Questions: EVR Slipper & Dry Clutches in General

[Amlethae]

So I've finally got 700+mi on my 1100S (first service this week).  And as this is my first bike with an open dry clutch and an EVR slipper to boot, I've got some questions for anyone who may know:

When I'm riding on the highway or what ev, and going at a semi constant speed (the speed doesn't matter, but the consistency is the key here) I hear the dry clutch rattling occasionally almost like the plates are slipping.  As soon as I apply some power to accelerate it goes quiet and the bike does its thing; same happens when I close the throttle to decelerate, the clutch goes quiet and does its job.  So is this normal or is the EVR slipping too easily?  The clutch certainly doesn't seem to slip under acceleration except occasionally when the clutch is cold and I'm trying to go balls to the wall.

If the EVR *is* slipping too easily does anyone have any knowledge of how to fix that?  I know it has 6 pins on the pressure plate which can be removed one at a time which should start limiting the amount of slippage, but I can't find any write up of what is safe and what is not as far as that is concerned. 

So any thoughts would be greatly appreciated.  Never having had an open dry clutch before, I don't really know what is "normal".  And this issue gets particularly annoying when trying to go 15-20mph in 2nd gear... clutch sounds horrible and seems to be slipping in and out of engagement which makes for a really jerky ride.

[WetDuc]

If you have a 15T front sprocket you are going to be jerkin' and surgin' real good on any monster going 15-20mph in 2nd gear...

[zarn02]

Yeah, 15-20mph in 2nd is probably not the best idea... remember that you have a lot more revs you can pile on, and use them.

As for the clutch rattle, it does that. When it's not under load the plates will rattle around a little bit. Or at least that's how it's been on my M900 and 996. I'm assuming it's the same for the slipper.

[ducpainter]

Yeah, 15-20mph in 2nd is probably not the best idea... remember that you have a lot more revs you can pile on, and use them.

As for the clutch rattle, it does that. When it's not under load the plates will rattle around a little bit. Or at least that's how it's been on my M900 and 996. I'm assuming it's the same for the slipper.

+1

It's the way the clutch works whether it's a slipper or not.

The center hub is splined to the trans shaft and the basket is connected to the crankshaft via the primary gears. Every time the engine fires it drives the basket on the opposite direction from the load on the trans shaft...and it rattles.

[Rameses]

To add to/clarify what Nate said above...

The noise that you're hearing, both when cruising at a constant speed and when traveling at slow speeds, is not the clutch slipping.

It is simply the clutch plates rattling against the basket.

If there's no load on the plates to keep them tight against the basket (either acceleration or deceleration) the plates are free to rattle.  You'll hear the same noise when you're idling in neutral.

Perfectly normal.  No slippage.  No affect on rideability.

[Frustration]

What if the clutch rattle gets exceptionally worse on Acceleration and decel and seems to be VERY grabby?

I just bough used with 4800 miles on and the clutch seems a lot louder and a lot more grabby and touchy from stand still than My hyper 1100 (same motor as the monster).

The bike also shifts with the very slightest touch of the lever and is finding false neutral between in gears 4-5+...

[He Man]

What if the clutch rattle gets exceptionally worse on Acceleration and decel and seems to be VERY grabby?

I just bough used with 4800 miles on and the clutch seems a lot louder and a lot more grabby and touchy from stand still than My hyper 1100 (same motor as the monster).

The bike also shifts with the very slightest touch of the lever and is finding false neutral between in gears 4-5+...

Worn Basket/Plates can do that too. The more miles you rack the wider those gaps get so theres more slapping and it just gets louder and louder and louder. Youd be amazed at how quiet a stock brand new clutch and brand new basket can be when you first swap them  out.

[Frustration]

If the plates were toasted by previous owner, does that automatically mean replacing the basket and hub (inside that 4800 miles)?


I've always had plates last at least 10 unless a lot of track days...

[Howie]

If the plates were toasted by previous owner, does that automatically mean replacing the basket and hub (inside that 4800 miles)?


I've always had plates last at least 10 unless a lot of track days...

You do not need to replace either unless they are worn.