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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 01-13-2016, 09:30 PM   #1006
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Picked up a carpet edition from RC America today. Build going great....

One thing that is off, and it very well could be something I'm over looking. With the steering links at 38.7mm, this thing has a ton of toe in. Is it supposed to? Admittedly, I don't have the shocks on or the wheels on... It just looks crazy to me.

Any insight?
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Old 01-13-2016, 10:01 PM   #1007
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Quote:
Originally Posted by BillyT. View Post
Picked up a carpet edition from RC America today. Build going great....

One thing that is off, and it very well could be something I'm over looking. With the steering links at 38.7mm, this thing has a ton of toe in. Is it supposed to? Admittedly, I don't have the shocks on or the wheels on... It just looks crazy to me.

Any insight?
i had inconsistent toe on each side and that was after centering the steering on a setup station with stock turnbuckle lengths, had me stumped for a while until i noticed i had one of the knuckles on with the beveled edge facing out (incorrect) and one with the square face out. might be worth checking yours. the manual doesn't bring attention to this.
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Old 01-14-2016, 12:50 AM   #1008
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Quote:
Originally Posted by mourinho View Post
i had inconsistent toe on each side and that was after centering the steering on a setup station with stock turnbuckle lengths, had me stumped for a while until i noticed i had one of the knuckles on with the beveled edge facing out (incorrect) and one with the square face out. might be worth checking yours. the manual doesn't bring attention to this.
it actually does and it's been mentionned here too a few time times already
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Old 01-14-2016, 12:53 AM   #1009
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Body is done in typical Lonestar paint scheme... next to its RB6 sibling late yesterday evening:



Now, when are these bloody pistons gonna show it my mailbox?!?
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Old 01-14-2016, 01:05 AM   #1010
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Quote:
Originally Posted by BillyT. View Post
Picked up a carpet edition from RC America today. Build going great....

One thing that is off, and it very well could be something I'm over looking. With the steering links at 38.7mm, this thing has a ton of toe in. Is it supposed to? Admittedly, I don't have the shocks on or the wheels on... It just looks crazy to me.

Any insight?
Measurements in the manual is correct.

We are running them at 38.5mm at 0 degree toe with no bump steer shim on knuckles.

As mourinho says check to see if you have the steering knuckles on the correct way.

Flat side against wheel hex and beveled edge towards the inside.

Quote:
Originally Posted by mourinho View Post
i had inconsistent toe on each side and that was after centering the steering on a setup station with stock turnbuckle lengths, had me stumped for a while until i noticed i had one of the knuckles on with the beveled edge facing out (incorrect) and one with the square face out. might be worth checking yours. the manual doesn't bring attention to this.
Measurements in the manual are correct.

And the pictures clearly show the steering knuckles with the flat side towards the hex and the beveled edge towards the inside.

Quote:
Originally Posted by Lonestar View Post
it actually does and it's been mentioned here too a few time times already

I'm done proof reading the XB2 Dirt Edition manual and one of my suggestions was to make a note of the direction of the steering knuckles as apparently so many don't read or pay attention to the manual

Bent
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Last edited by BentKa; 01-14-2016 at 01:24 AM.
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Old 01-14-2016, 04:28 AM   #1011
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Quote:
Originally Posted by Lonestar View Post
it actually does and it's been mentionned here too a few time times already


im aware its been raised in the thread before but it seems billy isnt, so rather than being a douchebag and telling him to do a search i just showed him the issue i had.

And no, the manual does not have a "note orientation" label pointing to the knuckle, when it clearly should have.

Quote:
Originally Posted by BentKa View Post
I'm done proof reading the XB2 Dirt Edition manual and one of my suggestions was to make a note of the direction of the steering knuckles

Bent
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Old 01-14-2016, 04:41 AM   #1012
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Quote:
Originally Posted by mourinho View Post


im aware its been raised in the thread before but it seems billy isnt, so rather than being a douchebag and telling him to do a search i just showed him the issue i had.

And no, the manual does not have a "note orientation" label pointing to the knuckle, when it clearly should have.
If you read what I wrote I said that my suggestion is to add this to the manual for the XB2 Dirt Edition and future runs of the Carpet Edition

Quote:
I'm done proof reading the XB2 Dirt Edition manual and one of my suggestions was to make a note of the direction of the steering knuckles as apparently so many don't read or pay attention to the manual
Bent
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Old 01-14-2016, 05:02 AM   #1013
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Quote:
Originally Posted by mourinho View Post
i had inconsistent toe on each side and that was after centering the steering on a setup station with stock turnbuckle lengths, had me stumped for a while until i noticed i had one of the knuckles on with the beveled edge facing out (incorrect) and one with the square face out. might be worth checking yours. the manual doesn't bring attention to this.
Yup, that's it!

Very obvious to me now... Not so much yesterday.

Thanks. I knew it was probably something I was overlooking, but sometimes you gotta step back and "get another set of eyes on it".
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Old 01-14-2016, 05:14 AM   #1014
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Quote:
Originally Posted by BentKa View Post

I'm done proof reading the XB2 Dirt Edition manual and one of my suggestions was to make a note of the direction of the steering knuckles as apparently so many don't read or pay attention to the manual

Bent
So how soon do we get to see the full details/pictures of the production Dirt edition?
I'm thinking I need one as a companion to my '16 XB4
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Old 01-14-2016, 05:14 AM   #1015
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Wow BillyT I ordered my XB2 monday from RCAmerica and only live 100 miles away and still don't have it ��.
Eagerly waiting for it to arrive.
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Old 01-14-2016, 05:20 AM   #1016
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Quote:
Originally Posted by mourinho View Post


im aware its been raised in the thread before but it seems billy isnt, so rather than being a douchebag and telling him to do a search i just showed him the issue i had.

And no, the manual does not have a "note orientation" label pointing to the knuckle, when it clearly should have.
Dont worry. Some of us even forgot to put some of bearings in the gearbox (ahem ). Then again they found out all by themselves what the problem was

I see this is a full-blast racecar. I kind of expect the builder to have past experience that will help him/her build it properly, even if the manual doesn't specifically call out every possible building mistake that can happen. Or to troubleshoot appropriately, at least...

Happy that he's got it sorted out anyway. Just don't let him build an italian 8th scale onroad nitro car
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Last edited by Lonestar; 01-14-2016 at 06:01 AM.
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Old 01-14-2016, 07:05 AM   #1017
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Originally Posted by BIGTRUX View Post
Wow BillyT I ordered my XB2 monday from RCAmerica and only live 100 miles away and still don't have it ��.
Eagerly waiting for it to arrive.
I live 20 minutes from them. I'd bet you are going to have it today or tomorrow for sure.
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Old 01-14-2016, 07:11 AM   #1018
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Quote:
Originally Posted by Lonestar View Post
Dont worry. Some of us even forgot to put some of bearings in the gearbox (ahem ). Then again they found out all by themselves what the problem was

I see this is a full-blast racecar. I kind of expect the builder to have past experience that will help him/her build it properly, even if the manual doesn't specifically call out every possible building mistake that can happen. Or to troubleshoot appropriately, at least...

Happy that he's got it sorted out anyway. Just don't let him build an italian 8th scale onroad nitro car

You don't have many friends do you?
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Old 01-14-2016, 07:13 AM   #1019
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Quote:
Originally Posted by jmcelroy42 View Post
So how soon do we get to see the full details/pictures of the production Dirt edition?
I'm thinking I need one as a companion to my '16 XB4
Soooon

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Old 01-14-2016, 07:23 AM   #1020
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is there a gullwing front arm option in works?
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