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Is "Power Torque Clutch" marketing speak for a slipper clutch or something along those lines? I have no idea - just a thought. I'd really like to have a 6th gear though.
 

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Discussion Starter · #3 ·
It was refered to a "Slipper clutch" on Ducati.com. What does this mean? Is it simply that less hand strength is needed to press the clutch?

Any input is appreciated. I think i am going to just get the 2004 620 just to get the 6 speed and clutch technology. I can settle for the painted black! :)

http://www.ducati.com/bikes/my2004/ducatiModel.jhtml?modelName=620-04

Reads,
"The 620 is the perfect entry to the Monster family. Easy to maintain, it is the lightest and easiest handling Ducati. The motorcycle of choice for the official Ducati riding courses, the 620 offers a low seat height, a new slipper clutch for seamless shifting, a new, colour-matched front fairing, newly designed mirrors for increased visibility, and a comfortable, upright riding position."
 

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Discussion Starter · #4 ·
Did some research. STM makes race application slipper clutches for ducati, and now jap bikes too.

The STM clutch claims to provide more sensitive feel and lighter action off the line. What does THAT mean!? I know the STM Clutch and the new Ducati PTC Clutch is not the same...

But it sounds like less effort is needed to press the clutch and thus means less tired hands = more clutch feel and lengthened durability?

Am i wrong?
 

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Discussion Starter · #5 ·
Found more info...This pertains to non Ducati brand.

These slipper clutches take the worry out of downshifting a high compression v twin Ducati. The clutch compensates for over engine braking thereby preventing wheel hop entering the turn. the clutch pressure plate now features a ceramic coating on the wear surface to improve clutch life. The pressure plate is red, and has a lazer engraved yoyodyne logo.The Clutch basket is hard anodised for long life. The 45 degree disengagement ramp is favored for its lack of abuse on clutch plates. The clutch pack lasts longer with this design than clutches with shallower ramps. All necessary parts are included for instalation on either street or race motors. These clutches are also SIGNIFICANTLY lighter than the original ones. This reduces the weight of the motorcycle, as well decreases the rotational mass of the motor.

http://shop.store.yahoo.com/yoyodyne-titanium/slipclutkit.html
 

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After looking at the parts diagram on the Ducati Website, I think it is a sort of slipper clutch. It also appears to have 11 friction plates :eek: as opposed to the 9 plates of previous years. Unless it takes a deeper side cover, I don't see why it couldn't be adapted to a 750cc bike also ;D. Ducati might not know how durable it is and they want to try it out on the bike with the least power :'(, that has to be shifted more often, to test it's durability. Maybe in the next couple of years it will be on all Ducati motorcycles :) :) :).
 

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Discussion Starter · #7 ·
Then is it smart to buy a new bike and be a test rider? Or should i opt to stay with my original decision with the slightly cheaper proven Dark model with 5 speeds?
 

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I see no reason not to buy the new one. The design reminds me of some of the racing type slipper clutches that are designed to handle 100+ horsepower, besides, the 620 really needs six speeds to keep the motor happy, and the rider. ;D
 

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Discussion Starter · #9 ·
a friend of mine who is advising me about my 1st bike is saying that the slipper clutch and extra gear wont really mean much to a new rider like myself. He is suggesting i go with the cheaper proven dark model and master the bike. then upgrade later to another bike with all the gizmos once i am experienced. the price difference is minimal. I love the flat black finish.

So torn now.
 

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My first bike was a 1985 Honda 500 Interceptor that I thought would be as much bike as I would need for a long time. After about 3 months I was ready for an upgrade, but I was stuck with the bike I had until I could afford to sell it and buy something else. While I agree with the theory of starting out on a small bike and working your way up, for the minimal difference in price, I would get the 6-speed version so that when you get accustomed to riding, you have the tools at your disposal to enjoy this bike longer. Therefore you won't be trying to trade up 6 months after you buy the bike. The 620ie has so much room for improvement that when you're ready for more power, it will be easy to get without having to trade it in, and having the 6-speed with the slipper clutch will allow you to enjoy the bike that much better. besides, the slipper clutch will in no way hinder your learning experience. I'm sure that if you really want the dark look you can find a tank that someone would be willing to trade for a painted one.
 
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Here's my .02: I am a very experienced rider and have an '02 620 Dark. I would MUCH rather have the 6th gear than the black paint. Paint you can change, but adding another gear isn't an option most would be able to tackle. Go for the six speed! As for the slipper clutch, that would seem to be a safety feature for a novice rider who might mistakenly downshift one to many times entering a corner and cause the rear wheel to lock up. The slipper clutch will pretty much prevent this, and as you get better it will allow you to greatly increase your corner entry speeds and exits with good rear wheel control. Go for it!
 

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A slipper clutch & an extra gear have got to be worth at least $1000 (to me). Your friend who said that those things would be useless to you is an idiot.
 

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Discussion Starter · #16 ·
alright alright, i think i am gonna go for the 2004 620 6spd. no need to call my firend an idiot. I am just waiting for march until the msf courses arent sold out. I might also take the riders edge course offered by harley davidson.

I will def keep everyone here updated when i come close to buying.

This site is a tremendous help.
 

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Hi Matt,

good choice, new 620 is a good bike with that more softer lighter clutch and that 6th gear.

It also has a new mirrors !!!!

Get it , ride it and then some more.

Skier
 

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...I might also take the riders edge course offered by harley davidson.
Doesn't Harley Davidson offer their own MSF-equivilent course?
 

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Discussion Starter · #19 ·
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