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Post by htbrst on Dec 13, 2012 18:27:31 GMT 12
This Ripon in Finland gives a good idea of what to expect: www.virtualpilots.fi/feature/photoreports/ripon/Since the Baffin is essentially a re-engined Ripon, that aircract should at least be able to provide a good starting point for measurements and what bits and bobs go where |
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Post by Dave Homewood on Dec 13, 2012 18:31:52 GMT 12
S1674 started life as a Ripon, so you're right.
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Post by shamus on Dec 13, 2012 18:42:08 GMT 12
Except one vital difference. The Finnish Ripon was a special model to be made in Finland and is different to the British Ripons in that the rear fuselage was plywood and not fabric.
Essential dimensions can be obtained from it but we don't know just how much the difference is.
Only time will tell, but i think a trip to Finland is essential.
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Post by Dave Homewood on Dec 13, 2012 18:56:02 GMT 12
I didn't realise that Jim, thanks.
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Post by ngatimozart on Dec 13, 2012 20:30:43 GMT 12
There is a way of measuring using photographs. What is needed in each photo is something that is of a known dimension such as a ruler scale and the focal length of the lens. In geography we call it photo rectification but it is accurate if done right. If you run it through a program like AutoCad you would then get correctly scaled and dimensioned drawings for each part, section etc. Beauty about it is that you would only need to visit the aircraft once. Today you can print 3D copies of parts so basically if needed could make blanks of parts prior to manufacture or rebuild. I am not an engineer but I think on criticial parts where they have to be manufactured from scratch that 3D printing may be an option, albeit expensive, before committing to manufacture.
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Post by Dave Homewood on Dec 13, 2012 20:49:38 GMT 12
But where will you get details of the focal point of a lens from a photo taken 70+ years ago?
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Post by aircraftclocks on Dec 14, 2012 3:19:05 GMT 12
I know where a copy of the Vol 1 is if the team do not already have it
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Post by Andy Wright on Dec 14, 2012 8:33:04 GMT 12
This Ripon in Finland gives a good idea of what to expect: www.virtualpilots.fi/feature/photoreports/ripon/Since the Baffin is essentially a re-engined Ripon, that aircract should at least be able to provide a good starting point for measurements and what bits and bobs go where Look at the lovely sizr of that sod! Man, I love big biplanes! |
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Post by Andy Wright on Dec 14, 2012 8:36:21 GMT 12
So you're suggesting a Blackburn Baffin Supporters Group? The "Baffin Boffins" As a long dedicated fan of the Baffin I think this is a great idea to both support the project with raising funds or finding parts, and also get the story of the Baffin's rather important service career out there LOL, I had thought of Baffin Boffins but reckoned it implied we were all smart arses... :-D Anymore for anymore? |
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Post by Dave Homewood on Dec 14, 2012 8:50:55 GMT 12
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Post by shamus on Dec 14, 2012 9:55:31 GMT 12
aircraftclocks. Very interested to hear you have the manual Vol. 1 you mentioned. Does it have an
AP number. As we have no manuals and very little technical data, anything is extremely valuable for this restoration.
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Post by aircraftclocks on Dec 14, 2012 13:00:55 GMT 12
Baffin Aeroplane
Pegasus I.M.3 Engine
1st Edition 1934
AP1483 Vol. I
I do not have the book, but I do know where it is available.
PM me and I will advise.
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Post by pjw4118 on Dec 14, 2012 14:44:35 GMT 12
Dave , do you want to use this as a Baffin File, so photos and data can be logged in one spot.Maybe a rename is in order
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Post by ngatimozart on Dec 14, 2012 15:33:33 GMT 12
But where will you get details of the focal point of a lens from a photo taken 70+ years ago? I'm not meaning old photos. I was talking about photographing the Ripon in Finland. From what I understand it is an extant example so if one is able to photograph parts etc., that no drawings exist for, then one can obtain detailed data from the image. |
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setter1
Flight Lieutenant
Posts: 85
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Post by setter1 on Dec 15, 2012 16:54:29 GMT 12
This is a great project and very worthwhile - I imagine a lot of "bits" will come to light as work progresses
John
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davem2
Flight Lieutenant
Posts: 98
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Post by davem2 on Dec 16, 2012 16:42:50 GMT 12
Shamus-check your PM
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Post by shamus on Dec 16, 2012 17:08:38 GMT 12
davem2. Checked PMs and no message from you. Had some trouble with the messages after the Forum meltdown and they did not reappear until the next day. Try again.
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Post by shamus on Dec 16, 2012 17:17:08 GMT 12
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Post by Richard Wesley on Dec 16, 2012 19:47:23 GMT 12
Good to see more photos. How does the structure compare with a Hind, are they similar, or is the Baffin more straight forward in terms of the way the steel tubing is linked at the joints?
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Post by shamus on Dec 16, 2012 22:41:32 GMT 12
Hi Richard. The structure of the Baffin is quite different to the Hind. Whereas the Hind has all metal tubing for the airframe, the Baffin has composite wood/metal construction. At the last joint shown in the latest photos the wooden longerons attach and continue for the rest of the airframe.
This aircraft occupies a special place in the hierarchy as it is the link between the old wooden frame aeroplanes and the newer all metal ones. The wings also have spruce spars but the cross tubes are metal, again showing the transition.
I will scan some diagrams and post them showing the airframe soon.
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