R/C Tech Forums

Go Back   R/C Tech Forums > General Forums > Electric Off-Road

    Hide Wikipost
Old 12-26-2016, 07:51 PM   -   Wikipost
R/C Tech Forums Thread Wiki: Official Xray XB2 2WD Buggy Thread
Please read: This is a community-maintained wiki post containing the most important information from this thread. You may edit the Wiki once you have been a member for 90 days and have made 90 posts.
 
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

Print Wikipost

Like Tree23Likes
Reply
 
Thread Tools Search this Thread
Old 04-25-2016, 11:42 AM   #2836
Tech Elite
 
Join Date: Sep 2002
Location: Austin, Tx
Posts: 2,036
Trader Rating: 33 (100%+)
Default

Alu Front Lower Arm Mount 23/29 Kick-Up 322313

need to use this as well..

Alu Front Lower Arm Mount 23/29 Kick-Up Brace 321211
__________________
Daniel Grobe
----------------------
Sponsors:
Proline Racing / RC America / Xray
dgrobe2112 is offline   Reply With Quote
Old 04-25-2016, 12:30 PM   #2837
Tech Initiate
R/C Tech Elite Subscriber
 
Join Date: Apr 2016
Posts: 35
Trader Rating: 2 (100%+)
Default

Ive tried everything u guys are mentioning..I've glued my diff ring down tried a new diff ect.. Dude this car is frustrating I feel like selling it
_jk79782 is offline   Reply With Quote
Old 04-25-2016, 12:35 PM   #2838
Tech Elite
 
Join Date: Sep 2002
Location: Austin, Tx
Posts: 2,036
Trader Rating: 33 (100%+)
Default

your in the DE car? what is the issue?
__________________
Daniel Grobe
----------------------
Sponsors:
Proline Racing / RC America / Xray
dgrobe2112 is offline   Reply With Quote
Old 04-25-2016, 12:38 PM   #2839
Tech Initiate
R/C Tech Elite Subscriber
 
Join Date: Apr 2016
Posts: 35
Trader Rating: 2 (100%+)
Default

I have no rear traction .. I keep spinning out like crazy.. I've tried every set possible..
_jk79782 is offline   Reply With Quote
Old 04-25-2016, 12:39 PM   #2840
Tech Initiate
R/C Tech Elite Subscriber
 
Join Date: Apr 2016
Posts: 35
Trader Rating: 2 (100%+)
Default

yes I have the dirt edition xb2 .. Any advice
_jk79782 is offline   Reply With Quote
Old 04-25-2016, 12:39 PM   #2841
Tech Elite
 
Join Date: Sep 2002
Location: Austin, Tx
Posts: 2,036
Trader Rating: 33 (100%+)
Default

are you in the Carpet or Dirt car? on power.. off power? whats the track? clay? carpet? outdoor? i am running a gear diff btw..
__________________
Daniel Grobe
----------------------
Sponsors:
Proline Racing / RC America / Xray
dgrobe2112 is offline   Reply With Quote
Old 04-25-2016, 12:41 PM   #2842
Tech Initiate
R/C Tech Elite Subscriber
 
Join Date: Apr 2016
Posts: 35
Trader Rating: 2 (100%+)
Default

im running a ball diff on clay . Indoors by the way.. And it's on power when I'm making a turn or coming out of a corner
_jk79782 is offline   Reply With Quote
Old 04-25-2016, 12:52 PM   #2843
Suspended
 
Join Date: Jan 2011
Posts: 4,124
Trader Rating: 61 (100%+)
Default

Quote:
Originally Posted by _jk79782 View Post
im running a ball diff on clay . Indoors by the way.. And it's on power when I'm making a turn or coming out of a corner
Pictures of the car please.

What motor? What turn is it? What ESC...Where is your battery placed? What setup is on the car?

Any binding on the rear suspension? What servo? are your EPA's set?
__________________
Best Avatar on rc-tech
Socket is offline   Reply With Quote
Old 04-25-2016, 12:58 PM   #2844
Tech Elite
 
seth556's Avatar
 
Join Date: May 2005
Location: Orlando, FL
Posts: 2,200
Trader Rating: 42 (100%+)
Default

Quote:
Originally Posted by _jk79782 View Post
I have no rear traction .. I keep spinning out like crazy.. I've tried every set possible..
If it's "spinning out like crazy" then you most likely have something wrong other than your setup. Go through the car and make sure everything is free, nothing binding, and everything is put together the way it should be. With 4* of rear toe stock, you shouldn't be having rear traction issues.

This is assuming you have the correct tires and driving in a similar manner to other drivers on your track that aren't having issues.
seth556 is offline   Reply With Quote
Old 04-25-2016, 01:11 PM   #2845
JAE
Tech Master
 
Join Date: Jun 2015
Posts: 1,768
Trader Rating: 26 (100%+)
Default

He should be having NO issues with traction with slicks at SCVRC. Something must be wrong. I don't have my DE done yet, but I drove someone elses and it was fine. no issues. Eric even has a CE, and he doesn t seem to have issues
__________________
JAE
JAE is offline   Reply With Quote
Old 04-25-2016, 01:18 PM   #2846
Tech Initiate
R/C Tech Elite Subscriber
 
Join Date: Apr 2016
Posts: 35
Trader Rating: 2 (100%+)
Default

Quote:
Originally Posted by Socket View Post
Pictures of the car please.

What motor? What turn is it? What ESC...Where is your battery placed? What setup is on the car?

Any binding on the rear suspension? What servo? are your EPA's set?
i don't know how to upload pictures yet but and I'm running a black ox 410r with a reedy 8.5 t motor. My batter is in the rear..I'm runimg zero anti squat with 2.5 caster inserts. Batt is in the rear. I run slicks and microns. Ride height is 22. Shock worthy is 30 in the front and 27 in rear. 81/23 gearing..protect servo and my epa are set
_jk79782 is offline   Reply With Quote
Old 04-25-2016, 01:29 PM   #2847
Tech Elite
 
Join Date: Sep 2002
Location: Austin, Tx
Posts: 2,036
Trader Rating: 33 (100%+)
Default

sounds to me.. you getting too much throttle in the corner.. or esc is putting too much to the wheels too early in throttle pull..

but also..

i think right height is a little high.. you should be around 18 or 19..

are you running any kind of boost.. or anything on the ESC.. also.. your radio.. try readjusting your high and low points.. and such on the radio..

on my radio.. i use a negative throttle curve.. for getting on the gas hard.. you could also try current limit.. I dont know much about that speedo..

what about your slipper.. is it set correctly.. if its not correct or locked.. then you could have issues as well..

here is what i would do if i was in the pit with you.. to look over everthing.. no binding.. mark your diff rings.. to see if they are slipping.. make sure you dont have a broken diff bolt or diff nut.

#2, reset your model on the radio..
#3, reset your esc to factory settings
#4, recalibrate your ESC to the radio
#5, reset your steering trims.. and EPA so its not too far..
#6, put the rear end back to stock pills.. and stock setup
#7, loosen up your slipper just to make sure it slips before the diff slips also.. so it slips on the track.. then have a buddy tighten it up a little at a time on the track while your driving it..
__________________
Daniel Grobe
----------------------
Sponsors:
Proline Racing / RC America / Xray

Last edited by dgrobe2112; 04-25-2016 at 01:42 PM.
dgrobe2112 is offline   Reply With Quote
Old 04-25-2016, 01:36 PM   #2848
Suspended
 
Join Date: Jan 2011
Posts: 4,124
Trader Rating: 61 (100%+)
Default

Quote:
Originally Posted by _jk79782 View Post
i don't know how to upload pictures yet but and I'm running a black ox 410r with a reedy 8.5 t motor. My batter is in the rear..I'm runimg zero anti squat with 2.5 caster inserts. Batt is in the rear. I run slicks and microns. Ride height is 22. Shock worthy is 30 in the front and 27 in rear. 81/23 gearing..protect servo and my epa are set
Go to imgur.com and you can upload pics right from your phone or computer.

Zero anti squat is very interesting, why are you running zero?

What springs?

What rear toe?

Is your slipper set correctly?
__________________
Best Avatar on rc-tech
Socket is offline   Reply With Quote
Old 04-25-2016, 01:57 PM   #2849
Tech Initiate
R/C Tech Elite Subscriber
 
Join Date: Apr 2016
Posts: 35
Trader Rating: 2 (100%+)
Default

Quote:
Originally Posted by dgrobe2112 View Post
sounds to me.. you getting too much throttle in the corner.. or esc is putting too much to the wheels too early in throttle pull..

but also..

i think right height is a little high.. you should be around 18 or 19..

are you running any kind of boost.. or anything on the ESC.. also.. your radio.. try readjusting your high and low points.. and such on the radio..

on my radio.. i use a negative throttle curve.. for getting on the gas hard.. you could also try current limit.. I dont know much about that speedo..

what about your slipper.. is it set correctly.. if its not correct or locked.. then you could have issues as well..

here is what i would do if i was in the pit with you.. to look over everthing.. no binding.. mark your diff rings.. to see if they are slipping.. make sure you dont have a broken diff bolt or diff nut.

#2, reset your model on the radio..
#3, reset your esc to factory settings
#4, recalibrate your ESC to the radio
#5, reset your steering trims.. and EPA so its not too far..
#6, put the rear end back to stock pills.. and stock setup
#7, loosen up your slipper just to make sure it slips before the diff slips also.. so it slips on the track.. then have a buddy tighten it up a little at a time on the track while your driving it..
I'll go ahead and try these things when I get home
_jk79782 is offline   Reply With Quote
Old 04-25-2016, 01:59 PM   #2850
Tech Initiate
R/C Tech Elite Subscriber
 
Join Date: Apr 2016
Posts: 35
Trader Rating: 2 (100%+)
Default

Quote:
Originally Posted by Socket View Post
Go to imgur.com and you can upload pics right from your phone or computer.

Zero anti squat is very interesting, why are you running zero?

What springs?

What rear toe?

Is your slipper set correctly?
The zero anti squat was for more rear traction. Springs and toe are stock
_jk79782 is offline   Reply With Quote
Reply



Currently Active Users Viewing This Thread: 3 (0 members and 3 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off



All times are GMT -7. It is currently 03:50 AM.


Powered By: vBulletin v3.9.2.1
Privacy Policy | Terms of Use | Advertise Content © 2001-2011 RCTech.net