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By: - 17th September 2014 at 17:35 Permalink - Edited 1st January 1970 at 01:00
It appears to be a left hander so it's not going to be from anything with a Merlin. Could be for a Griffon though.
Anne
By: - 17th September 2014 at 21:51 Permalink - Edited 1st January 1970 at 01:00
An unusual one that. With that (presumably) fixed inner race it's not like anything I've seen before. It would probably have to be a split barrel hub to be able to fit the bearings when it was assembled. It's sort of a cross between a Curtiss and a Ham-Stan design, perhaps drawing on the designs of both? It uses a row of roller bearings outboard for thrust and two rows of ball bearings below for blade rotation so it's definitely a VP prop.
The Italians and the French designed and manufactured a few props, I wonder if it's one of theirs?
It looks as though the blade has been re-shaped. Perhaps it has some damage and that was done when the covering etc. was removed.
Anon.
By: - 17th September 2014 at 22:59 Permalink - Edited 1st January 1970 at 01:00
The Rotol R4 adapters look like that, and possibly the R5 as well. I don't have one to measure, but I know someone who does. I'll ask
Pete
By: - 18th September 2014 at 08:36 Permalink - Edited 1st January 1970 at 01:00
I have attached some information regarding Rotol R4 and R5 propellers, and a photo of an R5/3 adaptor for reference. OD of the fat end is 180mm, OD narrow end 160mm, ID of narrow end (bottom end of the wooden blade) 135mm.
DAI
Posts: 1
By: Transfix - 17th September 2014 at 16:25 - Edited 2nd October 2019 at 11:40
Hi Guys,
I have the propeller in the attached pics:
The propeller measures 131cm in height, 28cm across at its widest point while the diameter of the connecting base is 14.5cm.
There does appear to be some faint lettering to the base, the only legible lettering/engraving however is : R.I.A.D.
The propeller blade came from the family of an ex member of the South African Air force who saw action in the Korean war.
More than this I'm afraid i'm at a loss.
Monte chase from www.notplanejane.com suggested the following:
'The propeller blade is not USA made, I believe it is a ROTOL manufacture for a Spitfire or a Hurricane.
The black finish has been removed during restoration. a british ROTUL, possibly off a Spitfire or Hurricane that has has been partially restored and had any metal coating or edging removed.'
If anyone is able to confirm that this is in fact a variable pitch propeller blade from a Spitfire (as used by the South African Air Force), or a Supermarine Spitfire (as apparently used in the early stages of the Korean War), it would be much appreciated!
Kind regards,
Richard
Cape Town
South Africa