 

[catunder]

Most likely the helix due to the reverse. Have heard that sound for years when I used to ride Poos with reverse. Haven't had a chance to ride my new M8 Camo SnoPro yet but I expect to hear the clunk you are talking about.

 

[mmsports]

Clutch noise

Its possible that the roller are not seated on the ramp when you gas it should not be an issue.

Or like ID spud said It's your lunchbox hitting the back of the trunk

 

[stone-cold]

Any and all sleds with R.E.R will make that noise, It is the helix sliding into the reverse notch. There will be no recall or way to fix it, that is the nature of the beast.

 

[mrduramax]

2009 m8 sno pro same here , good to no it is not just mine
that sound is very loud (clunk)

 

[tyler12]

my 08 m8 makes a awful clunk when coming out of reverse. make sure the rpms are at idle before going into or coming out of reverse. the higher the rpms when pressing the reverse button the worse the clunk, my dealer said if the rpms are high when enguaging reverse it can do damage to the gears

 

[mrduramax]

The noise from the 2009 is from the clutch (helix) not the DDrive

 

[northof40]

Any and all sleds with R.E.R will make that noise, It is the helix sliding into the reverse notch. There will be no recall or way to fix it, that is the nature of the beast.

I beg to differ. My 07 doo didn't make a noise, nor do my riding buddys dragons or xp's. Haven't had a chance to try my m8 though.

 

[Soccerd6]

good to know it's not just me!

make sure the rpms are at idle before going into or coming out of reverse. the higher the rpms when pressing the reverse button the worse the clunk, my dealer said if the rpms are high when enguaging reverse it can do damage to the gears

isn't this a no-brainer?

 

[RockyMtn.Kris]

My 03 Escape would do it too

 

[backcountryislife]

On the 09, look at the helix, I don't know how it could NOT make a noise unless you're very gentle with the throttle as it goes from the ramp side to the notch side. Not too fond of this new helix, but I don't see how you avoid it.

On the 07-08, Mine did that too, just gotta keep the R's down. There should be a limiter that keeps It from switching above 2500rpm I believe it was?

 

[alexhack]

This may be a dumb question. Could you put a standard helix in? Then you wouldn't have that gap between the rollers and the notched side of the helix. I dont see the secondary opening up that easily due to everything is spinning in the opposite direction as the helix ramp. But as I say this might be a dumb idea from a newbie to the sled world. Thanks for the heads up about the clunk though.

 

[05snopro440]

This may be a dumb question. Could you put a standard helix in? Then you wouldn't have that gap between the rollers and the notched side of the helix. I dont see the secondary opening up that easily due to everything is spinning in the opposite direction as the helix ramp. But as I say this might be a dumb idea from a newbie to the sled world. Thanks for the heads up about the clunk though.

Sure you could, your reverse wouldn't work right or at all though.

 

[05snopro440]

isn't this a no-brainer?

I would think so, isn't it obvious that you should be idling before you switch into reverse on any system?

 

[northof40]

I have a new M8, I have not had it out yet. I have herd through the grape vine that there is a clunk either on de cel or after de cel when accelerating. Appearently something to do with the electronic reverse and the way the notch is cut in the helix. Has anyone noticed this?

Maybe I am reading this wrong..... But wasnt the question if anyone had a clunk while accelerating or decelerating? Not when engaging/disengaging reverse? And yeah if your motor is running above 3000 rpm the reverse will NOT engage even if you do push the button

 

[Evil Revo]

Mine clunks too!
But I don't believe its the secondary. I took mine off and turned the shaft the secondary rides on. It has a good amount of play. It clunks when you twist it back and forth.
So I believe the clunk is from the diamond drive itself.

 

[summ8rmk]

The "clunk" my 09 M8 makes when hitting the brakes then accelerating is the same noise I've heard from all my SKI-DOO's from 2003-2006 and the 2004 polaris it's the secondary clutch helix for the electronic engine reverse!