R/C Tech Forums

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

Like Tree45Likes
Reply
 
Thread Tools Search this Thread
Old 06-21-2015, 08:35 PM   #8476
Tech Master
 
suby723's Avatar
 
Join Date: May 2011
Location: Spring Hill Tennessee
Posts: 1,377
Trader Rating: 21 (100%+)
Default

I am very happy with 1.6 front and 1.7 rear. I drilled the blank pistons and have been working great.
suby723 is offline   Reply With Quote
Old 06-22-2015, 07:09 AM   #8477
Tech Apprentice
 
Join Date: Feb 2015
Location: Florida
Posts: 58
Trader Rating: 1 (100%+)
Default

Quote:
Originally Posted by RC America View Post
The smallest XRAY spur for the slipper is a 75T. If using the center diff, the smallest available is a 78T.

- Bryan
Ae Spurs work 69-87 you just have to drill or team them out a bit!
__________________
Team driver for: AssassinRC & Fierce RC Solutions (Fiercercsolutions.com) (http://www.facebook.com/FierceRCSolutions)
Tekno sct410, X-ray xb-4 '14,
Powered by Hobbywing, spectrum, hitech, tekin,
Local track: FZRC Florida
iceman_bigb is offline   Reply With Quote
Old 06-22-2015, 07:17 AM   #8478
Tech Master
 
Join Date: Apr 2014
Location: Somewhere
Posts: 1,239
Trader Rating: 32 (100%+)
Default

Quote:
Originally Posted by suby723 View Post
I am very happy with 1.6 front and 1.7 rear. I drilled the blank pistons and have been working great.
What size of drill when you drilling blank piston?
raved007 is offline   Reply With Quote
Old 06-22-2015, 07:13 PM   #8479
Tech Master
 
suby723's Avatar
 
Join Date: May 2011
Location: Spring Hill Tennessee
Posts: 1,377
Trader Rating: 21 (100%+)
Default

Quote:
Originally Posted by raved007 View Post
What size of drill when you drilling blank piston?
1/16 is 1.6 and #52 is 1.7
suby723 is offline   Reply With Quote
Old 06-22-2015, 10:27 PM   #8480
Tech Elite
 
Dusttt's Avatar
 
Join Date: Dec 2009
Location: Lake Forest
Posts: 2,303
Trader Rating: 123 (100%+)
Default

Anyone running the xray aluminum rear hubs? The offset pivot pin and the fact that the hubs are narrower than the stock plastic is throwing me off. What's the set up? It seems to me it would have been best if the hubs came with a couple more spacers and pins with the notch in the center.
__________________
"Whiskey Tango Foxtrot"
Dusttt is offline   Reply With Quote
Old 06-24-2015, 09:05 PM   #8481
Tech Regular
 
Join Date: Mar 2014
Posts: 254
Trader Rating: 1 (100%+)
Default

anyone found the diff case braces in the states for sale yet?
ResultsRC is offline   Reply With Quote
Old 06-25-2015, 12:53 AM   #8482
Tech Regular
 
likea45's Avatar
 
Join Date: Apr 2014
Posts: 439
Trader Rating: 2 (100%+)
Default

Need a good outdoor clay set up. Semi dusty hard packed. Thanks!
__________________
Current Rides: Kyosho ZX6 - Kyosho RB6 - Kyosho RT6 - Kyosho SC6.
likea45 is offline   Reply With Quote
Old 06-25-2015, 01:21 AM   #8483
Tech Elite
 
rcgod's Avatar
 
Join Date: Apr 2002
Location: Sacramento, CA
Posts: 3,045
Trader Rating: 27 (100%+)
Default

Quote:
Originally Posted by likea45 View Post
Need a good outdoor clay set up. Semi dusty hard packed. Thanks!
Saddles or shorty? Bumpy or smooth?
__________________
Dialed RC Hobbies
rcgod is offline   Reply With Quote
Old 06-25-2015, 01:29 AM   #8484
Tech Initiate
 
MiG77's Avatar
 
Join Date: Mar 2015
Posts: 29
Default

Quote:
Originally Posted by rcgod View Post
Saddles or shorty? Bumpy or smooth?
Well, atleast in my XB4 (2013/2014) most problems comes with rear traction (not enought) in outdoor tracks. Shorty setup moves CoG even more forward so I would guess saddle is better for outdoor (and shorty for high traction indoor track).
MiG77 is offline   Reply With Quote
Old 06-25-2015, 01:34 AM   #8485
Tech Elite
 
rcgod's Avatar
 
Join Date: Apr 2002
Location: Sacramento, CA
Posts: 3,045
Trader Rating: 27 (100%+)
Default

Quote:
Originally Posted by MiG77 View Post
Well, atleast in my XB4 (2013/2014) most problems comes with rear traction (not enought) in outdoor tracks. Shorty setup moves CoG even more forward so I would guess saddle is better for outdoor (and shorty for high traction indoor track).
I'm asking what battery setup he's going to run. The setup will be different depending on which one. I agree that saddles would be better but he might only have shorty packs.
__________________
Dialed RC Hobbies
rcgod is offline   Reply With Quote
Old 06-25-2015, 01:50 AM   #8486
Tech Addict
 
HSV427's Avatar
 
Join Date: Mar 2015
Location: Melbourne
Posts: 539
Trader Rating: 22 (96%+)
Default

Is anyone else stripping the rear 14t bevel gear I've been threw 2 in a couple weeks, is this a common problem? Is there a fix or should i try the composite ones. TIA
__________________
Serpent 988, OS speed shimo edition, Serpent 977 35th anniversary. OS speed shimo edition Serpent 977 evo2, Novarossi Mito WC35 2017, Shepherd Velox, O.S Speed r2102, Motonica p81rs2, REDS Racing M7 WCS V3.0, , CM 1/8 INFINITY O.S Speed 2103.
HSV427 is offline   Reply With Quote
Old 06-25-2015, 01:52 AM   #8487
Tech Addict
 
HSV427's Avatar
 
Join Date: Mar 2015
Location: Melbourne
Posts: 539
Trader Rating: 22 (96%+)
Default

Hi can someone tell me How does removing the front and rear top deck effect the xb4.
And is better to remove the front or rear or both. TIA
__________________
Serpent 988, OS speed shimo edition, Serpent 977 35th anniversary. OS speed shimo edition Serpent 977 evo2, Novarossi Mito WC35 2017, Shepherd Velox, O.S Speed r2102, Motonica p81rs2, REDS Racing M7 WCS V3.0, , CM 1/8 INFINITY O.S Speed 2103.
HSV427 is offline   Reply With Quote
Old 06-25-2015, 05:27 AM   #8488
Tech Master
 
BDRMBULLY's Avatar
 
Join Date: May 2006
Location: toronto CANADA
Posts: 1,490
Trader Rating: 39 (100%+)
Default

Quote:
Originally Posted by MiG77 View Post
Well, atleast in my XB4 (2013/2014) most problems comes with rear traction (not enought) in outdoor tracks. Shorty setup moves CoG even more forward so I would guess saddle is better for outdoor (and shorty for high traction indoor track).
I think in most cases you prob have a worn diff case even though its not cracked or broken its prob time to replace it and a small shim to push the lil gear closer to the bigger gear helps alot. I just over hauled my 13 with new cases and bearings due to sloppy bearings in the cases .
All the best.
__________________
SCTE, DESC 410, XRAY XB4, MBX6 ECO
I hate feeling bad about feeling good about that!
Hand D Flooring
BDRMBULLY is offline   Reply With Quote
Old 06-25-2015, 10:44 AM   #8489
Tech Apprentice
 
Join Date: Dec 2013
Posts: 87
Default

Quote:
Originally Posted by HSV427 View Post
Hi can someone tell me How does removing the front and rear top deck effect the xb4.
And is better to remove the front or rear or both. TIA
I have tried basically all combinations and this is what I found, for me. My normal track is indoor medium to medium-high grip. It is SCVRC for anyone who is familiar.

I started with "stock" with both top decks installed and the car is very predictable. The current layout has some sharp 180 degree turns and with both top decks installed, I was having a hard time getting the car to have enough grip and rotate properly so my next step was to allow the car to have more flex.

Next, I ran the car with no rear top deck, but still with the front deck installed. You instantly notice the difference and while the car felt better initially, I found this setup a bit inconsistent. What I mean is that I expected to have more rear grip, but it is ALOT of flex and it gets a little unpredictable, especially in the rear end. Seemed like it was too much flex directed to the rear. I found myself chasing the rear end and wanting more rear grip. I had plenty of steering, but the rear would step out on me without much warning.

I then put the rear top deck back on and ran with both top decks, but removed all of the optional flex screws on the bottom of the chassis. This was good and got its predictability back, but the car never felt like it reached its full potential. I would say that the car was consistent and predictable, but not as fast as it could be.

Then, Xray released the #361168 option which allows you to completely remove the front and rear top deck and that is what I tried next. I used the x brace #361173 in addition to the #361168 and this is when the car came alive. I used all flex screws in the chassis and all flex screws on the #361168 braces and the car has plenty of grip and rotates extremely well. It is better in every way. More forward grip, more side grip, rotates better, and is consistent. If anyone is on the fence about trying this option, it is probably one of the best tuning options available.

At the end of the day, adding/removing the top decks affects flex of the car. At this point, I can't see any need to go back to having the front and rear top deck. The options xray released just make the car better(for me at my track). One thing to note is I also found the floating servo mount to make the car better in terms of evening out the flex. I also run in shorty configuration.

Hope this helps.
Freeski is offline   Reply With Quote
Old 06-25-2015, 11:23 AM   #8490
Tech Fanatic
 
Join Date: Jun 2004
Location: Ottawa, Canada
Posts: 895
Trader Rating: 15 (100%+)
Default

Thanks Freeski for that very well written report, you've described my situation as well, so I will look to try the new lower stiffeners now.

Would you mind posting your set up as well?

My track is a little larger than yours, but similar in a number of ways as well with respect to grip and layout.
__________________
Daragh Slowey
22-4 2.0/R10/Scorpion5.5/S6040/Nosram shorty
B5R/R10/LRP8.5/1258TGBlk/Nosram shorty
EB48SL/RX8/TekinT8i/Hitec7599/SMC4500(4S)
Grasshopper/Tekin FX/Twister 27T/FutabaS9551/Speed power
HeavyD99 is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
EP buggies thread sim600 Malaysian R/C Racers 3586 03-30-2016 11:53 PM



Currently Active Users Viewing This Thread: 1 (0 members and 1 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 10:12 PM.


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