MAGURA HYDRAULIC CLUTCH 4 The R???

[TampaBoy813]

Cant find any info on this...what gives?

[robyone]

Were you looking for parts for one, or looking to get one? rocky mountain sells parts and complete units. I got mine off of ebay for 135.00 new. IMO hydro is the way to go.

[TampaBoy813]

Originally posted by robyone
Were you looking for parts for one, or looking to get one? rocky mountain sells parts and complete units. I got mine off of ebay for 135.00 new. IMO hydro is the way to go. Pics of the set up?

[Rich250RRacer]

You're going to get some people on here telling you to go with an easy pull system for your cable and avoid the hydraulic clutch, but everybody's entitled to their opinion. I would never go back to a cable clutch, I've run mine on my GNCC quad for about six years and have never had a problem.

[robyone]

Couldn't agree with more rich, I remember someone saying that they had the line hit the pipe and melt open. But there isn't enough slack on mine to even reach the pipe.
Not that I've had a problem with the plastic line, but it is the weak link in the system. But the possibility of something like that happening will be gone as soon as I replace it with the steel braided line that rocky mountain sells. ;)
I'll try and get pics up sometime this weekend.

[dunatic]

Originally posted by TampaBoy813
Pics of the set up?

here's mine

http://www.mpracing.biz/gallery/albums/album102/DSC00425.sized.jpg

[xlr810]

Sorry to jack this thread...

Dunatic-- where'd you get that cyl? And your pivot bolt-- is that a chrome cap on it? Nice!

[dunatic]

thats a Polanda (Polaris 400cc Scrambler cyl mated to a 250r bottom end.)

the cap i got on eBay....told him the bolt sizes and he made em for me.

[TampaBoy813]

Originally posted by dunatic
thats a Polanda (Polaris 400cc Scrambler cyl mated to a 250r bottom end.)

the cap i got on eBay....told him the bolt sizes and he made em for me. how do you like the set up?
Was it a lot of work to make that jug work?

[dunatic]

well...........let me open this can of worms for ya.

As you can see in the pic, the cylinder gets a lot of reinforcing. You have to mfg both intake and exhaust manifolds. The cases have to be bored (like you would for a ESR 350 cyl) to fit the BIG sleeve (85mm piston), then you either have to machine the cylinder or re-locate the base studs (the Polaris cyl is very close to the same pattern as the Honda). The advantage is the stroke for both the Honda and Polaris are the same, so port timing is a beautiful thing. Parts (piston, head gasket, intake gasket) are very reasonably priced from the dealer.

To do one of these conversions runs around $3k with new clutch, case labor, bearings, seals, cyl, head, etc. You only need supply a larger carb and a pipe that can handle the amount of exhaust pressure and volume. I use the keihen 39-41.5mm and I like the ESR TRX 5 or 11. The motor you see install put out 63hp and 51 ft lbs of torque and runs like a 4 stroke,,,lug it down and romp on it.

[TampaBoy813]

would love to see vid of this thing run!!!

[dunatic]

Youll have to wait til February when i go to the dunes next....Il get some video. Actually Im looking at some helmet cams right now and will do up so killer video on the next ride to the dunes.