s2r 800 Clutch

[XJBaylor]

On my (new to me) s2r the clutch only disengages within the last, maybe, 10% of its travel. Maybe once I install my 14t sprocket I won't even care, but is there a way to make it slightly more progressive? It just feels like it is light switch quick and is not easy to modulate.

Thanks,

[teddy037.2]

aftermarket slaves will help increase the friction zone... a lil'bit...

I've got the Evo slave, and swapped out the coffins for the brembo goldlines

[stopintime]

That's what I thought too, but I can feel a very subtle engagement from about 60% of the full travel, although nothing really
happens until the last 10%.
It was difficult to get used to and still is less than smooth in city traffic, but I like it a lot when riding harder and being able to shift quickly with very short clutch pulls. I hope the adjustable CRG levers I have on order will provide a firmer grip to make the clutch easier to control. 

[clubhousemotorsports]

I would guess that you have the APC slipper clutch, does the lever pull VERY easily?If so that is the slipper and what you are feeling is the inital preload of the springs being overcome.

[stopintime]

I would guess that you have the APC slipper clutch, does the lever pull VERY easily?If so that is the slipper and what you are feeling is the inital preload of the springs being overcome.

  Explain again, please....

(I have that "slipper" clutch, not a proper slipper though. Not "VERY" easy to pull, IMO)

[teddy037.2]

apparently, '04 was when the APTC clutch was introduced (wet bike). and, apparently, depending on who you talk to, will consider (or not) this to be a 'slipper' clutch.

I have an 05 620, and like I said, the clutch pull was easy, but seemed kind of 'light switch'y.... changing to the goldline and evo slave seemed to have increased the overall lever feel, if rather subtley

[Slide Panda]

Explain again, please....

(I have that "slipper" clutch, not a proper slipper though. Not "VERY" easy to pull, IMO)

You bike and the thread starters bike both have the Adler Power Torque Clutch (ATPC) which acts as a 'semi' slipper.  It's not a true slipper clutch in the classic sense, but it does basically the same thing.  If you downshift and just dump the clutch without bringing up the engine RPMs the ATP clutch will smooth things out until the wheel speed and engine RPMs match up.  If you did that same thing on a non slipper bike, you'd probably lock/skip the rear wheel.

The ATPC set up seems to always have the engagement point near the end of the levers travel, and with a small feeling friction zone.  I rode an 05 620 for a year and in some slow/heay traffic.  Once you get used to it, it's not hard at all to modulate that clutch.  It just takes some practice and a finer touch.

And, stopintime unless something wrong with your clutch it's a really light pull by comparision.  If you've got a buddy with a dry clutch bike - go give that a squeeze.  I had no problem pulling the clutch on my 620 w/ 1 finger for most things.  On my 900 1 finger would never cut it.

[stopintime]

That's interesting - three or four fingers for me (and I have a strong grip) - also it seems not to slip "at all" when I tested it from 4th to 2nd at about 50-60mph dumping the clutch. I guess another thing for my dealer to check out Thank Yuu

[duccarlos]

I'm installing my CRG levers tomorrow. I'll let you know how it changes

[Slide Panda]

That's interesting - three or four fingers for me (and I have a strong grip) - also it seems not to slip "at all" when I tested it from 4th to 2nd at about 50-60mph dumping the clutch. I guess another thing for my dealer to check out Thank Yuu

It's not a true slipper and even slipper have their limits so 4th to 2nd might be a bit beyond scope.  But on my 900 if I went from 4th to 2nd w/o any increase in throttle ans slipping in the clutch, she'd be very very unhappy.  In fact I did that once and hopped the rear end coming into a turn and gave myself a case of ass pucker.

But you needing 3-4 fingers on a wet clutch Duc ain't right.  I haven't messed with a ton.. but the 3-4 ATPC 620s an the S2R800 I've ridden, moved or just messed with all felt them same - that being really light on that lever.  So light I could just snap it with my figers to change gears.  The 900, its a pull.

[XJBaylor]

I do have the APTC, and the clutch is the lightest I have used on any bike I have ever ridden. I was just making sure that nothing was wrong, as it almost feels like the clutch slips a bit as I roll off from a light. I will install the 14t and reevaluate.

Thanks as always guys.

[CairnsDuc]

My 07 S2R 800 is a little heavier then I was used to (10 years riding 250cc bikes) but I stalled a couple of times due to the tiny take up point, I also changed the front sprocket to a 14 tooth, that made life easier as you don't have to slip the clutch as long to get up to speed before releasing the clutch fully.

I'm used to it know, 2 fingers to control the clutch, but I will be changing the slave cylinder at some stage, The clutch pull is still a little heavy for my liking (Doesn't help I have small girlish hands  )