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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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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 09-26-2016, 07:39 AM   #991
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Quote:
Originally Posted by Boostinswifty38 View Post
Does anyone have the weight of the hard xray t3 front bumper? I could weigh mine but its a major pita to take the bumper all the way apart just to get a weight. Also, do you guys perfer 50/50, or more weight in the back?
Depends on what you want out of your car. More low speed steering or high speed steering. It will also be dependent on the track layout.

From my experience the hard T3 bumper is one of if not the heaviest bumper on the market. The hard T4 bumper feels lighter but I haven't really put them on a scale.
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Old 09-26-2016, 07:49 AM   #992
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I know it should be lighter for sure, if nothing else its also far taller. 8 need to change the raisers and bumper and etc out when switching the bumper over.

As for speed, id say high speed sweepers and having the car want to rotate through those js my biggest issue. Down low its different and can be fixed mechanically.
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Old 09-26-2016, 09:33 AM   #993
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Quote:
Originally Posted by malkiy View Post
Depends on what you want out of your car. More low speed steering or high speed steering. It will also be dependent on the track layout.

From my experience the hard T3 bumper is one of if not the heaviest bumper on the market. The hard T4 bumper feels lighter but I haven't really put them on a scale.
T3 hard bumper is 22 grams
T4 hard bumper is about 16 grams
The t3 soft bumper is 6 grams
A lot of weight diffrence ,my experience owith 17.5 on carpet is that the car transition and corner faster on sharp turns with the soft bumber ...the way to go if u don't hit stuff but if u do like me it will save u from going to the pits to dial the tweak out of the car
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Old 09-26-2016, 10:51 AM   #994
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Quote:
Originally Posted by sammyzilla View Post
T3 hard bumper is 22 grams
T4 hard bumper is about 16 grams
The t3 soft bumper is 6 grams
A lot of weight diffrence ,my experience owith 17.5 on carpet is that the car transition and corner faster on sharp turns with the soft bumber ...the way to go if u don't hit stuff but if u do like me it will save u from going to the pits to dial the tweak out of the car
Reflex Racing's hard bumper is 9.3g, and offers a lot more protection
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Old 09-26-2016, 01:02 PM   #995
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Quote:
Originally Posted by Boostinswifty38 View Post
I know it should be lighter for sure, if nothing else its also far taller. 8 need to change the raisers and bumper and etc out when switching the bumper over.

As for speed, id say high speed sweepers and having the car want to rotate through those js my biggest issue. Down low its different and can be fixed mechanically.
Stay away from the T3 hard bumper if you want high speed steering.
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Old 09-26-2016, 01:09 PM   #996
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Thats what ive been overcoming forever. Ill switch it for a rsd bumper and see what happens.
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Old 09-26-2016, 07:53 PM   #997
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Anyone know of a video on gluing sidewalls? I am tired of my front tires looking like a 3 year old tried gluing them up?

Any recommendations on which glue?

Last edited by dr_hfuhuhurr; 09-26-2016 at 08:07 PM.
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Old 09-26-2016, 08:01 PM   #998
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I do it on the slowest ability to turn on a tire truer/balancer.
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Old 10-02-2016, 01:17 PM   #999
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Swapped the rsd bumper onto the car, now 50/50 front to rear and side to side. Curious though, the front bumper has slop up and down-not held very well. Suggestions?
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Old 10-02-2016, 04:12 PM   #1000
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Quote:
Originally Posted by Boostinswifty38 View Post
Swapped the rsd bumper onto the car, now 50/50 front to rear and side to side. Curious though, the front bumper has slop up and down-not held very well. Suggestions?
Pair of bodyclips low down to hold the bumper brace in place
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Old 10-02-2016, 05:32 PM   #1001
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Fair enough, thought of that. Just sasnt sure if anyone maybe drilled the carbon brace or had other thoughts, since the carbon brace doesnt bend like the plastic ones
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Old 10-02-2016, 07:06 PM   #1002
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Quote:
Originally Posted by Skiddins View Post
Pair of bodyclips low down to hold the bumper brace in place
I've always used the pins from body mounts, little cleaner look with the same outcome.
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Old 10-02-2016, 07:26 PM   #1003
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anyone still manage to get the smokem spool cup for tamiya DCJs?
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Old 10-02-2016, 09:58 PM   #1004
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has anyone noticed a real difference by switching to the white belts? Mine are due for a replacement soon, and I'm really wondering if the extra $$ is worth it.
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Old 10-02-2016, 10:03 PM   #1005
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They last longer and dont stretch as much
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