I have a question concerning 'sleeving' (can't think of a better way to describe it) - I have a 16' x 2.5" OD thick-wall aluminium tube that will be used as a stub mast, would inserting 6' x 2" OD th
I know that there's an "ultralight" aircraft that does exactly that to strengthen the wing spar. Without the sleeve, it's rated for one person but with the sleeve it's rated for an increase in gross
Steve, The sleeve would definitely add strength. The lateral force from the wind load on an antenna mounted on the mast puts the most stress at the bottom of the mast, think of a 16 foot lever arm. I
Hi Steve - I am successfully using that type of construction on elements in my Log Periodic. I have as many as 3 or 4 layer of tubing and as a quick "swag" at strength I just added the resistance to
Sleeving works, UST sells 20' x 2" x 1/8 wall steel masts with the lower 10' sleeved to 1/4". With a 2.5" od (what is "thick wall" and what is the alloy and temper?) you potentially have a very stron
Don't forget that strengthening the mast so it won't bend means that force is now presented elsewhere, i.e., on the tower itself. Make sure the tower can handle it. Chris KF7P _______________________
The sleeve would definitely add strength. The lateral force from the wind load on an antenna mounted on the mast puts the most stress at the bottom of the mast, think of a 16 foot lever arm. I would
After reading the original post and all the replies, I'm still wondering WHERE the 'junction' of the internal 'strengthening' and the out mast will be in relation to the tower top/bearing. If there i
Thanks guys, both off and on reflector for the replies. What a great source of knowledgable people this is. To answer the query, the 'thick wall' is 4.5mm, which in non-metric terms equates to 0.23 i
describe it) - I have a 16' x 2.5" OD thick-wall aluminium tube that will be used as a stub mast, would inserting 6' x 2" OD thick-wall aluminium tube into the bottom of the tube add to its' 'streng
I managed to find the answer to a question that has bothered me re reinforcing with internal sleeves - do the ends of an internal sleeve need to be pinned to the outside sleeve to act as a single str