Aluminium tubing for telescopic support

[irving2008]

what about 25.5mm dia with a 3.175 thick wall, what length & qty are you wanting.

Phill

Thanks, but not strong enough and I need two tubes... The need is to provide a height adjustable support for a ~15kg load with a deflection less than 4mm when the support is at a 15degree angle.

[phill05]

What if you had a steel rod of say 19mm dia as the sliding part down the bore?

[irving2008]

What if you had a steel rod of say 19mm dia as the sliding part down the bore?

That might work. A quick mental calc says about 4mm deflection at 1m with 600mm of rod in a 600mm tube (ie min height would be 600mm). I need to do more accurate bending calcs and torsional calcs as may allow too much rotation Weight is about 2.9kg. Only downside is a 1" pole looks aesthetically 'flimsy' lol

[EddyCurrent]

Any use ?

Speaker Stand Heavy Duty Steel 063C Adjustable 35mm DJ PA 45KG - PAIR - EC | eBay