The od spec for bar is usually not slip fit accurate or is extruded bar
that round, so it will likely need turned to fit. The standard mill
spec for that size is +/- 0.024". Might be lucky tho with the
combined tube and bar mill tolerances.
All of the 3" od x .125" wall tube couplers I have have turned od.
Grant KZ1W
On 6/8/2019 9:22 AM, john@kk9a.com wrote:
??2 3/4 aluminum rod is pretty available.???? Here is a 4" long piece:
https://onlinemetalsupply.com/2-750-2-3-4-inch-6061-t6511-aluminum-round-rod/
It's easy to drill a ??1 1/4 hole through it if you have the right
equipment.
John KK9A
Jeff Blaine AC0C wrote:
I'm rebuilding my 40m 4-sq verts and have some 15' lengths of 3" OD/
2.75 ID tubing to use on the base end.?? And for the "stinger" end, I
have some tapered elements off an old yagi that are 1.25" OD on the
bottom of the 17' length.
Other than buying some concentric lengths of aluminum to step from the
1.25 OD stinger up to the 2.75 ID base tubing, any good ideas of an
interposer that would take up some of the space?
73/jeff/ac0c
alpha-charlie-zero-charlie
www.ac0c.com
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