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smirky

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Viewing 15 posts - 391 through 405 (of 748 total)
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  • in reply to: Photos of Vulcans on the Catterick fire dump? #911676
    smirky
    Member

    That would have been the nose wheel steering bypass pin.

    Aha that makes sense, thanks!

    in reply to: Photos of Vulcans on the Catterick fire dump? #912905
    smirky
    Member

    Thanks and sorry for the lurch off-topic.

    Back to the Vulcans on the fire dump ….

    in reply to: Photos of Vulcans on the Catterick fire dump? #913256
    smirky
    Member

    It shouldn’t smirky, you have weight on micro switches on the gear that in effect isolate various systems whilst on the ground, one being the retraction system. You can find details of the incident and a lucky escape for one of the see off crew.

    That is amazing and lucky no one was killed. (I now remember seeing the ground locks in place when under the Vulcan at Newark!)

    Is it a common design practice for it to be geometrically possible to retract the gear with weight on it, instead relying on microswitches etc.as a safety system?

    Last time at an airport I saw the ground crew install something in the nose wheel bay attached to a big red streamer which they removed and showed to the pilot before pushing back – would this have been a safety pin on the nose gear?

    in reply to: Photos of Vulcans on the Catterick fire dump? #913419
    smirky
    Member

    Why is it even possible to retract the gear with weight on it?

    Is this common design practice? – I would have expected something to go over-centre and lock it in place

    smirky
    Member

    Wessex HAS1 XP158

    This is my new project, looking well-used after at least 5 years outside but has the dataplate which identifies it as WA91 and therefore XP158 :cool:. An early (single engined) Wessex that was never converted to HAS3 standard but instead retired to the SAR role.

    As far as I can discover, XP158 was delivered in 1963, displayed in yellow/blue with torpedoes in 1968 marked as 72, retasked to SAR visited Malta with Ark Royal 1974 marked 047 then to Culdrose marked 522, took part in the Silver Jubilee fleet review 1977 and retired to static duties in 1979. Apart from that I have no idea – is there a way of finding out if it was embarked on Centaur, Hermes etc.? Also it appears that there was another 047 on Ark Royal in the 1970s so I am a bit confused.

    The centre backlit panel is missing as are the eyebrow lights on the left and right ends.

    The tattier dials are original. I have done a bit of hole-stuffing so some of the dials are not exactly right at the moment, but I don’t see this ever reaching showroom condition.:D

    in reply to: Goodwin Sands Dornier progress thread #916137
    smirky
    Member

    I’m new to this but I know a grade A balls-up when I see one.

    Looking at the pictures, they had a purpose made cage available, what caused them to try the marionette technique?

    Also the cage looks like it would have fed in point loads where the thin beams bear on the structure. Wouldn’t it have been preferable to move the thing onto a flooded lifting pontoon with sand bags before breaking the surface?

    in reply to: Lancaster Cockpit Lamp Restoration #916490
    smirky
    Member

    Cool, is it part of a larger project – any chance of a picture?

    in reply to: Lancaster Cockpit Lamp Restoration #920261
    smirky
    Member

    Trying to restore one of these rather than just buying another one – you are a man after my own heart 🙂

    Just had a look and it appears to be a red coloured perspex cylinder relatively thick. This might be hard to find but you can get thin sheets of red stuff for stage lighting ‘ gels’ which might roll up to good effect.

    in reply to: What are these? #923461
    smirky
    Member

    They look nicely made, could they be for harmonising the guns?

    http://www.ebay.co.uk/itm/141212112910

    Wouldn’t normally take them with you but the Swiss probably operated in a more dispersed way.

    in reply to: Lancaster bomb sight #925403
    smirky
    Member

    Hello i have made a few bombsights to scale would you like a picture.

    YES, we love pictures. Will it look like the one in post#3?

    in reply to: Merlin(?) Engine Mount frame data plate- help needed #926493
    smirky
    Member

    FM=Fairey …..

    in reply to: 3D CAD- RAF Browning .303 #928485
    smirky
    Member

    I take it you mean theoretically – I wouldn’t recommend it!

    smirky
    Member

    The 2 BA csk screws are one inch and the spacers are half inch (8 required) – based on experiment. 🙂

    2 BA brass screws went into the prevailing torque nuts on my AH & DI without apparent damage.

    smirky
    Member

    and having measured an actual Mk9 ASI instrument.

    Can’t agree with your measurements so I did a bit more research …

    from AP1275 Vol I 1937: the pcd for the fixings is given as 4.125″ (=104.8mm), dividing by root2 gives the square dimension as 74.1mm (2.917″)- not a round number of inches but no reason why it should be.

    Measuring an actual instrument (MkIXE* dated 1942 with non-ribbed outer bezel) with an electronic vernier…
    measured rear case diameter 85.75mm – this is a shade over the nominal 3.375 given in AP1275
    measured front bezel diameter 92.4mm. This is close to EB’s 3 41/64″(=92.47) so perhaps the inch dimension for the hole should be 3 21/32″(=92.9mm)

    smirky
    Member

    I did wonder about that. As Smirky pointed out, it needs spacers. However my wartime book *does* actually give a panel cut-out hole including the corner missing for the zeroing mechanism to sit in.

    I did say that but then looked at the actual panel and corrected it as the VSI is in fact flush to the rear of the panel. The older ones have a knob rather than the grub screw so that would need a cutout.

Viewing 15 posts - 391 through 405 (of 748 total)