View Poll Results: What front sway bar do you use?
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STR Prep - Sway Bars
Joined: Aug 2007
Posts: 652
Likes: 1
From: San Deigo
Originally Posted by markhs2
I'd like to know where the posted rates for the Saner/Modiction bar are comming from. I've seen the following posted: S-566 lbs/in m-644 H-739 When I use Phun formula with .7 front Motion ratio and .67 rear I get: S 823 lbs/in m 959 h 1107 Anyone have some input on this? Thanks
The lower, posted rates are taking into account the non verticle endlink position and are therefore lower. My question would then be how were those rates arrived at?
I guess, more to the point, the question is:
For someone thats used a number of bars such as the Gendron, Karcepts, Ankeny which have rates indicated by the manufacturer. Have you found that the rates for them are reliable/uniform from on brand to another.
In other words did the Saner set to 556 lbs/in work and feel like the other brands set to the same rate?
This might be a tall order but has someone done it?
Joined: Apr 2016
Posts: 123
Likes: 18
From: NC USA
I realize that this thread is pretty ancient & the S2000 is no longer a top dog in STR. However I've been doing some research on the MX5 front bar in the rear of our cars and wanted to share. This should be helpful for anyone considering a proper RSB like the karcepts.
The number I saw for the MX5 bar is 130 lbs/in. This was probably listed as the wheel rate of the bar, and it is incorrect to compare this to 400 lb/in for '02 AP1 or 311 for AP2. A true 130 lbs/in sway bar is pretty flimsy, and the MX5 bar wasn't as weak as i expected. this was my clue to look into this. Anyway here are the rates I found.
MX5 soft top bar: 267 lbs/in (this number is from Rob Robinette's calculation and assumed to be true)
MX5 retractable hard top bar: 311 lbs/in (used Rob Robinette's calculator. Assumed that the only difference is the overall diameter of the bar, 22 instead of 21mm. There are threads on miata.net supporting this)
So the hardtop MX5 bar is pretty much identical to the AP2 rear bar, and the MX5 soft top bar is 18% softer than that.
The number I saw for the MX5 bar is 130 lbs/in. This was probably listed as the wheel rate of the bar, and it is incorrect to compare this to 400 lb/in for '02 AP1 or 311 for AP2. A true 130 lbs/in sway bar is pretty flimsy, and the MX5 bar wasn't as weak as i expected. this was my clue to look into this. Anyway here are the rates I found.
MX5 soft top bar: 267 lbs/in (this number is from Rob Robinette's calculation and assumed to be true)
MX5 retractable hard top bar: 311 lbs/in (used Rob Robinette's calculator. Assumed that the only difference is the overall diameter of the bar, 22 instead of 21mm. There are threads on miata.net supporting this)
So the hardtop MX5 bar is pretty much identical to the AP2 rear bar, and the MX5 soft top bar is 18% softer than that.
