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Buell Motorcycle Forum » Buell RACING & More » Racing - Circuit/Road Racing » Archive through October 13, 2009 » Slipper clutch XB installation (any interest?) « Previous Next »

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Archive through August 30, 2009Slaughter30 08-30-09  06:41 pm
         

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Rsh
Posted on Sunday, August 30, 2009 - 07:43 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

It looks like in the fifth pic down, one of the slipper mechanism ball bearings popped out of place.
I am sure you saw it, just the same, better safe than sorry.
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Rocketsprink
Posted on Sunday, August 30, 2009 - 07:47 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

thanks for the write up. please keep us posted as to the value and easy/difficulty of use.
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Slaughter
Posted on Sunday, August 30, 2009 - 07:54 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Yep indeed - there WAS a ball that slipped. How about that for my powers of observation??? I even took the pic that SHOWED the ball and was hurrying up to try to get it together and tested...

DUMB. Didn't have time to do it RIGHT - but I had time do do it over!!

I started stacking the clutch plates and then noticed the stack was "rocking" - and dang if it wasn't because I hadn't noticed the ball had slipped.

I would DEFINITELY use more grease to hold the balls on the ramps next time!!!

(Message edited by slaughter on August 30, 2009)
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Buellrcr
Posted on Monday, August 31, 2009 - 09:30 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

lay the bike on its side, or remove the whole clutch basket and chain and sprocket as one, lay it on the work bench to ya get it altogether. then slide it altogether at one time and use your thumb to keep pressure on the plate stack
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Slaughter
Posted on Monday, August 31, 2009 - 01:02 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Laying it on it's side would make it SIMPLE.

That way the balls aren't trying to fall out.

It's a learning experience, that is for sure.

Few weeks before I get to try the beastie.
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Slaughter
Posted on Tuesday, September 01, 2009 - 01:42 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Finally got a JPG of the instructions:


Slipper Assembly
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Slaughter
Posted on Tuesday, September 01, 2009 - 01:49 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Finally got a JPG of the instructions (no copyright marking):



(Message edited by slaughter on September 01, 2009)
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Slaughter
Posted on Monday, September 21, 2009 - 09:20 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Well, still trying to absorb it all.

TONS of changes this weekend. Pirelli delivery came late so had to change from a 180/55 to a 190 PLUS a harder compound (SC3 on both front/rear) so I started messing with ride height in the rear and lowering the tire pressures to try to get similar traction.

RIGHT FROM THE START - I liked the effect of the slipper. Keep in mind, Willow Springs is not a shifting and braking intensive track. In fact, there are really only two places with hard braking and down shifting - and even for those, it's just one gear down.

The one thing IMMEDIATELY noticeable is how STABLE the bike is going into turns. It's not so much that the "slipping" is noticeable but the ABSENCE of the rear end instability is REALLY noticeable. I found that I could turn in more aggressively into T1 (after the front straight) and while this is normally a 5th to 4th turn, I could delay the turn-in much longer since the bike didn't feel as "squirrely" after the down shift.

In turn 3 (next downshift) - it's more aggressive braking but STILL a real advantage to have a slipper working as the rear wheel is really light. I am still working on later-braking for T3 so this has more untapped potential.

T5 is an off-camber, downhill left. This is where the functional slipper REALLY was felt. In practice, I normally just head downhill in 3rd and don't downshift but in racing, I might momentarily shift up to 4th and back down - and this gets SCARY with the off-camber turn coming up. Helped LOTS.

Turn 6 to 7 to 8 is WFO - enter 8 at about 120mph and turn-in and downshift for 9 just before hitting rev limit.

Last would be T9. This is just after the fastest spot on the track for low-powered (non-litre) bikes. In this case, NOBODY brakes but you downshift from nearly redline and turn in. BITCHEN!

I figure that with the increased confidence from FINALLY getting the seat time and spending the day Saturday getting the feel of the slipper - Sunday (race day) - I was able to shave 4 seconds off my lap times and I can attribute almost a second of that JUST to the slipper. Eventually MORE time will drop when I get more used to properly using it.

I want to have the Pirelli dude look at the wear on the tires before deciding that the 190 might actually work better for me than the 180... too many changes.

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Rocketsprink
Posted on Monday, September 21, 2009 - 09:24 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

thanks for the info Steve.
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Bud
Posted on Sunday, October 04, 2009 - 01:09 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

hi Steve,

nice write up.

i think they have already told you to check the gearoil after every race
especialy with the light springs

we needed to change the oil every race on our XBRR because it gets really hot,

and have a spare set off clutch plates stading by

gr, bud
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Slaughter
Posted on Sunday, October 04, 2009 - 01:16 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

I certainly do change the fluids each race and will check wear on the plates.

I do have a second set of clutch plates and I thought I might want stiffer springs but I don't think I need to change.

Looking forward to next races in 2 weeks.
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