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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 11-07-2016, 04:51 AM   #4021
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To prevent the steering linkage from disconnecting in a crash you may use the optional universal ball with backstop. Follow the instructions below.





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Old 11-07-2016, 02:54 PM   #4022
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Quote:
Originally Posted by billsharp34 View Post
Would like to know what the changes were u made
I changed the front oil to losi 35. Rear oil to losi 30. Moved the front shocks out on the arm to the outer position, 2mm limiters in the front shocks, middle hole in the rear hubs for camber link
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Old 11-07-2016, 03:05 PM   #4023
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I changed the front oil to losi 35. Rear oil to losi 30. Moved the front shocks out on the arm to the outer position, 2mm limiters in the front shocks, middle hole in the rear hubs for camber link
Thank you
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Old 11-07-2016, 03:10 PM   #4024
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The car feels soft on the bench with that shock setup, but it worked well on the track and didn't bottom out on any of the jumps
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Old 11-11-2016, 12:32 PM   #4025
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Just wondering if there's a battery strap similar to the B6 for the XB2? Reason I'm asking is because I have Orion 3800 and they're about 7mm thinner then the 4500's and was wondering what people are doing. I guess I can place a small piece of foam at the underside of the strap.
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Old 11-11-2016, 12:43 PM   #4026
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Quote:
Originally Posted by daveb View Post
Just wondering if there's a battery strap similar to the B6 for the XB2? Reason I'm asking is because I have Orion 3800 and they're about 7mm thinner then the 4500's and was wondering what people are doing. I guess I can place a small piece of foam at the underside of the strap.
We use a mall piece of foam

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Old 11-11-2016, 12:44 PM   #4027
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Quote:
Originally Posted by daveb View Post
Just wondering if there's a battery strap similar to the B6 for the XB2? Reason I'm asking is because I have Orion 3800 and they're about 7mm thinner then the 4500's and was wondering what people are doing. I guess I can place a small piece of foam at the underside of the strap.
You can get weatherstripping foam from a hardware store with an adhesive back for real cheap... stick it to the battery strap and done. If you need to take it off for some reason, it only cost you a quarter.
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Old 11-11-2016, 06:13 PM   #4028
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I just use foam when I run the light skinny packs..
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Old 11-14-2016, 06:05 PM   #4029
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Couple of questions, has anyone had the front hinge pins slowly work there way out? Seems like the 1.5mm screws that hold them in place do not seem to cover the hinge pins enough. Also, does xray make a aluminum shock caps for the car? Also I'm running the rear shocks on the front of the rear arms, what i get more rear traction running them on the rear of the car? One last question, the carbon fiber chassis says it's supposed to increase traction, anyone confirm this and does the carbon chassis bolt right to the 17 edition car?
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Old 11-14-2016, 06:49 PM   #4030
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Quote:
Originally Posted by tony montana View Post
Couple of questions, has anyone had the front hinge pins slowly work there way out? Seems like the 1.5mm screws that hold them in place do not seem to cover the hinge pins enough.

- problem since inception. Shim them with a small washer. Kyosho make one that fit perfect.

Also, does xray make a aluminum shock caps for the car? Also I'm running the rear shocks on the front of the rear arms, what i get more rear traction running them on the rear of the car?

- people used exotek. Stated that were subject to leakage. The kit can get cross threaded easily. Buy extra. Soak oring in shock oil before installing

One last question, the carbon fiber chassis says it's supposed to increase traction, anyone confirm this and does the carbon chassis bolt right to the 17 edition car?
I answered your questions in the body of your email above...

Also, Xray factory carbon adds a lot of grip. I can attest to this. 16-17 same chassis. I've run mine 5-6 times with it and it was night and day different in medium grip clay. The other aftermarket brands are the opposite, they take away flex. I have a loaded 3 gear laydown xb2 loaded I may be selling with carbon if you're interested in a laydown capable of lower grip. Been too lazy to list it. The carbon enabled me to run the laudown with shocks in front with a gear diff on medium bite. Btw - if you can have adequate traction with shocks in front, I find that is the way to go. Way better rotation.
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Old 11-16-2016, 05:37 PM   #4031
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I bought a used Xb2 and I'm rebuilding it to run on carpet. I found a basic carpet setup that Martin Bayer posted. My question is that the length (bottom of body to top of eyelet) of the rear shock calls for 32mm. Is that right? The amount of exposed threads becomes 3 mm when the manual calls for that to vary from 1-1.5mm
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Old 11-16-2016, 08:36 PM   #4032
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Quote:
Originally Posted by BentKa View Post
To prevent the steering linkage from disconnecting in a crash you may use the optional universal ball with backstop. Follow the instructions below.





Bent
Thanks for this! I've popped the steering turnbuckle too many times to count. Even on mild contact with a pipe. So far i have been lucky and found the turnbuckle each time. ordering parts now to eliminate the issue.
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Old 11-17-2016, 01:10 PM   #4033
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Anyone find stock of the 17 update parts in the USA yet on-line?
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Old 11-17-2016, 01:13 PM   #4034
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https://www.facebook.com/Scvrc/

These guys always have stuff in stock. Sell on ebay sometimes too. Can't recall the ebay shop name. Last i checked they had all the parts.

Quote:
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Anyone find stock of the 17 update parts in the USA yet on-line?
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Old 11-17-2016, 06:49 PM   #4035
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Are the 17 and 16 edition carpets cars chassis's the same?
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