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Associated RC 12 R5.2

Old 01-20-2016, 08:14 AM
  #811  
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The rear ride height adjusters should work. The fronts are a different spacing so I don't believe they will. Reflex makes some nice ones for the RC12
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Old 01-21-2016, 03:04 AM
  #812  
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I need help piecing together my 12r5.2, I'm looking to just get it running and do all of the fine tuning later on.

I have a Trinity D4 3.5t Motor and do not know what pinion I should use with the supplied spur gear.

Purchased 4 set of Yokomo CRT tires only to find the rears do not fit this platform, I find the Yokomo tires the most aesthetically pleasing and would like to use them, will I be able to use Yokomo wheel hubs to mount them?
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Old 01-21-2016, 06:26 AM
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Originally Posted by Haruki View Post
I need help piecing together my 12r5.2, I'm looking to just get it running and do all of the fine tuning later on.

I have a Trinity D4 3.5t Motor and do not know what pinion I should use with the supplied spur gear.

Purchased 4 set of Yokomo CRT tires only to find the rears do not fit this platform, I find the Yokomo tires the most aesthetically pleasing and would like to use them, will I be able to use Yokomo wheel hubs to mount them?
Don't believe so, the AE pod isn't the right width/offset to accommodate the Yokomo hubs/axle. I can try it out, though, and report back.

With a 3.5t you will want somewhere around a 24-26t pinion, assuming the kit spur is somewhere around 90-96.
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Old 01-21-2016, 04:13 PM
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Here's my setup for my 12R25.2. This setup is meant for 21.5 2 cell, but I would say this would work for 17.5 and 13.5 motor 1s classes.
Not a whole lot has changed from the kit setup.

Running the battery transverse instead of inline.

Front End
Height 3.2 mm
Camber -1
Toe - 0
Dynamic Caster Block Position - 10 degree setting
Caster - Spacers are all back
Lower arm spacers - Associated 0.50 mm (Kit)
Upper Arm - 2 mm spacer
Front spring - 0.50 mm
Droop 0.5 mm
Spacers on top of upper link.
Custom made brace using o-ring dampening
No kingpin lube

Rear End

Height - 3.3 mm
Rear track width - 171.5 mm
Damper tubes - 20 K
Pod droop - 1.0 mm
Pod sag - 0 * 3.3 mm
Side springs - CRC 0.50 mm *just touching
Center damper -Team Prime damper
Center spring - Associated gold spring
Oil -Yokomo 650 cst
Rear damper height position - 2 mm shim
Front damper height position - custom

Servo links - straight
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Old 01-21-2016, 04:23 PM
  #815  
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Originally Posted by Haruki View Post
I need help piecing together my 12r5.2, I'm looking to just get it running and do all of the fine tuning later on.

I have a Trinity D4 3.5t Motor and do not know what pinion I should use with the supplied spur gear.

Purchased 4 set of Yokomo CRT tires only to find the rears do not fit this platform, I find the Yokomo tires the most aesthetically pleasing and would like to use them, will I be able to use Yokomo wheel hubs to mount them?
Haruki -LloydLoar is right, I am starting with a 96 spur (kit spur) and a 26 tooth pinion.

Also, if you like the Yokomo wheel look. The great thing is TN Racing makes the same style of wheel in many different colors for the Team Associated axle setup.

Go to their website at http://www2.odn.ne.jp/tnracing/top1.htm
Click on the Twelve tab on the left panel.
Scroll down the page to part number TN-954 to 957.
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Old 01-22-2016, 01:33 AM
  #816  
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Originally Posted by EDWARD2003 View Post
Haruki -LloydLoar is right, I am starting with a 96 spur (kit spur) and a 26 tooth pinion.

Also, if you like the Yokomo wheel look. The great thing is TN Racing makes the same style of wheel in many different colors for the Team Associated axle setup.

Go to their website at
Click on the Twelve tab on the left panel.
Scroll down the page to part number TN-954 to 957.
Thanks for the link? How can I purchase the wheels? There seems to be no option to add anything to a cart of some sort.

I'm having trouble keeping my side springs on the car, they just come off with too much motion.

Also, how tight should the plastic nut for the differential be?

Edit* The way my Trinity D4 3.5t mounts puts the motor wires either touching the rear axle or touching the chassis, is there any way I can change the orientation the motor mounts in?

Last edited by Haruki; 01-22-2016 at 04:03 AM.
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Old 01-22-2016, 04:21 AM
  #817  
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@ Haruki...

This video may be of help with your diff questions https://www.youtube.com/watch?v=bIYBed6VmNw
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Old 01-22-2016, 05:14 AM
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Originally Posted by NomadRacer View Post
@ Haruki...

This video may be of help with your diff questions
Thank you, that was very helpful.
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Old 01-22-2016, 06:03 AM
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Originally Posted by Haruki View Post
Thank you, that was very helpful.
Quick question - Is this your very first rc car?

Where do you live? Japan? America? Canada? Europe?

What car are you using? Yokomo, Associated? CRC?

What side springs are you using? Yokomo Associated, CRC?

You adjust the differential nut until the differential stops slipping.

If the motor wires are touching the rear axle, this means you've mounted the motor using the wrong motor screw holes. Don't worry, the Trinity motor has multiple holes to select from. I would rotate the motor so the wires are positioned so they are facing forwards. You'll have to test different hole positions on the motor to figure this out.

http://mtabe-blog.blogspot.jp/2012/07/112.html
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Old 01-22-2016, 01:59 PM
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Originally Posted by EDWARD2003 View Post
Quick question - Is this your very first rc car?

Where do you live? Japan? America? Canada? Europe?

What car are you using? Yokomo, Associated? CRC?

What side springs are you using? Yokomo Associated, CRC?

You adjust the differential nut until the differential stops slipping.

If the motor wires are touching the rear axle, this means you've mounted the motor using the wrong motor screw holes. Don't worry, the Trinity motor has multiple holes to select from. I would rotate the motor so the wires are positioned so they are facing forwards. You'll have to test different hole positions on the motor to figure this out.
This is my first 1/12 scale car, I have had 1/8 scale buggies and 1/10 scale touring cars since I was very young. I have been flying RC Helicopters at a competitive level, advanced cars like the 12R are new to me. The initial build is very similar to just about every Helicopter using a carbon fiber structure, The suspension system build and mechanical tuning is where I have difficulty at.

Everything I am using came from the Associated 12R5.2 Kit.

As for the mounting holes, the motor is quite limited with only 4 drilled holes and only 2 of which has proper spacing for this model.

*Fixed motor mounting situation, I took the motor apart and rotated the mounting holes to allow for safe wire routing.

Last edited by Haruki; 01-22-2016 at 02:29 PM.
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Old 01-22-2016, 02:34 PM
  #821  
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For the D4 you need to unscrew the three can bolts and rotate the front motor piece one to the left, you could also go right one left is my preference.
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Old 01-22-2016, 02:37 PM
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Pic for reference
Attached Thumbnails Associated RC 12 R5.2-1453502153265545839020.jpg  
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Old 01-22-2016, 02:41 PM
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Pic of d4 in car
Attached Thumbnails Associated RC 12 R5.2-1453502410563419863496.jpg  
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Old 01-22-2016, 11:11 PM
  #824  
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Originally Posted by Gravity Dodger View Post
For the D4 you need to unscrew the three can bolts and rotate the front motor piece one to the left, you could also go right one left is my preference.
Thanks, I ended up figuring that out after looking at it a bit more.
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Old 01-24-2016, 11:35 PM
  #825  
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My side springs are able to fall off the chassis at maximum rotation, is this normal?

Also, my front springs seem to require quite a bit of force from my hand to move them, I made sure the shaft was not binding on anything, is this also normal?

Last edited by Haruki; 01-24-2016 at 11:53 PM.
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