That site says "SP" only, so I'm thinkin' RC51

 

i have looked in both manuals and i think it may just work.

wish i had an old rc clutch to be sure.

 

I put in just the HD springs and I think it made a + difference in hook-up. Lever feel changed too but that may have been due to the Galfer SS lines and Belray DOT 5 fluid. The silicone fluid makes the clutch lever respond sluggish but the brakes feel the same to me. I might swap the clutch fluid back soon..

 

Hi guys new to the forum. Im currently looking for a superchicken to purchase. I've been doing research to find someone that's done a slipper clutch mod to the VTR. Has anyone had success in investigating this? I feel like this is one of the biggest negatives to the bike in stock form. Being a big carburated twin, there's no way to calm the thing down on corner entry. If it were EFI you could tweek the fuel map, but on this thing......??? Maybe an accelerator pump on the carbs? Have it on a button and shoot some fuel in?

Being a factory race mechanic, I have some contacts in the industry. Would people be interested in having one made?

Thanks in advance....

 

VTR clutches last for a very long time. I don't think that there are many people on this forum who've replaced a clutch because it has worn out or because the aftermarket offers something significantly better than stock.
I've never had a bike with a slipper clutch so I don't know what I'm missing. I like the abundant engine braking that's available. It's an asset for street riding. If I were on the track and was doing a lot of heavy braking coupled with multiple downshifts, I'd feel differently.

 

I you lighten the flywheel it also reduces engine braking a small amount, besides that it lets the engine build revs quicker... That coupled with a bit heavier clutch springs and I'm all set...

BTW if you are going into corners hot enough to need a slipper clutch, and you are saying that's the biggest negative, how in the world have you stayed alive thus far? Before you even get to the point where a slipper clutch has any use, the under sprung front fork will have put you in a ditch, and if that doesn't kill you, the brakes will... Trust me, there is a lot to do before you have need of a slipper clutch... now that's not to say the hawk is a bad bike... It certainly is not... But a slipper clutch isn't high on the list...

 

Got it.

So I'm guessing that the answer is no. No one has modded the clutch.

"BTW if you are going into corners hot enough to need a slipper clutch, and you are saying that's the biggest negative, how in the world have you stayed alive thus far? Before you even get to the point where a slipper clutch has any use, the under sprung front fork will have put you in a ditch, and if that doesn't kill you, the brakes will... Trust me, there is a lot to do before you have need of a slipper clutch... now that's not to say the hawk is a bad bike... It certainly is not... But a slipper clutch isn't high on the list... "

There really isn't a negative to back torque limiting clutches. That's why pretty much all modern sportbikes come stock with one now. If you haven't ridden a bike with one I suppose it's hard to get your head around. You really don't need to charge corners in order to appreciate the technology. Bikes behave much better once you take the back torque out of the equation. It makes for a SAFER motorcycle. As for the suspension, that's seems to be a fairly ez fix. As are the brakes. That's why those aren't high on MY list. The clutch however, as I stated before seems to be the biggest challenge.

ride well

Jun

 

Well, OK... That depends on how you categorize said list...

Yes, fixing the suspension and brakes are fairly easy to do... Yes, a slipper clutch improves on the all round behavior of the bike a lot... I have ridden several bikes with one (also bikes with one added as aftermarket, so I can tell the difference), so I know what they do, But if you do one without the other, I'd choose the suspension & brakes...

As said for me, the lighter flywheel did improve things on decelleration as well as acceleration... So for now I'm happy...

I agree, the clutch is a bigger challenge... AFAIK nobody has tried that yet... If you do I'll be watching intently, but it will probably be too expensive for me to do for a long time...

Some information though, to correct some things in the above very much older posts... Could help you, could be superfluous... The RC51 and VTR1000F share virtually no parts, including clutch parts, so don't count on using parts from there... It's going to have to be a scratch built part, most likely...

 

That's really what I was afraid of.... I'vebeen trying to cross reference part numbers to see if the output shaft is shared with another model. If the spline pattern matches up with another more sporty model there's a chance of something.

I'm also thinking there may be the possibility of modding the stocker. In the old AMA FX class they wouldn't allow us to run an aftermarket clutch like the STM, so we divised a judder spring mod that would help the clutch on decel. Might be worth a look on the VTR. Once I get my hands on one anyway....