Slipper Clutch?

TrickLidz · #1 (**permalink**) 10-08-2009, 07:27 PM

Anyone using this? Comments?
Clutches and Clutch Parts

drthompson65 · #2 (**permalink**) 10-08-2009, 08:03 PM

I went with the yoyodyne.. it's decent, installed easy and you can always call Frank for help. 2200 miles of hard street riding and one track day without a problem..

Slipper and Lightweight Clutch

jaymags · #3 (**permalink**) 10-08-2009, 09:43 PM

If you track the bike a lot, get it. Besides mag wheels, a slipper clutch was one of the best things I put on my bike(Track 996S, with a bad ass engine from Ducshop). They all work good(Simple concept). I have a STM EVO and have heard good things about EVR.

I do not have one on my street bike (S4RS), but I am also not dumping three gears and going from 150 to 40 MPH on a routine basis...

..I don't think you need one for the street

TrickLidz · #4 (**permalink**) 10-08-2009, 11:09 PM

Thanks.
My R is track only!

**CrimsonCloak** · #5 (**permalink**) 10-09-2009, 02:55 AM

A big yes on slipper clutches...

But did your R came with one? The 749R did anyways...

I like the Yoyodyne unit for the money, or a Hinson for best feel. But the Yoyodne is the most affordable and requires the least attention.

woodmanr · #6 (**permalink**) 10-09-2009, 06:08 AM

I've run a ramp slipper (stock in 748R), an STM ball bearing slipper, and a Ducati Perfomance (Bucci slipper with Ducati Perfomance stamped on it). The STM and DP are ball bearing slippers. I strongly recommend them. Even if you aren't on the track, sometimes just a brain fart happens. I've switched my bikes over to GP shift, and every now and then, i'll shift the wrong way by mistake, and i'm glad i have that slipper. The ramps work fine in a situation like that, they do the job. The BB slippers are just smoother.

For me, it's an nice "put your mind at ease" piece of riding equipment for when do you do that "Oh Crap" moment. That' just my

Ben710 · #7 (**permalink**) 10-09-2009, 08:23 AM

Quote:

Originally Posted by TrickLidz

Anyone using this? Comments?
Clutches and Clutch Parts

I think it´s too expensive. Look at ebay italy, I bought a ball bearing ramp style clutch for 350 Euros + shipping. NIB.

ducati frizione antisaltellamento e su eBay.it

Search for Ducati frizione antisaltellamento.

viper1 · #8 (**permalink**) 10-09-2009, 12:15 PM

Quote:

Originally Posted by Ben710

I think it´s too expensive. Look at ebay italy, I bought a ball bearing ramp style clutch for 350 Euros + shipping. NIB.

ducati frizione antisaltellamento e su eBay.it

Search for Ducati frizione antisaltellamento.

Ben710 - I thought of buying the 4 spring one they sell but wasnt sure if it uses the OEM plates or where I would get parts incase something happens? They are priced decent thats for sure!

**CrimsonCloak** · #9 (**permalink**) 10-09-2009, 03:01 PM

The yoyodyne is a ball and ramp design, parts are a snap to get, and you won't need any because it's a dead simple design.

998R · #10 (**permalink**) 10-09-2009, 03:01 PM

Quote:

Originally Posted by CrimsonCloak

But did your R came with one? The 749R did anyways...

The 996/998R's did not come with a slipper clutch.

I've been using a hybrid 48T Bucci/STM slipper and it has been superb. Coupled with a JHP quick shifter, I can concentrate on other things at the track that (hopefully) will help me go just a bit quicker.

**CrimsonCloak** · #11 (**permalink**) 10-09-2009, 03:46 PM

I keep waiting for quick shifters to get a bit cheaper. I really want one, but dang $450?

Ben710 · #12 (**permalink**) 10-09-2009, 04:44 PM

Quote:

Originally Posted by viper1

Ben710 - I thought of buying the 4 spring one they sell but wasnt sure if it uses the OEM plates or where I would get parts incase something happens? They are priced decent thats for sure!

It uses the stock friction and Steel plates so no need for Special parts. I had a 4 spring corse style slipper. The Spring snapped at oschersleben. Got me a replacement from Guandalini racing which was fine.

Tornado · #13 (**permalink**) 10-09-2009, 05:51 PM

Quote:

Originally Posted by drthompson65

I went with the yoyodyne.. it's decent, installed easy and you can always call Frank for help. 2200 miles of hard street riding and one track day without a problem..

Slipper and Lightweight Clutch

Do you mean Fred?

TrickLidz · #14 (**permalink**) 10-09-2009, 11:38 PM

Thanks all, great replies. Winter project.
Just to confirm: 2003 999R did NOT come with slipper? (I bought my bike used)

TrickLidz · #15 (**permalink**) 10-09-2009, 11:48 PM

Quote:

Originally Posted by Ben710

I think it´s too expensive. Look at ebay italy, I bought a ball bearing ramp style clutch for 350 Euros + shipping. NIB.

ducati frizione antisaltellamento e su eBay.it

Search for Ducati frizione antisaltellamento.

Thanks Ben,
But I don't understand Italian!!! Can you translate? Maybe you already have one and know about it.
US dollars? Shipping cost to US? Brand? You say they us the stock plates? Difference between 4 and 5 spring? Build quality? (if you know)
TIA

'Lidz

drthompson65 · #16 (**permalink**) 10-10-2009, 12:03 AM

I admit I wasn't sold on a slipper for the street and I finally did it.. Wow! Like the thread says.. even if you brain fart and forget you run GP shift it makes all the difference in the world. I won't run without one now.

Ben710 · #17 (**permalink**) 10-11-2009, 04:41 PM

Quote:

Originally Posted by TrickLidz

Thanks all, great replies. Winter project.
Just to confirm: 2003 999R did NOT come with slipper? (I bought my bike used)

No it didn´t. Only the 749R did.

Quote:

Originally Posted by TrickLidz

Thanks Ben,
But I don't understand Italian!!! Can you translate? Maybe you already have one and know about it.
US dollars? Shipping cost to US? Brand? You say they us the stock plates? Difference between 4 and 5 spring? Build quality? (if you know)
TIA

'Lidz

Me neither

US Dollars -> find a conversion website.
Shipping -> ask the seller, he speaks english.
Brand? Dunno? In the end it´s all the same shyte, because it´s the Bucci/Ducati Performance design. Everyone copied it and put a stamp on theirs. The only differences might be materials used and stiffness of springs.
They do use stock plates. I have never seen a 12t clutch which did not use stock plates. Only the 48t clutches are different, obviously.
Difference between 4 and 5 is 1, but since 5 doesn´t exist and you meant 6 it´s 2.

Seriously, it looks different. The 4 spring units should have stiffer springs because they have to create the same force as the 6 spring versions.
Build quality... guess mine´s alright. Not good, not bad, it´s a clutch and it´s gonna wear anyway.

TrickLidz · #18 (**permalink**) 10-12-2009, 06:54 PM

Thanks Ben.
Was a long day....I practice math now!

bella749 · #19 (**permalink**) 10-12-2009, 08:46 PM

The 4-spring corse clutches are the shyte!

I thought my Yoyodyne was good, but I could get it to lock if I got really sloppy. The Corse clutch tho... buttery smooooth. Just went to Carolina Motorsports Park for the first time this weekend. Got a little overzealous while learning the track and the clutch saved my ass on a couple occasions. As far as lovngevity goes... I'll have to wait and see; no problems with my Yoyodyne after 6K+ miles

Ben710 · #20 (**permalink**) 10-12-2009, 09:14 PM

That should all be down to the stiffness of the spider spring. If you slap the spider from your 4 spring corse clutch into your yoyodyne unit, you should see the same effect I think.