I found this at a Whitley site last year – it’s a heavy steel ring with an outer thread and five teeth which take small set screws. The OD is approx 19cm (7.5″).
It’s quite corroded so no numbers – It doesn’t look like airframe to me and I wondered if it was some sort of adaptor nut from a Rotol hub. Does anyone recognise it? I can’t see it in any of my books…!
By: Creaking Door - 14th February 2011 at 11:46
…I wondered if it was some sort of adaptor nut from a Rotol hub…
I’m not sure what the technical description would be but it definitely looks ROTOL to me. I’ve removed a similar piece from the end of a ROTOL propeller blade; its purpose is to retain (and pre-load) the bearings that sit between the inner and outer cuffs of the blade…
…if that makes any sense. 😮
By: Arabella-Cox - 14th February 2011 at 07:20
Pre load nut
Pre-load nut from an RXF 75-deg Rotol airscrew?
DAI
Sign In
February 13, 2011 at 8:45 pm