R/C Tech Forums

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

Reply
 
Thread Tools Search this Thread
Old 06-02-2003, 08:21 AM   #1
Tech Initiate
 
iron chef's Avatar
 
Join Date: Mar 2003
Location: a hundred miles away son
Posts: 36
Default front one ways/spool/diff

With all of the options out there, whats the difference really? To complicate matters, some cars let you run any front diff option plus one way or direct drive center shaft as well. Is any combination better suited for stock or mod? Shaft or belt? Asphalt or carpet?
iron chef is offline   Reply With Quote
Old 06-02-2003, 03:24 PM   #2
Tech Elite
 
Cole Trickle's Avatar
 
Join Date: Sep 2001
Location: Denmark / Europe
Posts: 2,571
Default

It's about driving style and grip.

With a one-way, the car got a lot of grip in the front, when off throttle. But you can only brake with the rear wheels. So with a one-way, you can go faster and tigther through corners. The difference between a center one-way and a one-way diff, is that with the one-way diff, you can apply throttle earlier, when going out of corners. Also called more on power steering.

It seems to me that either people hate them or love them. It's not unsual to gain a lap or two, while the proper driving style is learned. One-ways are best suited for high grip tracks.

Here are some more details: http://www.rccaraction.com/articles/oneways.asp
__________________
Schumacher Mi5 - Sanwa MT-4 / RX-462 / KO Propo PDS-2123 - Nosram 5600 X-treme Saddle Pack - LRP SPX Zero/X12 17,5 - Nosram Stealth Touch Evolution - MAAS SPS 9250
Cole Trickle is offline   Reply With Quote
Old 09-13-2010, 11:14 PM   #3
Tech Fanatic
 
alcyon's Avatar
 
Join Date: Feb 2006
Location: kuala lumpur,malaysia
Posts: 954
Trader Rating: 8 (100%+)
Default

you know, with so many set up books out there, none of them mention what kind of seting should we use for one way spool or ball diff.
i mean if i were using a spool the suspension should be set up
front soft, rear hard?
if front one way, back soft front hard?
if ball diff front and rear same?
anyone knows the general idea?
alcyon is offline   Reply With Quote
Old 09-14-2010, 09:42 AM   #4
Tech Regular
 
Micro-E's Avatar
 
Join Date: Jun 2004
Location: Orange, CA
Posts: 329
Trader Rating: 3 (100%+)
Default

Quote:
Originally Posted by alcyon View Post
you know, with so many set up books out there, none of them mention what kind of seting should we use for one way spool or ball diff.
i mean if i were using a spool the suspension should be set up
front soft, rear hard?
if front one way, back soft front hard?
if ball diff front and rear same?
anyone knows the general idea?
I look forward to reading what other more experienced racers have to say about this.

My experience -

Setupwise, I could not get a spool to 'feel' good enough over a diff in my first attempt at using. Then I found a tip about 'reverse tuning' from a guy John Stranahan(?) - seems to really know his stuff. With a spool, i had horrific push and I tried to go softer in the front to get more grip. Turned out going stiffer actually was the ticket. So I went up two spring rates up front, no change to the rear from my diff setup. That was one car.....a Losi XXX. (I run a one way right now in that car)

My second car (Cyclone S), I just swapped the spool in and made no setup changes - worked great.

I guess not only do you have to adjust for driving style, but each car will react differently as well.
__________________
- Erik
Micro-E is offline   Reply With Quote
Old 09-14-2010, 11:42 AM   #5
Tech Elite
 
Foxxrocket's Avatar
 
Join Date: Jul 2008
Location: Sonoma County
Posts: 2,018
Default

I run only spools, and they have a lot of pull. You want to straighten out the car before punching the trigger.
__________________
Tamiya 416X/ Tamiya TA-05 IFS/ Losi XXX-SCT/ HPI Baja 5SC/ Tamiya M05/ Tamiya F103/ Tamiya F104/ Team Associated 10R5O/ Kyosho IGT2/
Foxxrocket is offline   Reply With Quote
Old 09-14-2010, 12:31 PM   #6
Tech Master
 
Join Date: Apr 2008
Location: Christchurch, NZ
Posts: 1,063
Default

It depends a lot on the track you are running on as much as car set-up. When I first started I was diff front, then one-way, now spool. We run on a large outdoor track with some fast corners, but also a few tight hair-pins. With a one-way it's very difficult to brake, so the hair-pins were an issue. The diff was fine as it rolls through the corners better than a spool, but with the spool, you can really drag the car out of a corner without diffing-out.
That's the biggest difference for me. A spool creates under-steer, but when you accomodate for that with set-up, you can throw the car around a lot harder, and you don't have to worry about the diff tightness changing.
Like the original post says, there isn't a lot of set-up info on adjustments to make with edifferent front diffs, but that's why you talk to the fast guys at your track, that's what I do
__________________
Agama A8 Evo | GRP .21 | Spektrum | Savox

My car just hit 88mph. I hope it comes back soon....
JR007 is offline   Reply With Quote
Old 09-14-2010, 01:02 PM   #7
Tech Elite
 
Foxxrocket's Avatar
 
Join Date: Jul 2008
Location: Sonoma County
Posts: 2,018
Default

If you run a front one-way, you want a lot of drag brake set into your ESC. That should help the car slow down into a tight turn.
__________________
Tamiya 416X/ Tamiya TA-05 IFS/ Losi XXX-SCT/ HPI Baja 5SC/ Tamiya M05/ Tamiya F103/ Tamiya F104/ Team Associated 10R5O/ Kyosho IGT2/
Foxxrocket is offline   Reply With Quote
Old 09-14-2010, 11:05 PM   #8
Tech Fanatic
 
alcyon's Avatar
 
Join Date: Feb 2006
Location: kuala lumpur,malaysia
Posts: 954
Trader Rating: 8 (100%+)
Default

Quote:
Originally Posted by Micro-E View Post
I look forward to reading what other more experienced racers have to say about this.

My experience -

Setupwise, I could not get a spool to 'feel' good enough over a diff in my first attempt at using. Then I found a tip about 'reverse tuning' from a guy John Stranahan(?) - seems to really know his stuff. With a spool, i had horrific push and I tried to go softer in the front to get more grip. Turned out going stiffer actually was the ticket. So I went up two spring rates up front, no change to the rear from my diff setup. That was one car.....a Losi XXX. (I run a one way right now in that car)

My second car (Cyclone S), I just swapped the spool in and made no setup changes - worked great.

I guess not only do you have to adjust for driving style, but each car will react differently as well.
so far this is the only answer i got regarding suspension stiffness for the front and the rear when using, ball diff, one way or spool. Anyone else?
alcyon is offline   Reply With Quote
Old 09-14-2010, 11:36 PM   #9
Tech Champion
 
Join Date: Feb 2003
Location: Sydney, Australia
Posts: 5,310
Trader Rating: 1 (100%+)
Default

Quote:
Originally Posted by alcyon View Post
so far this is the only answer i got regarding suspension stiffness for the front and the rear when using, ball diff, one way or spool. Anyone else?
As the post also says it will depend on your chassis, and where it is strong or weak, and how that works with your particular track conditions. Basically you need to go out and try it yourself and see if it works FOR YOU.
__________________
Blade: Andro Treiber H 79g AN
FH: Donic Bluefire M3 Max Blk
BH: Donic Bluefire M2 Max Red
Powered by Falco
Dragonfire is offline   Reply With Quote
Old 09-15-2010, 03:37 AM   #10
Tech Master
 
Join Date: Apr 2008
Location: Christchurch, NZ
Posts: 1,063
Default

There are far too many variables to be able to isolate any individual or group of settings that will chage the handling of a car with diff vs spool vs one-way.
If you look at things like track variables, you have surface type, size of track, technical or open, grip levels, track temp, air temp, humidity, all palying a part in handling.
Car variables include, settings of tire type, camber, caster, roll centre, ride height, spring stiffness, shock oil weight, wheel base, toe, all of which are inter-linked and change handling.
The long and short of it is, aside from giving general characteristics of the effects of each diff type, it is near impossible to say what would need to be adjusted in a hypothetical situation.
__________________
Agama A8 Evo | GRP .21 | Spektrum | Savox

My car just hit 88mph. I hope it comes back soon....
JR007 is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
RC18R Front Spool or Diff? dorkmissle Micro and Mini Scales 5 05-11-2008 09:31 PM
WTB RDX spool or front diff penmark67 Australia Wanted to Buy 0 01-27-2008 04:12 AM
one way vs diff vs spool for the front? pekpekmaster Rookie Zone 22 10-01-2007 05:00 AM
Tamiya TRF415 - roller with spool, one-ways, and front dif afr0sch R/C Items: For Sale/Trade 2 07-13-2007 07:59 PM
415 Steel spool & front ball diff + C_O_jones R/C Items: For Sale/Trade 2 01-03-2006 09:21 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 07:02 AM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
Powered By: vBulletin v3.9.2.1
Privacy Policy | Terms of Use | Advertise Content © 2001-2011 RCTech.net