There is a list of Mod Numbers in ‘The Lancaster Manual’ published by the RAFM (basically AP2062A & AP2026C) that goes from 397 to 805 (approved up to 31st January 1943) but none of the mods you listed are included.

There are gaps; for example 434 and 436 are there but nothing is listed for 435.

Sorry can’t help other than that; where did you get these mod numbers from?

I don’t have a copy to hand but aren’t there lists of ‘evaders’ in the back of the ‘Bomber Command Losses’ books?

Actually a Wright R-1820 makes much more sense…..I don’t know why I thought it was from a Pratt & Whitney R-2800; only that ‘looks’ bigger than a Pratt & Whitney R-1830, which I’m fairly sure it isn’t from, as I said US engines aren’t really my thing! 😮

I’ve got a Wright R-3350 piston that looks similar (which would make sense as the R-3350 was based on a double-row R-1820). I’ll see if I can post a photograph later.

…trying to decide which engine a piston, that was in this display, was from?

I don’t suppose you took a picture of the piston did you?

…the design…..would preclude the movement of most of the airframes held within it, whatever their size…

Getting the airframes in-and-out would be one of my main concerns with this design, as I argued previously; the current Battle-of-Britain Hall is much more accessible and most airframes in there haven’t moved in decades. It occurs to me that the only realistic option would be to build the Beacon around them, that could be risky for a number of reasons.

The other thing that occurs to me is the actual amount of ground space left at the RAFM Hendon site; you just cannot build such a huge structure within its own floor-plan. How is the necessary site space around the Beacon to be found during the build, close the museum for five years?

There is an interesting cross-section of the proposal here:

http://www.battleofbritainbeacon.org/the-beacon/beacon-4.cfm

Failings? Guy Gibson was twenty-four years old when he commanded 617 Squadron and he was undoubtedly under enormous pressure for Operation Chastise to succeed as well as being responsible for the lives of every one of the crews under him…

…that would make me a tad ‘acerbic’ if I’d had the strength of character to shoulder that responsibility at that age (which I didn’t).

You should employ what I call Creaking Door’s Angle Grinder Rule!

If I bump into something, then I should be more careful…

…if I bump into it again, then it should be more careful…

…if I bump into it once more, I take my angle-grinder to it…..whatever it is! :diablo:

All I need now is a rule to stop me falling off all my three-legged furniture! :rolleyes: