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Post by paulskirocks on Jun 4, 2009 13:21:11 GMT -5
Brad, I know you have the Draggin Skin for road racing only, and I know you said you would use it with the Kohler because of the width. I also know that regarding a clone thread, you mentioned that a disk clutch probably has an advantage over the drum.
What about the Draggin Skin for F200 vs. a 3 disk style? Do you think it could be as competitive as a 3 disk? I know that Jim D. said he would do some custom work, including a bunch of holes in the outer drum and a new material he wanted me to try. He said he would break in the clutch for the rpm I want, and if not satisfied, I can get a full refund.
So, I don't have much to lose, but I'd like your take on it, if you please...
Thanks
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Post by norcalacr on Jun 4, 2009 17:05:14 GMT -5
Why guess when you can test? Get the Draggin Skin and Brad's three disk together at Davis and see which one is faster.
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Post by brad42 on Jun 4, 2009 17:47:52 GMT -5
The only driver I have for my 'skin is a 22 tooth, we would need a 14 to compare.
My opinion is that if Jim Donovan (clutch God) is offering to do you up a custom Draggin Skin with a money back satisfaction guarantee, that is a no brainer.
The "disk clutch vs drum clutch" performance advantage I mentioned in the clone forum is specific to the stamped-steel drum vs any disk clutch, the disk clutch will always have a slight advantage. The drum has less surface area, and because of the stamping process is not exactly round. The Draggin Skin is a quality machined drum that can take LOTS of abuse. The cheapest disk clutch ($158 Ward Evolution) will always be more expensive than the best drum clutch ($110 Draggin skin). Since the clone class is all about cost containment, I stand by my comments there. Even the draggin Skin is banned under AKRA Clone rules (though allowed under Burris rules) because it is twice the price of a minibike clutch.
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Post by paulskirocks on Jun 4, 2009 18:26:41 GMT -5
Actually, I'd need a 13 tooth driver because of the close cross bar on the shifter chassis I have...
OK. I didn't know the DS clutch was banned under NKRA rules for clones. Yea, I know it seems like a no brainer, but I don't want him to waste his time if it is a waste. Although, I guess if I can give him feedback, then it wouldn't be a waste for him, because that is what he is after...
I guess the bottom line is I should test the clutches, including my SMC 2 disk Vortex and answer my own thread... for the sake of anyone else who might have this question... Maybe I should go direct drive instead...
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Post by norcalacr on Jun 5, 2009 10:11:14 GMT -5
Sorry - I wasn't clear. I meant the three disk from BradW vs Jim D drum so driver isn't an issue.
Phone Jim D and tell him what you want to test. If he is up for it than everyone is happy. Don't be surprised if the professionally tuned drum clutch beats the club set up disk clutch.
BTW - Considering the additional parts for tuning (springs, shoes), the draggin skin is not that expensive compared to the Noram GE. Ask me how I know.
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Post by Mitch Wright on Jun 5, 2009 11:52:48 GMT -5
Paul, Check out the new Burris Jack shaft picasaweb.google.com/burrisracing/BurrisRacingJackShaftKit?authkey=Gv1sRgCMKz_NiHreaHQg We have some new guys with that have bought older 2/ chassis that are installing F200's instead of cutting the chassis (which we have been doing) this is much more cost and time effective. FYI We have not played witha Draggin Skin clutch but have tried a few different 2 disc clutches we found 4-5 1/10 s with the 3 disc Tomar, much nicer power delivery off our slow corners. |
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Post by paulskirocks on Jun 5, 2009 12:04:52 GMT -5
Wow, that's pretty sweet. I wonder how much power is lost by using that? Also, is it F200 legal? That would be great for the big drivers... I don't have any problem, anyways. I just had to bend my seat struts a bit, and just run no higher than 64 teeth in rear, using mostly a 13 tooth driver... I just need a worthy clutch...  |
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Post by viacruc on Jun 5, 2009 12:38:24 GMT -5
Paulski - there's no restriction on 3-disk clutches for F200. Long as its a dry clutch, you should be G2G. Mitch is Wright (right) in that the 3-disk units do lock up more positively and can really pull you out of a corner better. Only reason I haven't gone with it myself is I can't afford it (at the moment). Maybe next year.
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Post by speedrome on Jun 5, 2009 12:54:04 GMT -5
The 3 disc tomar works the best out of all the disc clutches we experimented with ( Horstman, Bullet, etc.. ).. Its just VERY consistent. The 2 disc is fine but you need to stay on top of it with the maintanance. The Noram works ok unless your Billy Bowerman, He shredded a couple of em during testing.
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Post by paulskirocks on Jun 5, 2009 13:03:06 GMT -5
Thanks for the replies. What I was wondering about being legal is the Burris jackshaft that Mitch has a bunch of pictures of. picasaweb.google.com/burrisracing....gCMKz_NiHreaHQgThat is really a versatile piece of equipment and could save a lot of headache. That's what I was wondering about regarding robbing power, as well... |
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Post by brad42 on Jun 5, 2009 13:20:22 GMT -5
Legal - yes
Rob Power - a little
Half the price of a new frame (bare frame only) - probably
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Post by paulskirocks on Jun 5, 2009 13:25:16 GMT -5
208 bucks... Not bad, at all...
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Post by brad42 on Jun 5, 2009 17:57:21 GMT -5
208 bucks... Not bad, at all... So it's about $100 worth of stuff Jim is going to do to it. Interesting. |
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Post by paulskirocks on Jun 5, 2009 19:19:53 GMT -5
No, I was referring to the price of the Burris jackshaft. The clutch Jim is offering is at normal current cost, I think $130...
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