beermat
Leading Aircraftman
Posts: 2
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Post by beermat on Apr 19, 2018 3:54:17 GMT 12
Hi all I am new here - and I am not sure I am posting in the right way. I have the holy grail, if anyone is interested - a rough but consistent De Havilland / Ham Stand blade cross-reference that I put together myself after years of research. Over here in the UK no-one seems to have noticed, but maybe someone in NZ might pick up on it? Happy to post it if there's any interest at all.
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Post by suthg on Apr 19, 2018 14:28:54 GMT 12
Yes, our project for a Typhoon rebuild in Canada would like it to compare data we already have. I will PM you. I do recognise your Beermat name from Key Publishing!!
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Post by nuuumannn on Apr 19, 2018 16:55:21 GMT 12
Yes, please do, Beermat; useful information that I'm sure the hard work you've put into researching will pay off with general access.
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Post by noooby on Apr 20, 2018 8:34:03 GMT 12
beermat! Welcome to this forum.
Cheers Graham.A
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Post by aircraftclocks on Apr 21, 2018 1:36:53 GMT 12
Beermat You will like this forum, there are quite a few names you will recognise from other forums, mine for example. Keep in touch, planning to get some prop data out of the NAA in Melbourne in the next couple of months. Never know what you will find. Found some French propeller drawings the other day, but I doubt they will be of interest to you.
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beermat
Leading Aircraftman
Posts: 2
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Post by beermat on Jun 4, 2018 8:06:54 GMT 12
Hi!
Thanks for the welcome - strange in a way to see so many familiar names here!
I want to attach a drawing numbers table, with US equivalents, as an image but I am not sure how to - can anyone help?
Thanks,
Matt
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Post by noooby on Jun 5, 2018 1:42:03 GMT 12
I believe you would need to upload it to a file sharing site and then post a link to it. I don't think you can attach files directly to your post.
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Post by nuuumannn on Jun 5, 2018 17:54:53 GMT 12
Out of interest, this is a cutaway at the Air Force Museum of NZ of a DH 23EX prop, which is identical internally to the 23E50. The piston in the hub is clearly visible, as is the moving cam, which actuates in a fixed cam. 23EXThere's a description of how it works on the original page.
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Post by suthg on Jun 5, 2018 22:28:29 GMT 12
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Post by davidd on Jun 7, 2018 10:10:40 GMT 12
It is my understanding that all British manufactured 23E50 Hydromatics were actually assembled in the UK from entirely American-manufactured parts, with probably the only British part being the prop shaft sleeve required to match the (inner) British splines with the (outer) American spline. Do I have this right? All comments welcome. Dave D
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Post by noooby on Jun 8, 2018 4:34:49 GMT 12
Not quite. I have a Typhoon prop hub in my garage and while some parts (the dome for instance) carry a Ham Std number (which I can't find in ANY Ham Std book), most of it has DH numbers only and all parts have DH quality stamps. Mind you, it isn't a 23E50, it is a DH licence built 33E60. I doubt Ham Std would have been able to keep up with manfacturing of the 23E50 series themselves. So many aircraft used them in WWII. Everything from certain Mk.V Spitfires to Corsairs, C-47's to Catalinas, B-25's, F6F's. You get the idea
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Post by aircraftclocks on Jun 8, 2018 11:58:41 GMT 12
Hamilton Standard Propeller blades were made under license by Frigidaire, Nash Kelvinator, and Remington Rand.
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