R/C Tech Forums

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

Like Tree38Likes
Reply
 
Thread Tools Search this Thread
Old 06-25-2015, 11:32 AM   #8491
Tech Apprentice
 
Join Date: Dec 2013
Posts: 87
Default

Quote:
Originally Posted by HeavyD99 View Post
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.
http://www.rctech.net/forum/attachme...1&d=1435268540

I made a mistake with the c-hubs. I used stock which is 9 degrees and I accidentally put 6 on the setup sheet.
Attached Files
File Type: pdf xb4 setup-06252015110154.pdf (186.4 KB, 142 views)

Last edited by Freeski; 06-26-2015 at 10:39 AM.
Freeski is offline   Reply With Quote
Old 06-25-2015, 12:54 PM   #8492
Tech Master
R/C Tech Elite Subscriber
 
Join Date: Oct 2014
Location: WI
Posts: 1,392
Trader Rating: 30 (100%+)
Default

I would suggest going with the graphite composite. I have them throughout all 3 diffs as well as crown and drive pinions. They are smooth as silk, very quiet and again I have had no issues thus running 300k in the C DIff. I also tried the slipper once and had her really tight to obtain some serious snap, thus I had no issues. Break them in by running a pack through nice and gentle to start.
Norse is offline   Reply With Quote
Old 06-25-2015, 02:00 PM   #8493
Tech Elite
 
rcgod's Avatar
 
Join Date: Apr 2002
Location: Sacramento, CA
Posts: 3,045
Trader Rating: 27 (100%+)
Default

Quote:
Originally Posted by Freeski View Post
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.
Thanks for the feedback. I just ordered both pieces from rcamerica.
__________________
Dialed RC Hobbies
rcgod is offline   Reply With Quote
Old 06-25-2015, 02:57 PM   #8494
Tech Addict
 
MaricopaAgent's Avatar
 
Join Date: Mar 2014
Location: Maricopa, Az
Posts: 507
Trader Rating: 27 (100%+)
Default

SVCRC also stocks and ships XB4 parts!
MaricopaAgent is offline   Reply With Quote
Old 06-25-2015, 03:30 PM   #8495
Tech Fanatic
 
Join Date: Jun 2004
Location: Ottawa, Canada
Posts: 879
Trader Rating: 15 (100%+)
Default

SCVRC and RCAmerica were both out of stock as of 3pm EST when I called
__________________
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
Old 06-25-2015, 03:51 PM   #8496
Tech Master
 
suby723's Avatar
 
Join Date: May 2011
Location: Spring Hill Tennessee
Posts: 1,377
Trader Rating: 21 (100%+)
Default

Irritated that I can't find the 361168 part anywhere except over seas!
suby723 is offline   Reply With Quote
Old 06-25-2015, 07:15 PM   #8497
Tech Elite
 
rcgod's Avatar
 
Join Date: Apr 2002
Location: Sacramento, CA
Posts: 3,045
Trader Rating: 27 (100%+)
Default

Quote:
Originally Posted by HeavyD99 View Post
SCVRC and RCAmerica were both out of stock as of 3pm EST when I called
Weird. I called rcamerica at 12 pacific and they had both in stock. Maybe I got the last one.
__________________
Dialed RC Hobbies
rcgod is offline   Reply With Quote
Old 06-25-2015, 11:22 PM   #8498
Tech Regular
 
likea45's Avatar
 
Join Date: Apr 2014
Posts: 439
Trader Rating: 2 (100%+)
Default

Quote:
Originally Posted by rcgod View Post
Saddles or shorty? Bumpy or smooth?
Saddles, combo of bumpy and smooth in spots.
__________________
Current Rides: Kyosho ZX6 - Kyosho RB6 - Kyosho RT6 - Kyosho SC6.
likea45 is offline   Reply With Quote
Old 06-26-2015, 01:37 AM   #8499
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
Saddles, combo of bumpy and smooth in spots.
I'm a big fan of the Vik Reedy setup with saddles. I ran it on several different tracks from low bite to high bite and only required minor changes. On low bite 7k/3k diff fluids and either remove shock limiters or unscrew shock ends to get more droop. The stock 3 hole pistons are ok, I prefer the Avids. If you have a 2015 the center diff will work great with 100k to 300k depending on traction. Remove the chassis flex screws for low bite.
__________________
Dialed RC Hobbies
rcgod is offline   Reply With Quote
Old 06-26-2015, 05:10 AM   #8500
Tech Addict
 
HSV427's Avatar
 
Join Date: Mar 2015
Location: Melbourne
Posts: 515
Trader Rating: 21 (96%+)
Default

Quote:
Originally Posted by BDRMBULLY View Post
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.
Thanks heaps ill try shimming the gear closer to the main gear, but i don't think its the diff housing as the buggy is only 3 months old but if it happens again ill definitely be changing the diff housing.
__________________
XRAY XB4 15, XRAY XB4 16, XRAY XB2, YOKOMO B-MAX4 III FACTORY KIT, YOKOMO YZ4, YOKOMO YZ2,KYOSHO RB6, TAMIYA TRF503, TAMIYA TRF201XMW, TAMIYA TRF 211XM
HSV427 is offline   Reply With Quote
Old 06-26-2015, 05:12 AM   #8501
Tech Addict
 
HSV427's Avatar
 
Join Date: Mar 2015
Location: Melbourne
Posts: 515
Trader Rating: 21 (96%+)
Default

Quote:
Originally Posted by Freeski View Post
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.
Thanks heaps thats an awesome response, i just ordered all the parts you suggested can't wait to give it a try especially considering it makes an already awesome buggy even better and again thanks for the response.
__________________
XRAY XB4 15, XRAY XB4 16, XRAY XB2, YOKOMO B-MAX4 III FACTORY KIT, YOKOMO YZ4, YOKOMO YZ2,KYOSHO RB6, TAMIYA TRF503, TAMIYA TRF201XMW, TAMIYA TRF 211XM
HSV427 is offline   Reply With Quote
Old 06-26-2015, 09:43 AM   #8502
Tech Regular
 
Join Date: Mar 2014
Posts: 254
Trader Rating: 1 (100%+)
Default

Quote:
Originally Posted by suby723 View Post
Irritated that I can't find the 361168 part anywhere except over seas!
I cant find some of the parts I want anywhere in the states either,is irratating for sure. has anyone found these chassis parts in stock local,how much are they?
ResultsRC is offline   Reply With Quote
Old 06-26-2015, 10:52 AM   #8503
Tech Fanatic
 
Join Date: Jun 2004
Location: Ottawa, Canada
Posts: 879
Trader Rating: 15 (100%+)
Default

Sure local and on your buggy this weekend is nice, but I got all of these items I wanted at Xray Austria. All in stock. 10 days to my door. Boom, done.
__________________
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
Old 06-26-2015, 11:13 AM   #8504
Tech Master
R/C Tech Elite Subscriber
 
Join Date: Oct 2014
Location: WI
Posts: 1,392
Trader Rating: 30 (100%+)
Default

Quote:
Originally Posted by HeavyD99 View Post
Sure local and on your buggy this weekend is nice, but I got all of these items I wanted at Xray Austria. All in stock. 10 days to my door. Boom, done.
As heavy said: X-ray shop Austria the owner Mr Binder is great. They have everything and the prices are nice, shipping is reasonable and TA is fast.

Sign in and you will we see the prices without the 20 percent VAT. Again a great place with everything XRAY.

Best.
Norse is offline   Reply With Quote
Old 06-26-2015, 07:02 PM   #8505
Tech Master
 
suby723's Avatar
 
Join Date: May 2011
Location: Spring Hill Tennessee
Posts: 1,377
Trader Rating: 21 (100%+)
Default

Yeah I'm not going to spend that kinda money on shipping though..
suby723 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: 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 06:20 PM.


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