School me on sway bars - hollow vs solid - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to   Members

Suspension, Brakes, Drivetrain discuss the wondrous effects of boost and your miata...

LinkBack Thread Tools Search this Thread
Old 04-25-2018, 04:59 PM   #1  
Thread Starter
Join Date: Dec 2017
Location: Tulsa, Oklahoma
Posts: 37
Total Cats: 2
Default School me on sway bars - hollow vs solid

At the autocross meet earlier this month a couple of competitors were having a discussion which I was just passively listening in on.
One was mentioning to the other that he can get a different sway bar and still stay in class and specifically mentioned that the best choice is a hollow front sway bar.

What (if any) are the practical advantages of the hollow sway bar?
BGordon is offline   Reply With Quote
Old 04-25-2018, 05:06 PM   #2  
Junior Member
Join Date: Dec 2014
Location: Boston, MA
Posts: 183
Total Cats: 12

Equal stiffness and less weight
PatCleary is offline   Reply With Quote
Old 04-26-2018, 12:08 PM   #3  
Junior Member
Join Date: Aug 2014
Location: SE Michigan
Posts: 178
Total Cats: 12

What Pat said.

Torsion/Sway bar stiffness is proportional to the 4th power of the bar's diameter, and because of this the stress distribution is such that the outside of the bar is contributing dramatically more to the stiffness than the metal on the inside. The exact center of the bar is theoretically contributing nothing to the stiffness of the bar, but extra metal weighs more than air. Hollowing it out gets you most of the stiffness with a lot less weight.
OptionXIII is offline   Reply With Quote
Old 04-26-2018, 03:29 PM   #4  
Supporting Vendor
iTrader: (31)
Savington's Avatar
Join Date: Nov 2006
Location: Sunnyvale, CA
Posts: 14,746
Total Cats: 1,637

Savington is offline   Reply With Quote

Related Topics
Thread Thread Starter Forum Replies Last Post
WTT: 1 Solid motor mount for one non-solid icantthink4155 Miata parts for sale/trade 9 07-19-2010 09:30 AM
WTB: 1.8L swap kit, RB Hollow front sway, rollbar Nagase WTB 2 06-02-2010 05:26 PM
WTB: Center bezel, Gauge Hood, Carbon Fiber rear finish, RB hollow sway, 1.8 swap kit Nagase WTB 2 04-05-2010 01:10 PM
WTB: RB tubular 1 1/8" hollow front sway bar redrider706 WTB 0 03-03-2010 07:40 PM
WTB: Racing Beat Hollow Sway 94-97 autox_axela WTB 0 05-13-2008 04:10 PM

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 Off
Pingbacks are Off
Refbacks are Off

All times are GMT -4. The time now is 04:37 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 and affiliated sites.