I'm checking with my local suppliers for roll cage tubing, and an interesting question has come up. I'm looking for 1-5/8 x 0.134" tubing. Several people have 1-5/8" x 0.120" wall, but I haven't found 1-5/8 x 0.134" wall yet.
One of the local suppliers has offered tubing which is 1.66" on the OD, with a nominal 0.139" wall. Looking at the charts, this looks like it is actually Schedule 40 pipe material. The size matches pretty close to what 1-1/4" Schedule 40 should be (1.38 ID x 0.140" wall).
I can't tell from the rulebook whether this is allowed or not. Dimensionally, it fits the minimum OD and wall thickness requirements. Advice would be appreciated before I buy any tubing.
Steve.