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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 10-05-2016, 07:06 AM   #3781
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New XB2 2017 Carpet Edition kits!


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Old 10-05-2016, 07:42 AM   #3782
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That's not fair, you have the actual kits and we cant even see the specs of it on the website
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Old 10-05-2016, 08:37 AM   #3783
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Quote:
Originally Posted by jmcelroy42 View Post
That's not fair, you have the actual kits and we cant even see the specs of it on the website
Luckily for you we sell them

We always have kits first.. advantage of being close to the factory. Sorry!
They're looking nice though!
Dirt edition will probably be in a few months, just like last year.
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Old 10-05-2016, 03:15 PM   #3784
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Quote:
Originally Posted by BentKa View Post
The steering blocks are the same left to right and they are injection molded so there's no way you have can have a steering block with 2 sides being the same

They all have 1 flat side and one beveled side.
Beveled side goes to the inside and flat side to the outside

Bent
Yeah, thats what I didnt really see in the manual was flat side out, It;s fixed, and the car after a long tuning session is getting really good. Just need to add more rear suspension, it's slapping pretty bad, have some springs, and the longer eyelets on the way. I'd just like for it to not bounce around so much.
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Old 10-05-2016, 03:26 PM   #3785
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So what's new? Same chassis?
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Old 10-06-2016, 12:47 AM   #3786
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Had the same problem when I first bought the car 5 months ago. Did you try the schelle machined Pistons 2x1.6 and 2x1.7). the stock Pistons require much higher weight oil than I was accustomed from other buggies. With the dirt car I seemed to always settle on 2 dot rears no matter how many different springs I tried.. Some stick with the kit 1 dot front. 2 dot front is good to on high bite. My favorite were kyosho gold fronts, 2 dot rear. Yokomo orange and AE gray are good too with the 2 dot rear. My 2 cents. The long eyelets on the rear helped but with the dirt car I felt it pushed too much so switched back to kit.

Quote:
Originally Posted by jpcopeland1 View Post
Yeah, thats what I didnt really see in the manual was flat side out, It;s fixed, and the car after a long tuning session is getting really good. Just need to add more rear suspension, it's slapping pretty bad, have some springs, and the longer eyelets on the way. I'd just like for it to not bounce around so much.
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Old 10-06-2016, 12:53 AM   #3787
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Quote:
Originally Posted by Poppin Fresh View Post
So what's new? Same chassis?
Chassis is the same.

3 gear laydown gear box is new along with new 2 hole 1.6 and 1.7 pistons

Still comes with medium and hard plastics as well as the 4 gear laydown gearbox included.

Bent
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Old 10-06-2016, 02:43 AM   #3788
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Quote:
Originally Posted by BentKa View Post
Chassis is the same.

3 gear laydown gear box is new along with new 2 hole 1.6 and 1.7 pistons

Still comes with medium and hard plastics as well as the 4 gear laydown gearbox included.

Bent
can't wait to get 2 of those 3 gear laydown transmission assy. for my CE and DE.
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Old 10-06-2016, 08:24 AM   #3789
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Quote:
Originally Posted by BentKa View Post
Chassis is the same.

3 gear laydown gear box is new along with new 2 hole 1.6 and 1.7 pistons

Still comes with medium and hard plastics as well as the 4 gear laydown gearbox included.

Bent
Wow, can't wait to run indoor high grip with this new laydown gearbox. I'm glad they kept the chassis the same.
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Old 10-06-2016, 10:57 AM   #3790
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Quote:
Originally Posted by JAE View Post
Had the same problem when I first bought the car 5 months ago. Did you try the schelle machined Pistons 2x1.6 and 2x1.7). the stock Pistons require much higher weight oil than I was accustomed from other buggies. With the dirt car I seemed to always settle on 2 dot rears no matter how many different springs I tried.. Some stick with the kit 1 dot front. 2 dot front is good to on high bite. My favorite were kyosho gold fronts, 2 dot rear. Yokomo orange and AE gray are good too with the 2 dot rear. My 2 cents. The long eyelets on the rear helped but with the dirt car I felt it pushed too much so switched back to kit.
Using Schelle Machined pistons. No push problem at all, just need to figure out oil, spring combos. Have sets from all the major manufacturers, just a matter of getting the right amount of rear pack. long eyelets came yesterday for the rear only, would cause too much front droop. One more good tuning day, and I should have to car right where I want it. Do need to get some snap ring pliers so I can redo the thrust bearing, the diff feels gritty although it hasn't slipped (used the AE diff spring and glued rings so I can get it tight).
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Old 10-06-2016, 04:16 PM   #3791
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Can you install a laydown transmission on the dirt edition just like the B6 ?

Last edited by Phillip F; 10-06-2016 at 05:13 PM.
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Old 10-06-2016, 05:29 PM   #3792
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I am trying to choose a new buggy, and while one track near me is going carpet, there is also a dirt track going up. So if not sure which kit to buy, and i'd like to be able to setup car to run either . . . is it cheaper to get carpet and get the parts to convert, or vice versa? To be honest I am leaning towards the dirt version if I can simply convert it to laydown if I need it.


any thoughts?
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Old 10-06-2016, 06:25 PM   #3793
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Quote:
Originally Posted by Phillip F View Post
Can you install a laydown transmission on the dirt edition just like the B6 ?
Yes, there is a parts list in the wiki that tells you what parts, and hardware you need to convert.
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Old 10-06-2016, 06:30 PM   #3794
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Quote:
Originally Posted by mupchu View Post
I am trying to choose a new buggy, and while one track near me is going carpet, there is also a dirt track going up. So if not sure which kit to buy, and i'd like to be able to setup car to run either . . . is it cheaper to get carpet and get the parts to convert, or vice versa? To be honest I am leaning towards the dirt version if I can simply convert it to laydown if I need it.


any thoughts?
If your dead set on the XB2, I would get the parts to convert for whatever track condition your running on. I'm still dialing mine for medium bite dry clay, but once it gets colder my local track will be high enough bite that I can convert it to a Carpet car for a few months. Having one that can do other with a simple gearbox change (RB6.6, B6. XB2) would be what I would be looking at.
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Old 10-07-2016, 07:48 AM   #3795
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Parts needed to convert XB2 CE from a 4 gear laydown to a 3 gear setup:
  • Gearbox #323014
  • Motorplate #324012
  • 36T idler gear #324236
  • Brace for waterfall #324031

Bent
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