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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 12-19-2016, 12:48 PM
  #136  
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Originally Posted by Zerodefect View Post
When you drag a #11 exacto blade across plastic is scores a line into the plastic, but the plastic on each side of the line raises up. That removes play, and still has very little friction.

Like dragging a stick across sand. It's deeper in the middle, but taller at the sides.

Sorry newbie, pics
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Old 12-20-2016, 06:25 AM
  #137  
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im new to 1/12 pan car. have only done off road SCT and 1/8 buggy. i just picked up a 2016 X12 roller last week. are there any good resource on what i need to compete the setup?

local club run 13.5T motor, so i'm thinking Reedy Sonic 540-M3 1S 13.5T
for esc, im thinking SkyRC TORO 1S120
for servo, SAVOX SV-1257MG. what servo saver to use?

what are some of the pinion gears i should get to start out with.

im not looking to be super competitive. just want to have some fun with it. i read this whole post and saw some of the weakness and fixes for the 2016 chassis. i assume the previous owner probably took care most of those issues.
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Old 12-22-2016, 08:30 PM
  #138  
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Anyone know where I can get a xray black center spring (2.1)? Everywhere I am looking they are out of stock....
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Old 12-22-2016, 09:01 PM
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what is a good servo to use x12 17 ? thanks
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Old 12-23-2016, 05:07 AM
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Originally Posted by Customworksking View Post
what is a good servo to use x12 17 ? thanks
I really like the KO-ProPo RSX 12
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Old 12-23-2016, 02:12 PM
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starting point 13.5 gearing 76 spur
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Old 12-23-2016, 07:47 PM
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i use the futaba 671svi in 12th
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Old 12-23-2016, 08:31 PM
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Originally Posted by Customworksking View Post
starting point 13.5 gearing 76 spur
You'll want to be around an 85mm rollout to start.
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Old 12-24-2016, 07:59 AM
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what's a good starting rollout for 13.5T and 96T spur
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Old 12-24-2016, 09:48 AM
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Originally Posted by trackjunky View Post
what's a good starting rollout for 13.5T and 96T spur
I would start 80/49, good start.
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Old 12-24-2016, 12:19 PM
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Originally Posted by jmoneym View Post
I would start 80/49, good start.
are those spur and pinion numbers?

i'm using this roll out chart.
carsrcracing.co.uk/wp-content/uploads/rolloutcharts.pdf

i also found this android app
play.google.com/store/apps/details?id=bugblndr.rcratio.free&hl=en


Last edited by trackjunky; 12-24-2016 at 12:33 PM.
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Old 12-24-2016, 03:27 PM
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Originally Posted by trackjunky View Post
are those spur and pinion numbers?

...
Yes that would be Pinion/Spur. The 96 you mentioned earlier is WAY TOO big. Stock, 17.5 is around a 70-73 tooth range, Superstock up to about an 80, Mod most run 92-94. At preferred tire size I don't think a 96 will even fit.
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Old 12-24-2016, 06:33 PM
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did i make a mistake i didn't get a hv servo been so long since i ran 1/12 lmk ty
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Old 12-24-2016, 07:03 PM
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Originally Posted by miller tyme View Post
Yes that would be Pinion/Spur. The 96 you mentioned earlier is WAY TOO big. Stock, 17.5 is around a 70-73 tooth range, Superstock up to about an 80, Mod most run 92-94. At preferred tire size I don't think a 96 will even fit.
got it. yeah the used car i got came with 96T and the spur stick bellow the chassis. and with 43 mm tires on, the spur gear is about 2mm off the ground. too low i think. i'll get the 80T spur.

Last edited by trackjunky; 12-24-2016 at 07:16 PM.
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Old 12-26-2016, 10:46 PM
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Originally Posted by kansasracer View Post
Anyone know where I can get a xray black center spring (2.1)? Everywhere I am looking they are out of stock....
Looks like Stormer Hobbies has one in stock!

https://shop.stormerhobbies.com/product-p/xra378094.htm
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