I recently finished the adaptor plate for an HDX572 foundation to an HDX589.
The HDX572 foundation used 1 1/8 inch anchors and the foundation was oversized
with almost 18 yards of concrete. The plate was made from ¾ inch steel cut
with a water jet. The bolts that were used to mount the HDX589 to the plate
were 1 1/8 inch Grade 8 with all structural washers and nuts.
Seems to be working great and has already seen some high winds.
You can view some of the pics of the install at my QRZ page
http://www.qrz.com/db/N7TR and then clicking on the HDX572 to HDX589 Adaptor
plate link.
Thanks...
Rich
Rich N7TR
ex KI3V, N3AMK, WB3JOV
www.n7tr.com<http://www.n7tr.com>
http://www.qrz.com/db/N7TR
Telnet: dxc.n7tr.com N7TR DXCluster
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