03 viper vs 03 f7 in drag race ?

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binracin

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Aug 11, 2008
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6
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up state ny
i have the viper. it trail ported, tripple piped, head mod, done by bender racing. it has there helix, springs and heel clickers in the primary. bender racing tells me this sled should beat an 03 f7 from out the hole to topend. mine doesnt! this f7 is only piped and clutched. i beat it out the hole and till about 600 ft then it goes by me like i let off the gas !!! can some one tell me what i'm doing wrong please?
 
What are the RPMs like off then line? What are they like when he goes ripping by? What type of pipes are you running (assuming Bender)? Was gearing left stock?
 
Its not that your doing anything wrong, but if you assume your getting peak performance of power transfer thru an mail order clutch kit, thats where youd be making a mistake. I would start off in dialing the clutching in, sounds like if you have no topend then your helix has the incorrect finish angle with h/c's.
 
take their helix and spring and throw them in the garbage. keep the heel clickers and get yourself a hi-tech er roller with a 52/48 helix and cpc red/white spring. it will pull like a frieght train.
 
A properly set-up and piped Viper will Smoke an F-7 any year.

I have seen it done many times over.
 
If your clutching was worth anything, an F-7 would never pass you if you got it out of the hole. Theres just no way.

HC's are touch to tune and you need a shallow finish angle to make em work. I dont believe in a mail order kit that will go on every sled.
 
Things to check
alignment & centre to centre
rpm,s
temperature of clutch faces to make sure belt ain,t slipping
The belt itself
powervalves are all working fine
 
Funny, you must be the buddy of the guy over at HCS that posted a Bender Viper pulls him in 500ft, but he then walks it hard on top end?? If you are, he said he had a Black Magic whoop-*ss kit. He's asking for help on how to get you off the line and still take you on the top end, too.
 
Lol, no, not ss kit. *ss, as in a curse word that I was afraid the site sensor would change and no one would understand. Substitute "a" for the * Apparently it was still confusing. Black magic whoop-*** kit. (Edit: I wrote it out and it DID sensor it). Says nothing about twins, may not even be the same sled, but quite the coincidence if it isn't.

Maybe that is a 900 kit? I know less than nothing about Artic Cats. I do know that the f7 are fast on the top end with the help of only turning a 13-1/2 inch wide track. Can you imagine putting one on a piped Viper or SRX, gearing and clutching for it, and seeing what it would do on the top end? Quite a bit less rolling mass and resistance to turn.
 
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Maybe that is a 900 kit? I know less than nothing about Artic Cats. I do know that the f7 are fast on the top end with the help of only turning a 13-1/2 inch wide track. Can you imagine putting one on a piped Viper or SRX, gearing and clutching for it, and seeing what it would do on the top end? Quite a bit less rolling mass and resistance to turn.[/QUOTE]

f7's track are skinnier, but longer....so it evens out mass wise.
 
See? Told ya I didn't know anything about them. I'd heard that the track was narrower, but thought they were still a 121".
 
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