65LikesTune With Camber Links
02-08-2014 | 01:41 PM
#1621
Tech Addict
Joined: Oct 2007
Posts: 563
From: Gladstone, MI
It doesn't matter if it's a 2wd, 4wd, rear motor, mid motor, buggy, truggy, sct, 1/5, 1/8, 1/10, 1/12, 1/16 scale , etc. Balance is balance and this method automatically finds it and the behavior is always the same. A clue into your setup is that you should never have a higher weight oil in front than rear. If you do it's because you aren't running enough pack up front and need to go to smaller hole pistons. I suspect that while your springs may be balanced, your oil isn't. A balanced system won't have the same pistons front to rear since pack isn't only determined by the holes in the piston but also by the stroke length of the shock. These aren't equal. Due to these differences oil weights will be different as well. The drop test should work with oil installed too.
Is their any variation involved when selecting piston/oil combinations when using these pistons?
02-08-2014 | 01:51 PM
#1622
In your case the rear springs are probably in the heavy spring rate range so the softest is getting you close to where the hardest front springs are for balance.
02-08-2014 | 02:53 PM
#1623
It just depends on what range the rear springs are compared to the front. As a comparison when I did some balancing on a serpent 1/8 buggy it took the hardest rear springs they make and one of the softest fronts. Your problem is exactly the opposite. Changing ride height definitely doesn't solve anything.
In your case the rear springs are probably in the heavy spring rate range so the softest is getting you close to where the hardest front springs are for balance.
In your case the rear springs are probably in the heavy spring rate range so the softest is getting you close to where the hardest front springs are for balance.
I don't believe that is the case here.
• MUGE0574 - Front Spring (896 N/m) Very Hard 1.5/7.50T
• MUGE0562 - Rear Spring (699 N/m) Soft 86mm, 1.6/11.0T
If you look at the force rating for each, the front has 197N/m more force than the rear. This was the last combination of springs that I tested and the difference in frequency is easily noticed.
I have every Mugen spring made for this buggy, so it must be that everyone racing this buggy with Mugen springs are running a setup without balanced springs.
02-08-2014 | 03:14 PM
#1624
On my Serpent example even using the hardest rears and next to softest fronts, the fronts were still heavier than the rears rating wise. So with that combo you listed you probably aren't too far off. Maybe go to a different brand spring so you can go even softer in the rear.
02-09-2014 | 05:47 PM
#1625
Tech Regular
Joined: Jul 2010
Posts: 462
From: In the Greater Ladysmith, WI metropolitan area
Has anyone not been able to balance the springs? I've got all available black and silver springs for the mbx6 and have tried all possible combinations as well as all shock positions and cannot acheive balance. Even if I go to opposite ends of the spring rates on front and rear. ie, if I use very hard front springs and stand the front shocks as vertical as possible and use soft rear springs and lean the shocks as horizontal as possible the rear will still spring up first. Both front and rear ride height is set to 27mm.
Any ideas where to go from here?
Any ideas where to go from here?
02-10-2014 | 09:57 AM
#1626
Joined: Mar 2011
Posts: 2,766
From: Houston
This must be a problem with 1/8 scale. The RC8 has the same problem. You can't balance it with the spring options they offer. You could release a new 1/8 scale buggy with balanced springs and people would think it was the best car ever!
02-10-2014 | 11:09 AM
#1627
Tech Regular
Joined: May 2012
Posts: 398
From: Hamburg
02-10-2014 | 02:17 PM
#1630
In the case of the sc104x4, I ended up running front springs in the rear because the rears just weren't stiff enough. Just because a manufacturer has an intended use for something, doesn't mean you have to use it that way! 
02-10-2014 | 02:21 PM
#1631
is there a good way to bench test/experiment with oils/pistons/pack? (hell even droop/limiters) or any good reading on the dampening aspect of our shocks? I feel like i'm a bit lost when it comes to those things. it's such a daunting task to test at the track that I've never really done much testing...and now that I don't have a local track to test at....I'm looking for alternative ways of testing in order to figure out the cause/effect of changing the internal shock packages.
02-11-2014 | 02:59 AM
#1633
Tech Fanatic
Joined: Aug 2008
Posts: 903
From: San Antonio, Texas
You just have to buy other OEM Springs to get balance, at least that's what I did on my RC8.2E. Thought I had a great set up until I played with the springs to find a balanced set and wow what a difference. Losi and Kyosho have a wide range of springs. On the Tekno SCT410 thread here on RCTECH someone put together a list of all major OEM 1/8 scale springs and sorted the front and rear springs from lightest to heaviest. Great help in balancing 1/8th scale springs since my Tekno SCT runs 1/8th scale shocks. (BTW on the Tekno SCT410 its Green rears and Gray fronts that is working Plus 8X1.3 & 32.5 Wt in ft and 8X1.4 & 37.5wt in rear) - see Fred I do pay attention! Still working on the pistons and oil on the RC8E
02-11-2014 | 08:00 AM
#1634
what are your recommendations for balancing pack?