I sent you a pm a couple of days ago asking what mark of Gipsy Queen the engine is.
Hi Sigurjon,
I have looked through all my Gemini pics and have been sent some pics of others but none close up enough to see what handles were fitted so if you can help on your return it would be great
Ken
That looks just the job, I have sent you a note about it.
Ken
With aircraft Alloys and the soap trick you still have to quench it in cold water to make it soft, trouble is if you havent heated it quite enough its still hard and a fraction too much and it cracks when you cool it… learned from bitter experience.
Dont mention it to the CAA man he would die.
Ken
Just a thought but are you using aircraft Aluminium as that can crack very easily folding over formers without heat treatment first, plus it can crack using the shrinker and stretcher (especialy stretching and usualy just as you think it need one more tweak). Ordinary Ali for ‘static’ projects are no problem though. I know having scrapped quite a few parts with cracking, it can also crack after heat treatment if you work it too much as it ‘work hardens’. on very complex flanges it has to be heat treated, part folded over, then heat treated again so its soft enough for the final forming.
For those who dont know, heat treating means putting the Ali in a calibrated oven at a temperature of 500 degress for approx 20 minutes depending on thickness, then quenching straight away in cold water, this makes it very soft but warps the panel like mad which can be hard to straighten sometimes. Incidentaly you can only heat treat a part 3 times maximim as after that the properties of the Ali is altered.
Sorry to gop on but just thought I would pass o my tips from experience
Ken
I love those old Pathe News pictures, brilliant.
The Black Magic web site needs updating and we are working on it.
The front fuselage fuel tank covers are all done and just being fitted, I have just finished the work to comlete the tailplane and am working on the elevators now. We have invested in a very large bandsaw and have started to machine up the wood for the wings spars which we plan to start shortly. The engine bearers are done and I am also working on the main undrcarriage assemblies and support frames.
New pictures will appear on the web site shortly and I will post when its there to look at
Ken
Thanks Mark,
I already have the standard English rate of climb indicator, the early one with the full numbers ie; 1.2.3.4. as used on things like Spifires, but as my post said I read in Owen Cathcart-Jones book that he fitted the Pioneer type and i just wondered how they compared. Seems that they made many different types so may never know, all I can say is that it was fitted in 1934.
Owen was the pilot in a record breaking flight to Capetown in a Lockheed Vega in 1931 which is probably where he used the Pioneer type and impressed with it enough to ask for it in the Comet.
Ken
Just found the ‘crows foot ‘ marks under the locking lever. No visible markings and its heavily painted in wrinkle type paint. there is a plate on the side also heavily painted so there may be something under the paint here. this plate has the numbers 533/47 marked on it.
The diameter od the top is 6.1 inches.
Ken
Sorry should have said its the larger type about the same size as the P4
Thanks Anon
I am looking for a pair of instruments and generators thanks
.Ken
Thats great Air Ministry, I have sent you a PM.
Now the question is does anyone have any?
Ken
Thanks for the info, below is the pic of the 6A/450 I have and will swap for a 6A/687 if any one is interested
Ken
Sent you a PM a couple of days ago saying i had a copy of the overhaul manual I could let you have a copy of on CD, did you get it as I havent had a reply
Ken
If we are putting out requests for help I could do with 2 for the Comet as well. I have been looking on e-bay but none seem to pop up.
Ken
i think it may be early 30’s, I have seen similar in light aeroplanes and actualy looks similar to what may have been fited to the DH 88 Comets.
Ken