R/C Tech Forums

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

Reply
 
Thread Tools Search this Thread
Old 08-09-2009, 08:07 PM   #1
Tech Fanatic
 
swimbikerun's Avatar
 
Join Date: Feb 2006
Location: Cincinnati, OH
Posts: 886
Trader Rating: 100 (100%+)
Default Steering Angle

Is there a optimum steering angle to set your steering at? At full lock out I'm getting 16 degrees @ 100% Dual Rate. Obviously I can tone it down to make a easier to drive but was wondering what the general consensus was for sedan and 1/12th scale.
__________________
-Xray T4 '16/Xray X12 '16
-2010 Cincinnati Beer Mile Champion
swimbikerun is offline   Reply With Quote
Old 08-09-2009, 09:13 PM   #2
Regional Moderator
 
CarbonJoe's Avatar
 
Join Date: Jul 2006
Posts: 2,661
Default

The amount of steering angle really doesn't mean anything. What matters is that your endpoints are set such that the servo doesn't whine or bind at 100% steering throw in each direction, so that you don't burn up the servo. With that said, you more than likely won't use all of that travel anyway. That's where your dual rate comes into play to reduce the amount of left/right travel equally. For indoor tracks, we generally set the dual rate so that we have a turning circle of about 5.5 to 6 feet diameter.

Any more than that, and the steering will seem "twitchy" and will be harder to drive, since you have to manually control the limits using steering input. If you have your dual rate set correctly, you can just crank the wheel all the way and have the correct turning radius.

For 1/12 scale, we use about a 3 - 4 foot diameter circle. For both scales, these circle diameters are dependent on the size and layout of your track.

You should also check the circle diameter in both directions to make sure that they are the same, or the car could behave erratically. In addition, it is good practice to check this before every run, in case something changed due to a crash, servo issue, tweak, etc.
__________________
*** The Gate - Celebrating 8 years at the same location ***
The difference between genius and stupidity is that genius has its limits. - Albert Einstein
Understeer is when you hit the wall with the front of the car and oversteer is when you hit the wall with the rear of the car
CarbonJoe is offline   Reply With Quote
Old 08-09-2009, 09:24 PM   #3
Tech Adept
 
Join Date: May 2009
Posts: 133
Default

Quote:
Originally Posted by CarbonJoe View Post
For indoor tracks, we generally set the dual rate so that we have a turning circle of about 5.5 to 6 feet diameter.

.
Do you measure the circle on the inside wheel ?
gimpex is offline   Reply With Quote
Old 08-09-2009, 09:39 PM   #4
Regional Moderator
 
CarbonJoe's Avatar
 
Join Date: Jul 2006
Posts: 2,661
Default

Quote:
Originally Posted by gimpex View Post
Do you measure the circle on the inside wheel ?
Place the car against and parallel to the inside or outside wall on a straight. Turn the wheel full lock left (or right), apply throttle so car moves slowly, until car is parallel to wall facing opposite direction, then stop (hence at the limit of the diameter). Step off distance to wall to determine diameter. Adjust dual rate and repeat until diameter is at desired size. Place a foot against the outside side of the car, flip car around 180 degrees, and go full lock in the opposite direction. If car just brushes the wall at opposite lock, both directions are symmetrical, which is what you want. Adjust to taste.

Of course, be careful of other cars on the track when you do this. No need to get t-boned and destroy two cars.
__________________
*** The Gate - Celebrating 8 years at the same location ***
The difference between genius and stupidity is that genius has its limits. - Albert Einstein
Understeer is when you hit the wall with the front of the car and oversteer is when you hit the wall with the rear of the car
CarbonJoe is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
Hpi Pro 4 Barry White Electric On-Road 16060 Yesterday 02:19 AM
Bartolina pambihira Singapore R/C Racers 21953 11-01-2017 04:43 AM
Kyosho Ultima RB5 Thread Drift_Buggy Electric Off-Road 14641 11-10-2015 09:28 AM
DAVAO CITY R/C CLUB bash n thrash Manila Racers 1215 02-10-2015 08:20 AM
1/10th pan car Taz_S Oval, Larger Scales and More 16138 09-25-2014 10:03 AM
Mugen MTX-3 university_dave Nitro On-Road 17237 12-30-2012 01:16 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 06:00 PM.


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