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XRAY X12 2017 1/12 Pan Car

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Old 03-17-2017, 02:50 AM   -   Wikipost
R/C Tech ForumsThread Wiki: XRAY X12 2017 1/12 Pan Car
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Welcome to the XRAY X12'17 Thread & Wikipost! Here you will find some useful info, tips and tricks as well as setups that are used by several team drivers. Many of us run the X12'17 on high bite carpet and with most US tracks going to the new black CRC carpet, most setups from here out will be developed for those high bite conditions.

Tips & Tricks:
Some racers notice slop developed in the front end over time. One method to reduce/remove this, as pointed out by some of our friends in Europe is to score the inside of the plastic front pivot ball (where the kingpin goes through) with a sharp xacto blade. Usually 4 scores at 12, 3, 6 and 9 will do. Alternative options can be found listed below.

As with any 1/12 pan car, a smooth operating suspension is critical to performance. It is recommended to polish your kingpins & hinge pins using a dremel or a drill and some sort of polish (IE Gravity polish or Mothers Aluminum polish will work). If you find that your suspension has a bind, you may look at using a reamer or drillbit to make sure the holes are clear of any flashing or debris. The only place this may happen is at the upper hingepin, which is 2mm dia.

For stock racing we usually find ourselves looking for a little more steering. One trick that some of the stock drivers have done that seems to help is lowering the graphite plate that the servo & shock mount to. To do this, you will need the 17mm standoffs from VBC and the servo mounts from the 2015 or earlier X12. Be careful that the servo mounts do not sit crooked on the plate when attaching it; a 0.2-0.5mm shim will help ensure it sits perfect on the graphite plate. Part numbers can be found below.

Option Parts to consider:
XRA371220 X12 Foam Bumper
XRA372012 Composite Front Upper Arm Mount Right Graphite

XRA372022 Composite Front Upper Arm Mount Left Graphite

XRA372113 Composite Suspension Arm Front Lower Right Graphite

XRA372123 Composite Suspension Arm Front Lower Left Graphite
XRA372177
Spring 4.75 Coils 3.6x6x0.45mm, C=2.0 - Silver (Soft) (2)
XRA372178
Spring 4.05 Coils 3.6x6x0.45mm, C=2.5 - Black (Soft) (2)
XRA373584 Side Spring C=0.6 - Silver (2)
XRA373586 Side Spring C=1.2 - Black (2)
XRA375010 Graphite Rear Axle Shaft - highly recommended
XRA378094 Shock Spring C=2.1 Black

Lowered Graphite Plate:
B-02-VBC5005
XRA376255-O Alu Servo Mount - Orange (2)

Front end options:
ASC4403 Kingpins, 1:12 Scale
ASC4622 Upper Arm Eyelets

ASC4626 Upper Arm Mounts/Steering Blocks
ASC4627 Front Axles
ASC8417 Pivot Balls

Aluminum Chassis:
Max.FX Aluminum Chassis
McFactory Motorsports
Reflex/RSD

Recent Setups:
Alexander Hagberg - Snowbird Nationals - Mod - High Bite
Craig Xavier - Snowbird Nationals - 17.5 - High Bite
Robbie Dodge - Snowbird Nationals - 17.5 - High Bite
Eric Anderson - ROAR Carpet Nationals - 13.5 High Bite

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Old 09-23-2017, 01:44 PM
  #241  
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I have an idea Dave. I'll draw it up for you asap.
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Old 10-03-2017, 03:34 AM
  #242  
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Hi guys
I removed most of the play in the front end fixing the steering block in the kingpin with m3 little screw and using mugen ball and eyelet, now I have zero camber play, but I have too much up and down play coming from lower suspension. How can I reduce it ? I'm thinking to fix with a screw the ball to suspension, the kingpin will rotate into the ball, no the ball into suspension, but should be free enough. Suggestions?
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Old 10-04-2017, 04:19 PM
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I just assembled my 2017 kit (got one for cheap after the 2018 release ), and got the chance to hit the track for the first time in ~10 years.

Going down the straights, I realized my car was pulling to the left at high speeds, but not at low speeds (steering trim was perfectly zero'ed).

Looking at the rear axle more carefully, I noticed it is not centered.The right side of the car (passenger side) wheel sticks out further than the left side wheel. I have confirmed this my measuring to the center pod hole. Each side has a single 1mm shim for track width, and the rear end is built exactly how the manual states.

Does anyone know what is going on?! Perhaps I have the wrong left/right hub? I am at a loss...


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Old 10-04-2017, 04:50 PM
  #244  
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I figured it out.

My 2017 Manual shows 1mm spacer on each side (not the 6mm difference needed between each side).

The 2017 Manual on Xray's website is correct and shows this.

The 2018 Manual on Xray's website is correct and shows this. (Although the 2018 car now has a single 6mm wide spacer instead of multiple smaller ones.)

So it looks like there is an error in my manual that was later corrected. Hopefully this can help others in need.
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Old 10-06-2017, 06:14 PM
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I found the same thing, my car would sort of traction roll on one side, I changed a few things but it still was there, then when I was upgrading to the alum chassis I saw it as clear as day. I pulled out my calibers and measured, good thing I had axle spacers to shim it out. should be a lot better now.
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Old 10-07-2017, 11:14 PM
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Anyone have the 18, i'm curious how much better it is.

I just put the alum chassis on with the graphite axle. I have no slop in the front end like everyone describes and my car is on point.
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Old 10-08-2017, 02:11 AM
  #247  
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i ended up with 6mil worth of shims on the left rear, just one thin one on the right
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Old 01-24-2018, 05:23 PM
  #248  
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Rear spacing was incorrect on my 2017. Aside from making sure the spacing is correct it’s also worth experimenting with your track width front and rear. Impacts how the car rotates.
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Old 03-02-2018, 04:14 AM
  #249  
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Just building this as my first onroad car (got it as a trade for one of offroad buggies).

Not much of a racing scene for these here in Sydney so just looking to set it up for fun.

Any recommendations for a new road driver on motor? 17.5t, 21.5t, 13.5t?

Also i notice it looks like 1s is the norm for these?
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Old 03-02-2018, 12:34 PM
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Originally Posted by Maraach View Post
Just building this as my first onroad car (got it as a trade for one of offroad buggies).

Not much of a racing scene for these here in Sydney so just looking to set it up for fun.

Any recommendations for a new road driver on motor? 17.5t, 21.5t, 13.5t?

Also i notice it looks like 1s is the norm for these?
17.5, and correct, 1s.
Sorry, I'm away from home, otherwise I'd also recommend gearing. Any idea what tire diameter you are starting with?
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Old 03-02-2018, 05:36 PM
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Originally Posted by simple View Post
17.5, and correct, 1s.
Sorry, I'm away from home, otherwise I'd also recommend gearing. Any idea what tire diameter you are starting with?
Actually after any advice you guys can offer . Literally have no idea. Asphalt courses here mainly, i believe that makes a difference?

Also it makes reference to using a pan car servo but doesnt specify specs.. im assuming high speed low torque?
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Old 03-02-2018, 09:26 PM
  #252  
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Originally Posted by Maraach View Post
Actually after any advice you guys can offer . Literally have no idea. Asphalt courses here mainly, i believe that makes a difference?

Also it makes reference to using a pan car servo but doesnt specify specs.. im assuming high speed low torque?
The new spec 12th in Aus is now 13.5 blinky.
!2th in Sydney has died a lot since the Carpet track closed a few years ago. only really club scene is Newcastle or Canberra. they come out of the wood work for major events like NSW Titles.

Also get your self some Ulti J compound Hard Fronts and Soft rears as thats what most run at the tracks around NSW.
http://www.essentialrc.com.au/store/...h8p8jcr0n6f8c6

http://www.essentialrc.com.au/store/...h8p8jcr0n6f8c6

12th servo
RC Market

http://www.essentialrc.com.au/store/...roducts_id=684
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Old 03-02-2018, 11:17 PM
  #253  
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Originally Posted by Hugh Jazz View Post
The new spec 12th in Aus is now 13.5 blinky.
!2th in Sydney has died a lot since the Carpet track closed a few years ago. only really club scene is Newcastle or Canberra. they come out of the wood work for major events like NSW Titles.

Also get your self some Ulti J compound Hard Fronts and Soft rears as thats what most run at the tracks around NSW.
ULTI 1/12th Tyres - Hard Asphalt (Front) [12FJH] - $10.70 : Essential RC

ULTI 1/12th Tyres - Soft Asphalt (Rear) [12RJS] - $12.20 : Essential RC

12th servo
RC Market

KO Propo RSx-12 World Spec 1/12th Digital Servo [KO-30115] - $119.00 : Essential RC
superstar! thank you
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Old 03-03-2018, 03:36 AM
  #254  
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Originally Posted by Hugh Jazz View Post
The new spec 12th in Aus is now 13.5 blinky.
!2th in Sydney has died a lot since the Carpet track closed a few years ago. only really club scene is Newcastle or Canberra. they come out of the wood work for major events like NSW Titles.

Also get your self some Ulti J compound Hard Fronts and Soft rears as thats what most run at the tracks around NSW.
ULTI 1/12th Tyres - Hard Asphalt (Front) [12FJH] - $10.70 : Essential RC

ULTI 1/12th Tyres - Soft Asphalt (Rear) [12RJS] - $12.20 : Essential RC

12th servo
RC Market

KO Propo RSx-12 World Spec 1/12th Digital Servo [KO-30115] - $119.00 : Essential RC
Any recommendation on gearing? 50/76?

Last edited by Maraach; 03-03-2018 at 12:38 PM.
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Old 03-03-2018, 08:43 PM
  #255  
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50/76 is good for 17.5...rollout of about 81-83 w tires at about 41 to 42mm. Depends on motor of course.
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