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Old 03-17-2017, 02:10 AM   -   Wikipost
R/C Tech Forums Thread Wiki: Xray T4 2016
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Last edit by: R Dodge
Welcome to the XRAY T4'16 Thread & Wikipost! Here you will find some useful info, tips and tricks as well as setups that are used by several team drivers. This wikipost is a work in progress and should continue to develop over time.

Tips & Tricks:

Alex Hagberg's Tech Tip Tuesday articles

How to mount your Protoform LTC-R Body
Setting static camber
How to mount weight on your chassis Part1
How to mount the rear wing on Protoform bodies
Simple troubleshooting guide
How to mount the battery on your chassis
How to glue your front tires for CRC Black carpet with Eric Anderson
Utilizing Exponential and RMode on the M12S
How to mount weight on your chassis Part2

Team driver Tim Wahl posted some very useful tips on Facebook as he worked through building a new kit.

1- Carbon Parts
2-Suspension
3-Solid Axle and Differential
4-Bulkheads & Drivetrain
5-Driveshaft (ECS & CVD)
6-Front & Rear Suspension
7-Tweak
8-Anti-Roll Bar
9-Battery Fix (OPTIONAL)
10-Bumper & Body
11-Shocks
12-Steering

New Graphite Hubs:
Xray have recently released some additional Graphite hubs for the T4 lineup. The 4° Graphite C-Hub has been out for some time and is known to improve steering on entry, and in general makes the car turn better. This has been the go-to c-hub on asphalt for many on the Xray team, though it is not needed on high bite carpet. The Graphite rear hub tends to make the car more stable, especially on corner entry. We are still working on gathering input on the new Graphite steering block, but for the moment feel that it should improve steering response. All Graphite parts are approximately 1g lighter than the Hard or Medium options.

Option Parts to consider:
XRA301196 T4 Graphite Upper Deck 1.6mm V2
XRA301226 Foam Bumper – Hard - highly recommend
XRA302165 Composite Front Suspension Arm 2-Hole – Hard
XRA302169 Composite Front Suspension Arm 1-Hole – Graphite
XRA302803 1.3mm Front Anti-Roll Bar
XRA303169 Composite Rear Suspension Arm 1-Hole – Graphite
XRA303802 1.2mm Rear Anti-Roll Bar
XRA305137 Steel Solid Axle Driveshaft Adapters - HUDY Spring Steel - highly recommend
XRA305242 Composite Drive Shaft Replacement Cap 3.5mm – Orange – Strong (QTY 4)
XRA305351 Aluminum Wheel Hub – Offset “-0.75mm” – Black (QTY 2)
XRA306191 T4 Graphite + Aluminum Fully Adjustable Battery Holder
XRA308264 4S Spring-Set Progressive C=2.5-2.8 (QTY 2)
XRA308276 4S Spring-Set C=2.7 (QTY 2)
XRA308286 4S Spring-Set C=2.6 (QTY 2)
Specific to Asphalt:
XRA302383 Composite C-Hub Right – 4* - Graphite (ECS)
XRA302384 Composite C-Hub Left – 4* - Graphite (ECS)
XRA308039 Aluminum Progressive Shock System – Set (QTY 2)

Specific to Carpet:

XRA301141 T4 Aluminum Flex Chassis 2mm
XRA302375 Composite C-Hub Right – 6* - Hard ***Modification may be required if they don't have the "ECS" stamp.

XRA302376 Composite C-Hub Left – 6* - Hard ***Modification may be required if they don't have the "ECS" stamp.

XRA303711-O Aluminum Rear Lower Suspension Holder – Front – RF
Recent Setups:
3 July 2016 - Alex Hagberg - European Championship - Asphalt - Mod - 2nd
3 July 2016 - Bruno Coelho - European Championship - Asphalt - Mod - 4th
3 July 2016 - Jan Ratheisky - European Championship - Asphalt - 13.5 - TQ + Win

29 June 2016 - Max Kuenning - Reedy - Asphalt - Mod - 4th
29 June 2016 - Keith Yu - Reedy - Asphalt - 13.5 - TQ + 2nd
29 June 2016 - Eric Anderson - Reedy - Asphalt - 13.5 - 3rd

15 May 2016 - Bruno Coelho - ETS Rd 4 Riccione - Asphalt - Mod - TQ + Win
15 May 2016 - Mattia Collina - ETS Rd 4 Riccione - Asphalt - 13.5 - Win

17 April 2016 - Max Kuenning - MHIC - Carpet - Mod - 4th

10 April 2016 - Bruno Coelho - ETS Rd 3 Wels - Carpet - Mod - 2nd
10 April 2016 - Alex Hagberg - ETS Rd 3 Wels - Carpet - Mod - 4th
10 April 2016 - Jan Ratheisky - ETS Rd 3 Wels - Carpet - 13.5 - TQ + Win

22 March 2016 - Paul LeMieux - Canadian Nats - Carpet - Mod - TQ + Win
22 March 2016 - Luke Pittman - Canadian Nats - Carpet - Mod - 3rd

6 March 2016 - Chris Adams - ROAR Nats - Carpet - Mod - TQ + Win
6 March 2016 - Craig Xavier - ROAR Nats - Carpet - 17.5 - 4th
6 March 2016 - Eric Anderson - ROAR Nats - Carpet - 17.5 - 5th

6 February 2016 - Bruno Coelho - ETS Rd 2 Koblenz - Carpet - Mod - TQ + Win
6 February 2016 - Alex Hagberg - ETS Rd 2 Koblenz - Carpet - Mod - 2nd

31 January 2016 - Alex Hagberg - Snowbirds - Carpet - Mod - TQ + Win
31 January 2016 - Jan Ratheisky - Snowbirds - Carpet - All - See Comments
31 January 2016 - Drew Ellis - Snowbirds - Carpet - 13.5 - 4th
31 January 2016 - Robbie Dodge - Snowbirds - Carpet - 17.5 - Win

13 December 2015 - Bruno Coelho - ETS Rd 1 Hrotovice - Carpet - Mod - 3rd
13 December 2015 - Alex Hagberg - ETS Rd 1 Hrotovice - Carpet - Mod - 4th
13 December 2015 - Olly Jeffries - ETS Rd 1 Hrotovice - Carpet - Mod - 7th
13 December 2015 - Jan Ratheisky - ETS Rd 1 Hrotovice - Carpet - 13.5 - TQ + Win

29 November 2015 - Paul LeMieux - US Indoor Champs - Carpet - Mod - TQ + Win

25 October 2015 - Eric Anderson - Stock Wars - Carpet - 17.5 - 2nd

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Old 04-27-2016, 01:05 AM   #706
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Hold the spool and push the spur gear toward the front to make the belt taught on he underside and check - that's what is happening under load and will give a better indication of any interference.
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Old 04-27-2016, 07:57 AM   #707
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Quote:
Originally Posted by teddymp9 View Post
Hi, I have a 2016 T4 and try to install the aluminum steering Arm but after installed, the steering ball joint will hit the belt ? So I took it out and try to see what's the difference of the plastic arm, it seem the plastic arm is sit more higher than the aluminum arm. Do you guys have this problem ? Did you guys just leave it like this or how can it be fix . Thx
It will rub if you run your belts loose. I grind the bottom of those tie rod ends flat on the bottom and it doesnt rub any longer. Slight annoyance but I actually never noticed any side affects of the belt rubbing slightly. Didnt see it until I was rebuilding my car before a race and noticed the shinny spot on the plastic.


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Old 04-27-2016, 08:39 AM   #708
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Thanks for the answer .
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Old 04-27-2016, 09:14 AM   #709
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Originally Posted by EAMotorsports View Post
It will rub if you run your belts loose. I grind the bottom of those tie rod ends flat on the bottom and it doesnt rub any longer. Slight annoyance but I actually never noticed any side affects of the belt rubbing slightly. Didnt see it until I was rebuilding my car before a race and noticed the shinny spot on the plastic.


EA
EA, I run 13.5 and 17.5 and my belts are set as loose as possible.
is it bad if I raise the duel steering horn posts with 1mm shim? I think this will change the steering assemblies geometry slightly,I am not sure if this affect Handling or not.
I do think the servo travel less to full lock if I do so, which can be a good thing.
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Old 04-27-2016, 09:18 AM   #710
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Originally Posted by yifuqiao View Post
EA, I run 13.5 and 17.5 and my belts are set as loose as possible.
is it bad if I raise the duel steering horn posts with 1mm shim? I think this will change the steering assemblies geometry slightly,I am not sure if this affect Handling or not.
I do think the servo travel less to full lock if I do so, which can be a good thing.
That's fine to do, if desired. Make sure to remove 1mm from your bump steer shims, and you'll probably want to use something less that the 6mm shim in the center mount, or the steering link will hit the top deck.


If you plan on running the stiffener that attaches to the top deck, you'll need to adjust that shim as well.
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Old 04-27-2016, 09:33 AM   #711
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Originally Posted by erchn View Post
That's fine to do, if desired. Make sure to remove 1mm from your bump steer shims, and you'll probably want to use something less that the 6mm shim in the center mount, or the steering link will hit the top deck.


If you plan on running the stiffener that attaches to the top deck, you'll need to adjust that shim as well.
Thanks! I raised my top deck by 1mm, so I think they don't touch from what I can tell with the kit setup.
But I almost forgot the bump steer shim. Thanks for the tips!
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Old 04-29-2016, 03:17 AM   #712
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Does anyone have any experience with the Radtec aluminium chassis?

Looking for a aluchassis, was looking at xray flex and avid, but just saw Radtec, havent heard or read anything about their products before.
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Old 04-29-2016, 04:21 AM   #713
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Does anyone have any experience with the Radtec aluminium chassis?

Looking for a aluchassis, was looking at xray flex and avid, but just saw Radtec, havent heard or read anything about their products before.
I do not, nor does anyone I know from the U.S. I'm sure someone has tested it though.

Can't go wrong with Avid or Xray Flex. Those are my top 2 choices for carpet racing.
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Old 04-29-2016, 05:07 AM   #714
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Originally Posted by R Dodge View Post
I do not, nor does anyone I know from the U.S. I'm sure someone has tested it though.

Can't go wrong with Avid or Xray Flex. Those are my top 2 choices for carpet racing.
Xray flex even for the new CRC carpet? Been looking for the stiff Xray aluminum chassis for ages but can only find the flex chassis.
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Old 04-29-2016, 05:12 AM   #715
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Xray flex even for the new CRC carpet? Been looking for the stiff Xray aluminum chassis for ages but can only find the flex chassis.
Yes, I ran the Avid chassis at Snowbirds and EA ran the Xray Flex chassis there. I've never really liked the solid chassis personally, but Paul made it work just fine at Stock Wars. Just comes down to personal preference I guess. I can see the solid chassis being good on the new carpet, just not my go-to.
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Old 04-29-2016, 01:48 PM   #716
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Alex ran the flex chassis with the 1.6 mm upper deck at the snow birds.
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Old 04-29-2016, 02:42 PM   #717
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Hi,has anyone made suspension inserting blocks just like the xray 0.5 increments ones,but in 0.25 increments,so you can ,say 2.75,or 2.25 rear toe in,so on.
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Old 04-30-2016, 01:16 AM   #718
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Hi,has anyone made suspension inserting blocks just like the xray 0.5 increments ones,but in 0.25 increments,so you can ,say 2.75,or 2.25 rear toe in,so on.
Roche did a 0.25 block, not sure if they are still available.

http://www.redrc.net/2014/07/roche-t...ension-mounts/
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Old 04-30-2016, 06:41 AM   #719
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Originally Posted by daleburr View Post
Roche did a 0.25 block, not sure if they are still available.

http://www.redrc.net/2014/07/roche-t...ension-mounts/
This Roche part now has a new part # under Radtec XR-10018
http://shop.rochercusa.com/index.php...&product_id=86
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Old 05-01-2016, 12:59 AM   #720
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ARS & PSS
What scenarios would I use each one??
And would you use them together??

And I know you don't change your oil on the PSS what about springs??
Would you run standard springs or progressive springs (or would that defeat the purpose)
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