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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 08-19-2016, 11:27 AM   #3556
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Originally Posted by avaldes View Post
Bent, when you build your gear diffs, do you align the notches for the pin, or do you clock them 180deg from each other? I am referring to the molded bump on the case for the drive pins. Does this make sense?
can someone explain this? i thought there was only the notch on one side of the diff case, what are you aligning?
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Old 08-21-2016, 08:18 AM   #3557
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Originally Posted by lyons238 View Post
can someone explain this? i thought there was only the notch on one side of the diff case, what are you aligning?
Huh?? its a molded part that only goes in one way. confused as to what is being asked.

L
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Old 08-21-2016, 08:55 AM   #3558
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Huh?? its a molded part that only goes in one way. confused as to what is being asked.

L
yeah, thats what im confused about too, but bent answered this question and said yes he clocks them at 180 degrees. im confused also. unless he means the pins themself when he's building the gear diff on each side clock the pins to make a plus sign. but im not sure...
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Old 08-21-2016, 03:44 PM   #3559
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There is a "nub" on both the gear diff housing with the gear and on the other part, the cover. You can align these nubs as you see fit. I chose to clock them rather than align them. Here is a photo of the side of the case:
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Xray XB2 2WD Buggy Thread-gd_case.jpg   Xray XB2 2WD Buggy Thread-gd_cover.jpg  
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Old 08-21-2016, 05:34 PM   #3560
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ahh... never really looked at that.
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Old 08-22-2016, 06:37 AM   #3561
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Originally Posted by avaldes View Post
There is a "nub" on both the gear diff housing with the gear and on the other part, the cover. You can align these nubs as you see fit. I chose to clock them rather than align them. Here is a photo of the side of the case:
makes sense, thank you sir. i missed that while building.

the XB4 gear diffs aren't like that though, which is more important to me because I've been running a ball diff on my xb2 anyway, but my XB4 is all gear diffs.
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Old 08-22-2016, 04:47 PM   #3562
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Default Xb2 dirt edition set/up mods

Hi Guys just purchased a xb2 de to accompany my xb4 16 model.Ihave yet to drive to the xb2
What mods and and turn motor for 2wd mod would you recomend.
I will be using the car on lose dirt/clay. I can find many posts on here for dirt edition set up.
Also what are the parts I only need if I want to run a lay down transmission..

Thanks Mark from down under
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Old 08-22-2016, 04:54 PM   #3563
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Default Xb2 dirt edition set/up mods

Sorry cant find many dirt edition set up posts on here

Hi Guys just purchased a xb2 de to accompany my xb4 16 model.Ihave yet to drive to the xb2
What mods and and turn motor for 2wd mod would you recomend.
I will be using the car on lose dirt/clay. I can find many posts on here for dirt edition set up.
Also what are the parts I only need if I want to run a lay down transmission..

Thanks Mark from down under[/QUOTE]
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Old 08-22-2016, 06:11 PM   #3564
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Originally Posted by [email protected] View Post
Sorry cant find many dirt edition set up posts on here

Hi Guys just purchased a xb2 de to accompany my xb4 16 model.Ihave yet to drive to the xb2
What mods and and turn motor for 2wd mod would you recomend.
I will be using the car on lose dirt/clay. I can find many posts on here for dirt edition set up.
Also what are the parts I only need if I want to run a lay down transmission..

Thanks Mark from down under
[/QUOTE]

Try these sites for many setups: http://site.petitrc.com/setup/xray/S...tsXrayXB2.html

http://forum.teamxray.com/xsheets-search.php
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Old 08-23-2016, 12:01 AM   #3565
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Originally Posted by [email protected] View Post
Sorry cant find many dirt edition set up posts on here

Hi Guys just purchased a xb2 de to accompany my xb4 16 model.Ihave yet to drive to the xb2
What mods and and turn motor for 2wd mod would you recomend.
I will be using the car on lose dirt/clay. I can find many posts on here for dirt edition set up.
Also what are the parts I only need if I want to run a lay down transmission..

Thanks Mark from down under
[/QUOTE]

where abouts in Oz are you located ? my son is sponsored by HEI and Xray we are based out of Newcastle , but have ran a few times interstate and in Sydney . So may be able to give you some basic starting setups.
cheers Mark
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Old 08-23-2016, 12:10 AM   #3566
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Originally Posted by [email protected] View Post
Sorry cant find many dirt edition set up posts on here

Hi Guys just purchased a xb2 de to accompany my xb4 16 model.Ihave yet to drive to the xb2
What mods and and turn motor for 2wd mod would you recomend.
I will be using the car on lose dirt/clay. I can find many posts on here for dirt edition set up.
Also what are the parts I only need if I want to run a lay down transmission..

Thanks Mark from down under
[/QUOTE]
Im not running a laydown transmission, but as for motors im running a 7.5t motor in mine and for me i find thats plenty of power. Plus i run at Castle Hill in Sydney.
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Old 08-23-2016, 05:45 AM   #3567
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nvm
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Last edited by lyons238; 08-30-2016 at 10:18 AM.
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Old 08-23-2016, 09:05 AM   #3568
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https://www.amainhobbies.com/xray-co...366202/p404775

Is there another option other than these composite XRA366202 for mounting the servo? I found a two-pack with a different part number recently that said they fit XB4. Will they work on the XB2?
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Old 08-23-2016, 10:45 AM   #3569
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Originally Posted by ryan432greening View Post
https://www.amainhobbies.com/xray-co...366202/p404775

Is there another option other than these composite XRA366202 for mounting the servo? I found a two-pack with a different part number recently that said they fit XB4. Will they work on the XB2?
yes there is it's been discussed multiple times already, the alum servo mounts for the XB4 (the L style ones) fit the xb2 as well.
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Old 08-23-2016, 11:25 AM   #3570
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Originally Posted by ryan432greening View Post
https://www.amainhobbies.com/xray-co...366202/p404775

Is there another option other than these composite XRA366202 for mounting the servo? I found a two-pack with a different part number recently that said they fit XB4. Will they work on the XB2?
im using Avid servo mounts with no issue as well..

http://www.avidrc.com/product/5/acce...cessories.html
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