On Sun, 26 Aug 2012 08:36:24 +0000 (UTC), "J.G."
wrote:

On Sat, 25 Aug 2012 08:20:22 -0700, Jeff Liebermann wrote:

http://www.wpsantennas.com/fm2-antenna-pole-mount.aspx

I noticed this has two sets of mounting holes, so that you can reverse
the short arm of the J.

Why not just get the correct mount for the eaves? There's only so
much fabrication before it's cheaper, easier, and better to get the
right mounting hardware.
http://www.eavemounts.com
https://www.google.com/search?q=satellite+dish+eave+mount&tbm=isch
or see my original posting.

If you're not a believer, calculate the wind load on the dish at your
maximum expected wind gusts. Clamp the mount into a bench vice,
attach a load cell, and pull on the mount at the calculated tension.
On big installs, I actually do this.

http://dl.ubnt.com/datasheets/rocketdish/rd_ds_web.pdf
The Rocket dish is about 1 meter in diameter.

Handy spreadsheet:
http://www.ok1dfc.com/eme/10mprojekt/Wind%20load.xls
Use the 2nd tab for a solid dish.
60 mph = 97 km/hr
From the graph for a 1 meter dish, that's 750 newtons or 169 lbs.

Can your modified mount survive a 169 lb pull at the middle of the
dish? I don't think so. Note that the wind load varies with the
square of the wind speed, so getting max wind speed is fairly
important.







--
Jeff Liebermann
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558