Community
Wiki Posts
Search
Like Tree5Likes

SC10 4x4 Thread

Thread Tools
 
Search this Thread
 
Old 07-02-2012 | 01:11 PM
  #25936  
Wildcat1971's Avatar
Tech Prophet
iTrader: (84)
 
Joined: Apr 2012
Posts: 17,389
From: Arizona
Default

So this sounded good to me, but then I saw how much 4 oz of lead it is.......Holy cow, how did they ever get it to fit.
Wildcat1971 is offline  
Old 07-02-2012 | 01:18 PM
  #25937  
Tech Master
iTrader: (13)
 
Joined: Nov 2009
Posts: 1,207
Default

Originally Posted by Wildcat1971
What do you mean? I have seen home made videos. If you mean national events, then I dunno, a lot of races are done indoors these days because weather wont effect you. Nothing like planning an event for months and getting rained out.
yea national races. i might be going to the short course nationals over my way this year and thats outside. so...

http://www.rctech.net/forum/racing-f...c-madness.html
twisted is offline  
Old 07-02-2012 | 01:21 PM
  #25938  
Tech Master
iTrader: (13)
 
Joined: Nov 2009
Posts: 1,207
Default

Originally Posted by Krio
The more weight up front the less it turns. It's counter intuitive, but think about inertia: if the back half of the truck is heavier it will generate more friction at that end, but it's not linear enough to counter the extra force needed to redirect that mass in a corner.
one would think that more weight up front would give more steering as its putting more weight on the front tires. i think of it this way, if you put the weight in he rear its gonna cause the rear end to swing more in the corners, like a pendulum effect, correct ?
twisted is offline  
Old 07-02-2012 | 01:23 PM
  #25939  
RCW
Tech Regular
iTrader: (33)
 
Joined: Jan 2011
Posts: 308
From: Pataskala, Ohio
Default

I put 4.5oz in the frt of mine 2 weeks ago. I have only had it on the track once since then on a large outdoor track. It seemed more stable and jumped better.The weights will fit under the servo.
RCW is offline  
Old 07-02-2012 | 01:24 PM
  #25940  
murky123's Avatar
Tech Master
 
Joined: Apr 2010
Posts: 1,031
From: netherlands
Default

Originally Posted by Krio
The more weight up front the less it turns. It's counter intuitive, but think about inertia: if the back half of the truck is heavier it will generate more friction at that end, but it's not linear enough to counter the extra force needed to redirect that mass in a corner.
If I want my car to turn less, weight is not the first option where Im looking at
murky123 is offline  
Old 07-02-2012 | 01:34 PM
  #25941  
Tech Champion
iTrader: (159)
 
Joined: Mar 2008
Posts: 5,719
From: At dirt tracks in Michigan!
Default

Originally Posted by murky123
If I want my car to turn less, weight is not the first option where Im looking at
Of course not, but it's not just about weight. It's about weight bias. Out of the box with a 550 motor and a stick pack the sc10 has a 42%/58% front/rear bias. This is in stark contrast to most 4wd rc cars. Most are much closer to 50/50. My 8th scale buggy is 48/52. This is the a big reason why saddle packs are used: moving the weight forward. There is only so much mass that can me moved on the sc10 and since weight is typically added anyways most people put it behind the front servo or in the front left corner if they are still running a stick pack.
Krio is offline  
Old 07-02-2012 | 02:08 PM
  #25942  
CraigMBA's Avatar
Tech Elite
iTrader: (22)
 
Joined: Mar 2003
Posts: 2,838
From: Valley of the Dirt, CA
Default

Somebody remind me, didn't I write a manifesto about weight bias issues on the SC10 4x4 a few month back?

That's right, I did!

Originally Posted by CraigMBA
I tried that - it worked pretty dialed with 2 1/2 oz in the front. Once I went to 3 1/2oz, it was too much for the blues.
Next thing you know, all the cool kids are going to be doing it.

Originally Posted by Wild Cherry
craig , 2 1/4 oz on the ft end , no weight else where..
Thank you Dirt for validating my life.
CraigMBA is offline  
Old 07-02-2012 | 02:10 PM
  #25943  
Wildcat1971's Avatar
Tech Prophet
iTrader: (84)
 
Joined: Apr 2012
Posts: 17,389
From: Arizona
Default

lol, That is for a 550 right, I run a 540, is it still off by a lot? I mounted my esc far back on the left with a stick pack config and added weight to the rear 1oz....... so your saying , this is wrong, lol.
Wildcat1971 is offline  
Old 07-02-2012 | 02:23 PM
  #25944  
CraigMBA's Avatar
Tech Elite
iTrader: (22)
 
Joined: Mar 2003
Posts: 2,838
From: Valley of the Dirt, CA
Default

Originally Posted by Wildcat1971
lol, That is for a 550 right, I run a 540, is it still off by a lot? I mounted my esc far back on the left with a stick pack config and added weight to the rear 1oz....... so your saying , this is wrong, lol.
It's not wrong, so much as it's a tuning option of sorts.

If you want the chassis to have more transitional steering, moving weight to the back helps because it increases weight transfer by putting more weight in the rear to transfer.

If you want the chassis to have more steady state (like a sweeper) steering, putting more bias to the front helps.


Originally Posted by murky123
If I want my car to turn less, weight is not the first option where Im looking at
Before they outlawed moving ballast and spec'ed F/R weight bias, that's exactly how F1 engineers balanced the tire temps F/R. It's gone this season, which is one reason why they are having so much trouble with tires on one end or the other going off and destroying the balance.
CraigMBA is offline  
Old 07-02-2012 | 02:36 PM
  #25945  
Evil Genius jr.'s Avatar
Tech Master
iTrader: (28)
 
Joined: Jul 2011
Posts: 1,758
From: Northern, VA
Default

I have my weight right in front of the saddles, also keeps it centered.
Has anyone else noticed tires wear faster on the RR and LF corners?
Evil Genius jr. is offline  
Old 07-02-2012 | 02:40 PM
  #25946  
Wildcat1971's Avatar
Tech Prophet
iTrader: (84)
 
Joined: Apr 2012
Posts: 17,389
From: Arizona
Default

Originally Posted by Evil Genius jr.
I have my weight right in front of the saddles, also keeps it centered.
Has anyone else noticed tires wear faster on the RR and LF corners?
Are you driving on 2 wheels?
Wildcat1971 is offline  
Old 07-02-2012 | 03:02 PM
  #25947  
Evil Genius jr.'s Avatar
Tech Master
iTrader: (28)
 
Joined: Jul 2011
Posts: 1,758
From: Northern, VA
Default

Only on the straights lol.
Evil Genius jr. is offline  
Old 07-02-2012 | 03:24 PM
  #25948  
Tech Master
iTrader: (13)
 
Joined: Nov 2009
Posts: 1,207
Default

[QUOTE=CraigMBA;10929482]Somebody remind me, didn't I write a manifesto about weight bias issues on the SC10 4x4 a few month back?

That's right, I did!



remind me to read that.
twisted is offline  
Old 07-02-2012 | 05:26 PM
  #25949  
Tech Adept
iTrader: (3)
 
Joined: Sep 2011
Posts: 212
Default

Has anyone tried running Koyosho big bores on this truck I love them on my 2wheel and was thinking they might be good on a 4wheel
umpy907 is offline  
Old 07-02-2012 | 06:41 PM
  #25950  
MantisWorx's Avatar
Tech Champion
iTrader: (28)
 
Joined: Jun 2010
Posts: 5,955
Default

Originally Posted by umpy907
Has anyone tried running Koyosho big bores on this truck I love them on my 2wheel and was thinking they might be good on a 4wheel
The FT shocks are very good, dont think you will get better performance with the Kyosho big bores IMO.
MantisWorx is offline  


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service -

Copyright © 2026 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.