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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 09-22-2016, 11:39 PM   #3721
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Quote:
Originally Posted by Marvel View Post
Bent, thanks for follow up on tire / wheels. Is a front sway bar option something that will be looked at in the near future. I also notice not too many people seem to be running rear sway bar on the XB2 on high grip carpet, wondering why that may be.
Because running only a rear swaybar doesn't improve the handling over a well balanced setup.

We're constantly testing and working to improve the XB2 on all surfaces

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Old 09-22-2016, 11:40 PM   #3722
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Quote:
Originally Posted by EricW View Post
Any idea what the price point is for the 3 gear? I'd like to get one for my 2016.
No prices yet for the parts, but they should be similar in price as the current parts.

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Old 09-22-2016, 11:41 PM   #3723
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Quote:
Originally Posted by billsharp34 View Post
With the longer shock ends are people just using them on the rear of the car or both I have the dirt car and run on clay
On everything except for absolutely flat tracks we usually run them front and rear.

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Old 09-22-2016, 11:58 PM   #3724
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Quote:
Originally Posted by lyons238 View Post
Bent, what is the team using on med-high bite clay? My track is like cement, sometimes rough spots develop and sometimes it gets dusty, but the main of it is very hard cement like clay. not the smooth shiny hard clay, i think you get it...tires we use slicks or electrons super soft when the layout is new.

but are you using the CE car with a ball diff or the DE car in such conditions.
Usually 3 gear laydown with ball diff, RF holder in brass, low profile shorty with weight plate in the middle or back.

If the grip is on the lower side we also use the carbon chassis and play with softer composites, mainly for arms, uprights etc.

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Old 09-23-2016, 12:11 AM   #3725
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low profile shorty with the DE helps a lot. I put a 25 gram weight pushed all the way forward. Car still has equivalent of 190 gram battery but low profile and spread over greater footprint, helps with cornering eliminating a lot of push. Dirt car especially likes the slim shorty for me.
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Old 09-23-2016, 08:35 AM   #3726
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rear motor option for 2017 XB2 DE?
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Old 09-23-2016, 11:35 AM   #3727
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Will XRAY be releasing a front sway bar option and also slim front wheels such as the schumacher or jconcepts in the future.
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Old 09-23-2016, 12:02 PM   #3728
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Quote:
Originally Posted by Pinkz View Post
rear motor option for 2017 XB2 DE?
Release of an updated XB2 DE is still a few months off so you will have to wait a bit longer to find out.....sorry

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Old 09-23-2016, 12:07 PM   #3729
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Quote:
Originally Posted by Marvel View Post
Will XRAY be releasing a front sway bar option and also slim front wheels such as the schumacher or jconcepts in the future.
No immediate plans for slim front wheels.

As it only takes 3-4 seconds to cut them down with a pair of curved body scissors and the volume is not high enough for the moment it's not a priority.

As for front swaybar for XB2 all I can say is we are constantly testing new options to improve the performance of the XB/XT platform

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Old 09-23-2016, 03:18 PM   #3730
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Quote:
Originally Posted by BentKa View Post
No immediate plans for slim front wheels.

As it only takes 3-4 seconds to cut them down with a pair of curved body scissors and the volume is not high enough for the moment it's not a priority.

As for front swaybar for XB2 all I can say is we are constantly testing new options to improve the performance of the XB/XT platform

Bent
Is the new 2017 4wd coming out too? Is it way different than the current one? I'm in the market to getting a 4wd and was wondering if I should wait for it or just buy the current one then do the upgrades. I already own both xb2 ce and de and a happy owner.
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Old 09-23-2016, 04:43 PM   #3731
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Just seen the first prices of the Xray 2017 in the UK. A 60 ($78) increase in purchase price.

What's so different in the 2017 kit compared to the 2016 kit to warrant this jump in price.

Cheers.
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Old 09-23-2016, 05:13 PM   #3732
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Part number for the new car and truck are on xrays site.
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Old 09-23-2016, 05:30 PM   #3733
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Also the 3 gear trans case part number is there also.
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Old 09-23-2016, 09:01 PM   #3734
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Linky???
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Old 09-24-2016, 05:39 PM   #3735
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Anyone have a really good dirt edition set up for medium to low grip dirt?
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