driveshaft speed question

Discussion in 'PSI Superchargers Tech Questions' started by procuda, May 19, 2013.

  1. procuda

    procuda New Member

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    Hi I run a naturally aspirated door slammer that makes about 1050 horse and a lenco 4 speed.its a 7.70 car with 17 33 tires and a4.56 rear gear.ive read here that driveshaft speed on a blower car should be approx.1800 rpm at .25 and approx.2300 at .5 sec out.Would anyone have some insight what would be an approx.wheel speed be for the above car?currently I'm at 998 rpm at .25 and approx1400 at .5.trying to learn and if this question should not be put in here I apoligize.thanks for any input...Mike
     
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  2. Mike Canter

    Mike Canter Top Dragster
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    I believe your wheel speeds listed are too low for a blower car and will put us into tire shake. They are much more inline with a nitrous car. Not sure we can give you the answer you are looking for because I am not sure that you can relate a blower car's performance to a naturally aspirated car like yours
     
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  3. procuda

    procuda New Member

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    thanks for the reply Mike.
     
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  4. JustinatAce

    JustinatAce Member

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    Different cars with different 4-links, shocks, tires etc.. Hard to tell what is right and what is "wrong" other than history and the time slip. A 2350lb Pro Stock car with 100" rollout tire and a 5.something rear gear typically looks for their DS RPM to be in a similar range you specified you heard for the blower car. Most of that comes from them winding up their tires like rubber bands, but also to hit it hard enough to set the chassis while getting the wheelie bar to unload the tires a little at the same time.

    The question is, what are you looking for out of the car? With 1050 horse and a 4.56 rear, it may be difficult to get it much higher, but if you can, just keep pushing it until the car slows down. Sounds like a stupid answer, but that's the only real way to find out.
     
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  5. procuda

    procuda New Member

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    no stupid answers Justinatace.I thank you for the reply.I'll be trying to keep pushing it with the base and counterwieght to see if we can get the #s higher.I am trying to learn and not afraid to try .thanks again....Mike
     
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