Rivera Pro Clutch Issue *Update-Resolved*

[Flat Dog]

08 Ultra, 120R motor, MRC EZ Clutch assist, DexIII as per Rivera. Clutch is dragging when in gear at a stop, and also seems to slip a bit. Been adjusted on the dyno by Doc (former scooter school instructor) after slippage (probably normal for a new clutch after back to back hard pulls) both at the nut and cable. Installing tech did not have the basket 'locking' tool, and did his best. Any ideas on what might do this? I see Rivera suggests at times shimming behind the pressure plate with the provided shims, but this is all new to me coming from shovel individual spring clutches.

I ordered the 'special tool' (haha) and am hoping that total dis assembly and (alleged) proper assembly will cure the problem, but thought some of you may have had a similar problem, and might lend some insight into this small problem.

Thanks!

Flat Dog aka John

[prodrag1320]

what fluid are you running? try B&M SLICK SHIFT

[Flat Dog]

DexIII as suggested by Rivera. Thanks Kirby-I'll give that a shot, especially since the fluid probably needs to be changed anyway after the tune and slippage.

[noliners]

Rivera Tech support told me to use Mobil 1 synthetic ATF after some slipping issues.  Works great for me.

[TXChop]

I had to move up to the gold spring for mine not to slip on the dyno. The silver spring wasn't able to handle it..Doc should have seen the slip when tuning if it was slipping...

[Flat Dog]

He did and readjusted the mechanicals, but felt something wasn't right with the install and told me to go back to the tech. He's a true pro.

B&M is in, and off for a test ride now.

[Flat Dog]

Worked great, no more dragging, neutral is easy to find again, and pulls like it should. Thanks Kirby!

[Flat Dog]

Well, after it heated up, it started to creep again. Readjusted as per Rivera instructions-same thing. Time for a primary cover pull and clutch teardown/inspection/reassembly.

[pwmorris]

Are you running just the Proclutch or the Proclutch with AIM?
My Proclutch slipped without the AIM-

[Flat Dog]

No AIM. I think I am going to have to swap out the silver for the gold spring. The silver just will not hold the power no matter what tricks I try.

[noliners]

My Pro Clutch slipped with the silver spring. The gold spring held the TQ, but its way too stiff for the street and traffic. Its strictly for drag Racing. No in between, its either pulled in or fulling locked. In town traffic sucks.. RC Cycles Added the AIM plate and holds the TQ, no slip.  Clutch pull is less than a stock bike.  Try it you wont be sorry, much more streetable.

[Flat Dog]

Thanks-ordered the race spring, and I am running an MRC EZ pull setup so it shouldn't be too bad. Rivera tech said the gold spring will hold the HP/TQ I am making-the silver spring will not. Wish they had that posted on the clutch pak specs.

[Flat Dog]

Well, still no joy. It was doing ok with the new spring for 20 miles, then I jumped on the throttle, and couldn't get it to shift for shiite, nor would it go into neutral with the motor running. Adjusted several times, and have now changed back to ATFIII fluid. Any ideas on this-is that MRC easy clutch just not compatible with the stock basket and this clutch pack setup maybe? Frictions lunched due to a not strong enough spring? Throwout bearing? Demons in the primary?

[Flat Dog]

Adjusted it with the tech every which way we could, and it still stays engaged with plenty of clutch basket travel. Would a toasted throwout bearing do this? I thought usually when that throwout goes bad, it squeals like a pig.

[76shuvlinoff]

It was a 5 inna 4 speed trans but when mine went out (broke in half) the engagement was real jerky and shifting was real hard.

[ibltit]

Are you sure the steel plates are all facing the same direction? I had a set of Barnett plates and discs that I put in the same order as it came packaged and my clutch would drag and it was hard to shift. Took it out and found two of the plates reversed from the others. Put them back in facing the same direction and problem solved. One side of the plates will have sharp edges and one side will have a rounded edges, like they were punched out on a press when they were manufactured. They have to be all faceing the same direction or some will not slide the same as the others.
Mike

[Flat Dog]

Checking that now as well as making sure the plates weren't warped from slipping.

[Flat Dog]

Steels are shot already-bad warpage on the fat plate, slight on all of the others.

[Flat Dog]

Mike at Primo Rivera is going to warranty everything and give me a new specially assembled clutch to hold the power. Two thumbs up for great customer service! 

[76shuvlinoff]

You can't beat that.

[FSG]

with a stick.

[Porkchop]

It's good to hear a company stand by their product.  I don't mean to hijack your thread but Ultima stood behind their product when it left me stranded in the middle of BFE and I'll always throw that out when I get a chance.   

Good Luck

PC

[TXChop]

Flat dog, keep us posted what they give you for a clutch. I would be curious as to what they do. When i called them when mine was slipping on the drum, they thought it was impossible. On mine i found the spline were too loose a fit. BOUGHT, a new one and it was better but not perfect. New metals and frictions and 480 lb spring and TPP and it held on the dyno, but after 5k miles its starting to feel a little less crisp again..I may be switchin mine.

[Flat Dog]

They call it an 'Abuser' clutch. AFAIK, the only difference is that all of the steels are thicker than the standard pro clutch, rather than just one thick plate. The stock silver spring version was slipping hard on the dyno under load.

[TXChop]

Flat, i forgot you got a newer 6 speed bike...Just a thought, but does it slip in all gears? Some guys with big motors and the news trans were having the door/bearing flex problems.

[Flat Dog]

It was just slipping on top end, then it went to not releasing at all due to the steels being warped. I am sure that if I hammer it often, a new JIMs assembly will be in my future. I just hope this abuser clutch with the thicker steels will work ok with the MRC ramp.

[Flat Dog]

New clutch from the great folks at Rivera is on the UPS truck, ready for delivery. Do me a favor and keep your fingers crossed for me...

[HV]

IMHO Id add the AIM TP unit for the Pro Clutch 

[Flat Dog]

New Rivera clutch holds like superglue, shifts like butter. I am a happy and cold scooter tramp. 

A big thanks the Mike at Rivera for all of his help, and great customer service! 

[TXChop]

Great!! Hope it keeps holding strong.  Was there a part # on the box?

[Flat Dog]

Shoot-forgot to look, and the shop tossed the bag. I would imagine that Primo Rivera would be able to give you the info. The steels are a LOT thicker than the standard pro clutch.

[TXChop]

Nah, no problem..I will be in touch with them right after the new year. Thanks!

[strokerjlk]

They call it an 'Abuser' clutch. AFAIK, the only difference is that all of the steels are thicker than the standard pro clutch, rather than just one thick plate. The stock silver spring version was slipping hard on the dyno under load.

Posted by: TXCHOP « on: Wednesday, December 22, 2010. 07:47:22 AM. » 
Nah, no problem..I will be in touch with them right after the new year. Thanks!

hey Dan you get a part number on the Abuser clutch pak?

[WhipLash96]

I was looking at this as well and I am curious about the B&M Slick Shift? Does Kirby mean B&M Trick Shift?

[strokerjlk]

I was looking at this as well and I am curious about the B&M Slick Shift? Does Kirby mean B&M Trick Shift?

Yes I am sure that's what he meant .
It didn't work so good for me with a SE compensator 
Clutch hooked good . Comp got beat up real bad .

[TXChop]

No, i never followed through with that Jim. I just pulled my clutch apart again last night and its still mint. Dont know how, but it made me happy to see. Well, especially since my chain and rear sprocket are f'd. 

[strokerjlk]

No, i never followed through with that Jim. I just pulled my clutch apart again last night and its still mint. Dont know how, but it made me happy to see. Well, especially since my chain and rear sprocket are f'd.

Thanks Dan .