I have a large dual roller inductor on eBay.

http://cgi.ebay.com/ws/eBayISAPI.dll...m=5729365 941

Formerly motor driven, removed from commercial HF transmitter.
Silver plated, 3/8 inch edge wound, 4.5 inch outer diameter.
Total length 11.75 inches, 44 turns. Unknown inductance.
Dual contact wheels on each coil, plus what appears to be aux parallel
contacts for lower inductance as required. Looks like 1/4 inch shafts on
each coil.
Outer insulator frame measures 15inches x 5.5 inches. About 18 inches
total length.
Needs to be dismantled and cleaned, few bolts and tension springs
missing. I can see no reason this would not be fully functional with
minor work.
Coil is packaged and ready to ship.
Pictures here.
http://members.rennlist.org/warren/coil1a.jpg
http://members.rennlist.org/warren/coil1b.jpg
http://members.rennlist.org/warren/coil1c.jpg
http://members.rennlist.org/warren/coil1d.jpg

Also have another coil which may be put on eBay later
http://members.rennlist.org/warren/coil.html

Warren
VO1KS