R/C Tech Forums

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

Reply
 
Thread Tools Search this Thread
Old 05-17-2009, 05:53 AM   #1
Tech Elite
 
kufman's Avatar
 
Join Date: Feb 2004
Location: Elburn, IL
Posts: 3,429
Trader Rating: 6 (100%+)
Default SmartDiff in Electric

Just starting a thread for anyone who is running the Losi SmartDiff in an Electric 1/8th.

I just got mine on Friday and have started messing around with it. One problem I did have was the outdrives are much shorted than the stock RC8 ones, but I can solve this by using AE outdrives. For the meatime I have relocated my center diff back to the stock location and the CVD's are long enough to reach. My initial impression is that this device doesn't do much more than 10,000 wt oil in a regular center diff. My front tires still seem to unload like crazy. I am using the softest springs and only two of them.

Anyone else tried this thing?
kufman is offline   Reply With Quote
Old 05-17-2009, 06:16 AM   #2
Tech Elite
 
badassrevo's Avatar
 
Join Date: May 2007
Location: Roaming Shores, Ohio
Posts: 3,322
Trader Rating: 12 (100%+)
Default

Most of the guys in my area are running it in the front, not the center.
__________________
Doug Lightcap

ARCS Hobbies / Paint Monster Airbrushing / BFast / Tonys Screws
badassrevo is offline   Reply With Quote
Old 05-17-2009, 06:54 AM   #3
Tech Elite
 
UK.hardcore's Avatar
 
Join Date: Aug 2007
Location: Belgium.
Posts: 2,138
Default

The UK Nitro guys say these diff are good for 30 minutes and then a revision is already needed.
__________________
A racecar is only as good as the mechanic who build it.
UK.hardcore is offline   Reply With Quote
Old 05-17-2009, 07:04 AM   #4
Tech Master
 
rearviewmirror's Avatar
 
Join Date: Nov 2008
Location: Melbourne / Austin
Posts: 1,844
Trader Rating: 17 (100%+)
Send a message via AIM to rearviewmirror Send a message via Yahoo to rearviewmirror
Default

Quote:
Originally Posted by badassrevo View Post
Most of the guys in my area are running it in the front, not the center.
That's interesting because no one here runs them in the front, only the center.
__________________
ARCTIC DOG RACING (Nitro free since 2009)

"Straights are for fast cars, curves are for fast drivers...."

8ight-E / 8ight-TE / T4 / Slash
rearviewmirror is offline   Reply With Quote
Old 05-17-2009, 11:45 AM   #5
Tech Elite
 
kufman's Avatar
 
Join Date: Feb 2004
Location: Elburn, IL
Posts: 3,429
Trader Rating: 6 (100%+)
Default

I was only interested in using it in the center to prevent the front tires from ballooning when I get on power. It doesn't seem to do much on that front. What I am really looking for is a spool on power and free diff action off power.
kufman is offline   Reply With Quote
Old 05-17-2009, 11:50 AM   #6
Tech Master
 
rearviewmirror's Avatar
 
Join Date: Nov 2008
Location: Melbourne / Austin
Posts: 1,844
Trader Rating: 17 (100%+)
Send a message via AIM to rearviewmirror Send a message via Yahoo to rearviewmirror
Default

Quote:
Originally Posted by kufman View Post
I was only interested in using it in the center to prevent the front tires from ballooning when I get on power. It doesn't seem to do much on that front. What I am really looking for is a spool on power and free diff action off power.
I'm not even sure about how it will effect the ballooning of the front tires. The guys here who run them on their electric say it aids greatly in lower speed turns. Apparently they can get around the bend much faster w/ the smart diff.
__________________
ARCTIC DOG RACING (Nitro free since 2009)

"Straights are for fast cars, curves are for fast drivers...."

8ight-E / 8ight-TE / T4 / Slash
rearviewmirror is offline   Reply With Quote
Old 05-17-2009, 12:09 PM   #7
Tech Elite
 
Join Date: Dec 2007
Location: Chicago, IL
Posts: 2,854
Trader Rating: 19 (100%+)
Default

I use the xray active diff in the front on occassion and it works pretty well. In the front, it basically allows the car to pull more around turns on power, but as soon as you let off the throttle, the diff opens up and you get more turn in. It worked very well when our local track had a big sweeper, you could feel the car pulling hard on power. No one could keep up with me on that turn. However, the off power steering can make the car twitchy in some circumstances.
__________________
Cars I've Owned: Tekno EB48 & SCT410, AE 8.2e, AE SC10 4x4, MBX6e Tekno V4, Xray 808e, Xray 8Te, Losi 810e, Losi SCTE 4x4, Losi 22, Hot Bodies Ve8, Losi 8te, and plenty of Traxxas

Sponsors: Visa, Mastercard, Amex, and my wife's bank account.
Edumakated is offline   Reply With Quote
Old 05-17-2009, 12:14 PM   #8
Tech Master
 
$Tmoney$'s Avatar
 
Join Date: Jun 2008
Location: Alta Loma
Posts: 1,529
Trader Rating: 28 (97%+)
Default

Quote:
Originally Posted by kufman View Post
I was only interested in using it in the center to prevent the front tires from ballooning when I get on power. It doesn't seem to do much on that front. What I am really looking for is a spool on power and free diff action off power.
glue the foams down in the tire to prevent ballooning or run tape around the phone that helps alot
$Tmoney$ is offline   Reply With Quote
Old 05-17-2009, 12:20 PM   #9
Tech Champion
 
Jason Pelletier's Avatar
 
Join Date: Jul 2007
Location: New York
Posts: 8,820
Trader Rating: 33 (100%+)
Default

I may be wrong but i think if you put softer springs in you will get more on power or accelleration (sp?) out of the corner
__________________
Island Raceway & Hobby
Jason Pelletier is offline   Reply With Quote
Old 05-17-2009, 12:59 PM   #10
Tech Fanatic
 
bradfox2's Avatar
 
Join Date: Oct 2008
Location: SRS,Az
Posts: 752
Trader Rating: 10 (100%+)
Default

run two .15s and pack it really really full of grease. I am running it like that and dont seem to have any issues. I think you might have to let it break in too. Mine seemed to balloon at first and then got better with age.
__________________
8ight-E 2.0, Tekin RX8 1350-T, 13/46, 6s zippy/neu power, fut. 4pk
bradfox2 is offline   Reply With Quote
Old 05-17-2009, 01:18 PM   #11
Tech Master
 
Shark413's Avatar
 
Join Date: Apr 2007
Location: SoCal
Posts: 1,554
Trader Rating: 24 (100%+)
Default

I have been using the SD in my Losi 8ight-T for the past month. At first it didn't seem to being working correctly, tires would balloon under hard acceleration. I then realized I had put the 90 degree ramps in by mistake (less aggressive) and not enough grease (centrifical force had sent most of it to the outside of the diff case). So changed to 120 degree ramps, removed two springs (using only two .15mm springs) and repacked with grease. On the third time out the diff started to work much better, much less ballooning now. I am using it in the center only.


No grease


90 and 120 degree ramps
__________________
AE B5M - Tekno SCT410 - Kyosho SC6, SCR & RB6 - HB D413
SCVRC - Santa Clarita Valley RC & HotRod Hobbies
Shark413 is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
Electric 1/8th Scale conversion kits. DJ1978 Electric Off-Road 19930 01-15-2018 12:33 PM
8T 2.0 polarismaster Nitro Off-Road 15880 02-02-2015 11:31 AM
Losi 8ight New Conversion questions! NEWBIE! hemi4me Electric Off-Road 6 03-08-2009 02:35 PM
MyRCBox.com - Adam Drake talks Smartdiff Sylvain Nitro Off-Road 19 01-17-2009 07:01 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 11:52 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