Not really, but one data point:
Hoadley (in Understanding Wood) says that for better bending species
(among which he lists white oak, but not red), one-inch stock can be
free-bent to a 12-15" radius, and down to a 2" radius with a
restraining strap. So I would GUESS that 1" of red oak could be bent
to your desired 6-7" radius with a restraining strap.
Alex -- Replace "nospam" with "mail" to reply by email. Checked infrequently.
Scroll down a bit and you'll see that they state this...
Based on air-dried 1" thick stock at 25% moisture content going into
the steam box, the smallest bend radius you can achieve without risk of
failure is shown in the table below. You can get tighter radii but at
Species Smallest Radii
Oak (red and white) 2"
This is with compression straps, I'm sure.
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