R/C Tech Forums

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

Thread Tools Search this Thread
Old 03-16-2010, 03:23 PM   #16
Tech Master
heretic's Avatar
Join Date: Aug 2006
Location: europe
Posts: 1,055

Originally Posted by oldrcr View Post
I believe it is true that on some radios + expo is the opposite as it is on others. Can anyone verify this? or do all manufacturers use the same +/- meaning?

With the Spektrum DX3R, + expo usually means less servo movement for more movement of the wheel or throttle. This effect progressively increases the movement of the servo/wheel or throttle, at a curve on a graph, that is determined by the % number, until full throw is achieved at the end of travel.

If some radios use - expo to mean the same thing, it would make things rather confusing, like Reinhard's use of -70.

to me, neg expo has always meant : less twitchy around neutral. Like a true exponential curve on a graphic; the x axis, being your driving wheel movement and the y axis being the servo movement.

"positive expo" is something I would rather refer to as logarithmic to avoid confusion.

Don't know about the DX3 though...

The only case in which I have heard of someone using a log steering curve is some 1/5th onroad drivers but I never got the occasion of witnessing this myself or talking to a very good 1/5 driver( that seems rare tbh )
I love wedge bodies. I love dish wheels.
heretic is offline   Reply With Quote
Old 03-16-2010, 03:55 PM   #17
Tech Champion
Join Date: Oct 2005
Location: Cincinnati, OH
Posts: 5,360
Trader Rating: 38 (100%+)

Spektrum radio is backwards for expo.
or8ital is offline   Reply With Quote

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 11:54 PM.

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

SEO by vBSEO 3.5.0