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jamesinnewcastl
Rank 5 Registered User
Last Activity: 11th September 2018, 19:12
Joined: 20th November 2010
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  • jamesinnewcastl
    replied to Radio tuner parts ID
    Hi The only documentation that I have is AP 2534B Vol 1 Ch 5 dated 1948. Attached is a dated RAF memo which mentions the control unit in June 1944. The SBA system was used in many bombers - not sure about fighters but as the Pilot would have controlled the unit you have it might be best to look at cockpit pics of aircraft of interest. Cheers ...
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  • jamesinnewcastl
    replied to Radio tuner parts ID
    Hi The first one is a Standard Beam Approach control unit - see attached. Looks like they have used the fully variable Seafire tuner dial to replace the clunky switch based Bowden cable of the original control box. Hmmm, what an accurate drawing, even the fixing bolts are dangling out the same way that yours are! Cheers James...
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    Last edited by jamesinnewcastl; 26th August 2018, 16:43.

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  • Hi Ross That's very interesting! It's made me change my mind several times with various possibilities. I've consulted the AP however and even though the spiral winding (10 teeth per inch) is described clearly, it is also clear that the cable is used in an push pull arrangement, the extra tubing sticking out of the control accomodataing the cable as it moves b...
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  • jamesinnewcastl
    replied to A1134 amplifier mounting
    Hi Andy I have read that batteries were charged every mission - probably in the notes of a W/O operator. If I were a W/O I would do it every mission too! BUt you would imagine that there would have been banks of them on charge waiting to be used. Actually I've remembered now that the glass accumulator batteries on the Stirling are behind the radio 's...
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  • Hi John I had assumed that such cables were obsolete but a quick 'ebay' and there they are! I'll check the pitch of cables vs. cogs to see if they are still available in the right size, not a problem on the controller end as I can adjust the pitch to suit - but the radio end would have to be right. Interestingly they look to be spiral? I'd assumed that they...
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  • jamesinnewcastl
    replied to A1134 amplifier mounting
    Hi Andy

    I believe that there is battery inside the anplifier, but I guess you would know that. On the Stirling other 'electronic' function batteries are on the floor opposite the W/O. I have a nice pic of a W/O in the doorway clutching some batteries, presumably for recharging.


    Cheers
    James
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  • Hi All I'm busy with the 3D model (finally and sporadically) - basically the control knob was driving me nuts but I have tamed the beast now. For my model it only had to 'look nice' while still being capable of animation. But in trying to make the item 'printable' and actually useable, I've realised that it is drastically wrong in many places. So I've been busy making it int...
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  • jamesinnewcastl
    replied to A1134 amplifier mounting
    Hi

    Any chance that you might put up a drawing of the mounting method or just a text desciption please?

    John - I assume that you have a bath-tub morse key? If not I have one that you can have.


    Cheers
    James
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