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R/C Tech Forums Thread Wiki: Official Xray XB2 2WD Buggy Thread
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Last edit by: dgrobe2112
Instruction manuals: (C/O BentKa)

Xray XB2 Carpet Edition Instruction Manual
http://www.teamxray.com/xb2/2016/dow...ual_v2_low.pdf

Xray XB2 Dirt Edition Instruction Manual
http://www.teamxray.com/xb2/2016/dow...w.pdf?update=2

BentKa: Carpet Edition 4 gear to 3 gear laydown conversion parts:
  • Gearbox #323014
  • Motorplate #324012
  • 36T idler gear #324236
  • Brace for waterfall #324031


Socket: Bodies Available:

Xray has two OEM bodies, the .75mm and the .50mm light weight:
light weight: https://www.amainhobbies.com/xray-xb...329701/p492942

OEM .75mm: https://www.amainhobbies.com/xray-0....329700/p477762

Also, I've fitted the yz2 body, both the light and regular fit fine, just make your own cut lines:
https://www.amainhobbies.com/yokomo-...z2-101/p417674


[i] J Concepts S2 Body [i]


Penguin Racing makes a high grip body that fits the DE and CE:
http://www.ebay.com/itm/X-Ray-Xb2-Hi...oAAOSw1S9WewHV



Socket: Wheel fitment:

According to some, you'll require different offset rear hexes to use B5M wheels. According to my Hudy setup board, B5M wheels are the same offset. I measured the overall width of the car with XB2 wheels, and then again with B5M wheels, same measurement.

On the front, B5M wheels were 1.5mm wider. Xray offers hexes to reduce width -.75 on each side, or you could spend 3-5 minutes and sand your OEM hexes down .75mm.

edit by dgrobe2112
here are the hubs for losi and AE

for AE Front 365354 -0.75
for Losi rear 365358 +3.00 (4 stripe)
for AE rear 365359 +3.75 (5 stripe)



Socket: Flex and the XB2:

Flex screws are as follows:

Plastic bulkhead between motor and waterfall. Can remove screw in chassis, or remove bulkhead altogether.

Waterfall has 4 screws, can remove the inner two or outer two. IIRC, removing the inner two provides more flex, and thus more bite.

Removing the battery brace. This gives a tremendous amount of flex on the middle of the car, and can sometimes be inconsistent. I do this for outdoor racing on low bite. I like the feel over the 4 gear in 17.5 racing, since the 4 gear will take some snap away off the corner.

Rear C block - has inner and outer screws. I haven't played with this, as it's a crucial pivot point of the car.

Medium arms and towers -> I don't believe the carpet car has the rear medium tower available, however the DE DOES have an optional hard part. I think the hard parts are more consistent, especially when it gets hot (90+ degrees F). However, the medium parts do NOT break unless you're severely talented. They also don't wear out.



Socket: Avid/Schelle Slipper mod:

Credit to WillS, Matt Trimmings, and myself for figuring this out months ago.

Parts you'll need:

B5M V2 3gear compatible top shaft.
TKO Special 5x13x5 bear OR 5x13x6 bearing Either can work. This replaces the spur side bearing on the top shaft.
5mm shims, same shims used in 1/8th scale clutch bells. Look for protek .1mm and .2mm kit.
Avid or Schelle b5m top shaft kit, with spur gears of your choosing. (DE can't handle a 69, the CE can)

Shimming: You'll need to install the bearing in the front portion of the removable piece for the shaft. Make sure the bearing is pushed all the way in. With the TKO bearing, you'll need to shim approximately 1.4mm on the front side of the top shaft. Roughly .3-.5mm with the other bearing. This is a "feel" and tolerance setting. I urge you to watch videos about setting clutch bell play in 1/8th scale to get an idea of what yield you want for end play. Too tight, it'll eat bearings.

Outside of trans case: Use Avid/Schelle top shaft spacer plus .2mm shim to offset slipper from motor plate perfectly. Install slipper as instructed, and use Avid/Schelle spring and XB2 slipper nut.

- NEW - Schelle now sells Xb2 Topshafts. They include a spacer, so no need for shims in gearbox, and comes with the smaller bearing. Both methods work.

Socket: Yokomo Differential or MIP pucks:

Credit to: WillS for figuring out pucks, and as well fitting the Losi 22 diff with the same mods.

Parts needed: Yokomo Bmax2 or YZ2 complete diff OR Mip PUCKS outdrives
Xb2 diff gear
Bmax2 V3 Worlds rear dog bones, or Bmax 2 pucks dog bones
You'll use XB2 axles, and will require no other mods for the axles or dog bones.
You'll need .2mm outdrive/diff shims. Shim approximately .5mm on each side of the diff, behind the bearings. The top portion of the transmission is what "sets" the diff in place, not the bottom half. A little play back and forth is fine, the stock diff has some play from the factory.

dgrobe2112: CE to DE conversion:
along with the parts needed.. you MUST have these following hardware, or it wont work

https://www.teamxray.com/xb2/2016/do...conversion.pdf

(3) XRAY 902340 M3x40 button head screws. these are the screws that mount the motor mount to the tranny
(4) XRAY 903322 M3x22 counter sunk screws. these are for the rear diff case, to mount to the chassis. i think i used some M3x18 and they worked ok.

Socket: Best method for setting up the XB2 ball diff:

The XB2 diff is stellar when setup correctly. The spring is too short and soft, allowing the diff to slip. You'll need to glue the rings to the outdrives with just a drop of CA, then add a 1mm shim between the spring and the outdrive. This preloads the spring and stops the diff from slipping so easily.

OR, you can run the AE diff spring, which is both slightly longer, and stiffer. The overwhelming issue is the stock spring allows the nut to bottom out on the outdrive before the diff is tight enough.

This shim:
https://www.amainhobbies.com/xray-al...a303122/p12070

This diff spring (don't need a shim, then.)

https://www.teamassociated.com/parts...thrust_spring/

Functional Aftermarket parts: (Not just bling!)

Servo Horn: (The B5M sized horns are too short to get full throw)
https://www.amainhobbies.com/protek-...800-bk/p273496


Socket: Exotek has a full suite of parts, some bling, some not. Here's a list (all fit DE and CE, unless otherwise noted):

Titanium front axles: http://www.exotekracing.com/xb2-titanium-front-axles-2/

Rear Hanger, HD (Adds 4 grams): http://www.exotekracing.com/xb2-rear...75-heavy-duty/

Brass C block, 18 grams added: http://www.exotekracing.com/xb2-rear...-brass-weight/

Alloy front camber mount: http://www.exotekracing.com/xb2-fron...er-mount-7075/

Carbon Fiber Chassis: http://www.exotekracing.com/xb2-carb...m-plate-2-5mm/

Alloy rear hubs:http://www.exotekracing.com/xb2-allo...ub-set-2-7075/

Alloy servo mounts, allow for use of LP servo:http://www.exotekracing.com/xb2-xb4-...-alloy-1-pair/

Titanium shock mounts: http://www.exotekracing.com/xb2-xb4-...shock-posts-2/

Slipper Eliminator: http://www.exotekracing.com/xb2-direct-spur-mount/
Xray eliminator is #324100

dgrobe2112: 2016-2017 new 3 gear laydown
Gearbox #323014
Motor plate #324012
36T idler gear #324236
Brace for waterfall #324031

dgrobe2112: Xray Spring Rate Conversion:
front C WHT
368174 2 str 0.65-0.85 3.71-4.85

358184 2 dot 0.65 3.71
368185 3 dot 0.72 4.11
368186 4 dot 0.80 4.57


Rear
368273 2 str 0.35-0.45 2.00-2.57

368284 1 Dot 0.35 2.00
368285 2 Dot 0.40 2.28
368286 3 Dot 0.45 2.57
368287 4 Dot 0.50 2.86

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Old 03-24-2016, 11:27 AM   #2176
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for the rear.. you need to add 1.5mm shims to each side.. or get the 365359 rear hex to use on the rear instead of the stock rear hex.
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Old 03-24-2016, 11:38 AM   #2177
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Quote:
Originally Posted by JAE View Post
I have a ton of VTR 2.4 Electrons with VTR and AKA Evo rims. What do I need to get these to fit on the XB2 and can this also be used for the 2.2mm in AE offset? thank much all. look forward to the build
I am running AE/RB6 offset front and rear with no problems.
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Old 03-24-2016, 12:45 PM   #2178
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anyone run the dirt in rear motor yet?

all these breaks and and updated parts coming out have made me regret getting the first one out and i havent even turned 1 lap yet.....i should have n
known better with xray
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Old 03-24-2016, 12:50 PM   #2179
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Originally Posted by WillS View Post
I am running AE/RB6 offset front and rear with no problems.
Yes but the front offset is different than xray stock you need hex -0.75 #365354 to get same width and also rear you can get exotek 12mm hex 7mm wide to get exactly offset on rear.
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Old 03-24-2016, 12:59 PM   #2180
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Originally Posted by raved007 View Post
Yes but the front offset is different than xray stock you need hex -0.75 #365354 to get same width and also rear you can get exotek 12mm hex 7mm wide to get exactly offset on rear.
Ok? It works without the different hexes and is on pace with all the other expert stock guys so I am content with that.
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Old 03-24-2016, 02:35 PM   #2181
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For what its worth I've swapped tires back and forth from my B5M with no issues. I've actually swapped rears from the XB2, to B5M, and back to an XB4. I'm not fast enough to feel the difference.
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Old 03-24-2016, 04:33 PM   #2182
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anyone run the dirt in rear motor yet?

all these breaks and and updated parts coming out have made me regret getting the first one out and i havent even turned 1 lap yet.....i should have n
known better with xray
What are you talking about? Are we talking about the xb2? There are NO updated parts.
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Old 03-24-2016, 06:45 PM   #2183
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Originally Posted by RockStar_199 View Post
anyone run the dirt in rear motor yet?

all these breaks and and updated parts coming out have made me regret getting the first one out and i havent even turned 1 lap yet.....i should have n
known better with xray
Rear motor? I didn't know the car could run the motor on the rear of the car. It is a specific mid motor car. Rear motor would need different suspension geometry. As for buyers remorse. Xb2 is again hands down one of the best buys out. Go run the car and be happy with one of the best cars out.
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Old 03-24-2016, 07:30 PM   #2184
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Quote:
Originally Posted by RockStar_199 View Post
anyone run the dirt in rear motor yet?

all these breaks and and updated parts coming out have made me regret getting the first one out and i havent even turned 1 lap yet.....i should have n
known better with xray
When you read about it having the motor having a mid or rear configuration, its not what you think. It is a dedicated mid motor buggy, but you have a choice of setting up the motor for mid or mid-rear as they call it. one way has the motor sitting further back by 12 mm i think. But it is still in the mid motor configuration. One is for med to med-high traction and the other is for low to med traction. Then the carpet edition is for high traction situations
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Old 03-24-2016, 07:33 PM   #2185
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And what your calling updates, like the shock towers are really just tuning aids.The stock towers are gonna be fine for 90% of us. The guy looking for that last half a tenth of a second MAY see a difference in the newest towers.
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Old 03-24-2016, 10:43 PM   #2186
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Originally Posted by sickpuppy1 View Post
When you read about it having the motor having a mid or rear configuration, its not what you think. It is a dedicated mid motor buggy, but you have a choice of setting up the motor for mid or mid-rear as they call it. one way has the motor sitting further back by 12 mm i think. But it is still in the mid motor configuration. One is for med to med-high traction and the other is for low to med traction. Then the carpet edition is for high traction situations
Thanks for clarifying. I imagine it's pertaining to the ce and de difference. De being rear motor. Unless theirs something more!?
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Old 03-24-2016, 11:21 PM   #2187
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Originally Posted by Socket View Post
I'm sorry my auto correct was on lol.
What I meant to say was I was wondering if Xray was going to come out with a larger gear cover for this car so we can use larger pinions for 17.5
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Old 03-24-2016, 11:28 PM   #2188
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How big do you want to go? I fit a 33 with room to spare.
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Old 03-25-2016, 03:00 AM   #2189
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Originally Posted by jake alton View Post
Rear motor? I didn't know the car could run the motor on the rear of the car. It is a specific mid motor car. Rear motor would need different suspension geometry. As for buyers remorse. Xb2 is again hands down one of the best buys out. Go run the car and be happy with one of the best cars out.
Quote:
Originally Posted by sickpuppy1 View Post
When you read about it having the motor having a mid or rear configuration, its not what you think. It is a dedicated mid motor buggy, but you have a choice of setting up the motor for mid or mid-rear as they call it. one way has the motor sitting further back by 12 mm i think. But it is still in the mid motor configuration. One is for med to med-high traction and the other is for low to med traction. Then the carpet edition is for high traction situations
crack cocaine must be pretty easy to get

or do you need to physically see a rear motor to convince you there is a rear motor xb2?

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Old 03-25-2016, 03:32 AM   #2190
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[QUOTE=hacker;14463202]crack cocaine must be pretty easy to get

or do you need to physically see a rear motor to convince you there is a rear motor xb2?

Xray has plans to release a rear motor for the dirt xb2, but has yet to be announced when it will be available. So to answer the original question; no one has run the rear motor configuration because it is not yet available.
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