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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 02-23-2016, 04:31 PM   #556
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Originally Posted by yifuqiao View Post
ya, that was why I asked if a spacer between the bearings could have protected the bearings from getting destroyed during the hard impact.
I mean, crashes are inevitable.
Drive cleaner.
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Old 02-23-2016, 04:52 PM   #557
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It wont protect the bearing so much as protectthe two bearings from colapsing together when you torque the wheel nuts. in a crash all the force will still be pushing on the inner race. the nt1 axle or serpents axles are a little better in this regard as its not possible to compress the bearings with them.
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Old 02-23-2016, 05:01 PM   #558
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Just looking at protecting the bearing inner race from pushing up agains the outer race.
Thanks for the feedback.
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Old 02-23-2016, 05:49 PM   #559
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Just wondering what is this for? I remembered seeing this on my former TRF419 which I never bothered to install. If it is to protect - wouldn't it be even worst?
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Old 02-24-2016, 11:15 AM   #560
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Originally Posted by Friulimotosport View Post
Just looking at protecting the bearing inner race from pushing up agains the outer race.
Thanks for the feedback.
I did this on my yoke and it worked a treat,I think they were AE crush washers off the buggy so,Iv no idea if they will fit the Xray though as until you mentioned it I'd forgot about them and Iv sold the car 😕
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Old 02-24-2016, 10:47 PM   #561
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T-works on ebay has a cool orange crush washer for the T4 sedans.
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Old 02-25-2016, 05:48 PM   #562
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Had my t4 out for the first time on track yesterday. had to add 60 grams of weight and balance her. was chasing a skidish car but was tires, changed those and the car was immediately better.
car was already on the pace when i set it down, but made a few changes for our 100x40ft ozite hd track.
went to 25-28 progressives in the front and 1.3 bar. also pushed the front arms all the way back, leaving the rear arms stock. the setup is box stock aside from those. maybe a little less droop. i tend to measure it ORH but typically 2.5 mm f/r. i try to avoid dissimilar settings front/rear whenever possible.
on a practice night with no heat on in the facility, i was able to run the fastest lap for touring stock on the current layout. this weekend at club racing ill be trying to get the car into 1/12 13.5 territory. obviously not as fast as the top cars but certainly within range of the middle ground cars.

im certainly not the best in my club, but i do alright against those team xray guys
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Old 02-25-2016, 06:51 PM   #563
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I know my question sounds naive but is there a major difference between the T4 '16 and the T4 '14. I am relatively new and probably won't be as competitive. I just want to pick up an T4 and give it a try.
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Old 02-25-2016, 09:43 PM   #564
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I know my question sounds naive but is there a major difference between the T4 '16 and the T4 '14. I am relatively new and probably won't be as competitive. I just want to pick up an T4 and give it a try.
I would try and get a 15 if you can swing it.
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Old 02-25-2016, 10:18 PM   #565
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Originally Posted by yxiaocheng View Post
I know my question sounds naive but is there a major difference between the T4 '16 and the T4 '14. I am relatively new and probably won't be as competitive. I just want to pick up an T4 and give it a try.
I did extensive research before I bought my t4 16.
14 and 16 have different :
1. Sway bar mount, 16 sway bar mount has bearings, while 14 has the "traditional" mounting solution.
2. 16 could use active rear suspension, it is not widely used from what I see, but it is good to have that option.
3. I believe 16 has less max steering throw for higher comer speed compared to 14. I had a trf 419, and you will notice the t4 has less steering throw right away. The 419, imo, has way too much steering for my liking.

I think above all was all that matters to me. There is some other minor things I can't think of right now.
Dude, you should get a 15 or 16. You will be amazed.
Owing Tamiya is expensive, lol, I break at least 10 pairs of c hub after owning 419 for 2 month. While I only broke 1 c hub with my X-ray during 1 month ownership.
Not to mention, I was instantly faster with t4 on our track.
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Old 02-26-2016, 12:49 AM   #566
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Quote:
Originally Posted by yxiaocheng View Post
I know my question sounds naive but is there a major difference between the T4 '16 and the T4 '14. I am relatively new and probably won't be as competitive. I just want to pick up an T4 and give it a try.
The '14 is an excellent car (a huge improvement over the original T4). The 15/16 have some nice features like ball-bearing rollbars, but nothing that makes a big difference to performance. I actually found the '14 a bit more consistent as it has a slightly wider chassis.

So if you can get a '14 at a decent price go for it.
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Old 02-26-2016, 01:23 AM   #567
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One of the best features of the '16, and I'm surprised it hasn't been mentioned, is that it comes with ECS' in the kit.
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Old 02-26-2016, 08:04 AM   #568
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One of the best features of the '16, and I'm surprised it hasn't been mentioned, is that it comes with ECS' in the kit.
That's exactly why I'm getting a '16.
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Old 02-26-2016, 08:53 AM   #569
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I have a 14 and a 16, I think my 14 is the better car for some reason.. Not quite sure why

ECS is a must, I have been thinking of buying either another set of 14 or 16 bulkhead caps to share the roll center adjustments because they are pretty different.

The motor mount is different as well, designed with different flex that I haven't quite learned yet.

I'd imagine you can find a 14 car fairly cheap.. its hard to reason a 16 having both
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Old 02-26-2016, 10:12 AM   #570
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I have a 14 and a 16, I think my 14 is the better car for some reason.. Not quite sure why
I agree.

When I first got my T4 2016 I put the kit setup on it as I always do with a new Xray car, but for the first time I didn't like it at all. Once I put my 2014's setup on my 16 it was night and day better, however the feel is different. Not necessarily in a bad way but I still feel more comfortable with the 14. I don't have a ton of track time on the 2016 though either so that may change. Both cars are still more then capable but the ECS shafts in the 2016 kit is hard to pass up.
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