Automatic clutches for MX

deuxlatch · 10-29-2009, 02:05 PM

I've been looking into an automatic clutch (i.e. Revloc, Rekluse, etc.) for some time. Can anyone give me pros and cons on their experiences with these? I'm an occasional track rider with the SSR and sometimes hit the trails as well. My next bike will be a CRF450, what will work best for me?

280CRF · 10-29-2009, 03:19 PM

mr. sam at city cycles of br. has a rekluse on his crf450 an he seems to love it from what he tells us. It looks like to me it just makes it easier to not stall the bike and stuff. You can still use the clutch but you dont have to. Talk to mr. sam if u got some questions about it.

wwhit · 10-29-2009, 06:00 PM

Quote:

Originally Posted by 280CRF

mr. sam at city cycles of br. has a rekluse on his crf450 an he seems to love it from what he tells us. It looks like to me it just makes it easier to not stall the bike and stuff. You can still use the clutch but you dont have to. Talk to mr. sam if u got some questions about it.

You do not have to use the clutch lever to change gears. The older version killed the need for the lever. You still have to shift. However, the pro version allows you to override the Rekluse so you can fan the clutch to get higher RPMs if you want.

As I found out last week at Wildwood, if you Rev really high RPM's in a gear, just letting off the gas is not enough. You must also pull the clutch in. This only has happened during starts. I was screaming down the hill in 2nd gear and let off the gas to break, but the engine kept pulling. I went off the track and could not make the turn. Glad there were no trees. The next time I shifted into 3rd and did not have the same problem.

Sturgie · 10-29-2009, 07:46 PM

I have been using REVLOC automatic clutches since 2003. I HIGHLY recommend 'em. Once you try it, you will NEVER want to ride any other way. At least i think so.... : )

Stephen

gdaigle · 10-29-2009, 10:06 PM

Quote:

Originally Posted by wwhit

You do not have to use the clutch lever to change gears. The older version killed the need for the lever. You still have to shift. However, the pro version allows you to override the Rekluse so you can fan the clutch to get higher RPMs if you want.

As I found out last week at Wildwood, if you Rev really high RPM's in a gear, just letting off the gas is not enough. You must also pull the clutch in. This only has happened during starts. I was screaming down the hill in 2nd gear and let off the gas to break, but the engine kept pulling. I went off the track and could not make the turn. Glad there were no trees. The next time I shifted into 3rd and did not have the same problem.

Wwhit so it felt like less engine decompression,sturgie does the revloc acts the sameway

motood · 10-30-2009, 01:55 PM

The Rekluse Pro and older versions use ball bearings that are forced outward in the basket on ramped groves by the centrifical force of the basket spinning that typicaly disingage at around 1200 rpm ( can be adjusted)------how many rpm would a 450 be turning in second gear at the end of Kentwoods

start????------could take awhile to come back down by just letting off the gas

moto-tech · 11-06-2009, 08:45 AM

I only have experience with the rukluse. It is a nice setup if the instructions are followed exactly. NO ASSUMPTIONS. NO SHORTCUTS. if you install it exact, then you will be happy. It does not eliminate engine braking, that calls for a slipper clutch like SDM. The slipper clutch works like a normal clutch but allows the clutch to dissengage on decelleration allowing it to freewheel into a corner much like a 2 stroke. The auto clutches simply allow it to freewheel at an idle then engage smoothly as rpm comes up. Both setups have a small learning curve to them. I reccommend trying a friends bike with one before purchase to see if it is for you.

wwhit · 11-06-2009, 09:19 AM

A slipper clutch is to keep the rear tire on the ground during engine breaking. Without it, the rear tire will bounce. A slipper clutch is more important on a road racing bike than a motocross bike given the traction of pavement. It provides more stability. Could you imagine going over a 100 mph then down shift going into a corner and have the rear tire start to bounce. It also keeps the engine from over revving.

The main purpose of a rukluse, is it allows you to run in a higher gear without killing the bike. You can lug the bike out of a corner in 3rd gear without having to feather the clutch and fear of killing the bike. Or if you miss a shift, the bike will not kill. Or if your running into the corner, you have to pull the clutch in and start breaking. In the heat of battle, you forget to pull the clutch in and break hard, the bike will kill. Not with a Rukluse.

The rukluse is very usefull in the woods. If you do not want the jumpy response of 1st gear in tight woods, put it in second. The clutch will automatically run at higher RPMs with having to feather the clutch.