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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 10-11-2016, 02:45 AM
  #76  
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Originally Posted by truggy100 View Post
thanks guys for all the advise

I put for now some extra shims under the arm

how you find whats the good tire diameter ????
It will be something you need to test to determine what feels best to you for your track conditions. Generally when the track has less bite, you will want a larger tire to help generate more grip. When the track has a lot of bite, smaller tires will always be faster.
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Old 10-11-2016, 12:55 PM
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Originally Posted by Skiddins View Post
Looks like they're IRS. I've had mine a few years.

http://www.actionmodelcentre.com/pro...?prod=IRS-3020
Thanks for the link,out of stock,oh well
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Old 10-11-2016, 01:47 PM
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Originally Posted by X marksthespot View Post
Thanks for the link,out of stock,oh well
His website never used to even say if he had stock.
Must confess if I want something from them I always phone first otherwise it will end up on back order for as long as it takes.
Had stuff turn up before that I'd forgotten I'd even ordered
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Old 10-11-2016, 04:37 PM
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Originally Posted by X marksthespot View Post
Thanks for the link,out of stock,oh well
Plenty of other places to buy if you search for the p/n on Google!
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Old 10-11-2016, 04:47 PM
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Originally Posted by fenton06 View Post
Plenty of other places to buy if you search for the p/n on Google!
Why not these?http://www.googleadservices.com/page...Qww8IIA&adurl=
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Old 10-11-2016, 05:36 PM
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The hudy set is nice,I want the rounded bottom for more of a precise balance that comes with the chassis pivot type.
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Old 10-11-2016, 05:39 PM
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Originally Posted by Skiddins View Post
His website never used to even say if he had stock.
Must confess if I want something from them I always phone first otherwise it will end up on back order for as long as it takes.
Had stuff turn up before that I'd forgotten I'd even ordered
Yeah,I did that ,parts came today from crc and had a box sitting on my front steps.I was like oh yeah my springs and spares for my car
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Old 10-12-2016, 01:23 AM
  #83  
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Originally Posted by haywood View Post
When I've tried the pins in the past I found that they could stick a little. The 'Weeble' balancers have a tiny flat spot on the bottom, and just a couple of grams can make it tip.

Originally Posted by X marksthespot View Post
The hudy set is nice,I want the rounded bottom for more of a precise balance that comes with the chassis pivot type.
This
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Old 10-12-2016, 02:16 AM
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I've used the IRS ball type balance pins before and did not like them at all. I found that the bottom had a bit of a flat spot that did not allow the car to lean left/right as I wanted. Also the pin was too small and moved around in the balance holes in the chassis which seemed super inconsistent to me. The Hudy style fills the hole completely since it is tapered, and is more consistent IMO.

Personal preference I guess.
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Old 10-12-2016, 06:23 AM
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Originally Posted by R Dodge View Post
I've used the IRS ball type balance pins before and did not like them at all. I found that the bottom had a bit of a flat spot that did not allow the car to lean left/right as I wanted. Also the pin was too small and moved around in the balance holes in the chassis which seemed super inconsistent to me. The Hudy style fills the hole completely since it is tapered, and is more consistent IMO.

Personal preference I guess.
Didnt really check out the irs kit in person,used my hudy kit and I never could get the car to pivot on them nice and free.The car is balanced with the hudy kit and seems fine.Thanks for the help, will check em further before I order them
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Old 10-19-2016, 08:58 PM
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what is the highest ride height you can get with no shims under arms and 40mm tires? i generally run 3.8-4mm and was curious if the x12 would allow that with 40mm times.
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Old 10-19-2016, 10:46 PM
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My car with
0.8mm shims, new Xenon springs and 40.6mm tyres is at 3.3mm. So should be over 4mm with no shims. I've just switched to these springs as the soft xray ones would collapse after a couple of meetings.
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Old 10-20-2016, 12:16 AM
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Originally Posted by haywood View Post
Here is a picture of my buddies 2017 build in progress. As far as the slop in the front end goes you can eliminate it by using a combination of Xenon or Associated parts.
can you tell me what parts you use ?

thanks
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Old 10-20-2016, 01:24 AM
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Originally Posted by truggy100 View Post
can you tell me what parts you use ?

thanks
For AE parts, most use:
ASC4403 Kingpins, 1:12 Scale
ASC4622 Upper Arm Eyelets
ASC4626 Upper Arm Mounts/Steering Blocks
ASC4627 Front Axles
ASC8417 Pivot Balls

After building the kit front end on the '17 and comparing on the bench to my trusty old front end with AE parts, they feel nearly identical. Hoping to get some track time to test the 2 back to back soon.
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Old 10-20-2016, 03:28 AM
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Originally Posted by R Dodge View Post
For AE parts, most use:
ASC4403 Kingpins, 1:12 Scale
ASC4622 Upper Arm Eyelets
ASC4626 Upper Arm Mounts/Steering Blocks
ASC4627 Front Axles
ASC8417 Pivot Balls

After building the kit front end on the '17 and comparing on the bench to my trusty old front end with AE parts, they feel nearly identical. Hoping to get some track time to test the 2 back to back soon.
That's good to hear. After building my X12'17 as my first 12thalf, to me the level of play seemed fine, not to much, but not to tight either.
Been very happy with the first runs. Running mod on asphalt... and it's probably been the most painless runs I've ever had with a new car! Only been practising driving atm, not too concerned with laptimes (and the pt isn't working ), as it's still not fully up to race ready yet. Running out of packet tyres until I can get my hands on truer, and have a 2s speedy with an rx pack (yes they still exist)... but like I said, it's been painless!
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