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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 12-09-2015, 12:20 AM   #286
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Personally, I have little experience with the std shock setup (bar building them with 4x1.1 and 450oils)... but with the PSS, I prefer either 500 or 550 oil, with the foam in the top. Find the foam helps to increase the pack a smidge, which is good with the softer initial of the progressive feel.
Oh, and thats with 2.7's all round, outdoor low-med asphalt.
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Old 12-09-2015, 02:28 AM   #287
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so this setup is only for low and med traction track right ?
Not entirely. I've been running my topdeck raised on anything from low to super high grip. My home track usually gets extremely sticky, to where your shoes stick to the track and your shoes leave black marks on the tile around the track when you're done marshalling. I like the Avid 1.5 Hard TD raised 1mm w/ the motor mount post no matter how high the grip gets. This makes the car smoother and less likely to tip or traction roll, although it can cause the car to be a little too stuck. I've also determined that I like a lot more flex than anyone else in my area. I've run both the 15 and 16 with the TD down, more screws, less screws, hard TD and soft TDs and I always return to the same thing.
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Old 12-09-2015, 09:59 AM   #288
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Not entirely. I've been running my topdeck raised on anything from low to super high grip. My home track usually gets extremely sticky, to where your shoes stick to the track and your shoes leave black marks on the tile around the track when you're done marshalling. I like the Avid 1.5 Hard TD raised 1mm w/ the motor mount post no matter how high the grip gets. This makes the car smoother and less likely to tip or traction roll, although it can cause the car to be a little too stuck. I've also determined that I like a lot more flex than anyone else in my area. I've run both the 15 and 16 with the TD down, more screws, less screws, hard TD and soft TDs and I always return to the same thing.
just want to ask , any difference of raising 0.5mm or 1mm of topdeck ???
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Old 12-09-2015, 10:08 AM   #289
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just want to ask , any difference of raising 0.5mm or 1mm of topdeck ???
As long as the TD isn't touching the layshaft mounts when it flexes, I don't believe there is a difference. 0.5mm may not be enough clearance to avoid that.
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Old 12-09-2015, 10:22 AM   #290
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Personally, I have little experience with the std shock setup (bar building them with 4x1.1 and 450oils)... but with the PSS, I prefer either 500 or 550 oil, with the foam in the top. Find the foam helps to increase the pack a smidge, which is good with the softer initial of the progressive feel.
Oh, and thats with 2.7's all round, outdoor low-med asphalt.
So you're no longer running a Tamiya ? Your website is in need of an update ;-)
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Old 12-09-2015, 10:44 AM   #291
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As long as the TD isn't touching the layshaft mounts when it flexes, I don't believe there is a difference. 0.5mm may not be enough clearance to avoid that.
cool thanks
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Old 12-09-2015, 02:00 PM   #292
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Don't ask me how I know, but if you break a topdeck, a little work with a dremel can yield a nice light and easy to use set of top deck shims.
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Old 12-09-2015, 03:43 PM   #293
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So you're no longer running a Tamiya ? Your website is in need of an update ;-)
Haha... yup. Have actually got any orange transfer post in the drafts... but since getting involved with the local sanctioning body here, along with other hobbies, haven't had a lot of time spare too finish it...
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Old 12-09-2015, 04:09 PM   #294
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Originally Posted by andrewdoherty View Post
Don't ask me how I know, but if you break a topdeck, a little work with a dremel can yield a nice light and easy to use set of top deck shims.
Brilliant! Now where is my old top deck...

Snowy.
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Old 12-09-2015, 11:28 PM   #295
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Originally Posted by TryHard View Post
Personally, I have little experience with the std shock setup (bar building them with 4x1.1 and 450oils)... but with the PSS, I prefer either 500 or 550 oil, with the foam in the top. Find the foam helps to increase the pack a smidge, which is good with the softer initial of the progressive feel.
Oh, and thats with 2.7's all round, outdoor low-med asphalt.
Thanks for the tip TryHard!
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Old 12-10-2015, 12:18 AM   #296
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Thanks for the tip TryHard!
Forgot to add, that's with minimum rebound too.
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Old 12-10-2015, 10:12 AM   #297
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T4 '16---With 96 spur, will 56-58 pinion fit?
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Old 12-10-2015, 10:13 AM   #298
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T4 '16---With 96 spur, will 56-58 pinion fit?
Don't think so...
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Old 12-10-2015, 10:53 AM   #299
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What is a good combo to use for 21.5?
i better order a 92 spur.
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Old 12-10-2015, 04:38 PM   #300
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What is a good combo to use for 21.5?
i better order a 92 spur.
The 1 time I ran 21.5 I ran a 94/49 which is a 3.64. This was on an open layout on an 80x36 high bite carpet track. My notes say normal gear is 3.4-3.7 for 21.5. I don't recall where my timing was set though. This was with a Motiv M-Code.
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