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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 09-21-2015, 09:21 AM   #91
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Quote:
Originally Posted by Skiddins View Post
Tweak was the reason that Xray made the front of their motor mount two separate pieces for the '15, with the '14, in a crash the mount could tweak, but it stayed tweaked, the extra join meant it would return to it's original position more easily.

Have thought about a one piece layshaft mount being better, but not actually sure if it would benefit. The mounts on the Xray do allow some movement up and down so they don't 'pinch' the layshaft bearings when the chassis flexes.
Which is why I said may :P, but I still believe a one piece mount is not the way forward, some people just seem to have this obsession about having a one piece mount, even if it is a really nice piece of machining on the Yokomo
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Old 09-22-2015, 02:19 AM   #92
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Default xray 2016

The new Xray is due/expected in 1 week. I heard it'll RRP at £399!
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Old 09-22-2015, 03:27 AM   #93
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Quote:
Originally Posted by Bar View Post
Which is why I said may :P, but I still believe a one piece mount is not the way forward, some people just seem to have this obsession about having a one piece mount, even if it is a really nice piece of machining on the Yokomo
The Tamiya one-piece mount is a very good development.. given it allows you to both run the Yokomo "stiff" double screw setup, as well as a Schumacher style single screw setup... as well as in between (1 front, 2 rear) setups. Plus it supports the layshaft from both sides, as previously mentioned.
Having said that, the Xray seems to work pretty well with a older style split mount setup...
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Old 09-22-2015, 05:56 AM   #94
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The Tamiya one-piece mount is a very good development.. given it allows you to both run the Yokomo "stiff" double screw setup, as well as a Schumacher style single screw setup... as well as in between (1 front, 2 rear) setups. Plus it supports the layshaft from both sides, as previously mentioned.
Having said that, the Xray seems to work pretty well with a older style split mount setup...
I agree completely, I wish Yokomo had done this
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Old 09-23-2015, 05:10 AM   #95
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What springs can you guys recommend for the T4? Running on medium grip carpet mostly.
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Old 09-23-2015, 05:24 AM   #96
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Quote:
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What springs can you guys recommend for the T4? Running on medium grip carpet mostly.
The 2.5s that come with the kit are good to start with. If you want a little quicker reaction and slightly more steering through the middle, you could try 2.6 front.
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Old 09-23-2015, 06:56 AM   #97
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Quote:
Originally Posted by Lawson1307 View Post
What springs can you guys recommend for the T4? Running on medium grip carpet mostly.
As above, but it's also worth trying the 2.5-2.8's all round and Reflex Racings, green and light blue.
All dependent on grip and carpet type etc.
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Old 09-24-2015, 09:00 AM   #98
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Quote:
Originally Posted by Bar View Post
A solid one piece motor mount would take away grip, it may make it tweak less. My BD715 is really good on asphalt when the grip is high but when it's low the Xray's and Schumacher's are a lot better, a guy runs a BD713 when the grip is low, it's awesome in those conditions, especially in the damp and wet
Depends how it's attached to the chassis. The Xray mount, being asymmetric will definitely induce different flex characteristics left to right. The cantilever spur shaft is also a better engineering solution (not that Xray got it wrong with their system, but it took a little bit of extra engineering).
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Old 09-25-2015, 03:48 AM   #99
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Have you seen it?

Single or double sided I wonder?

As said before, I think they symmetric mout system of the Tamiya mout has merit. It's mighty strong too.

Look forward to see what they have come up with.
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Old 09-26-2015, 04:33 AM   #100
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Crappy pics.. but I spy floating steering on the right hand car...
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Old 09-26-2015, 05:10 AM   #101
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I just thought that was an old picture.

The motors are not current RX3's which is what Hagberg runs of late.
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Old 09-26-2015, 05:39 PM   #102
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Crappy pics.. but I spy floating steering on the right hand car...
Looks very much like this from Radtec.....



http://www.radtec-rc.com/index.php?r...product_id=174
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Old 09-28-2015, 02:28 AM   #103
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Originally Posted by cplus View Post
Looks very much like this from Radtec.....



http://www.radtec-rc.com/index.php?r...product_id=174
Several companies have designed floating steering.
Friend tried it on his Yokomo and took it straight off, killed all his corner speed.
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Old 09-28-2015, 08:12 AM   #104
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Full release details are coming on September 30th according to their recent facebook post.
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Old 09-29-2015, 11:07 AM   #105
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HK AOC Photo
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Xray T4 2016-t4-16-1.jpg   Xray T4 2016-xr-300022-11.jpg   Xray T4 2016-xr-300022-12.jpg   Xray T4 2016-xr-300022-13.jpg  
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