Variable Pressure Clutches

[Jim Bronson]

Is anyone using one? How do you like it? I've seen two models, one from AIM and another from HD, and the reviews look good in terms of clutch effort and operation.

[tbird]

I run em stickily for the reduced clutch pull. Mild build so not needed for clutch hook up. Some say slippage maybe occurring at lower rpm's . The jury might be out on that.

[FSG]

been using them for years, wouldn't run a bike without one, bought the first few from Hippo then setup an account with AIM

the Orange SE one that HD sells is actually made for them by AIM, so if your wanting one go direct to AIM and bypass the middleman

often at the various Bike Meets AIM has free fitting of various products so look to what's on in your area and if AIM will be there

[Jim Bronson]

Thanks guys. FSG are you using a stock spring or SE spring? I have a 110 build with about 125 max torque, and I'm using the SE spring that came with the kit.

[mrmike]

Been running one I also got from Frank (Hippo) as well, when you get jammed up in traffic you'll be glad you have it too.


Mike

[Jim Bronson]

I'm trying to figure out which one is best for my setup. I'm using a SE spring, and I don't want to increase the lever pull force any more than it is now. The SE VPC is only offered in one model, but the AIM version is offered in several models. Sounds like a call to AIM is my next move.

[rredneckn2]

I'm running aim vp92T with a SE spring in my 110. Holds well. The aim will actually lighten the lever pull you have now.

[Jim Bronson]

I don't see that one on their site. It looks like a VP028-68IV would work.

[FSG]

Thanks guys. FSG are you using a stock spring or SE spring? I have a 110 build with about 125 max torque, and I'm using the SE spring that came with the kit.

I'll need to check but pretty sure I'm running the 06 Spring in my Fatty

The only difference between the Screamin' Eagle Variable Pressure Clutch

https://www.harley-davidson.com/store/se-variable-pressure-clutch

and the AIM Tamachi VP95

https://aim-tamachi.com/collections/vp-clutch/products/vp95iv?variant=16988586949

is the colour of the weights and the price

AIM provide the VPC to HD, they also provide S&S with a VPC with Blue Weights, also provide a few others, similar to Smith Bros re-branding PRs for whoever wants them.

[Deye76]

According to 1, they don't work. the parrots who concurred at the time, no longer chime in. For 90,000 miles pushing 130 TQ, mine worked flawlessly. Thanks Hippo, RIP

[rredneckn2]

I don't see that one on their site. It looks like a VP028-68IV would work.

I purchased that 92 in 2011 it was rated for a 124. There stuff works and will reduce lever pull!

[rredneckn2]

According to 1, they don't work. the parrots who concurred at the time, no longer chime in. For 90,000 miles pushing 130 TQ, mine worked flawlessly. Thanks Hippo, RIP

They work well. And hold up extremely well have not seen one come apart. Have used at least a dozen over the years.

[Jim Bronson]

Good to know. I see several ebay sellers offering deep discounts on similar products, but they aren't made by AIM. That worries me a little.

[tbird]

I bought both of mine from hippo. When I get a newer bike I always that them out and put in new bike before selling old bike.

[turboprop]

According to 1, they don't work. the parrots who concurred at the time, no longer chime in. For 90,000 miles pushing 130 TQ, mine worked flawlessly. Thanks Hippo, RIP

I think those that said they don't work were focused on slippage at <3k RPMs on the dyno. Heavy bagger, built up engine, <3k rpm, slippage - must be junk. Good grief.

[FSG]

the number in the VPC P/N  eg : 62, 83, 87, 92, 95 ...... 

is the measurement in mm (millimeters) of the diameter of the contact ring of the VPC

[Jim Bronson]

Aha - good to know. Thanks.

[capn]

The AIM vpp that reduces lever effort also reduces clutch travel so may be harder to adjust. I us the SE vpp with carbon fiber plates and SE spring. On my 97 flh with 04 clutch I had to space out the derby cover for clearance.

[FSG]

The AIM vpp that reduces lever effort also reduces clutch travel

please explain 

[capn]

Look at how the AIM reduces effort.Where it presses on the spring compared to stock retainer.

[Coyote]

Pretty sure the AIM can only increase pressure and doesn't effect the throw at all.

[les]

I'm running the H-D VPC in my 124" (148 lbs torque), and using the SE spring.  Works great.

[FSG]

Look at how the AIM reduces effort.Where it presses on the spring compared to stock retainer.

   it reduces effort has absolutely NO affect on clutch travel

[Jim Bronson]

Called AIM today. They recommend the VP 84 IV for my build. They said it would result in 20% easier pull, which is fine with me. I completed the swap today, and the lever effort doesn't seem as bad as it was before I installed the Mueller. Probably just my imagination.

[Coyote]

Called AIM today. They recommend the VP 84 IV for my build. They said it would result in 20% easier pull, which is fine with me. I completed the swap today, and the lever effort doesn't seem as bad as it was before I installed the Mueller. Probably just my imagination.

At idle maybe.