[Farmy22]

Anyone ever thought of trying to convert an auto clutch to one with a cable and clutch lever? It seems doable, The auto clutch is the same basic principal as say a dirt bike or 300EX. It just operates from the shifter linkage instead of a lever on the bars. I think I'm going to try it, just wondering if anyone else has done it or tried it.

 

[Helmut]

Actually, it's a little different, because the auto clutch engine has a centrifugal clutch in addition to the change or shift clutch. But I agree that it would work if you could figure out a way to engage/disengage the shift clutch. You would have to do away with the internal clutch lever, the clutch free play adjusting screw, the ball retainer, and the lifter cam. You would have to have a mechanism to push in on the clutch lifter plate and bearing when you pulled the lever. You would need a lever and shaft setup like on a manual clutch model. You would have to alter the side cover to incorporate this, which in my opinion, might be hard to do. Also, remember that when you let out on the clutch lever, the centrifugal clutch would already have to be engaged by engine speed, before the shift clutch can engage and pull, but I don't think that would pose a problem.

Anyway, good luck and let us know how it goes.

 

[tomgodd]

Interesting! Keep us informed.

 

[Farmy22]

Actually, it's a little different, because the auto clutch engine has a centrifugal clutch in addition to the change or shift clutch. But I agree that it would work if you could figure out a way to engage/disengage the shift clutch. You would have to do away with the internal clutch lever, the clutch free play adjusting screw, the ball retainer, and the lifter cam. You would have to have a mechanism to push in on the clutch lifter plate and bearing when you pulled the lever. You would need a lever and shaft setup like on a manual clutch model. You would have to alter the side cover to incorporate this, which in my opinion, might be hard to do. Also, remember that when you let out on the clutch lever, the centrifugal clutch would already have to be engaged by engine speed, before the shift clutch can engage and pull, but I don't think that would pose a problem.

Anyway, good luck and let us know how it goes.

I had thought about the centrifugal but ruled it a non issue because you always throttle up to go with a manual clutch anyway. Like you said, it would be engaged by the engine speed already. Might be a little tricky to drive but may work in my favor too. I have actually thought about using the threaded hole for the adjuster as a possible entry point for a clutch lever. Is the side cover aluminum or magnesium? If it's mag, i'll have a fun time tig welding to it...haha This is mostly thought so far. I have not done any measuring or figuring with the cover off yet. I should get another cover to experiment with so I don't destroy mine. Maybe a cover from a dirtbike too to cut parts from...

 

[Helmut]

Is the side cover aluminum or magnesium?

I'm not sure but I think it might be an aluminum/magnesium alloy.

 

[Farmy22]

It's hard to tell with the Japanese what kind of metal it is eh. Maybe i'll shave a little off of an inconspicuous place and see if it burns. Anyway, is this even interesting to anyone or am I the only one that wishes there was a manual clutch option to a 4x4? Maybe there is a market to this kind of modification?

 

[Helmut]

Anyway, is this even interesting to anyone or am I the only one that wishes there was a manual clutch option to a 4x4? Maybe there is a market to this kind of modification?

I'm satisfied with the auto clutch, but I've heard a lot of people say that they would like to have a manual clutch, so there may well be a market for it.

 

[TRX2fiveO]

Just put a manual clutched engine on a non--sport frame.

 

[Farmy22]

I've done that before but I'm wanting 4x4 too.

 

[tomgodd]

I think its COOL as hell. I hate auto. Like my boys 50. It does not stop well. I like being able to disengage the engine completely. Auto is nice but I really don't care foe it in my vehicles either.

 

[Farmy22]

I think its COOL as hell. I hate auto. Like my boys 50. It does not stop well. I like being able to disengage the engine completely. Auto is nice but I really don't care foe it in my vehicles either.

I especially do not like a full automatic like I think you're thinking. I'm talking about taking like my 90' 300 or rancher and putting a hand clutch on it like a sport bike. I like my snowmobiles to be automatic and thats about it. All 4 of my street vehicles are stick shift too. I just will not buy anything automatic. I've ridden them a lot and I just don't like them. That's most of the reason I decided to dump 1400 dollars into an old wrecked 300 4x4. Not that I can't afford a new one, just did'nt like any new ones I looked at. Power steering can go in the garbage as far as I'm concerned too.

 

[tomgodd]

I am a crank window kinda guy myself. I understand the conviniece of all the electric and auto stuff but its not as fun or reliable/cheap to fix. I like the full auto quads better than the semi auto. If I am gonna shift at all.... I would rather clutch.

 

[nisord]

manuel to auto conversion

im doing then opposit. i have a trx300ex that has a manuel clutch. this motor is on a mini buggy i built my boy but the clutch it to hard for him to pull in and there is no room for a 3rd pedal. i like to simplify this problem and install an auto clutch system in this. if there is one that will fit the splins on the shaft and case and the gear will match up also would be great. like to do as little cutting and machining as possable thaks for any help. you can contact me at [email protected] with knowledge of doing this convertion or where to get the parts.

 

[eavery]

For those wanting a manual clutch they make a conversion like the 250ex has a sport clutch wich can be both full auto or manual it uses the adjuster screw on a semi automatic and a push rod to disengage also has a new shift shaft to replace the old also comes with hydraulic line and clutch perch Ive seen these kits for sale for Honda crf50, xr50 and trx90,s but have only seen it for monkey engines although im sure u could rig a new 250ex clutch setup on lot of semi auto's ..

For the kid who cant pull the clutch just get him a hydraulic clutch vrs making it a auto be way cheaper and easier

 

[SYKO]

see if there is a recluse clutch for the 250-300ex I had one in my 500r and loved it.

 

[stu5969]

^^^agreed^^^^ on the Rekcluse clutch system. I was skeptical the first time I tried one on my friends CRF450r, and it was hard to get used to for a few minutes as I was grabbing for the clutch to not stall it in some slow sections. That is exactly what it was made for on these new big four stroke race bikes,(well,not exactly new anymore,lol) which are hard to restart in a hurry during a race if you happen to stall and fall under slow riding conditions.
I know they make them for regular cable clutch bikes,(not sure on hydraulic clutched bikes) and I think it would be a great idea for Honda to adapt their sportclutch design onto all utility quads for an option on machines capable of using it. It would be great fun to clutch it quick to keep the engine in it's sweet spot, and for a little help with getting the front end light to clear some trail obstacles.
Going to full manual clutch I think would be doable also, and it would be fun. You would still have your foot brake for the rear so no big deal on the loss of the lever,,just configure a new way to engage the parking brake.
This is how tomorrow's new ideas come into play, so good luck and keep up informed.
http://www.rekluse.com/

 

[gcextreme]

Bumping an old thread.

Is there a conversion or mod to do this, for older 250ex's without the sportclutch??

 

[TRX2fiveO]

Maybe??? Probably need the front cover and the clutch parts for starters