How and where to instal the ball busters

[Skully]

Is there a correct place to install the ball buster seat belts for the shoulder harnesses, on the floor. I notice that there is a slot in the seat where I guess the belt slips thru, to be attached to the floor, any ideas.

[Bob Broberg SPF667 460BB]

John, you mean the submarine belts? They must be secure. Probably through a frame/support bar or large steel plate beneath the floor. Don't drill the carpet, cut it. The prime reason for the belt is to keep the waist belt low on the hips. Should not be difficult install. Use good size, quality, grade 8 or better bolt, perhaps 5/8 inch.

Hope this helps

AZ Bob

[Skully]

Thank you Bob.

[vettestr]

A trick for putting holes in carpet is too melt the fibers with a pencil type soldering iron. A drill just balls up and cutting a hole sucks, try the iron.

[Car Nut]

Originally Posted by vettestr

A trick for putting holes in carpet is too melt the fibers with a pencil type soldering iron. A drill just balls up and cutting a hole sucks, try the iron.

Keep a fire extinguisher handy.

[mikiec]

On the FFR there is a steel plate welded on the frame that sits under the seat. Use that.

[ItBites]

Most of the seat belt hardware uses 7/16 bolts. I use GR-8 fine thread, with nyloc GR-8 nuts. Must go thru a frame member or use back-up plates as has been mentioned. I use two weld tabs with the belt hardware in-between in order to correctly use the fastener in double-shear. Your harnesses should have similar mounting (double-shear). Shoulder harnesses should wrap around a harness bar - alternately, the double weld-tab, double shear method is less desirable, but acceptable. See seat belt manufacturer information on where to mount the anti-sub belt. It must be a specific distance from the fall line along your chest to the floor. Shoulder harnesses should NOT have an angle 'up' to the mounting or have a 'down' angle more than 10 deg.

[Skully]

Thank everyone for all of the great info, will put it to good use. There is a slot in the seat where I guess the belt fits through and fastens to the floor with the hard wear that Finishline provided.

[vettestr]

Originally Posted by Car Nut

Keep a fire extinguisher handy.

WHAT !!!! A 30 watt pencil tip soldering iron won't ignite gasoline.

[Maricopa]

How and where to instal the ball busters

Mine rides in the passenger seat....

[Car Nut]

Originally Posted by vettestr

WHAT !!!! A 30 watt pencil tip soldering iron won't ignite gasoline.

Some people I know could get it to burn with 10 watts.

[vettestr]

But I used a rubber hammer???

[Danr55]

"WHAT !!!! A 30 watt pencil tip soldering iron won't ignite gasoline.
Some people I know could get it to burn with 10 watts. "


If it didn't start a fire it would at least knock a hole in the wall!

[Mulv]

You don't say whether your submarine belt is a 5 point or 6 point. I always have used 6 point and attach them to the floor using the seat mounting bolts and fender washers. The theory being that if the seat comes out of the car you might as well go with it and then your family will have a body to bury instead of just ashes to scatter from the massive fire in that sort of wreck.

The 5 point attachment for me was always done with a bar with holes drilled in the ends and fitted to the seat mounting bolts and mounted as above. The theory is the same as above too.... ashes blow around and can blind the other competitors.

The anti sub belt is only to hold the belts down so that you break your pelvis in a big crash rather than squashing all of your internal organs, pianos and harpsichords. It is not there to take any deceleration forces so the mount points are not required to be super robust just strong enough. That is why my method always passed tech in NASA, SCCA and FIA races that I did.

Jeff's method for avoiding "Tornado Carpet" is a good one that I have used as well. Even though both of us enjoy a good blaze (see flying seat above) one assumes that you have enough gray matter to not ignite your ride..