Hanging Bar (Team Version)

[MrForbes]

1-1/2" Schedule 40 pipe is quite a bit larger than 1.5" outside diameter.

[bobl]

Quite right, so it is less than 18" between the standoffs.

[Madison]

Originally Posted by MrForbes

1-1/2" Schedule 40 pipe is quite a bit larger than 1.5" outside diameter.

The bar is not schedule 40 pipe, it is 1.5" DOM tubing with an actual OD of 1.5"

[MrForbes]

Thanks for the clarification.

[Sperkowsky]

We made one out of galvanized pipe and mounted it to the wall to be safe. It was expensive though.

[Retired Starman]

We are going to mount bars under our team built tower for one of Peachtree Region's Destination Einstein practice fields.

I purchased a 10 ft. length of 1 1/4 in thin wall conduit from Home Depot for less than $11.00. It has an outside diameter of 1.510 in. which is very close to the DOM tubing which should be 1.500 in.

DOM is smooth on the inside, hence it is used by FIRST in field elements that have to slide together. For our practice purposes, you don't need to go to the expense of using DOM since we are only interested in hanging on the outside. If you need something more precise than the conduit I mentioned above, you can go with ERW tubing. Identical to DOM on the outside, ERW has a small ridge inside where the welding was done.

For my money, I can live with 10 thousands of an inch oversize. There may be teams, however, who need the precision of the DOM. Hope they have a budget for it!

Dr. Bob

[GeeTwo]

Originally Posted by Retired Starman

I purchased a 10 ft. length of 1 1/4 in thin wall conduit from Home Depot for less than $11.00. It has an outside diameter of 1.510 in. which is very close to the DOM tubing which should be 1.500 in.

DOM is smooth on the inside, hence it is used by FIRST in field elements that have to slide together. For our practice purposes, you don't need to go to the expense of using DOM since we are only interested in hanging on the outside. If you need something more precise than the conduit I mentioned above, you can go with ERW tubing. Identical to DOM on the outside, ERW has a small ridge inside where the welding was done.

For my money, I can live with 10 thousands of an inch oversize. There may be teams, however, who need the precision of the DOM. Hope they have a budget for it!

Dr. Bob

This was exactly our reasoning for Aerial Ascent (2013). We built our practice pyramid out of rigid conduit.