R/C Tech Forums

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

Reply
 
Thread Tools Search this Thread
Old 11-19-2013, 01:08 PM   #1
Tech Rookie
 
Join Date: Apr 2013
Location: Kitchener, Ontario
Posts: 6
Default spool or diff, what difference will I notice in the front?

I have a Spec-R S1 that came with a spool up front. What would I notice if I replaced the spool with a diff? Do you drive the cars differently with one versus the other? As a newbie to this, would I notice much difference one way or the other?

Thanks. I have had very little exposure to TC so I am trying to learn.
HappyOne is offline   Reply With Quote
Old 11-19-2013, 01:53 PM   #2
Tech Regular
 
Join Date: Apr 2012
Location: Fort Collins, CO
Posts: 318
Trader Rating: 16 (100%+)
Default

The spool will give you more acceleration out of the corners but less turn in and in general a car that will have tendency to understeer. A gear diff in front will give more turn in but less acceleration out of the corners. A happy medium is to run a gear diff with 2.5 million cst fluid in it to give slightly more turn in than a spool but still get acceleration out of the corners. Some people claim to be faster with one or the other but it is all down to personal preference. Best way is to try a gear diff in front and see how the car handles.
__________________
www.5280Raceway.com | Racing. Elevated.
samsking is offline   Reply With Quote
Old 11-19-2013, 01:53 PM   #3
Tech Master
 
big al's Avatar
 
Join Date: Jan 2002
Location: Olympia,Wa
Posts: 1,026
Trader Rating: 10 (100%+)
Default

The spool with be more aggressive out of the turns on throttle. You won't necessarily be slower with a diff up front, the car will drive differently in and out of the turns. I keep the spool on my S1 (21.5 car) and a tight dff on my tc6 (17.5 car). I go back and forth with tc6. Depends on my mood that particular day. Hope this helps!
big al is offline   Reply With Quote
Old 11-19-2013, 02:29 PM   #4
Tech Regular
 
SS LS1's Avatar
 
Join Date: Feb 2004
Location: Michigan
Posts: 360
Trader Rating: 23 (100%+)
Default

One thing to consider............. Your spool will likely weigh considerably less than a gear diff. This is rotating mass that directly affects the acceleration of your car.
__________________
Tamiya 417v7 Sedan, ___ Tamiya 417v7 USGT, ___ CEFEX EVO w/ 417 suspension VTA
Exotex TA06 Pro CS Drifting, ___ Tamiya 417v5 (sold)
AE SC10 4x4
AE SC10 AE B4.11
SS LS1 is offline   Reply With Quote
Old 11-19-2013, 07:10 PM   #5
Tech Champion
 
ThePanda's Avatar
 
Join Date: Jul 2013
Location: Michigan
Posts: 7,046
Trader Rating: 65 (100%+)
Default

Have you considered a one way? You get the initial turn in like a diff, but you can power out like a spool. You just have to be smother and lighter on the breakers.
ThePanda is offline   Reply With Quote
Old 11-19-2013, 08:14 PM   #6
Tech Fanatic
 
Join Date: May 2010
Location: columbus oh
Posts: 886
Default

for me the gear diff smooth the car out made it ez to drive...but i like the pull that the spool gives out the corner

but right now im running a gear diff in both of my cars..17.5 & usgt 2.5mill in the front & 2k in the rear...imma try 1k in the rear & see how that feels
starrx is offline   Reply With Quote
Old 11-19-2013, 08:28 PM   #7
Suspended
 
Join Date: Jun 2011
Location: Brisbane
Posts: 1,696
Trader Rating: 6 (100%+)
Default

If you are a new driver, a diff up front will make the car easier to drive, as the car will rotate though the corner better and not wash off speed because of the outer wheel biting in due to lack of power on in the corner. A spool needs more power on in corner to be effective, something most new drivers cannot do.
RogerDaShrubber is offline   Reply With Quote
Old 11-20-2013, 02:13 PM   #8
Tech Rookie
 
Join Date: Apr 2013
Location: Kitchener, Ontario
Posts: 6
Default

Thanks for the replies. It does help.
HappyOne 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 05:10 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