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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 12-22-2015, 10:03 AM   #661
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I had big issues breaking in the ball diff this morning. Long story short, there's a washer on the inside of the thrust bearing and nothing on the outside. My snap ring pliers are broken so I won't be investigating further right now, but I'm thinking both washers got put on the inside instead of one on each side.
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Old 12-22-2015, 10:07 AM   #662
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Quote:
Originally Posted by kevink123 View Post
so when will the carpet edition be back in stock?
Quote:
Originally Posted by celt View Post
I'm guessing this is a pretty popular item that many have waited a very long time for. If you want one, I would recommend pre-ordering for the next shipment.

And...you do want one...
Quote:
Originally Posted by hairymuffin View Post
Sorry forgot to say dirt edition,when it comes... I think quite a few of us are getting the xb2 because of your input on this thread Bentka.. Awesome job buddy
The first batch of the XB2 Carpet Edition was sold out in record time so it all depends on wether RcAmerica managed to get a 2nd order in from the first batch or not.
I know several of the European distributors did.

Your best bet is to send them an email and just ask.

I'm sure they will be happy to let you know when they expect their next shipment

Thanks Hairymuffin

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Old 12-22-2015, 10:27 AM   #663
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Quote:
Originally Posted by Saturn V View Post
I had big issues breaking in the ball diff this morning. Long story short, there's a washer on the inside of the thrust bearing and nothing on the outside. My snap ring pliers are broken so I won't be investigating further right now, but I'm thinking both washers got put on the inside instead of one on each side.
You absolutely have to take the ball diff apart from the factory assembly. The ball diff is not lubricated and if you try to break it in as is you will have serious problems.
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Old 12-22-2015, 11:16 AM   #664
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I havent driven the xb2 yet but I swore I saw black grease on the thurst washer outside of the diff and opened the diff itself and saw clear diff grease on the diff balls.. now I'm second guessing myself and will take it apart tonight before break-in and run.
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Old 12-22-2015, 11:24 AM   #665
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At least it's nice and easy to access the diff
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Old 12-22-2015, 11:33 AM   #666
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Will Xray be releasing chassis protector sheets for the XB2 and XB4 '16?
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Old 12-22-2015, 11:47 AM   #667
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Quote:
Originally Posted by Poppin Fresh View Post
Will Xray be releasing chassis protector sheets for the XB2 and XB4 '16?
Most likely not.

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Old 12-22-2015, 12:05 PM   #668
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Judging by the response the buggies are getting in the market currently, I would anticipate that one of the aftermarket companies currently producing the chassis protector sheets for the other brands will soon be adding an XB2 variant to their catalog.
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Old 12-22-2015, 12:39 PM   #669
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Put this together.. I am looking for the Xray 12mm Buggy Front 1-Dot spring rating.

Cannot seem to locate it on teamxray.com.
Attached Thumbnails
Official Xray XB2 2WD Buggy Thread-screen-shot-2015-12-22-3.54.34-pm.png  

Last edited by Chris Furman; 12-22-2015 at 12:55 PM.
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Old 12-22-2015, 01:20 PM   #670
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Quote:
Originally Posted by lagcisco View Post
I havent driven the xb2 yet but I swore I saw black grease on the thurst washer outside of the diff and opened the diff itself and saw clear diff grease on the diff balls.. now I'm second guessing myself and will take it apart tonight before break-in and run.
Yeah, I built 2 cars and there was a light coating of oil throughout the diffs, but no silicone grease on the ring or balls and no black grease on the thrust bearing. The nice thing is the thrust bearing is caged and it's huge compared to other ball diffs, it's a really nice ball diff. It's the only ball diff I've built that is as smooth as a kyosho ball diff. The gear diff is second to none though...
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Last edited by symmetricon; 12-22-2015 at 04:36 PM.
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Old 12-22-2015, 03:55 PM   #671
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We added the ball diffs to the 1st batch only. Our 2nd shipment of Carpet Edition kits is expected to arrive at our warehouse next week.

As XRAY has shown, the Dirt Edition parts and kits are still in production, but we are optimistic we will see them completed some time next month.

I also wanted to thank BentKa for his customer assistance in the XB2/XB4 threads.

- Bryan
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Old 12-22-2015, 04:34 PM   #672
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wonder if any gull wing arms are in the works....
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Old 12-22-2015, 05:44 PM   #673
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Quote:
Originally Posted by symmetricon View Post
Yeah, I built 2 cars and there was a light coating of oil throughout the diffs, but no silicone grease on the ring or balls and no black grease on the thrust bearing. The nice thing is the thrust bearing is caged and it's huge compared to other ball diffs, it's a really nice ball diff. It's the only ball diff I've built that is as smooth as a kyosho ball diff. The gear diff is second to none though...
Any advice as to a set of snap ring pliers that will work on these ball diffs? The set I have do not get close enough to get ring out.
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Old 12-22-2015, 06:14 PM   #674
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Quote:
Originally Posted by timannnn6 View Post
Any advice as to a set of snap ring pliers that will work on these ball diffs? The set I have do not get close enough to get ring out.
Mine where the same way. I took a Dremel to one of my snap ring pliers and all was good after.
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Old 12-22-2015, 06:17 PM   #675
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Oh dear, snap rings in ball diffs?
I hope they're not as awful to build as Durangos were...
That was a PITA design to say the least!
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