Hi all,
I recently acquired four old streamline ‘flying wires’ they look to be 1920s/30s vintage, just over 5-1/2 feet long.
Three of the same type these marked L673SSL9 on the end, the other P650SSL9. The 673s 0.65″ wide, the 650 0.85″ wide. Seems that the 673 and 650 relate to the length of the wire in inches measured end to end, leaving out the fork-ends.
The steel fork ends all badly pitted no sign of a part number, HE 1 NG part mark on the head of the clevis pin. Lock nuts look to be copper / brass.
So the question is, are these bog-standard RAF wires, any old biplane, or type specific?
Any info much appreciated.
Cheers, Chumpy.[ATTACH=CONFIG]221440[/ATTACH][ATTACH=CONFIG]221441[/ATTACH][ATTACH=CONFIG]221442[/ATTACH][ATTACH=CONFIG]221443[/ATTACH][ATTACH=CONFIG]221444[/ATTACH]
By: chumpy - 5th October 2013 at 20:17
Hi there Avro, Thanks for your input, interested in the reason for the brass nuts, you live and learn etc. I gave the ‘flat’ fork fitting a bit of a scrape-off.. alas a standard ‘AGS’.. SP7Y part number under the rust.
So they remain all a bit bog-standard..unless someone knows otherwise!?
By: Avro Avian - 2nd October 2013 at 08:25
I can’t help you with the part numbers, but the upper fork end fitting on the right hand photo looks like a manufacturer specific part, where as the lower looks like a standard AGS part.
The brass lock nuts were (are!) standard use with flying wires/tension rods, to prevent any over-tightening from damaging the wire or rod – it would be much more desirable to tear the threads out of the lock nut than set up a latent failure in the wire/rod.
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October 1, 2013 at 8:59 pm