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Old 04-04-2007, 01:42 PM   #10306
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Hello All,

problem 1:
I've been having a problem with extremely quick wear of my front tires relative to my rear tires.

For example, after two runs on asphalt or carpet the center bead on the front tires is completely gone and the tires are wrinkled while the rear tires still have the center bead and basically look like they came out of the package.

problem 2: on carpet only my rear inner tire will sometimes lift.

I run the same setup on asphalt and carpet in stock.

The car handles o.k. but any setup can be better. Below is my setup. My set up is close to Jeff Brown's 06 nats speedworld setup (with minor changes). Any suggestions would be appreciated.

Front:

Spool.
Roll center blocks position 1.
Inside camber location: low, 2nd hole from outside.
75% arms.
arm shock position: most outer hole.
tower position: 3nd hole in from outside.
19lB springs.
pistion: 1.1mm.
25 wt oil.
zero toe.
droop: 4.5 on yokomo guage.
camber -1.5

Rear:

Roll Center Blocks. position 3 front, position 2 rear ( 1.6 anti-squat)
inside camber location: low, 2nd hole from outside.
75%.
arm shock position: stock extension hole.
tower position: 2nd hole in from outside.
17lB springs.
piston: 1.1mm
25 wt oil.
2 degrees toe in.
droop: 4 on yokomo guage.
camber: -1.5
stock hub, stock position.

options:
SRC offset motor mount. Chassis is balanced.
2.4mm new upper deck.
Mazda 6 body.
1.9mm sway bar (used on carpet only)
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Old 04-04-2007, 01:45 PM   #10307
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Quote:
Originally Posted by Obsidian
Hello All,

problem 1:
I've been having a problem with extremely quick wear of my front tires relative to my rear tires.

For example, after two runs on asphalt or carpet the center bead on the front tires is completely gone and the tires are wrinkled while the rear tires still have the center bead and basically look like they came out of the package.

problem 2: on carpet only my rear inner tire will sometimes lift.

I run the same setup on asphalt and carpet in stock.

The car handles o.k. but any setup can be better. Below is my setup. My set up is close to Jeff Brown's 06 nats speedworld setup (with minor changes). Any suggestions would be appreciated.

Front:

Spool.
Roll center blocks position 1.
Inside camber location: low, 2nd hole from outside.
75% arms.
arm shock position: most outer hole.
tower position: 3nd hole in from outside.
19lB springs.
pistion: 1.1mm.
25 wt oil.
zero toe.
droop: 4.5 on yokomo guage.
camber -1.5

Rear:

Roll Center Blocks. position 3 front, position 2 rear ( 1.6 anti-squat)
inside camber location: low, 2nd hole from outside.
75%.
arm shock position: stock extension hole.
tower position: 2nd hole in from outside.
17lB springs.
piston: 1.1mm
25 wt oil.
2 degrees toe in.
droop: 4 on yokomo guage.
camber: -1.5
stock hub, stock position.

options:
SRC offset motor mount. Chassis is balanced.
2.4mm new upper deck.
Mazda 6 body.
1.9mm sway bar (used on carpet only)
maybe try using Jeffs set up to the "T"
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Old 04-04-2007, 01:47 PM   #10308
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Quote:
Originally Posted by Obsidian
Hello All,

problem 1:
I've been having a problem extremely quick wear of my front tires relative to my rear tires.

For example, after two runs the center bead on the front tires is completely gone and the tires are wrinkled while the rear tires still have the center bead and basically look like they came out of the package.

problem 2: on carpet only my rear inner tire will sometimes lift.

I run the same setup on asphalt and carpet in stock.

The car handles o.k. but any setup can be better. Below is my setup. My set up is close to Jeff Brown's 06 nats speedworld setup (with minor changes). Any suggestions would be appreciated.

Front:

Spool.
Roll center blocks position 1.
Inside camber location: low, 2nd hole from outside.
75% arms.
arm shock position: most outer hole.
tower position: 3nd hole in from outside.
19lB springs.
pistion: 1.1mm.
25 wt oil.
zero toe.
droop: 4.5 on yokomo guage.
camber -1.5

Rear:

Roll Center Blocks. position 3 front, position 2 rear ( 1.6 anti-squat)
inside camber location: low, 2nd hole from outside.
75%.
arm shock position: stock extension hole.
tower position: 2nd hole in from outside.
17lB springs.
piston: 1.1mm
25 wt oil.
2 degrees toe in.
droop: 4 on yokomo guage.
camber: -1.5
stock hub, stock position.

options:
SRC offset motor mount. Chassis is balanced.
2.4mm new upper deck.
Mazda 6 body.
1.9mm sway bar (used on carpet only)
You have to consider that at the Nats the Spec Tire was RP36s and the temparature (ambient) was 85-90 degrees. Also the track was prepped with a pretty killer (soda syrup) solution. This setup may not fit your track conditions.

What tires are you using, what ambient air temp, what track temp, what kind of surface (sealed, new asphalt, old asphalt) etc.?
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Old 04-05-2007, 10:15 AM   #10309
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Quote:
Originally Posted by Advil
You have to consider that at the Nats the Spec Tire was RP36s and the temparature (ambient) was 85-90 degrees. Also the track was prepped with a pretty killer (soda syrup) solution. This setup may not fit your track conditions.

What tires are you using, what ambient air temp, what track temp, what kind of surface (sealed, new asphalt, old asphalt) etc.?

Well, being the same track, same tire, and around the same time of year (very close to the same temp), and same traction compound I would think that Jeff's setup would not eat up tires so fast. It didn't when I used it last year. The only difference is probably the sauce on the track. Maybe its just my driving..ha!
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Old 04-05-2007, 10:34 AM   #10310
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Quote:
Originally Posted by Obsidian
Well, being the same track, same tire, and around the same time of year (very close to the same temp), and same traction compound I would think that Jeff's setup would not eat up tires so fast. It didn't when I used it last year. The only difference is probably the sauce on the track. Maybe its just my driving..ha!
It's the same sauce we used all last year that we are using this year.
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Old 04-05-2007, 10:37 AM   #10311
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Quote:
Originally Posted by Obsidian
Well, being the same track, same tire, and around the same time of year (very close to the same temp), and same traction compound I would think that Jeff's setup would not eat up tires so fast. It didn't when I used it last year. The only difference is probably the sauce on the track. Maybe its just my driving..ha!
It seems a bit cooler than the Nats weekend.... See me this Saturday and I will give you my one-way setup.

P.S. I am using Sorex 36r with Xenon Green inserts.
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Old 04-11-2007, 07:55 AM   #10312
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Default Spur

I am running the 13.5 bl setup with the original bonded rotor and the 78 spur gear. I am almost have the largest pinion now. My next step will be replacing the rotor with the sinster rotor. Need to know what size spur gear is recommended to use and/or FDR.
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Old 04-11-2007, 09:25 AM   #10313
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Quote:
Originally Posted by rcgen
I am running the 13.5 bl setup with the original bonded rotor and the 78 spur gear. I am almost have the largest pinion now. My next step will be replacing the rotor with the sinster rotor. Need to know what size spur gear is recommended to use and/or FDR.
maybe around a 5fdr to 5.4fdr (sintered rotor) or so im going to run it on sunday
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Old 04-11-2007, 09:31 AM   #10314
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Quote:
Originally Posted by rcgen
I am running the 13.5 bl setup with the original bonded rotor and the 78 spur gear. I am almost have the largest pinion now. My next step will be replacing the rotor with the sinster rotor. Need to know what size spur gear is recommended to use and/or FDR.
try 96/38 (64 pitch)
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Old 04-11-2007, 09:59 AM   #10315
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Quote:
Originally Posted by Marcos.J
maybe around a 5fdr to 5.4fdr (sintered rotor) or so im going to run it on sunday
I was running 78/35 48pitch with FDR 4.46 bonded. In our touring class,we ran 4300, 13.5, 19t and 27t pancar. I was staying close with the 19t but was gearing it to the moon
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Old 04-11-2007, 10:09 AM   #10316
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Quote:
Originally Posted by rcgen
I was running 78/35 48pitch with FDR 4.46 bonded. In our touring class,we ran 4300, 13.5, 19t and 27t pancar. I was staying close with the 19t but was gearing it to the moon
go up another tooth or 2
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Old 04-11-2007, 10:31 AM   #10317
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Quote:
Originally Posted by Marcos.J
go up another tooth or 2

I'll have to try that. Hopefully I will not need all that gear for the next state race at Superior
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Old 04-12-2007, 08:24 PM   #10318
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Searched and Searched, but couldn't really find what I needed.

Asphalt Foam Setup for RDX
Running 13.5 BL
I have the 2.4 chassis.

Thanks for the help!

Tom
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Old 04-20-2007, 07:33 PM   #10319
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I have the same question. We run at a 112' x 76' permanent outdoor asphalt track, med to low traction, and allow foam tires. What's a good RDX set-up on foams... and which foams ? and at what height, I assume 57 (big race) to 59 (club race).

Setups for stock and 19T....
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Old 04-20-2007, 09:43 PM   #10320
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Quote:
Originally Posted by swopemike
I have the same question. We run at a 112' x 76' permanent outdoor asphalt track, med to low traction, and allow foam tires. What's a good RDX set-up on foams... and which foams ? and at what height, I assume 57 (big race) to 59 (club race


Setups for stock and 19T....
Why?


Guys there are no foam on asphalt set-ups on the website or any were either, we dont run foams on asphalt thats a gas thing..
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