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R/C Tech Forums Thread Wiki: 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 09-06-2016, 03:15 PM   #3646
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Default First run with the xb2 ce

So... I was at the track to setup the new buggy. I bought it from a member here. Thanks Stephen. I don't know why people have problems with steering with their ce buggy but my buggy has tons of steering once I change the springs to AE whites in front and green at the rear. I think Stephen did a great job assembling the kit. Props to Stephen.. Yep yep.
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Old 09-06-2016, 03:23 PM   #3647
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Quote:
Originally Posted by Phillip F View Post
So... I was at the track to setup the new buggy. I bought it from a member here. Thanks Stephen. I don't know why people have problems with steering with their ce buggy but my buggy has tons of steering once I change the springs to AE whites in front and green at the rear. I think Stephen did a great job assembling the kit. Props to Stephen.. Yep yep.
Thanks man, enjoy your new kit! Keep tuning it and get the CE to work well on clay. Steering is definitely not a problem on ANY XRAY car, at least in my experience.

By the way Phil, keep an eye on that ball diff. I did break it in, but I did not hit the track with it. I broke it in in my basement and I did break it in for a while, but running it on the track may have it loosen up a tad more, or maybe not. Listen for a barking noise and also feel the tension with your hands when spinning the wheels while the car is in the air. You may want to tighten it 1/16 to 1/8 of a turn depending on results.

Also, I built it with an AE spring and glued rings as recommended by many experience members here. This basically helps give you some more adjust ability because people were bottoming the stock spring out, and makes it more consistent by not allowing the rings to slip. So the diff should be money!
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Old 09-06-2016, 04:54 PM   #3648
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I think my my steering problem is misconstrued. The xray's, I have 3, all have great steering in general. The xb2's I have, have super tight turning radius' etc. It's the mid corner, on power push and pop out of the corner that feels like it needs some work. Could be some setup issues as i have both buggies with a little excessive roll for a lower grip track i frequent that may be causing most the issues. great car no doubt, but could get it more dialed.... the xb4 on the other hand has the most wicked steering ever.
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Old 09-06-2016, 05:32 PM   #3649
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Originally Posted by lyons238 View Post
Thanks man, enjoy your new kit! Keep tuning it and get the CE to work well on clay. Steering is definitely not a problem on ANY XRAY car, at least in my experience.

By the way Phil, keep an eye on that ball diff. I did break it in, but I did not hit the track with it. I broke it in in my basement and I did break it in for a while, but running it on the track may have it loosen up a tad more, or maybe not. Listen for a barking noise and also feel the tension with your hands when spinning the wheels while the car is in the air. You may want to tighten it 1/16 to 1/8 of a turn depending on results.

Also, I built it with an AE spring and glued rings as recommended by many experience members here. This basically helps give you some more adjust ability because people were bottoming the stock spring out, and makes it more consistent by not allowing the rings to slip. So the diff should be money!
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Old 09-06-2016, 05:50 PM   #3650
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Quote:
Originally Posted by Phillip F View Post
So... I was at the track to setup the new buggy. I bought it from a member here. Thanks Stephen. I don't know why people have problems with steering with their ce buggy but my buggy has tons of steering once I change the springs to AE whites in front and green at the rear. I think Stephen did a great job assembling the kit. Props to Stephen.. Yep yep.
Most of the steering issue I and other have had are on carpet/astro where there is a dominantly proportioned amount of traction to the rear of the car, rather than the front. The rear has so much grip that it actually pushes the front. I can get the car to turn great if I mash the breaks and get the rear loose, but thats not fast nor equally repeatable. So yes, the car does have a lack of steering, just not on your surface.
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Old 09-06-2016, 07:13 PM   #3651
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Just saw this...can't wait.

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Old 09-06-2016, 07:42 PM   #3652
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Just saw this...can't wait.

shut the front door... A Finnisher body for the XB2.... EPIC!!! I'll buy 5.
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Old 09-06-2016, 08:21 PM   #3653
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Quote:
Originally Posted by Phillip F View Post
shut the front door... A Finnisher body for the XB2.... EPIC!!! I'll buy 5.
Pretty sure the S1 would signify a Silencer body
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Old 09-06-2016, 11:00 PM   #3654
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Originally Posted by EricW View Post
Pretty sure the S1 would signify a Silencer body
Eh.... that's okay.. I'll get 1 then. haha
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Old 09-07-2016, 04:30 AM   #3655
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Looks like that S2 body has a bump out for the spur which is nice.

Last edited by RobsRacin; 09-08-2016 at 04:36 AM.
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Old 09-07-2016, 05:14 AM   #3656
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JConcepts will have 2 different styles of bodies for the XB2

As well as front and rear wings.

Bent
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Old 09-07-2016, 10:07 AM   #3657
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3 gear release update? Sorry, had to ask. Anxiously waiting...
Quote:
Originally Posted by BentKa View Post
JConcepts will have 2 different styles of bodies for the XB2

As well as front and rear wings.

Bent
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Old 09-07-2016, 01:41 PM   #3658
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the S1 is the Stickit-1 decal for the guys that made the stickers....
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Old 09-07-2016, 02:00 PM   #3659
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Quote:
Originally Posted by punkracer24 View Post
the S1 is the Stickit-1 decal for the guys that made the stickers....
Its an S2 body though, just like they have for a bunch of the other cars. Pretty clear to see that from the pics.
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Old 09-07-2016, 02:04 PM   #3660
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Originally Posted by RobsRacin View Post
Its an S2 body though, just like they have for a bunch of the other cars. Pretty clear to see that from the pics.
Looks just like the other S2 bodies hopefully distribution picks these bodies up so that they are readily available! While there is nothing wrong with the stock body I would like to try something different!
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