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Author Topic:   Rear gear
x13jc
Member
posted July 10, 2000 07:53 AM
Am currently running a 543 for a 3/8 paper clip, med. banked track. 57% rear, question is, by putting in a 529, will I get less wheel spin? 406 motor.


jammin
Administrator
posted July 10, 2000 10:02 AM
What kind of RPM are you running now?


x13jc
Member
posted July 10, 2000 03:32 PM
quote:
Originally posted by jammin:
What kind of RPM are you running now?

6,000rpm at end of straight.



jammin
Administrator
posted July 10, 2000 03:36 PM
Doesnt sound like your turning it that hard anyway.


SCOOTER M40
Member
posted July 10, 2000 05:19 PM
I know 99% of racers will say I'm wrong ,BUT
if u do this and dont hook the car up U will have more wheel spin than U have now.
Ask any 1 that wins on dry slick tracks and they will tell U the same thing,if U go to a higher range gear and turn the same RPM the tires are going faster so if the track has slowed down and gotten slick U went the wrong way.Try going the other way and U will be past the tourqe range on the moter and it will be alot easyer to hook up(kinda like driving in the snow,if U have the car in high
gear the speedo reads 100 MPH and your only going 20MPH,but if u put the car in low gear
ang go the same RPM your car still mite only be going 20 MPH but the back tires will only be spinnig close to that speed to.
Hope this helps


x13jc
Member
posted July 11, 2000 07:17 AM
Well, let me say that 6,000 is on a good night, most of the time I am have to feather the throttle, just not bitting hard enough for me, so I thought that if I went to a 529 instead of 543 which I am running now, it would allow the motor work alittle harder, less wheel spin.
Thought that I would ask before I did it.
You know me Jammin, I am just a rookie in this class.


x13jc
Member
posted July 11, 2000 07:19 AM
I also think that probably my tires one of the culprits.
Thanks for the input from all.


GnarlyCar
Member
posted July 13, 2000 03:07 PM
X13,
You say that with the gear you have now, you have to feather the throttle. Believe it or not, this is a good thing.. If you had a low enough gear that you could hold the throttle to the floor you'd get your a$$ handed to you every night.
Judging from the RPM you're running now, I would think you'd be right in the ballpark. I run a 377 and gear to turn around 6500 on dry slick.
I have to agree with Scooter, too.. I've had the experience he's describing. Too low a gear+wheelspin=more wheelspin. There's a fine line in there that you don't want to cross, and it sounds like you're pretty close to it already. Probably should look into some good tires if the ones you have are in question.
Also, your right foot may be the culprit too.. Some of the best runs on dryslick are made with barely half throttle.
Try to figure out exactly where in the turn your wheelspin is starting. If you're spinning your tires in the middle of the turn, back off the throttle till they don't. If this makes your car push, you gotta loosen it up. Loosen it till you can roll it (not slide it) through the middle of the turn and your forward bite should come naturally. I'll warn you though..with this style of set-up, any time you do get wheelspin will be REALLY bad so you need to be REALLY patient with your pedal. You'll probably need to run it more than a few nights that way to figure it out, but stay with it and it will pay off.. Any time you can roll your car instead of sliding it, you WILL be faster.

Something to think about...try turning laps without turning your steering wheel right of center... it works very well if you're patient enough to chase the set-up.

For what it's worth, I'm done rambling..
Matt


x13jc
Member
posted July 14, 2000 07:01 AM
thanks for the input from all. The tires are good for about 3 laps, then just disappear.
Very good advise from scooter and gnarley.


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