Looks like a nice Harrier GR7 (or other MK) throttle box…

http://www.airliners.net/open.file?id=0501927&size=L&width=671&height=1036&sok=JURER%20%20%28ZNGPU%20%28nvepensg%2Cnveyvar%2Ccynpr%2Ccubgb_qngr%2Cpbhagel%2Cerznex%2Ccubgbtencure%2Crznvy%2Clrne%2Cert%2Cnvepensg_trarevp%2Cpa%2Cpbqr%29%20NTNVAFG%20%28%27%2B%22uneevre%22%27%20VA%20OBBYRNA%20ZBQR%29%29%20NAQ%20%28SVAQ_VA_FRG%28%27PBPXCVG%27%2C%20fcrpvny%29%3E0%29%20%20BEQRE%20OL%20cubgb_vq%20QRFP&photo_nr=4

Cheers,

Olivier

It could also have been a Coastal Command Halifax…!

(It appears to be Merlin engined, if I read the boost gauge ranges correctly).

http://www.ovomalley.com/462_squadron_photo_album.php

Yes it could be … as well as Mr COOMBS could be wrong…

Olivier

Olivier,

We must have different Pilot’s Notes?

My copy, for the ASR 1, clearly shows an ASI calibrated in m.p.h. The text quotes m.p.h. with corresponding knots shown in brackets.

I have Provisional Notes for the GR 5. This does not have any photos, but the text refers to knots exclusively.

So I think you have a situation where the bomber versions would have had ASIs in m.p.h., but those later adapted for use with Coastal Command would have had ASIs reading in knots (same happened to the Whitley, Hampden, Beaufighter, etc).

My reason for mentioning the Warwick was to remind us that this aircraft was under development in the same time period as Graham’s 1939 ASI was manufactured. At this point, the aircraft was a heavy bomber. The prototype was flying in 1939.

Hence, another candidate to explain Graham’s early dated 480 m.p.h. ASI.

Yes indeed,;) I have a Warwick II & V Pilot’s notes copy, and I’m pretty sure that if once ever fitted (?) operationnally the 480MPH gauge didn’t last long.(first production Warwick to fly, May 1942 / 1st delivered ASR.I August 1943)
Coastal command ( but also some Bomber Command long range A/C used Knots even if they started with MPH ) for obvious navigational purpose.
I totally agree with you about the Whitley, Hampden, Beaufighter and the MPH gauge and as I previouly wrote the 480 MPH fits Beaufighter.

Cheers

Olivier

P.S.
Now, I think we really don’t have anything else to do to discuss endlessly about such subject (I’m part of it:D ) but in 1940 the USAAC had simple answer to simple ptoblem (question). The scan are from a 1940 technical manual, in the US to they owned high airspeed indicator, those indicators recorded 20MPH higher than the highest A.M. indicator (480MPH) at that time… and from 1942 (at least) they started to built 0-700 MPH gauges and that was only 61 miles from the barrier :dev2:

I agree with that but you must not have an airspeed that reads higher than the structural limits of the airframe and so groups of aircraft used groups of ASI’s. What aircraft could keep their wings on in a dive at 480 MPH in 40 or 41?.
For your theory to hold water you must find an operational aircraft ( at least one squadron), before 1942 that can safely dive at up to 480.

Why the 700 MPH USAAF gauge so ?

Did they get slower? why were early models fitted with 480’s and then post war fitted with 400Knts, which is about 420MPH ?

Because the 400Knts does simply not exist, it is a 420Knts gauge.

Cheers,
Olivier

Incidentally, going back to the Mossie.

The prototype did exceed 400 mph in level flight at a later point in its career, with different engines. I dont have my notes with me, but will check them. I feel sure that the VNE of the early Mosquito (including the prototype) would have been higher than 400 mph. Anyone know?

Bruce

Not to forget the dive speed, the level speed isn’t the only important speed to be record.

Cheers,

Olivier

They’re better than P-51Ds. 😉 .

700 MPH A.S.I. 😮 Oh my god;)

Olivier

Nice picture’s i cannot make out the ASI is it 400 or 480?

I Graham,
It was 400 MPH and I forgot to say that it was from an Air Ministry instructional movie. (Crown copyright)

Cheers,

Olivier

My research goes that Mk I and II had the +8, Mk V and IX the +16 and Mk XIV onwards +20 to 24.
Regards,
Herbert

The -8 to +20 lbs (6A/1427) was also fitted to the Mk.VIII. (Source RAAF)
Cheers,

Olivier