I have a drawing for the instrument panel (30034-123) which I think is for a late Mk 1.
It shows the cutout for the brake gauge and mentions holes “drilled to suit air pressure gauge AHO374”.
Can anyone confirm whether early Spitfires used this type of brake gauge rather than the AHO 4040 which is usually quoted as being the Spitfire type?
I have seen reference to the AHO 4040 in a Spitfire MkI/II parts catalogue, but wonder if the AHO 374 (same as the one used in the Whitley) was used in the Battle of Britain period.
Anyone got the remains of one from a Battle of Britain Spitfire?
Alternatively I could just go down to Hawkinge and have a look at some of their displays, but hopefully someone here will know.
By: Versuch - 26th August 2012 at 09:29
Ok as promised,I suspect it is a late Mk1,as it has been riveted,
and not engraved….Why have they highlighted 300 psi?
The MK1 pilots notes do not mention the pressure gauge capacity.
Thanks for asking after the Demon panel,its coming along,and happily
I have found a very kind person who has a new build panel to spec,
and the deal is nearly done!
But if anyone has details of the various data plates on a Demon panel….
I love to hear from you.
Kind Regards Mike
By: Whitley_Project - 25th August 2012 at 19:01
That’s news to me Mike. Any chance you can post the pic? Also, any chance of a pic of your Hawker biplane panel you were putting together?
By: Versuch - 25th August 2012 at 05:40
Just to add to the confusion…there is a well known photo of
a Mk1 panel,that has an alloy tab riveted at the 2 oclock position,
that has “300 “and an arrow pointing at the gauge!
Was this a common fitting?
Cheers Mike
By: TonyT - 23rd August 2012 at 19:40
We were trying to find the mod, Rich thought it was to do with the Wheel size mod, but it didn’t appear to show it, but he said the later higher pressure one wasn’t in the Mk 1
By: Whitley_Project - 23rd August 2012 at 19:34
Thanks Tony – as usual 🙂
That’s my theory. No one here seems to know so I might head off to Hawkinge this weekend to take a look.
By: TonyT - 23rd August 2012 at 13:04
AHO 4040 was the higher pressure one (120 psi per side) used in the likes of the 14, they were not we believe on the MK 1, the earlier pressures were around 80- 90 psi
By: Whitley_Project - 21st August 2012 at 10:52
Hi Tony – no this is a different query… Thanks a lot for your help with info on spacers.
By: TonyT - 21st August 2012 at 10:25
Is that what the query is over spacers? Check pms.. There were to different thicknesses of lips on the guage, the thicker one was spaced to allow clearance from the throttle and as far as I know both were used, will ask.
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August 21, 2012 at 10:19 am