Weight box options?

[Mark Yacavone]

Originally Posted by Hacksaw

How about steel flat bars as an option? Two 1/2" threaded rods mounted and stack up multiple pieces as needed.

It's okay for a start, but the bolts/ nuts have to be welded.
But one needs a weight box for the ability to fine tune.
Look at the scale variation that occurred last week.

[Hacksaw]

Originally Posted by Mark Yacavone

It's okay for a start, but the bolts/ nuts have to be welded.
But one needs a weight box for the ability to fine tune.
Look at the scale variation that occurred last week.

Have to disagree here. No welding required unless it's mounted as permanent ballast. As removable ballast, plain nuts to secure are fine. Iv'e used 10 lb bars to fine tune quite easily.

[Mark Yacavone]

Originally Posted by Hacksaw

Have to disagree here. No welding required unless it's mounted as permanent ballast. As removable ballast, plain nuts to secure are fine. Iv'e used 10 lb bars to fine tune quite easily.

I'm at a loss here, bud. I haven't had a rule book in years.
The way I remember it, weight attached to frame is considered permanent i.e. welded.
Removable weight goes in the box.
Now, just because you've been doing it your way, doesn't mean a whole helluva lot as of late. ;-)

[Mark Yacavone]

Just checked with a preeminent NHRA tech man.
Nuts have to be tack welded on ballast attached to the frame.

[Hacksaw]

Originally Posted by Mark Yacavone

Just checked with a preeminent NHRA tech man.
Nuts have to be tack welded on ballast attached to the frame.

My rule book says: Removable weight must be securely mounted to the frame or frame structure by a minimum of two 1/2" diameter steel bolts per 100 lbs, or one 3/8" steel bolt per 5 lbs, all other weight bars, pucks, etc. must use 1/2" diameter SAE grade 8 bolts for attachment. Every Comp car or Pro Stocker has multiple places to bolt weight in and the nut has no weld.

[FED 387]

if you really want to be safe use double nuts or NYLOK nuts on each bolt/stud where you are using removable weights--- you can also use bolts with a hole drilled in it and put a spacer(few washers) run the nut down tight then put a hairpin clip(cotter pin) thru the hole to keep the nut from backing off--REALLY -If you follow NHRA guidelines and use the required bolts etc. you should be OK do not understand why they do/would not accept that method ------weight boxes are for "loose"" ballast like bags of lead shot, loose lead bars etc.iron pieces--.not something that is "securely" fastened down

[Mark Yacavone]

Originally Posted by Hacksaw

My rule book says: Removable weight must be securely mounted to the frame or frame structure by a minimum of two 1/2" diameter steel bolts per 100 lbs, or one 3/8" steel bolt per 5 lbs, all other weight bars, pucks, etc. must use 1/2" diameter SAE grade 8 bolts for attachment. Every Comp car or Pro Stocker has multiple places to bolt weight in and the nut has no weld.

Okay. Is that under general regs.? What does it say under S/SS?
Not a safety rule ,per se, but the idea is so that one couldn't easily pull out a bunch of weight for qualifying, etc. ,as I recall.
I realize that Comp cars put weight in all over the place, hose clamps and all, but we are discussing a Stock Eliminator car here.

[Mike Merk]

Originally Posted by Mark Yacavone

Okay. Is that under general regs.? What does it say under S/SS?
Not a safety rule ,per se, but the idea is so that one couldn't easily pull out a bunch of weight for qualifying, etc. ,as I recall.
I realize that Comp cars put weight in all over the place, hose clamps and all, but we are discussing a Stock Eliminator car here.

BALLAST
Weight box permitted. Only 100 pounds removable ballast permitted, including box (two-box maximum with 50 pounds each). Must be attached to frame or crossmember with minimum of two 1/2-inch bolts. May not be attached to roll bar or cage. Additional ballast must be permanently attached to frame or crossmember, i.e., bolted with at least two 1/2-inch bolts per 100 pounds, with nut welded to bolt. See WEIGHT. See General Regulations 4:2.