[TowerTalk] Lube om Hose clamps

[n8de at thepoint.net]

I'll be obnoxiously repetitive ... use SILICONE SEAL as the lubricant  
... after some hours .. the silicone seal will cure and 'harden',  
though it will still be pliable years later.

The silicone seal will act as a lubricant while tightening ... and  
will protect the 'gears' from moisture.

Use the type made for aquariums to avoid the problem of acetic acid  
formation while curing.

73
Don
N8DE



Quoting Jim Lux <jimlux at earthlink.net>:

> On 1/29/13 6:21 AM, john at kk9a.com wrote:
>> I have never had an issue with hose clamps galling and I tighten mine
>> pretty tight.
>>
>> From:	 K8RI <K8RI-on-TowerTalk at tm.net>
>> Date:	 Mon, 28 Jan 2013 14:45:58 -0500
>>
>> Although NeneSeize or other lube will prevent SS clamp screws from
>> galling, putting lube on them is a double edged sword.
>>
>
> Hose clamps?  A $1- $2 part? (the entire page in the McMaster-Carr
> catalog has no SS316 clamps over $2 each until you get up to some
> monster 3-4" units)  Galling is something you worry about when you need
> to repeatably install and remove the part, or where there is repetitive
> motion. Mounting screws going into a tapped hole in an expensive part,
> for instance.  Steel sparkplugs going into your aluminum head.
>
> Hose clamps aren't really intended to be reused.  They're a install
> once device (much like a metal zip tie)
>
> If you install the hose clamp, and 10-20 years from now, you decide you
> want to take the antenna down, you get out the hacksaw or dremel tool
> and cut the clamps off, and say, "well. $0.10/year for each clamp. an
> excellent deal"
>
> An exception would be for things like field day antennas or portable
> ops.. but there, there's other factors in play.. and non-optimal
> clamping is part of the game.  If it's a once a year thing, yeah, hose
> clamps might the way to go, so might a wrap of duct tape.  If it's a
> portable rig that you're going to put up and take down once a week or
> month then you need a different clamping technique.
>
> I've been casually designing a portable moonbounce/satellite ground
> station, and this is something I've been looking at for a number of
> years.  The clamps used on surveyor's tripod legs are a nice example of
> a rugged, quick, fairly strong clamp. Toggle clamps of various types as
> well. I haven't found a source for off the shelf bayonet or sleeve type
> locking collars (think about air hose fittings or quick disconnect
> hydraulic fittings) that match typical tubing sizes.
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