R/C Tech Forums

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

Reply
 
Thread Tools Search this Thread
Old 12-17-2012, 08:28 AM   #1921
Tech Adept
 
Join Date: May 2009
Location: Germany
Posts: 165
Default

Quote:
Originally Posted by Skiddins View Post
I need some help to try and improve my corner entry steering;

Ignore the missed apex's

I seemed to have to scrub more corner speed than some of the others.
In ultimate lap times I was around 0.5s off the very fastest laps (Ollie Jeffries, Elliot Harper etc) and the only thing I could see watching their cars was that they had plenty of steering despit not slowing quite so much for the corners.


http://www.piez0r.com/Skiddins/Xray%...n-16-12-12.pdf

+ YouTube Video
ERROR: If you can see this, then YouTube is down or you don't have Flash installed.
What about antidive for more initial steering?
And I generally prefer progressive springs on the rear as I found that they give more steering in high traction conditions.
niemand is offline   Reply With Quote
Old 12-17-2012, 08:30 AM   #1922
Tech Regular
 
Adam B's Avatar
 
Join Date: Nov 2010
Location: Detroit, Mi
Posts: 411
Default

What Chaz said. Also what pitch gear do you run? What motor? I was at an event this weekend, not one spur gear stripped out on a T4 that I know of. My only gear complaint is the pinion gear has to be installed backwards unless you use Xray pinions, and even that is not a big deal. I have never been happier with any car I have raced. This is my second year racing touring car, and usually take large amounts of time off to deal with priorities and real issues. As soon as I set this car on the track, all my friends complimented me on how I have improved as a driver. There is something off in your build, or something is bent. Stop beating a dead horse about how a small fraction of people are having a spur gear issue. If you are not happy with the car, sell it and try something else. Then complain about the TC6.1 knuckles being trash, or how serpent don't have the best plastic, or how if you tap a board with a tamiya they just explode. You have probably the best car on the market with a proven track record. Something is just off somewhere. Shawn K (Breezy 1) said he would be willing to help you out, take him up on that. You will never meet a nicer and more helpful person.
Adam B is offline   Reply With Quote
Old 12-17-2012, 09:14 AM   #1923
Tech Elite
 
jlfx car audio's Avatar
 
Join Date: Nov 2007
Location: jackson,tn
Posts: 3,125
Trader Rating: 35 (100%+)
Default

Same experiene for me also
__________________
Justin & Matt Lyons
Awesomatix USA, EA motorsports, Sanwa, Protoform, Avid, Gravity Rc , TSR!
a800s sanwa m12s
jlfx car audio is offline   Reply With Quote
Old 12-17-2012, 09:38 AM   #1924
Tech Elite
 
Skiddins's Avatar
 
Join Date: Feb 2006
Location: Windsor, UK
Posts: 4,518
Default

Quote:
Originally Posted by niemand View Post
What about antidive for more initial steering?
And I generally prefer progressive springs on the rear as I found that they give more steering in high traction conditions.
Haven't tried anti-dive.

When I run the progressive's at the back (certainly with the 2.3-2.6) the car end's up too planted, or struggles with faster chicanes.

Skiddins
__________________
Xray T4'16, T4'14 (Wet Car)
Xray X12 2016
Xray X1'16
wlrc.co.uk (West London Racing Centre)
RD Disco
Skiddins is offline   Reply With Quote
Old 12-17-2012, 10:38 AM   #1925
Tech Fanatic
 
erchn's Avatar
 
Join Date: Aug 2010
Location: Union City, CA
Posts: 776
Trader Rating: 7 (100%+)
Default

Quote:
Originally Posted by Skiddins View Post
I need some help to try and improve my corner entry steering;

Ignore the missed apex's

I seemed to have to scrub more corner speed than some of the others.
In ultimate lap times I was around 0.5s off the very fastest laps (Ollie Jeffries, Elliot Harper etc) and the only thing I could see watching their cars was that they had plenty of steering despit not slowing quite so much for the corners.

Hard to say for sure, but I would try one of:
- adding .5mm ackerman shim
- 400wt oil

Both of those should allow the car to react a little faster off center. I think they are a safe change as the car seems to rotate fine once you are in the corner. If you pick up a mid-corner push, try moving to 2 degrees front camber also, or adding a .5mm or 1mm front outer camber link shim for a little more camber gain.

You might also try 50mm front bones.

Last thought is that the car seems a little stiff in the rear, maybe with some of the above changes you can go back to progressives in the rear to get more overall traction.

Good luck.
erchn is offline   Reply With Quote
Old 12-17-2012, 12:06 PM   #1926
Tech Regular
 
Adam B's Avatar
 
Join Date: Nov 2010
Location: Detroit, Mi
Posts: 411
Default

@ Skiddins, have you tried pin sweep? What oil in rear diff? What are you running in the front? Have you tried to widen the rear end out a little. Adding droop?
Adam B is offline   Reply With Quote
Old 12-17-2012, 02:25 PM   #1927
Tech Regular
 
Join Date: May 2007
Location: Netherlands
Posts: 322
Default

Quote:
Originally Posted by Skiddins View Post
Haven't tried anti-dive.

When I run the progressive's at the back (certainly with the 2.3-2.6) the car end's up too planted, or struggles with faster chicanes.

Skiddins
Hi, Skiddins.
You should play with the droop, because I guess, the chassis is 2.2mm you must go to 4.5mm rear droop to 5mm in front, or play with more droop, this prevent the
the car from blocking in the corners and decrease corner speed.
The setting further is OK.
Thanks

Ed
eded1 is offline   Reply With Quote
Old 12-17-2012, 03:12 PM   #1928
Tech Master
 
mac853's Avatar
 
Join Date: Feb 2007
Location: Dirty place
Posts: 1,725
Default

Quote:
Originally Posted by gwhiz View Post
This:
http://www.rc-mushroom.com/product_i...e-tool-p-24906

Pretty good wrench, actually.
Thanks!
mac853 is offline   Reply With Quote
Old 12-19-2012, 12:08 AM   #1929
Tech Master
 
pcar951's Avatar
 
Join Date: Dec 2005
Location: Cow Town
Posts: 1,647
Trader Rating: 19 (100%+)
Default

Quote:
Originally Posted by pcar951 View Post
I hope to have the car built for Tuesday practice. I'll be running boosted 7.5 on indoor carpet, decent grip... good load on the chassis, should be a good spur gear test. I can run back to back with my mod T3/12.
Ran the T4 for the first time tonight, no spur gear problems at all (about 300 laps). Although I didn't tag too many corners with the car, I found it very docile and easy to drive. Pinion gear changes are a real PITA but, overall it's a very nice car. Lap times we're about the same as the 12, a little more consistent though.
__________________
Jim Chapman
PM Hobbycraft | RCAmerica | Xray | Hudy | Reds Racing
pcar951 is offline   Reply With Quote
Old 12-19-2012, 02:35 AM   #1930
Tech Elite
 
Skiddins's Avatar
 
Join Date: Feb 2006
Location: Windsor, UK
Posts: 4,518
Default

Looks like Xray have listened again

__________________
Xray T4'16, T4'14 (Wet Car)
Xray X12 2016
Xray X1'16
wlrc.co.uk (West London Racing Centre)
RD Disco
Skiddins is offline   Reply With Quote
Old 12-19-2012, 02:52 AM   #1931
Tech Adept
 
Join Date: Aug 2009
Posts: 226
Default

Quote:
Originally Posted by Skiddins View Post
Looks like Xray have listened again

More like after the dust has settled! They should've recognised the fault upon design.
maxg123456 is offline   Reply With Quote
Old 12-19-2012, 03:51 AM   #1932
Tech Adept
 
Rockin Rich's Avatar
 
Join Date: Feb 2010
Location: CT
Posts: 123
Trader Rating: 1 (100%+)
Default

Quote:
Originally Posted by Skiddins View Post
Looks like Xray have listened again

1 week too late for me, spent 3 hours last night replacing chassis! Now how quick can I get 1 of these?
__________________
RC MADNESS
TEAM SCREAM
Rockin Rich is offline   Reply With Quote
Old 12-19-2012, 04:23 AM   #1933
Tech Addict
 
alloyslash's Avatar
R/C Tech Elite Subscriber
 
Join Date: Apr 2012
Location: Huntsville, Alabama
Posts: 538
Trader Rating: 19 (100%+)
Default

I will be taking delivery of a new T4 by the end of next week. My plan is to run it as my USVTA car I need some opinions. Will the supplied shock oils/springs/swaybars be soft enough to be effective at the slower speeds of a USVTA ( 25.5 ) car, or do I need to plan on softening it up a bit? I ran my T3'12 in that class once with a 2.6/2.4 - 400cst - 1.3/1.2 combo and it worked great for my style and track.

Any word on when the bumper brace will be available?
__________________
Pemberton SJ27 / Tekin RS / Cooper D4SS 17.5 / EAM 5000 / Futaba 9551 / 17.5lm
Pemberton SJ27 / Tekin RS / Bullet 13.5 / EAM 5000 / Savox 1251 / 13.5 Pro EDM

TLR22 / Tekin RS / D4SS 6.5 / Futaba 9551 / ORCA 6000 /SCMOD,
F14 carpet Oval Chassis too!
alloyslash is offline   Reply With Quote
Old 12-19-2012, 05:15 AM   #1934
Tech Addict
 
Join Date: Jan 2007
Location: Grand Haven, MI
Posts: 675
Trader Rating: 13 (100%+)
Default

Quote:
Originally Posted by Skiddins View Post
Looks like Xray have listened again


Or they copied again! Thanks Damon @ Diggity Designs!
http://www.diggitydesigns.com/products_Xray_T4.html

Last edited by Sean B.; 12-19-2012 at 06:04 AM.
Sean B. is offline   Reply With Quote
Old 12-19-2012, 06:17 AM   #1935
Tech Regular
 
Adam B's Avatar
 
Join Date: Nov 2010
Location: Detroit, Mi
Posts: 411
Default

@ ALLOYSLASH - find a set up online for 17.5 and run that. You are going to have a huge problem with weight though. The car is very light by nature and will have to fill the chassis with lead. I have switched multiple cars from a 17.5 class to VTA, not change any settings, and do very well. Dave Johnson won with one of my cars at the Southern VTA NATs in TN, then took it to Snowbirds and won also.
Adam B is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
Xray T3 2012 rasta_man Electric On-Road 4220 11-09-2016 02:45 PM
RC10B4/T4 Forum DerekL Electric Off-Road 14331 01-01-2016 03:18 PM
****HUGE AE T4 TRUCK TIRE SALE *** CRCDUDE R/C Items: For Sale/Trade 32 08-23-2010 09:55 AM


Tags
xray t4


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 10:49 AM.


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

SEO by vBSEO 3.5.0