EFM Auto Clutch?
- Thread starter Moto7man
- Start date
I've had an EFM for almost 5 years and in two different Husky 125's and it works well. A lot of Husky guys 2 and 4 stroke, use them because Rekluse wouldn't make Husky applications. EFM has always had full manual clutch actuation and is much simpler to set up than Rekluse. Even If I go Gas Gas, I'll stick with EFM.
bukwheat
New member
I checked out their website and didn't see one listed for GG....do they make one for GG??? If they did, I'd be interested also.
GMP
Active member
The EFM is very simple, the faster the clutch spins, the more clamping force on the clutch pack. This force easily exceeds that of a normal manual clutch spring setup. The Rekluse setup allows for clamping force limitation, which is a good idea IMO. In high traction/hard surface conditions, a lot of shock or transient loads are placed on the transmission, which is a lot worse with the EFM. Being the GG has a decent cush drive setup in the clutch basket I suppose its less of a concern. Broken trans components are not uncommon with some bikes running the older EFMs and Revlocs, especially in the SM and dual sport crowd. Thats why most chain driven road bikes and some DS bikes have a cush hub.
EFMs were available for GGs years ago, Jim Cook used to sell them. I think they will basically make anything as they have to machine your basket.
EFMs were available for GGs years ago, Jim Cook used to sell them. I think they will basically make anything as they have to machine your basket.
As long as you don't ride like a @$$ on pavement, I think you'll be fine. I have a friend with an EFM on an older Gas Gas 300 with many trouble free miles riding enduros. This included a lot of paved transfer sections. I ride my '09 WR144 a lot of pavement miles doing enduro transfer sections and riding roads doing trail work for my club's enduro. I can list a 1/2 a dozen guys, who run EFM's trouble free.
I saw a guy with a SM bike and it wouldn't go foward anymore, he couldn't figure out why.... he had completely stripped the splines on his countershaft.
Lots of stoplight to stoplight racing (hard accel and hard braking) and that's where the strain came. I guess he was lucky he didn't destroy the whole motor. No EFM auto clutch was involved.
I saw a guy with a SM bike and it wouldn't go foward anymore, he couldn't figure out why.... he had completely stripped the splines on his countershaft.
Lots of stoplight to stoplight racing (hard accel and hard braking) and that's where the strain came. I guess he was lucky he didn't destroy the whole motor. No EFM auto clutch was involved.
Enjoy that new bike!
I have tortured the EFM auto clutch in my WR360 for 4 years now without having to touch a thing. Just keeps working no matter the extreme torque placed upon it. I like the fact you can use it with a hydraulic clutch like on the gas gas. I am going to get a 2012 200 xc and add the efm, electric leg, and left hand rear brake. Only difficulty will be making room for the hydraulic clutch override. Can't wait to do some tweaking to make it work for a fat, slow, old man.
