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Old 07-08-2012, 04:34 PM
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Qatmix
thanks for the info on steering, wasnt sure if the amount of slop in it was normal or not.
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Old 07-08-2012, 05:36 PM
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The slop seems to be in the little bearings, I haven't figured out a change for it but I think as far as slop goes at the wheels it's not too bad
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Old 07-09-2012, 07:48 AM
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Originally Posted by COLD AS ICE
are you using the CVD's in the front or DCJ's?
CVD's, They have been silent for a year, still no wear.. although I have never rebuilt them.
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Old 07-09-2012, 10:10 AM
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Originally Posted by CraigM
I think a 4t geared that low would rev out on the straight and have too much grunt in the infield. I'd start with a 4.5 at around 7.8FDR, but it depends what motor what speedo how much boost etc etc.
LRP x20 4.0T... TC Spec v2 soft v4... Planning on boost level 1 or 2.

8.7 too low you think? I already have the motor what do you recommend? What method of calculation are you using?

LRP actually recommends 9.0.

Last edited by Chris Furman; 07-09-2012 at 11:18 AM.
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Old 07-09-2012, 12:43 PM
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Ran my 417x for the first time, and was able to consistently run the car for first place. I used Marc's setup for the Reedy Race, but changed the rear diff oil to 900 and added little more front droop from 6mm to 5mm. Car felt very good at the end.

a little tip for those using the kyosho xrings for the shocks. I used a 0.2mm 4mm shim in the shock body to space out the rod guides to better seal the shaft. Use the flat side on the rod guide to mate with the xring. Smooth shocks, but minimal leak at the end of the day. Much better than the standard orings.
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Old 07-09-2012, 12:53 PM
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Originally Posted by inpuressa
Ran my 417x for the first time, and was able to consistently run the car for first place. I used Marc's setup for the Reedy Race, but changed the rear diff oil to 900 and added little more front droop from 6mm to 5mm. Car felt very good at the end.

a little tip for those using the kyosho xrings for the shocks. I used a 0.2mm 4mm shim in the shock body to space out the rod guides to better seal the shaft. Use the flat side on the rod guide to mate with the xring. Smooth shocks, but minimal leak at the end of the day. Much better than the standard orings.
Im glad for your outcome! I am running his setup for carpet and havent had the opportunity to actually race it and tune it, but I will be rather soon! Rain in FLorida is horrendus!
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Old 07-09-2012, 04:10 PM
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Originally Posted by Chris Furman
LRP x20 4.0T... TC Spec v2 soft v4... Planning on boost level 1 or 2.

8.7 too low you think? I already have the motor what do you recommend? What method of calculation are you using?

LRP actually recommends 9.0.
I haven't used the x20s so maybe start as you have planned, on a big track like that I think you'll want more boost and at least another tooth or two. On the big nitro track near me I used to run the 4.5 octa at 7.6 with 4 feel and 5 boost

Spur/pinion*IR
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Old 07-09-2012, 04:17 PM
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Originally Posted by silverhkswrx
Im glad for your outcome! I am running his setup for carpet and havent had the opportunity to actually race it and tune it, but I will be rather soon! Rain in FLorida is horrendus!
I run on asphalt so when I freed up the front droop, the car had way more steering.

As for carpet, use the single piece sus mounts and the motor mount connection piece. If you use traction compound, make sure it does not get on to the tire side wall. I see lots of people just loading them on like a glazed doughnut, making the sidewallls soft in the process. You want the sidewalls to be firm, so it won't roll under. I also heard that limiting droop is one of the most effective way to prevent traction rolls.
Tamiya is also coming out with a hard upper and lower deck (42232,42233) for high grip surfaces.

Vid of race. My car is the flr-red one. sorry about the crappy quality
+ YouTube Video
ERROR: If you can see this, then YouTube is down or you don't have Flash installed.
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Old 07-10-2012, 12:17 PM
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Hi , i need some help to understand how does the spacer here affect the car .
How can i see if i need to change the spacer ?
Any source to read some things about the setups ?
Attached Thumbnails Tamiya TRF417-images.jpeg  
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Old 07-10-2012, 01:27 PM
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Originally Posted by Akita
Hi , i need some help to understand how does the spacer here affect the car .
How can i see if i need to change the spacer ?
Any source to read some things about the setups ?
I use this
http://www.teamxray.com/teamxray/sho...p?file_id=2525
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Old 07-10-2012, 02:49 PM
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What is the name i am looking for in that book ?
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Old 07-10-2012, 04:28 PM
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Originally Posted by Akita
What is the name i am looking for in that book ?
If you have to ask then maybe you should consider reading the whole thing, but the section you're specially referring to is on page 27....
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Old 07-10-2012, 04:39 PM
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Originally Posted by Akita
Hi , i need some help to understand how does the spacer here affect the car .
How can i see if i need to change the spacer ?
Any source to read some things about the setups ?
For the circle in green, higher (more spacers) gives lower roll center, meaning it will roll more, which makes it less responsive and grip more.

On the opposite, lower (less spacers) gives higher roll center, meaning it will roll less, which makes it more responsive but may grip less.
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Old 07-10-2012, 05:44 PM
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Originally Posted by Qatmix
CVD's, They have been silent for a year, still no wear.. although I have never rebuilt them.
May be a good idea to rebuild them. Take them apart and clean with motor spray, wipe them off and blow with air compressor. Put some grease into the outdrive itself and on the barrel piece that the set screw and pin go through. Try using the Hudy graphite grease, it works wonders. I do this routine about every 3 race weekends. Sometimes more. I usually run in the super stock class (13.5 blinky) and never have chatter issues except when the cvd's need cleaned and greased. Hope this helps!!
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Old 07-11-2012, 01:19 AM
  #3450  
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Originally Posted by eComet
For the circle in green, higher (more spacers) gives lower roll center, meaning it will roll more, which makes it less responsive and grip more.

On the opposite, lower (less spacers) gives higher roll center, meaning it will roll less, which makes it more responsive but may grip less.
Actually the change to the roll centre is minimal, you notice the camber change much more which has the opposite effect - less spacers, more camber change, more grip, more aggressive
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