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Dry clutch vs wet clutch?

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Kradmelder
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PostPosted: 10:07 - 21 Jan 2013    Post subject: Dry clutch vs wet clutch? Reply with quote

Which do you have and which do you prefer?

I have one bike wet and one dry. I find the dry clutch doesnt like being slipped so much and you must rather use throttle, hence dry clutch doesnt work so well in sand, with the risk of burning the clutch. It also tends to 'jolt into gear if you let the clutch out a bit too quick, which means you can easily take a fall in sand or mud. The friction zone is much less.

I can see the advantage of a dry grabby clutch for track, and for prolonging oil life, but im prefer the smoothness of a wet clutch.
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Wave2k
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PostPosted: 11:18 - 21 Jan 2013    Post subject: Reply with quote

advantage of dry is weight and the fact it doesnt lose as much power from crank to wheel spinning in oil i believe.

Problem is they wear out quick and overheat and get snatchy in traffic.


Still id have a dry clutch every time, cant be the ring a ding ding of an open clutch cover Very Happy


I miss my Ducati Sad
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Walloper
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PostPosted: 14:23 - 21 Jan 2013    Post subject: Reply with quote

Never noticed any difference, advantage or disadvantage and I've had both. Confused

Probably a designer's whim/quim.
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Kradmelder
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PostPosted: 15:33 - 21 Jan 2013    Post subject: Reply with quote

Wave2k wrote:
advantage of dry is weight and the fact it doesnt lose as much power from crank to wheel spinning in oil i believe.

Problem is they wear out quick and overheat and get snatchy in traffic.


Still id have a dry clutch every time, cant be the ring a ding ding of an open clutch cover Very Happy


I miss my Ducati Sad


I think the advantage of the wet clutch is poor traction terrain so you can slip the clucth more and let it engage with a minimum of wheel spin.

But generally it means more oil changes and running higher synthetic oil grades.

I see BMW has gone over to a wet clutch on their new GS....hmmm. I wonder why.
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Howling TerrorOutOfOffice
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PostPosted: 15:49 - 21 Jan 2013    Post subject: Reply with quote

With the fairings off I can change my clutch plates in 15mins. Easier to do than brake pads. Not experienced any snatching/grabbing and I keep the clutch rattle to a minimum by adding an extra friction plate at the back of the basket. It's a mod that works well on my Ducati 944 ST2. As is removing 2 of the 6 clutch springs. I now have a much lighter clutch lever and also no issues from doing so. Toured 2 up with camping gear and it never slips.
I periodically whip the cover off and blast the dust out.

Suspect the speed of changing a clutch in the pits was another reason why the dry clutch was invented.

I prefer the quiet sound of a wet clutch tho.
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Kickstart
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PostPosted: 19:05 - 21 Jan 2013    Post subject: Reply with quote

Hi

Krad, suspect that having a large single plate clutch rather than a multiple plate clutch possibly has more effect than whether it is a wet or dry clutch.

All the best

Keith
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Kradmelder
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PostPosted: 19:17 - 21 Jan 2013    Post subject: Reply with quote

Kickstart wrote:
Hi

Krad, suspect that having a large single plate clutch rather than a multiple plate clutch possibly has more effect than whether it is a wet or dry clutch.

All the best

Keith


Ja probably but I think the reason for single plate is to utilise the weight benefit of a dry clutch and due to space layout of the engine configuration. Ducati as the best known dry clutch, not known what they do, but apparently it is also grabby. Bmw as the other well known dry clutch system, goes for a clunky system but no grabby. You need this on a torquey engine. But I think they will never match the smoothness that a wet clutch brings to a torquey set up.
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Kickstart
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PostPosted: 19:20 - 21 Jan 2013    Post subject: Reply with quote

Hi

Suspect the large flywheel / clutch is there to smooth out the engine with the large low revving pistons .

All the best

Keith
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TheBikerStig
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PostPosted: 19:26 - 21 Jan 2013    Post subject: Reply with quote

Wet clutches will rust quicker. Try to keep it dry which isnt easy in this country.
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Wafer_Thin_Ham
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PostPosted: 20:54 - 21 Jan 2013    Post subject: Reply with quote

TheBikerStig wrote:
Wet clutches will rust quicker. Try to keep it dry which isnt easy in this country.


Aye?
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Kradmelder
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PostPosted: 21:50 - 21 Jan 2013    Post subject: Reply with quote

TheBikerStig wrote:
Wet clutches will rust quicker. Try to keep it dry which isnt easy in this country.


Wtf? At least put a lol after your jokes.
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Valentino Mossy
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PostPosted: 22:51 - 21 Jan 2013    Post subject: Reply with quote

Other bikers hate my rattle..... hence why i love it. Thumbs Up Wink Open dry clutch ftw.
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Ariel Badger
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PostPosted: 23:46 - 21 Jan 2013    Post subject: Reply with quote

I want rapid power to the rear wheel. dry clutch gives me that.
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DottyDuck
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PostPosted: 05:06 - 22 Jan 2013    Post subject: Reply with quote

... I'm just going to nod and agree! I wish my knowledge on bikes was much better than what it is. boo-hiss.
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Alpha-9
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PostPosted: 09:55 - 22 Jan 2013    Post subject: Reply with quote

I'm guessing wet is always on small newbie bikes as they'd rape their clutch with inexperience else
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Kradmelder
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PostPosted: 10:18 - 22 Jan 2013    Post subject: Reply with quote

Alpha-9 wrote:
I'm guessing wet is always on small newbie bikes as they'd rape their clutch with inexperience else


doubt manufactures care. I think wet is cheaper. And space and weightr are less of an issue on small motors.

Single plate dry probably takes the least space so they do that when the engine configuration is constricting.
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Alpha-9
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PostPosted: 10:28 - 22 Jan 2013    Post subject: Reply with quote

Kradmelder wrote:
Alpha-9 wrote:
I'm guessing wet is always on small newbie bikes as they'd rape their clutch with inexperience else


doubt manufactures care. I think wet is cheaper. And space and weightr are less of an issue on small motors.

Single plate dry probably takes the least space so they do that when the engine configuration is constricting.

Weight is an issue on small bikes moreso than big ones surely?

I imagine they do care as its creates a reputation for the bike, if they brought out a newbie bike where the clutch was jolty and unsmooth then it wouldn't sell as well as newbies wouldn't get on with it very well, hence why the YBR is a strong seller, it's renowned for being easy to ride
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Walloper
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PostPosted: 13:00 - 22 Jan 2013    Post subject: Reply with quote

Kradmelder wrote:
Alpha-9 wrote:
I'm guessing wet is always on small newbie bikes as they'd rape their clutch with inexperience else


doubt manufactures care. I think wet is cheaper. And space and weightr are less of an issue on small motors.

Single plate dry probably takes the least space so they do that when the engine configuration is constricting.


A wet clutch should 'theoretically' last longer than a dry clutch as the shearing forces on the oil transmit drive from drive plate to driven plate when the drive is 'taken-up'. Oil is changed much easier than clutch linings.
This is why a wet clutch is used.
But.... Any clutch is designed to last the 'life-time' of the vehicle.

The fact that they are 'the fcuk abused out of' means they don't last very long in some hands/feet.
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P.
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PostPosted: 13:01 - 22 Jan 2013    Post subject: Reply with quote

Never had or ridden a bike with a dry clutch.

Even when I used a Ducati, it was a wet clutch Laughing
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