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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 12-18-2015, 12:51 AM   #331
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Just wonder if anyone tried the Spec R motor mount and/or the floating steering? Does it makes any difference in terms of steering?
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Old 12-18-2015, 01:33 PM   #332
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i have the new floating Xray steering on my '15.. definitly made a difference in overall steering.. gave it more overall it felt like to me.. so..
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Old 12-19-2015, 08:29 AM   #333
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Default just ordered t4 16

I just ordered a t4 16 . Do I need to buy a aluminum chassis ? I will be running on carpet low/medium bite and where can I get a good setup ? I will be running Jaco tires .

Thanks
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Old 12-19-2015, 09:39 AM   #334
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Med/low grip I don't think so.
If it's the new carpet yes xray chassis is best
Old carpet med/high the avid works really well
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Old 12-21-2015, 06:41 AM   #335
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Questions?? Pinion Spur combo for 13.5 Blinky class

Run my new '16 T4 for the first time yesterday. Felt great! First adjustment needed - pinion.

What max pinion size fits with standard 84T / 48P spur? I will be running 13.5T blinky class on carpet and from what I read need to target FDR around 4. So, I was thinking need options maybe for FDR 3.7 - 4.3 to try. From very limited pinions I had available, I tried pinion 27T with 84T spur which gives FDR 5.9. Was way too short geared.

I'm thinking I could get 78T spur from Xray, smallest they have for 48P. Then 34, 37 and 40 T pinions which would give me following options:

pinion spur FDR
23 84 6,94
40 84 3,99
37 84 4,31
34 84 4,69
40 78 3,71
37 78 4,01
34 78 4,36

But I'm not sure if those combos are physically possible. Any idea? If I had to I can switch to 64P of course.
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Old 12-21-2015, 07:34 AM   #336
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Quote:
Originally Posted by maris View Post
Run my new '16 T4 for the first time yesterday. Felt great! First adjustment needed - pinion.

What max pinion size fits with standard 84T / 48P spur? I will be running 13.5T blinky class on carpet and from what I read need to target FDR around 4. So, I was thinking need options maybe for FDR 3.7 - 4.3 to try. From very limited pinions I had available, I tried pinion 27T with 84T spur which gives FDR 5.9. Was way too short geared.

I'm thinking I could get 78T spur from Xray, smallest they have for 48P. Then 34, 37 and 40 T pinions which would give me following options:

pinion spur FDR
23 84 6,94
40 84 3,99
37 84 4,31
34 84 4,69
40 78 3,71
37 78 4,01
34 78 4,36

But I'm not sure if those combos are physically possible. Any idea? If I had to I can switch to 64P of course.

I think it would be best to switch to 64P. In 13.5 blinky TC, I usually run around a 4.7 ratio. You could start with a 104 spur and a 42 or 43 pinion. That should get you close.

Sam
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Old 12-21-2015, 09:50 AM   #337
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For pinions, any brand pinions giving trouble for the shaft too long on them
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Old 12-21-2015, 10:08 AM   #338
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Quote:
Originally Posted by dal bains View Post
For pinions, any brand pinions giving trouble for the shaft too long on them
Did you have a specific brand in mind? You'll be safe with LeeSpeed, Panaracer and Xenon for sure. These are the best quality gears available.
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Old 12-21-2015, 10:13 AM   #339
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Quote:
Originally Posted by R Dodge View Post
Did you have a specific brand in mind? You'll be safe with LeeSpeed, Panaracer and Xenon for sure. These are the best quality gears available.
PRS look like they might not work
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Old 12-21-2015, 10:25 AM   #340
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Quote:
Originally Posted by dal bains View Post
PRS look like they might not work
They should be fine though it might be tight. I've used them in the past and never had any major issues. Just keep an eye on your spacing between the pinion and the battery.
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Old 12-21-2015, 11:02 AM   #341
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Quote:
Originally Posted by maris View Post
Run my new '16 T4 for the first time yesterday. Felt great! First adjustment needed - pinion.

What max pinion size fits with standard 84T / 48P spur? I will be running 13.5T blinky class on carpet and from what I read need to target FDR around 4. So, I was thinking need options maybe for FDR 3.7 - 4.3 to try. From very limited pinions I had available, I tried pinion 27T with 84T spur which gives FDR 5.9. Was way too short geared.

I'm thinking I could get 78T spur from Xray, smallest they have for 48P. Then 34, 37 and 40 T pinions which would give me following options:

pinion spur FDR
23 84 6,94
40 84 3,99
37 84 4,31
34 84 4,69
40 78 3,71
37 78 4,01
34 78 4,36

But I'm not sure if those combos are physically possible. Any idea? If I had to I can switch to 64P of course.
You can get smaller than 74 48 dp spurs from many other manufacturers, I use RW offset for Xray, I believe Panaracer fit plus many more a quick search on this thread or the T4'15 thread will give more manufacturers.
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Old 12-21-2015, 11:28 AM   #342
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Panaracer definitely fits.
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Old 12-22-2015, 02:17 AM   #343
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Quote:
Originally Posted by Sam Isaacs View Post
I think it would be best to switch to 64P. In 13.5 blinky TC, I usually run around a 4.7 ratio. You could start with a 104 spur and a 42 or 43 pinion. That should get you close.

Sam
Thanks. Looks like the same ration can be achieved while sticking to 48p. I did a little more reading myself and understood how to convert from 48p to 64p and basically 104/64p is the same diameter as 78/48p. 42/64p => 31/48p. By measuring motor to spur distances it looks like 34/48p is bigest pinion that fits with stock 84t spur. And interestingly enough 34/84 gives ratio of 4.69.

So, simplest would be just to start with stock spur and 34 pinion. But to have some adjustment options I ordered pinion from 31 to 36 and 78 spur. This should give me FDR from 4.1 to 5.1. So, I' m sticking with 48p for now. Will see.
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Old 12-22-2015, 02:34 AM   #344
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Quote:
Originally Posted by maris View Post
Thanks. Looks like the same ration can be achieved while sticking to 48p. I did a little more reading myself and understood how to convert from 48p to 64p and basically 104/64p is the same diameter as 78/48p. 42/64p => 31/48p. By measuring motor to spur distances it looks like 34/48p is bigest pinion that fits with stock 84t spur. And interestingly enough 34/84 gives ratio of 4.69.

So, simplest would be just to start with stock spur and 34 pinion. But to have some adjustment options I ordered pinion from 31 to 36 and 78 spur. This should give me FDR from 4.1 to 5.1. So, I' m sticking with 48p for now. Will see.

Hey Maris,

Glad you found something that works for you. I think Sam was suggesting 64P since you run on carpet and debris isn't really a concern, also using 64P allows you to fine-tune your FDR a little better than 48P does.

Either way, if you're comfortable with 48P and it seems you've done your homework on everything, then you'll be fine to start out with that.
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Old 12-22-2015, 07:12 PM   #345
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Leespeed and Panaracer fit perfectly.

Unfortunately, xenon doesn't

you could also try spec r as they fit as well as some hpi.
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