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7 cylinder man

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  • in reply to: Blue Prints/ Production Drawings #1251174
    7 cylinder man
    Participant

    Mark V

    Perhaps you need to get out of London more? I am stating what I have found – I’m not making it up, why would I?

    End

    in reply to: Blue Prints/ Production Drawings #1251702
    7 cylinder man
    Participant

    To reply to the comments

    Fouga23:
    200 dpi was more than enough for the Swift and Pobjoy drawings. The professionals tell me it was enough and I am very pleased with the results. More dpi = larger file size.

    Papa Lima
    The price with the local Prontaprint that I have used was open to some bargaining. Another quote to copy drawings to disc (250 Swift drawings) was over £500 – 5 years ago! The cost to scan 40 Pobjoy drawings (A0 size) to disc was under £80. Normally a ‘set-up’ charge will make small numbers to copy more expensive than one copy/print.

    Mark V
    The equipment used to scan A0/A1/A2 drawings is the same used to copy for printing. All the small town Prontaprint places I have used were equipped for scanning to disc. The scan to disc option is, I think, better. Rather than take a large number of drawing to copy/print, the printer just prints from disc – and it is cheaper! Go compare the costs to scan an A0 drawing and print it against the print from file; less time = money saved. Also, drawings can and do get lost when taken to the printers for copying. Over the years a number of Swift drawing went this…I only fould this out when the originals were found and compared to the Kodatrace copies made in the 1960s.

    CSheppardholediry
    Very valid comments. Fragile document should be placed in a plastic cover before being put through the scanning process.

    in reply to: Blue Prints/ Production Drawings #1252510
    7 cylinder man
    Participant

    I have copied many old drawings over the past few years – Swift, Pobjoy etc. Take them to the likes of Prontaprint and ask that they copy at 200 dpi or better and have then saved in TIFF format. They can then be changed to PDF or any other file type you please and copied without damaged to the originals.

    When you have done this I suggest leaving the originals with the RAF Museum or the RAeS Library for safe keeping.

    Copyright in UK … basically 70 years. Any CD you produce will also be copyrighted to you.

    in reply to: British Sleeve Valve Engines #1281284
    7 cylinder man
    Participant

    as for sleeve valves, typical British over engineering

    Sleeve valve engine invented by the Americans. Made to work through simplification by our own Harry Ricardo here in the UK. Mastered by Roy Fedden who found a way to make the parts for production and interchangeability.

    As has been pointed out the sleeve valve engine has less moving parts than a poppet valved one.

    in reply to: Princess flying boat #1334782
    7 cylinder man
    Participant

    Shame on you all :p

    http://www.saroapprentices.co.uk/links.html

    also

    http://www.saundersroearchives.com/ (although this link was not working when I last tried it)

    Re Dick Stratton; A great man who gives a first class lecture. He taught many of us in the RAFGSA ‘practical engineering’ . 🙂

    in reply to: What aircraft? #1334231
    7 cylinder man
    Participant

    Herman

    Many thanks for your reply. A short history (or where to find) of the company that built it, how many (3?), specfication (as can be found in “Janes”, are there any left, was there any link with Pobjoy other than the engine type being fitted.

    Regards
    Paul

    in reply to: What aircraft? #1335531
    7 cylinder man
    Participant

    Herman, yes it is PH-AIU.

    Thanks – a mystery nearly solved.

    in reply to: What aircraft? #1335648
    7 cylinder man
    Participant

    Thanks guys. Your quite right that the engine is a Pobjoy and an “R” type at that. I found the picture lurking in a Pobjoy brouchure from 1932. described as

    “The Pobjoy Panda – a side by side cabin machine of excellent all-round performance, which cruises at 25 mpg. It is provided with hand starting from the cabin, and resembles a flying motor car.”

    Other types shown are the Pobjoy Klemm, Comper Swift, Miles Satyr and the Monospar.

    Anyone any more thoughts on the type in the picture? Perhaps Douglas Pobjoy intended importing the Plymouth?

Viewing 8 posts - 1 through 8 (of 8 total)