R/C Tech Forums

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

Reply
 
Thread Tools Search this Thread
Old 10-16-2012, 09:04 AM   #1
Tech Addict
 
pointforward's Avatar
 
Join Date: Jun 2010
Posts: 548
Send a message via Yahoo to pointforward Send a message via Skype™ to pointforward
Default Full-scale camber vs. camber as practiced in 1/8

I've noticed that in full-sized racing cars such as F1, Touring, and Rally, the front wheels have significantly more negative camber than the real ones, whereas in 1:8 off-road, all set-up sheets I've seen have more negative in the rear.

What is the principle behind this?
__________________
Kyosho MP9 - Novarossi Bonito // Serpent Cobra 811-T - CRE Novarossi Roma // Serpent 811Be - Hobbywing/Tekin /// Sanwa M12 /// Advantage Racing Bearings
=============================================
Live life from start to finish
pointforward is offline   Reply With Quote
Old 10-16-2012, 09:32 AM   #2
Tech Elite
 
Zerodefect's Avatar
 
Join Date: Apr 2008
Location: Underground, Ohio
Posts: 4,305
Default

Caster settings in RC are different. In real cars the faster you go, the lighter the steering can get, in RC it's often the opposite, servos work hard at high speeds. Caster affects your camber settings when you turn the wheel.

They have less caster, so they have less increase in camber when turning. So they need more camber to make up the difference.

Rear camber is mostly based on chassis roll in turns. You want to keep the tires flat on the ground. RC's often have more roll than real race cars, like WRC. Sometimes I increase rear camber to loosen the rear end and prevent traction rolls.

Also some race cars, like 1/10th 2wd roll onto the outside sidewalls in fast turns and pick up grip like that. It's complete nonsense, but it works.

F1, despite the fact that they are on road, have very familiar settings. -4/-3 and 2 toe out is common. And stiff bar, soft spring, setups like us.
Zerodefect is offline   Reply With Quote
Old 10-16-2012, 11:39 AM   #3
Tech Champion
 
Roelof's Avatar
 
Join Date: Aug 2007
Location: Holland
Posts: 6,213
Send a message via ICQ to Roelof
Default

Running the front tires on just an edge instead of the complete surface is giving less resistance when running in a straight line. Beside that, racing cars go a lot faster through the corners, a piece of roll with the re-shape of the tire through those forces the tire gives the right grip in the corners.
__________________
The quality of an answer comes with the quality of the question.
Roelof is online now   Reply With Quote
Old 10-16-2012, 07:59 PM   #4
Suspended
 
Join Date: May 2012
Posts: 484
Trader Rating: 4 (100%+)
Default

Not to mention none of the full size cars have nearly the suspension travel. What works for toy cars and real cars are different things. Nothing scales up or down. If it works for an 1/8 scale buggy and not on a rally car, who cares?
__________________
Sh Sh Shaw
R.Shackleford is offline   Reply With Quote
Reply



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 07:13 AM.


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