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Flying High

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June 15, 2007 at 7:37 pm in reply to: What are Warbird safety height limits these days? #1273359

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What are warbird safety height limits these days?

See I knew somebody would have some stories to tell, any more I wonder?

But, in all seriousness, what are the dangers involved today with these brilliantly restored machines, if they were allowed to fly that high?Is there an increased fire risk at height with oxygen? Apart from the time factor, does the risk increase dramatically say from 25,000ft up to over 40,000ft?

During the war there were stories of planes suddenly dropping from these heights,with pilots falling unconscious, due to they supposed oxygen running out, and or freezing and fracturing of essential pipes. Sometimes pilots managed to wake up with just a few thousand feet spare, but sadly apparently many didn’t.

Any one know any more?

June 13, 2007 at 3:12 pm in reply to: What are Warbird safety height limits these days? #1275792

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What are Warbird safety height limits these days?

Thanks guys for your input, would anybody else like to add to the knowledge?Anytime? Particularly does anyone know when oxygen was last used at altitude in prop driven fighters, especially over the Uk?
Thanks again, FH.

April 6, 2007 at 8:58 pm in reply to: Help-Spitfire Spinner Dimensions-pix? #1252871

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Spitfire Spinners

Hi Darrell, Yes, it is an interest of mine. I have some useful info – codes, sizes and pictures,but as yet have not got round to compiling it all together. You probably know that because of the range of Spitfires there is also a variety of sizes of spinners too, most, but not all, with ‘Rotol’ specs and code numbers.
If you are prepared to wait a bit, might be able to help you out. Is this general knowledge you seek or a specific project ? Any more you can tell me, might be of use when compiling.
I think my e-mail address is listed. If not let me know when you post a reply.

March 29, 2007 at 8:01 pm in reply to: Spitfire flying hours #1258891

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Grace Spitfire hours

Had a conversation with Carolyn grace last year, in which I think she said her spitfire was limited to a max of 50 hours and this was connected with the plane’s insurance policy. If that helps.
She also said it takes her over 40 hrs of paperwork each week to keep it in the air, every week outside of the display times, something which is worth knowing and appreciating.

September 18, 2006 at 8:47 pm in reply to: R.A.F FRISTON. An ariel view, but Info wanted. #1288502

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This is brilliant stuff, thanks to you all. FH.

September 14, 2006 at 8:56 pm in reply to: R.A.F FRISTON. An ariel view, but Info wanted. #1293956

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Many thanks to you both for replying,its great to be able to find the right book, but 1500 living in tents. I’ve seen some of the winter storms coming over those cliffs, it can be fun! FH.

May 18, 2006 at 7:31 pm in reply to: Help required – Spitfire prop blade? #1279532

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Hi Tony, better late than never in seeing your photo. My records show that the blade is made by Rotol Airscrews, based at Staverton Airport, Cheltenham. Glos. The drawing number RA (Rotol airscrews) 10046 was made for several Supermarine Spitfires including Mk V11,V111,1X. The red identity disc looks as if it shows 4 blade numbers, ie. 4 blade prop with either the Merlin 61,63,64 engines.My guess would be that this particular blade would be off the Mk 1X. The ‘RS’ according to Bruce Stait’s book (see no 12 in this thread) shows it’s made of Rotol wood – ‘Hydulignum’ probably, with Rotoloid covering, and a simple sheath.
There should be three sets of numbers stamped on the wooden blade root base which usually reads from top to bottom as follows –
Block number, drawing number, serial number.
Hope this helps, if I can be of more assistance, feel free to get in touch.

January 13, 2006 at 7:05 pm in reply to: Help required – Spitfire prop blade? #1339618

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Hi there, I am a new member of this forum, but as a spitfire enthusiast have recently been studying wooden propeller blades especially those made by Rotol (Rotol Airscrews) during WW2. I have no doubt your blade is a Rotol, and was first fitted to the Seafire Mk XV. This can be easily identified by the numbers you stated, and much can be gleaned from one book which I can recommend called :-
‘Rotol’ The history of an Air Screw company. By Bruce Stait.
published 1990. ISBN 0 9516815 0 8. Try one of the used online booksearch companies. The book is priced around £15 second hand, and is full of production details including some pictures of manufacturing processes,together with diagrams explaining the numbers on the side and underneath of each blade.Also included is an explanation of the tech terms used together with the weatherproofing methods and their names etc.
As a collector myself, have managed to discover quite a lot more, so please feel free to get in touch.
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