R/C Tech Forums

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

Reply
 
Thread Tools Search this Thread
Old 09-03-2003, 02:38 PM   #1
Tech Apprentice
 
Join Date: Aug 2003
Location: Bloomfeild Hills, MI
Posts: 76
Default General diff question

Why, in off road racing, should diffs be set so tight? Wouldn't that make them harder to drive in the corners
igkyoa is offline   Reply With Quote
Old 09-03-2003, 03:19 PM   #2
Tech Adept
 
glypo's Avatar
 
Join Date: Jun 2003
Location: Surrey, England
Posts: 116
Default

If it was loose the car wouldn't go anywhere.

Diffs distribute power to the easiest thing to turn. For example if you put one wheel on the ground and the other in the air the one on the ground wont move at all, but the one in the air will spin happily. With on-road all wheels are always on the ground.

So if you think about it offroad tracks are bumpy. So if one wheel bumps off the ground (or for whatever reason dosn't have full contact with the ground, which obviously happens a lot in off-road) all the power will be transfered to that wheel but not to the one on the ground and the car just wouldn't go anywhere fast. Also with loose surfaces the same thing applies so when there is less grip on one wheel it will spin more then the one with more grip. (which is pointless because it gives most power to the wheel with least grip)

This obviously creates a very in-effcient diff and will not only slow the car down but because of the extremley heavy usage melt it.

Thats why the diffs are tight to stop this un-necesary diff action. Whereas tarmac are flat and solid so on-roads have problems with bumps and loose surfaces.

Hope this makes sense
glypo is offline   Reply With Quote
Old 09-23-2003, 01:34 PM   #3
Tech Initiate
 
Join Date: Sep 2003
Posts: 29
Default

figure, if your going up a steep hill with loose dirt... what usually happens? The one wheel stops and the other spins and digs into the ground getting you stuck... thats probably why you dont want it too loose. Sure the handling is reduced around corners etc., but on off-road with dirt and grass and whatever i dont think you'll notice it much.
prestonrice is offline   Reply With Quote
Old 09-27-2003, 01:06 PM   #4
Tech Apprentice
 
Join Date: Aug 2003
Location: Bloomfeild Hills, MI
Posts: 76
Default

thanks I have been running my diff a little loose to help in the turns but i think i may hav been losing power.
igkyoa is offline   Reply With Quote
Old 09-27-2003, 04:34 PM   #5
Tech Addict
 
losi jon's Avatar
 
Join Date: Mar 2003
Location: california
Posts: 648
Default

how tight or loose your diff is, is actually another tuning option. to a point! you don't want it too tight or too loose.
losi jon is offline   Reply With Quote
Old 10-12-2003, 09:16 AM   #6
Tech Addict
 
Join Date: Aug 2003
Location: north carolina
Posts: 536
Send a message via AIM to 2mcgrath Send a message via Yahoo to 2mcgrath
Default

you need them tight for better traction in loose soil or sandy conditions..also works great in hard packed too
2mcgrath is offline   Reply With Quote
Old 10-13-2003, 03:42 PM   #7
Tech Apprentice
 
Join Date: Aug 2003
Location: Bloomfeild Hills, MI
Posts: 76
Default

thanks for all the input i have been turning faster lap times since i re tuned my diff
igkyoa is offline   Reply With Quote
Old 10-13-2003, 03:47 PM   #8
Tech Fanatic
 
lmunno's Avatar
R/C Tech Charter Subscriber
 
Join Date: Aug 2003
Location: Florida
Posts: 892
Send a message via AIM to lmunno
Default


0

Last edited by lmunno; 10-13-2003 at 03:56 PM.
lmunno is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
general gearing question trdsupra88 Electric On-Road 3 10-01-2007 12:12 PM
General question/experience J.Gonzalez R/C Items: For Sale/Trade 22 12-31-2006 08:05 AM
General question Secret_weapon Electric On-Road 1 10-08-2005 06:44 AM
General Electric question bvoltz Rookie Zone 10 09-07-2005 11:12 AM
just a general rookie question BoneHead Rookie Zone 9 12-13-2004 11:08 AM



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 02:15 PM.


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