DaveW, some awesome info there! I'm with Caito on this one, in terms of my application of Rotary Dampers i guess the stiffness could be less of a concern? Although laterally, the linkages have almost 1mm of play within them... (Although this won't be a consideration for 'stiffness') i've long thought that this has to be intended to compensate a bending/twisting swingarm??Caito wrote:Could someone define installation stiffness please? Found nothing on google (besides some F1t threads).
Thank you very much!
Again reviving an old topic to correct a few things - rotary dampers were not used with limited sucess in F1. Indeed rotary dampers were used with massive sucess by some teams. Sachs in 2002 developed and produced rotary dampers in close cooperation and with design specifications by Rory Byrne, Ferraris Chief Designer. These dampers, made out of Titanium were called revolutionary back then and were an innovation in F1. They were used on the Championship Winning F2003 and F2004 and Ferrari used them for many years. I am not sure about it, but i think the Championship Winning F2007 and F2008 used rotary dampers, too. Other teams like Sauber and Toyota "copied" Byrnes idea and used the Sachs rotary dampers, too, for some years. Brawns Championship Winning Car of 2009 also used rotary dampers. Rotary dampers had big advantages in terms of packaging what resulted in a much smaller coke-bottle area of the car with obvious benefits for aerodynamics. They also saved weight and stiffness was another advantage and less moveable parts were the other advantage, what was also why they had less friction than a conventional set-up. "Stiction", even if i do not remember that really being a problem, but as Zander tells that, it probably was one disadvantage. But with all the other benefits rotary dampers were definetely an advantage in comparison to a conventional set-uo and the reason for rotary dampers to disappear was mainly because they were extremely expensive. With Cost Reduction being agreed in the early 2010's, the 30 000+ dollars for one pair of rotary dampers was just too much money, so they disappeared. But they were used with massive sucess in F1 between 2003 and 2010, winning nine F1-Championships in 2003, 2004, 2007, 2008 and 2009.mzivtins wrote: ↑Tue Apr 10, 2012 2:18 pmHello all!
My name is Mark, i'm a long-time lurker here, love everything i read and wondered if you guys could help me out a bit...
I'm interested in the rotary suspension that a few f1 cars have used with, urm... 'limited(?)' success.
It seems the idea on paper is all good, but in reality the idea never really lived up to expectation, especially suffering from 'stiction' in its behaviour as a few F1 engineers have 'complained' about.
What sort of experience have you all got in using rotary dampers on real life? i have read the article on SCARBS site and its fantastic and the best write up i have ever found!
http://scarbsf1.wordpress.com/2011/11/2 ... y-dampers/
However the secrets of setup still elude me... what properties should the linkage, oil and oil vanes have to provide the most consistent damping force throughout all heat ranges?
Sorry if this sounds like a complete brain-fart, but im wrestling daily life with my beloved Suzuki TL1000r, which of course suffers greatly from the awful/cheap rotary damper