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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 01-14-2016, 06:12 AM   #376
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It looks like there is not a good way to upgrade from '14 to '16. Is that true? How much better is the '16 than the '14?

Also, I think I saw something that said not to use the small rubber seal on the diffs. Is that the general consensus?

Thanks.
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Old 01-14-2016, 06:17 AM   #377
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Default Shocks

Last year, i ran my shocks without the foam under the bladder because that was the only way I could get zero rebound. However, it seemed to leak more out of the vent hole. Are most running the shocks with the foam?
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Old 01-14-2016, 06:34 AM   #378
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Default Turnbuckles Adjustments

Unlike offroad, the inner turnbuckle mounts don't go up and down, it's just length and position. Does position do anything or is this basically just a turnbuckle length adjustment?
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Old 01-14-2016, 07:03 AM   #379
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Quote:
Originally Posted by qstorm777 View Post
It looks like there is not a good way to upgrade from '14 to '16. Is that true? How much better is the '16 than the '14?

Also, I think I saw something that said not to use the small rubber seal on the diffs. Is that the general consensus?

Thanks.
Yes, don't bother with it.

Quote:
Originally Posted by qstorm777 View Post
Last year, i ran my shocks without the foam under the bladder because that was the only way I could get zero rebound. However, it seemed to leak more out of the vent hole. Are most running the shocks with the foam?
I run without and don't get many leaks, check that the oil you've used hasn't made the bladders swell so they no longer seal properly.

Quote:
Originally Posted by qstorm777 View Post
Unlike offroad, the inner turnbuckle mounts don't go up and down, it's just length and position. Does position do anything or is this basically just a turnbuckle length adjustment?
The inner turnbuckles are adjusted by adding or removing shims under the ball end
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Old 01-14-2016, 08:31 AM   #380
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Originally Posted by Skiddins View Post
The inner turnbuckles are adjusted by adding or removing shims under the ball end
Thanks. I forgot about that. That's up and down roll center adjustment. On touring car, is shorter turnbuckle length more responsive and longer more stable?
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Old 01-14-2016, 08:35 AM   #381
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Originally Posted by qstorm777 View Post
Thanks. I forgot about that. That's up and down roll center adjustment. On touring car, is shorter turnbuckle length more responsive and longer more stable?
Correct
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Old 01-17-2016, 05:04 PM   #382
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Default Ackerman

More or less ackerman when trying to navigate 180s with touring car?
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Old 01-18-2016, 01:10 AM   #383
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Originally Posted by qstorm777 View Post
More or less ackerman when trying to navigate 180s with touring car?
Less Ackerman (more spacers) will improve mid to exit, especially on tight corners.

I find it makes the car less predictable though. I run 0mm everywhere outdoors
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Old 01-18-2016, 09:00 AM   #384
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Is there setup sheets online somewhere? Or a good starting point at least
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Old 01-18-2016, 09:30 AM   #385
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http://forum.teamxray.com/xsheets.php
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Old 01-18-2016, 10:23 AM   #386
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http://forum.teamxray.com/xsheets.php
Thank you
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Old 01-20-2016, 10:12 AM   #387
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Has someone any idea how they do this? Use the LRP 5600 LCG LiPo in mod!

The battery has 275g. Even when I use the LRP 6000 with 295g I have to add 60g to reach the 1350g. Now if using LCG I would have to add 80g! And the left/right balance is way off. I am using REDS motor/ESC combo and alu screws on top like most do. But the electric equipment should not have such a different weight of most other brands. OK tires can have different weight but the balance would be still off!
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Old 01-20-2016, 10:38 AM   #388
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Originally Posted by goin2drt View Post
Any one try the aluminum chassis yet? Which brand? I run on a high bite carpet track and would like to try one.
I run the AVID, and love it. huge difference on carpet.
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Old 01-20-2016, 10:50 AM   #389
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Originally Posted by Geberit View Post
Has someone any idea how they do this? Use the LRP 5600 LCG LiPo in mod!

The battery has 275g. Even when I use the LRP 6000 with 295g I have to add 60g to reach the 1350g. Now if using LCG I would have to add 80g! And the left/right balance is way off. I am using REDS motor/ESC combo and alu screws on top like most do. But the electric equipment should not have such a different weight of most other brands. OK tires can have different weight but the balance would be still off!
Well really 20g is not all that much. A LCG pack would allow you to put the extra weight needed to make minimum down low, and wherever you'd want it. Either way no matter what batteries/electronics I've used I'd always have to compensate more on one side to get equal L/R balance. Just the nature of the game.
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Old 01-20-2016, 11:11 AM   #390
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What does the alum chassis weight vs the carbon? Has to be the best way to add weight low...?
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