Evr dry clutch

[Max]

I’m wondering if anyone has fitted an evr dry clutch on their v4 and changed the cases to the ones normally used on the stm. Want to see if going with an evr will keep the look the stm dry clutch has as it is much cheaper. Thank you in advance

 

[BMW Alpina]

I’m wondering if anyone has fitted an evr dry clutch on their v4 and changed the cases to the ones normally used on the stm. Want to see if going with an evr will keep the look the stm dry clutch has as it is much cheaper. Thank you in advance

Hi Max,
How do you know they will be compatible with each other? Even if they are, if there is a few millimeter (or even sub-millimeter differences), it could affect the clutch engagement...
I think @Araitim who had been doing some custom modification on his clutch will be able to explain better in this topic.

 

[Max]

I meant just the cover for example using the Ducati performance carbon fiber or the spider cover

 

[Max]

like how HKMP7 had different clutch covers but wanted to see with the evr if it still looked good. i cant find any pics and i wanted to see if i could save a little

 

[Araitim]

You had asked which clutch someone felt stood out more than another on another forum. Ill answer it here.

In my opinion EVR are the superior.

Here is why.
Ducabike are no different than any other 'ball on ramp' design. There are 2 traditional ball on ramp designs, one that uses a spider spring to adjust slipper pressure and one that uses coil springs and spacers(the later is easier to tune). STM and EVR are unique to the way they operate. The STM looks fancy but is over complicated for what it does. Uses a ball on ramp hub design (no different than the ducabike)but uses spider springs for all it's clamping n slipper forces including the drive pressure plate. Ducabike and all 'coppies' as well as STM, the ball on ramp are under the bottom pressure plate. When reverse pressures are applied for the slipper function the clutch hub is forced out to release plates. If the hub is worn or notched the slipper feature changes from what you have become used to. EVR is unique to all. It has a secondary hub inside the driven hub that has ramps (on needle bearings) that opperates seperate of the driven hub to push the pressure plates apart. This creates a consistent slipper feel and a longer lasting hub(all the 'ball on ramp designs are steel ball on aluminum ramps and wear into ones other. EVR has a steel secondary slipper hub applying forces to steel needle bearings in the top pressure plate).

Atleast this is my understanding. I know there are different STM clutches but I don't know the difference between them. I use a Kbike slipper clutch(on my dry clutch converted hyper. same as Ducabike). If I had the money I would have an EVR....an EVR with a titanium 48t basket(they are made by Ti mar solutions) But that's just a pipe dream for me.

I'm sure I messed up some names/terms and I'm sure there are spelling/grammar errors. This is how I know these systems to work. I'm sure there there are errors.

 

[Max]

Thank you bro I really appreciate the through and well written response. EVR is actually a lot cheaper than both ducabike and STM. EVR was the choice of arubia too for a while. Maybe I’ll need to just pull the trigger on the EVR as if prefer a better clutch than just looks

 

[JHTmcrider]

Yea, price is significantly better! Any idea what the part numbers are needed?

 

[JHTmcrider]

Looks like Belissimoto gives you a tool for installation: EVR Control Torque System (CTS) DRY SLIPPER CLUTCH Conversion Kit With Sintered Plates for Ducati Pangiale / Streetfighter / Multistrada V4