Roketa clutch slipping (FIXED)

[msRandi]

It's cool to see the old ways still work.

[fatboy250]

Bruce,
Any word yet on the xr200 clutch comparison?

Jason

[fatboy250]

FMY and other Roketa owners,
I just wanted to add that I took mine apart yesterday with Dad and replaced the springs with some that I had from an old 1986 Honda VF500F interceptor. The main reason is that the stock spring measure about 1.350" long and the VF500F spring measured 1.412" long. I believe the clutch had been replaced with a Barnett when I got it. These springs also cross reference the 81-82 XR250R from what I can gather as well as several others. You can cross reference using the Barnett parts number 501-56-04015 in on this webpage http://www.newcombdistributors.com/c...20Clutches.pdf You'll have to use the find function. I haven't been able to ride it yet but hope to do so this evening. The washers should work for those that want to go that route, otherwise the upgrade springs can be had for around $8 plus shipping from JC Whitney. I will post more later on the outcome.

http://www.jcwhitney.com/autoparts/S...&searchbtn.y=7

[red2003]

That's a great find Fatboy . After you verify it is working, this should definately be added to the cross reference section.

[FMYStreetRacer]

hell yeah good job. how can you mod the bike and not test it out? first thing i did after putting the washers in was beat the piss outta it.

[fatboy250]

Confirmed it works like it should have from the factory. Clutch feel is great and it grabs quickly and doesn't slip between gears like it would before. If you look at the difference in length of the springs you'll see that it would be similar to adding one .065" washer which is about a standard width. So, if you wanted to go that route and save a few dollars it should give the same end result. BTW, FMY used two washers so I would assume his really has a lock on the clutch. Again, check the Barnett springs versus the others found in JC Whitney. They should be the same.

Jason

[red2003]

That's great news Fatboy. I would think the JC Whitney springs would be a better bet as they are longer AND heavy duty which should mean a higher spring pressure to hold the clutch better. The washer MOD will put more preload on the clutches but not more pressure which is the real issue here. When do you Roketa guys start seeing the clutch slipping? Mine has not missed a beat, even riding 2 up, but I only have a couple hundred miles on so far. I guess I better get a set coming as it sounds like most of the Roketas DO bother. $15.00 for springs is a lot better them smoking the clutch from slippage. Good work guys!!!

BTW, here's a diagram of an '83 XR200 clutch which the springs you list fit. Do the rest of the parts look interchangable???

[ejcycles]

It's not the length of the springs that is the problem with the Roketa's. It's that the springs are just cheaply made and the spring tension is deteriorating from the heat of the engine. The XR200 springs should be Ok.
Note: Clutch springs are one of the most important parts in the clutch, if you buy cheap springs then you still have cheap springs. When I sell someone an EBC clutch parts I still sell them Barnett Springs.
I hope that this helps.

Bruce

[fatboy250]

Yes Red, that looks exactly like what I saw behind the clutch cover. If JC Whitney has a slightly longer "Heavy Duty" spring for the same application, then I would definitely go with that. I couldn't imagine it being too much more heavy duty than the Barnett springs though.

For that matter, the disks I had with the old basket from the VF500 interceptor looked to be interchangable. That's without taking the clutch off the bike and actually putting them in.

The engine temp vs. clutch slip has been kind of opposite for me. When it was cold it would slip. Once it warmer up it worked fairly well and at time wouldn't slip at all. I've got the 20W-50 in it now for the summer months to see how it does.

Jason

[BW]

Clutch was slipping when cold in 3rd and 4th with 17 / 36 (great on the highway). Ordered the springs from Whitneys. Here are photos....





I could squeeze the factoy springs about 1/8 of an inch with one hand, not the new ones.
Slips no more, but OMG 4 to 5 times as hard to pull on the clutch lever.
If they don't get easier I may go to 1/2 and 1/2 in the future.
About 15.00 with shipping.

[wakebball11]

have you ever tried replacing the plates as well, if so how did you manage that?? the clutch seems to be blocked by the centrifugal filter,

[Weldangrind]

That is a five year old thread that has been awakened, so I doubt that any of the original posters are going to respond.

Removing the centrifugal filter is cake, because it has the same nut as the clutch basket. The same tool will remove both nuts. The tricky part is the phillips screws that hold the centrifugal filter cover. When I do my next XR-style clutch, I'm gonna use allen head screws instead.