Horizontal Bar Location

#1

Just got my rollbar in and did the test fit, does the bar appear to be too high or am I just over analyzing? [file name=Harness_Bar.jpg size=31578]http://spece30.com/media/kunena/attachments/legacy/files/Harness_Bar.jpg[/file]

#2

It looks a bit too tall. Ideally you want it be parallel with your shoulders or < -30 degrees below your shoulders.

http://www.schrothracing.com/docs/Schroth_Installation_Checklist.pdf

See - http://www.schrothracing.com/docs/Schroth_Installation_Checklist.pdf

#3

When I am sitting in the car my shoulders sit approx 1" above the bottom of the slot so the angle from the top of the bar to my shoulder is less than 1". Not great with Geometry but I believe that is within the specs?

Next concern I have is I have the seats mounted to Sparco seat bases with sliders. After seeing a pic of the sliders mounted to floor of car recently I’m wondering if the seat bases were a bad idea. This puts my seat up approx 1.5" or so.

#4

On the Schroth site it shows a pic of the 30 degree angle from horizontal down, mine would be horizontal up as my harness bar is above horizontal of my shoulders. Does the 30 degree allowance go both ways when drawing a horizontal line from my shoulders?

#5

cganne wrote:

I was in the same boat as you. I tried sliders and it made the seat too tall for the horizontal bar, so I bolted the seat “directly” to the floor. The 30 degrees only applies downward. The harnesses need to sandwich down the HANS.

#6

wrap the shoulder straps so they emerge from the bottom of the bar instead of the top, should be enough to make them horizontal which is adequate. if not just add a little crossbar on the bottom to “push” the straps lower. no big deal.

#7

Thanks!

#8

jtower wrote:

Done properly, the harness straps can’t come from the bottom or top. They will come from the middle of the harness bar. The angle down is intended to keep you in place in a rollover.

Some guys like the seat flat on the floor. I like sliders and don’t feel like there is any significant difference in GC.