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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 11-30-2015, 12:13 PM   #286
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Quote:
Originally Posted by BentKa View Post
I'm not.

I'm taking time out of my personal time to answer questions on here.

I'm not paid to do so or encouraged to do so by anyone…..other than by users that want help and support.

I basically don't have the time to argue with every other poster on here.

I give my feedback, short and to the point and then move on.

Case closed.

If you don't like my feedback, me or my posts feel free to ignore my posts.

Posting on this forum trying to help the people on here is the least rewarding I could ever spend my time on to be honest……..sad but true.

PS! And I don't start by posting to cause a reaction and then go back and edit my posts to make me look better afterwards

Bent

I appreciate all the help/info you provide. It's to the point and brief. Thanks!
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Old 11-30-2015, 12:28 PM   #287
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Quote:
Originally Posted by symmetricon View Post
Woo hoo I'll hear as soon as RCAmerica has em... since I'm in texas I'll have mine the next day too!
Man your lucky! I hope it will be a available mid week so I can 2 day ship and hopefully race the car this Sunday(wishful thinking) haha
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Old 11-30-2015, 12:44 PM   #288
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Originally Posted by gticlay View Post
I appreciate all the help/info you provide. It's to the point and brief. Thanks!
I'll second this!
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Old 11-30-2015, 12:52 PM   #289
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+3
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Old 11-30-2015, 01:21 PM   #290
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Quote:
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PS! And I don't start by posting to cause a reaction and then go back and edit my posts to make me look better afterwards

Bent
oh, the edit wasn't for my benefit. Can we move on? Lets move on.
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Old 11-30-2015, 01:32 PM   #291
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Come on guys, we know the internet is no place for feelings. Let's get back to car talk. I was all excited about new info on the car. I will say you may not want to invest in such a fine machine if you're going to get hung up on RX antenna.
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Old 11-30-2015, 01:55 PM   #292
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oh, the edit wasn't for my benefit. Can we move on? Lets move on.
Why are you still editing your posts ?

First they can be misinterpreted and then you add text later on to make them look better…….

And for the original post……editing the post to: "I'll take the highroad" after first calling my post silly and coming down on "you and one other guy" (my daughter) in your original post wasn't to make you look better

The original poster questioning the lack of an antenna mount seemed okay with the answer I gave about what solution we have chosen for Malin's XB2 and my suggested solution to him having a receiver with an external antenna (which you left out in your reply).

Giving ME grief for Xray not manufacturing an antenna mount seams way off base to me


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Old 11-30-2015, 02:17 PM   #293
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Ok, I think I see what happened here.... there was a misunderstanding. I thought that you were part of the team that developed and engineered the car. Then when you were asked about the missing antenna mount, it read to me like you decided to not engineer the car with a way to mount one, because you personally don't run a receiver with an antenna... But this isn't the case, you're just a driver? My misunderstanding!
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Old 11-30-2015, 02:27 PM   #294
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Bent,
Any chance you could post a couple pictures of Malin's XB2 with the body off? All I have seen are with the body on. If you guys are running prototype parts and can't do it, that's understandable.
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Old 11-30-2015, 02:27 PM   #295
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fwiw - the d413 uses a mount that holds the rx and antenna on a pretty small piece . Makes life easy to remove and put back , but its not the cheapest thing unless you find it at a chop shop
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Old 11-30-2015, 02:31 PM   #296
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Quote:
Originally Posted by Cpt.America View Post
Ok, I think I see what happened here.... there was a misunderstanding. I thought that you were part of the team that developed and engineered the car. Then when you were asked about the missing antenna mount, it read to me like you decided to not engineer the car with a way to mount one, because you personally don't run a receiver with an antenna... But this isn't the case, you're just a driver? My misunderstanding!
My daughter, Malin, is on the Xray Factory Team yes, I'm her dad and does all the wrenching for her.

And yes we test parts and vehicles for Xray, Hudy, FX engines, ORCA, JConcepts, G-Force ++++

We've been running prototypes of the XB2 for close to 2 years now and we give feedback to the designer, Martin Bayer, as well as to co-designer Juraj Hudy (owner of Xray).

I'm on here to try and answer peoples questions and offer support in my own free time…….time I would rather spend with family and friends to be honest.

If I where to argue with every single poster here having a different opinion than mine I would need a lot more hours in my day.

That's why I'm short and to the point when answering.

The reason for not having an antenna mount on the XB2 is that this is a racer's car.

Xray design, develop and manufacture race vehicles and 99% of the racers doesn't use an antenna anymore.

To spend tens of thousands of $ to design, test, manufacture moulds and produce parts that 99% of the buyers won't use is just not very good business sense.

Xray strive to be at the forefront of development and all of the major manufacturers of radio systems now have receivers without external antenna for use with electric vehicles.

That's the current trend

That's the long answer

Does that make you more happy

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Last edited by BentKa; 11-30-2015 at 02:53 PM.
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Old 11-30-2015, 02:39 PM   #297
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Antennas are soooooo 90's anyways.
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Old 11-30-2015, 02:41 PM   #298
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Bent,
Any chance you could post a couple pictures of Malin's XB2 with the body off? All I have seen are with the body on. If you guys are running prototype parts and can't do it, that's understandable.
There are several pictures of Malin's XB2 with the body off on her page (link in my signature) as well as the latest setup used at the EOS race

As for right now we have a couple of parts mounted that's not released yet, but we are very close to running an out of the box car

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Old 11-30-2015, 02:41 PM   #299
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Not to extend the antenna thing, but I believe that you are required to run an antenna at ROAR sanctioned national events. At least that was the explanation given to me as to why the pros run them at some races.
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Old 11-30-2015, 02:49 PM   #300
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Quote:
Originally Posted by gticlay View Post
Not to extend the antenna thing, but I believe that you are required to run an antenna at ROAR sanctioned national events. At least that was the explanation given to me as to why the pros run them at some races.
I personally have no clue about the ROAR rules as we run according to the EFRA (European) rules in national races as well as European Championships and the IFMAR (International) rules at World Championships and neither have rules requiring an external antenna

Might be a requirement in the US though ?
Anybody know for sure ?

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