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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 02-10-2016, 11:14 AM   #466
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Does anybody know anywhere that has (preferably Xray brand) aluminum non flex chassis in stock? I've looked everywhere but can't find anybody that has one.
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Old 02-10-2016, 11:47 AM   #467
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Can someone please explain the reasoning why none of the drivers in the MOD class do not use a motor fan in their ETS cars?
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Old 02-10-2016, 11:59 AM   #468
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more than likely because they aren't using any mechanical timing on the end bell like in spec classes.
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Old 02-10-2016, 12:19 PM   #469
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Originally Posted by astgerma52sp View Post
Can someone please explain the reasoning why none of the drivers in the MOD class do not use a motor fan in their ETS cars?
Probably because they are indoors right now. When temperatures rise and they are outdoors it will be more necessary.
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Old 02-10-2016, 12:26 PM   #470
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Originally Posted by astgerma52sp View Post
Can someone please explain the reasoning why none of the drivers in the MOD class do not use a motor fan in their ETS cars?
Not terribly necessary on carpet.

I usually have one in my car, but it's more just for weight. I figure I may as well make the weight useful rather than just stick on another 1 or 2 chunks of tungsten.
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Old 02-10-2016, 12:27 PM   #471
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Quote:
Originally Posted by RobS View Post
Does anybody know anywhere that has (preferably Xray brand) aluminum non flex chassis in stock? I've looked everywhere but can't find anybody that has one.
You and a whole lot of others. They've been backordered for a while now.
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Old 02-10-2016, 08:15 PM   #472
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What body is the go to for running on the new crc carpet? Mazda 6 or ltc-r ?
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Old 02-10-2016, 08:37 PM   #473
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hey, guys, I am putting the my t4 on the setup station right now.
I found that the servo mount carbon fiber piece is slightly bent.
I tried to loose everything and re-tight the servo, it still looks slightly bent, is this normal?
I think my servo(protea 160ss) is perfectly fine, it works well on both trf 419 and spec r r1.
also, this results the servo outer side slightly touching the chassis, is this also normal?
I think they might have designed it to be this way...

I guess I am just not a fan of this servo mount.
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Old 02-10-2016, 08:42 PM   #474
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Quote:
Originally Posted by yifuqiao View Post
hey, guys, I am putting the my t4 on the setup station right now.
I found that the servo mount carbon fiber piece is slightly bent.
I tried to loose everything and re-tight the servo, it still looks slightly bent, is this normal?
I think my servo(protea 160ss) is perfectly fine, it works well on both trf 419 and spec r r1.
also, this results the servo outer side slightly touching the chassis, is this also normal?
I think they might have designed it to be this way...

I guess I am just not a fan of this servo mount.
Have you taken it off and checked to see if it is truly bent? There is enough room for adjusting my servo up and down or crooked in the servo mount especially if the screws come loose.
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Old 02-10-2016, 09:01 PM   #475
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Quote:
Originally Posted by SDVern View Post
Have you taken it off and checked to see if it is truly bent? There is enough room for adjusting my servo up and down or crooked in the servo mount especially if the screws come loose.
I am not lying man, if I see my servo from the front of the car,
it looks like this:


I think in my case, the carbon fiber piece is a little too long.
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Old 02-10-2016, 09:04 PM   #476
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Quote:
Originally Posted by yifuqiao View Post
I am not lying man, if I see my servo from the front of the car,
it looks like this:


I think in my case, the carbon fiber piece is a little too long.
Take an actual picture, it could just be a defective piece.
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Old 02-10-2016, 11:43 PM   #477
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Quote:
Originally Posted by RobS View Post
Does anybody know anywhere that has (preferably Xray brand) aluminum non flex chassis in stock? I've looked everywhere but can't find anybody that has one.
http://www.rcdisco.com/part-info.php?partNo=XR301140

http://www.rccarshop.co.uk/spares/te...wiss-7075-t6-p

http://www.wheelspinmodels.co.uk/i/240513/

http://www.ebay.co.uk/itm/XRay-T416-...-/272080272114

all will ship worldwide
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Old 02-11-2016, 01:37 AM   #478
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Quote:
Originally Posted by 303slowdown View Post
What body is the go to for running on the new crc carpet? Mazda 6 or ltc-r ?
That's kind of hard to say right now. I ran the MazdaSpeed6 at Snowbirds, which is the only time I've been on the new carpet, and it went pretty well however most of the Xray guys there were using the LTC-R, including EA, Drew, Xavier, Ralph and Alex. Sam Isaacs has been doing really well on the new carpet with the MS6 & Nazda2 - He won US Indoor Champs with the MS6 and just recently won the Hudy Race with the N2, both events were on the new carpet.
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Old 02-11-2016, 01:42 AM   #479
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Default Asphalt Setup help

Im using asphalt stock setup on t4'16, but need more steering in 180deg hairpins and have slight oversteer in High speed sweepers.

Any ideas?
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Old 02-11-2016, 04:44 AM   #480
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Quote:
Originally Posted by Mr. MR4 View Post
Im using asphalt stock setup on t4'16, but need more steering in 180deg hairpins and have slight oversteer in High speed sweepers.

Any ideas?
The first thing to change are the springs; 2.5 are too soft for asphalt unless you're running in a very slow class. 2.7 are the standard outside. That will liven it up in the slow corners and should make it more stable through the fast stuff by reducing roll/grounding.

You can also drop to a 1.3 front roll bar, that normally gives more low-speed steering without increasing the high-speed steering.

If traction is good you can fit the layshaft/topdeck screws, which I see are removed on the kit setup. This normally takes off some high-speed steering and improves direction change through tight corners. But does cost some overall grip and makes it a little edgier.
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