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Old 11-29-2012, 08:17 AM
  #8146  
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I suspect the body change will fix your issue. R9 body is very nose heavy.
Also have a look at the under side of your rear arms. In high grip the wheels will flex enough to drag on the "stiffening" ribs under the tear arms.

Dave.
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Old 11-29-2012, 08:20 AM
  #8147  
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Maybe a reduction in rear toe, in addition to raising the rear roll-center and more rear camber. Should smooth it out.
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Old 11-29-2012, 09:05 AM
  #8148  
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thanks guys for all the response. i started with high roll centers. both in front and rear. (hinge pin further from the chassis). i then lowered it. (pin closer to the chassis) it seemed to be slightly better lower. but none the less, it was still present. in regards to rear toe. i started at 2degrees. i went to three and then to zero. it was present in all situations. camber is at 2degrees. the only other thing i can think of is that the diff is too soft. Maybe 2000 weight would help. almost like the car is diffing out.

mike haynes iic vegas setup is showing #1 upper shock hole position. which seems extreme to me. I have three setups i going to try tomorrow. im going to start with his and tweak it for my driving style. i'll update the results.

i always get roll center mixed up. sorry. but right now the pins are closest to the chassis. i started with pins highest from the chassis.




Originally Posted by kewdawg
Maybe a reduction in rear toe, in addition to raising the rear roll-center and more rear camber. Should smooth it out.
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Old 11-29-2012, 09:06 AM
  #8149  
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ill look and keep you posted. yes im going to run the mazda. thats what my s411 liked and i like the feel of the body.



Originally Posted by mtbboy
I suspect the body change will fix your issue. R9 body is very nose heavy.
Also have a look at the under side of your rear arms. In high grip the wheels will flex enough to drag on the "stiffening" ribs under the tear arms.

Dave.
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Old 11-29-2012, 09:21 AM
  #8150  
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Originally Posted by BAD007SUZUKI
Hi guys, coming from a serpent 411 to the new worlds car, does any know why the rear chatters or "skips" around corners? med/high grip carpet? I've tried everything except diff oil. which is stock. i also have the dual cardan from rsd and the aluminum spool outdrives.

Ive tried:
every camber link potition/length.
2mm inside ball stud all around.
2mm outside rear ball stud.
roll centers -h,m,l
droop
shock position (upper)


everything is free and smooth. car only has one race day and one practice day on it. im using a handmedown r9 body for now. my mazdas will be at the hobby shop today. the car is literally within grams from tire to tire and front to back. ive also tried sweep 32's and jaco blues. both do it.
Have you tried different springs? I would try softer rear.
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Old 11-29-2012, 09:28 AM
  #8151  
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i have not. i was using serpent yellow in front and whites in rear. for serpent, thats as soft as i could get it. i actually went to the stock silver associated springs and the car did exactly the same thing, and was as fast.
my thought is either i the diff or the car simply has too much traction. i dont know. this car is all new to me.







Originally Posted by jha07
Have you tried different springs? I would try softer rear.
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Old 11-29-2012, 09:40 AM
  #8152  
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Originally Posted by BAD007SUZUKI
i have not. i was using serpent yellow in front and whites in rear. for serpent, thats as soft as i could get it. i actually went to the stock silver associated springs and the car did exactly the same thing, and was as fast.
Howdy,

For Michiana I ran a set-up very similar to Kevens' GR set-up with a few tweaks for personal feel. If you don't have the Yoke springs I would run silver silver.

TBH, that set-up will get you 90% there for any carpet track. Even then I mostly tune with front dope application, droop and camber. For carpet just stick with the Mazda.

Mike Slaughter
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Old 11-29-2012, 11:48 AM
  #8153  
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thanks Mike, I printed that out. its very similar to the setup i just put on the car this morning with a few differences. . i'll post my findings after racing tomorrow.




Originally Posted by masterhit
Howdy,

For Michiana I ran a set-up very similar to Kevens' GR set-up with a few tweaks for personal feel. If you don't have the Yoke springs I would run silver silver.

TBH, that set-up will get you 90% there for any carpet track. Even then I mostly tune with front dope application, droop and camber. For carpet just stick with the Mazda.

Mike Slaughter
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Old 11-29-2012, 12:15 PM
  #8154  
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Here is my setup from the weekend. I came home third behind two very good Xray T4 drivers. Fastest laptimes were matching. This setup has a very direct steering without having any oversteer:

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Old 11-29-2012, 12:43 PM
  #8155  
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Default RSD Dual Cardan Joint binding

I just built two sets of the RSD DCJs. Two of the DCJ barrels are binding pretty badly due to a tight fit.

Will this work it's self out after a few laps or should I try to sand some of the surfaces?

Also is there a reason some of the set screws are black while others are silver?

I followed this when building them:
http://www.reflexracing.net/How-To-B...Way_ep_57.html
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Old 11-29-2012, 12:47 PM
  #8156  
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Walter, what I usually do is try to match a barrel to each axle individually. Usually you can find 4 barrels that match with the 4 axle holes. The tight fit should work itself out, but please break them in at 1/4 throttle on the bench by turning the wheels lock to lock for about 1 min.

They are made to be a little bit tighter so that they don't have a lot of slop. Use some black grease on them before you run them in though.

The silver screws are the new "knurled" set-screws, these hold much tighter than the previous version of the set screws.
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Old 11-29-2012, 01:39 PM
  #8157  
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Thanks, I'll use the silver screws then.
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Old 11-29-2012, 05:18 PM
  #8158  
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Default TC6.1 1 race day only

I've got a Tc6.1 that was raced one day Check outy posts.
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Old 11-29-2012, 09:05 PM
  #8159  
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Cristian, is there any instructions where to drill the hole the worlds chassis , for your floating servo mount?
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Old 11-29-2012, 10:05 PM
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Originally Posted by beyondthepack
Cristian, is there any instructions where to drill the hole the worlds chassis , for your floating servo mount?
I'll measure out and diagram the directions out tomorrow.
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