I just picked up a Seagulls Ultimate Bipe with an OS 120FS in it, appears to be the SEA50 model, the only thing wrong with it is it is missing the wing tubes. I hoping someone on here has one and would be willing to send me the OD measurement for top and bottom wing tubes. I have measured the ID of the holes in the wing and got .483, I just want a second check before spending the money on some tubes. I appreciate the help on this one.

Fun2Fly...

Yes, I have one but won't be able to get to it until Tues or Wed of next week 9/11 or 9/12. SIG sells seagull products and I believe they have the ultimate parts. I'll post the OD for you next week.

Both top and bottom wing tubes are the same OD: 11.94 mm / .470"