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Post by vultee43 on May 20, 2020 19:01:12 GMT 12
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Post by johnnyfalcon on May 20, 2020 19:37:47 GMT 12
Very cool! Magnificent looking jet!
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Post by shorty on May 20, 2020 21:36:04 GMT 12
Interesting that they have an electric start, I was wondering how they would get on for starter cartridges.
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Post by tbf25o4 on May 21, 2020 12:13:32 GMT 12
I would suspect that converting the engine startup mechanism from cartridge to electric was quite a challenge and probably required some cleverness to accommodate the electric starter in the cramped space of the engine bay. However great move, as Shorty indicates starter cartridges for such venerable aircraft are not easy to come by
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Post by davidd on May 21, 2020 15:17:06 GMT 12
Were the NZ Canberras (B12, T13) fitted from start with electric starters? Cannot remember ever seeing them pouring out smoke like the Venoms used to. Perhaps the cartridge to electric upgrade may have been a welcome official mod at some point in time for earlier Canberras/Avons? David D
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Post by tengahman on May 21, 2020 16:58:15 GMT 12
Throughout the time with the RNZAF both types were cartridge start. The T13 had a single cracker in the front breech. - Different mark Avon from the B(I)12 The B(I)12 had a triple breech starter in the front holding three crackers. Spare cracker cartridges were carried in a mounting rack in the rear fuselage accessible through the camera hatch behind the bomb bay doors. Their was a time delay required before opening the breech in the event of a misfire on the T13. Spent cartridge were eagerly sought by the crashfire boys on loneranger trips to Nandi with the B12's
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Post by shorty on May 21, 2020 19:16:50 GMT 12
Notice also they are using a step, something we never had (or needed). If you wanted decorative cartridges the one from the T 13 was best, you could easily remove the spider whereas the B 12 ones had a ring (like a big washer) which had to be cut out. I have 3 T13 ones which do duty as flower vases If a B12 cartridge was put in a T 13 it would blow the starter apart as the power output was quite different With the three in the the engine nose cone and the six spares in the rear they had the capability for 6 starts
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Post by davidd on May 21, 2020 20:39:59 GMT 12
Thanks for the explanations, I am educated now!
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Post by vultee43 on May 21, 2020 21:22:07 GMT 12
I would suspect that converting the engine startup mechanism from cartridge to electric was quite a challenge and probably required some cleverness to accommodate the electric starter in the cramped space of the engine bay. However great move, as Shorty indicates starter cartridges for such venerable aircraft are not easy to come by I may be wrong but I believe the electric starter is located in the bomb bay. It did apparently take a fair bit of engineering but much more practical than starter cartridges in the long term.
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Post by colford on Jun 29, 2021 18:18:49 GMT 12
AND, just so that people are aware, the Temora Aviation Museum/RAAF No.100 Squadron Canberra had its long awaited and highly anticipated first flight yesterday. The Temora Flyers Inc posted on their FB page photos and a couple of short videos of the return to flight of the Canberra. Vampire is apparently not far off its first flight as well and the Meteor should be back from its servicing cycle in time for the October 2021 showcase at TAM. Good to see the Canberra back in the air again and I for one am lookng forward to seeing it participating in future airshows and flying days. www.facebook.com/TemoraFlyersInc/
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Post by colford on Jun 30, 2021 18:16:35 GMT 12
Temora Aviation Museum have now put up a short video about the return to flight of their Canberra on their FB page. 1st flight honours went the Darren 'Buster' Crabbe, followed by Mark Binskin who got his first flight and type endorsement on the type on subsequent test flights. Currently its first planned public flight display will be at the October 2021 Aircraft Showcase.
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Post by Mustang51 on Jun 30, 2021 18:46:35 GMT 12
Binny has gone to the Dark Side............
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catcrew
Flight Lieutenant
Posts: 72
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Post by catcrew on Jul 2, 2021 19:16:48 GMT 12
Binny has gone to the Dark Side............ Back to the dark side
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Post by oj on Jul 4, 2021 10:52:38 GMT 12
It would be completely impractical to have an electric starter in the bomb bay. The most likely explanation is that they have installed a more modern starter/generator on the existing engine generator pad. Or, maybe fitted a modern high-speed electric starter within the breech housing to replace the cordite-driven turbine.
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Post by l29 on Jul 4, 2021 16:56:54 GMT 12
The electric start conversion....
they used an existing Hunter Conversion that was done in Canada and adapted it to the Canberra. It's based on Rotax electric starter off a Comet 4 which directly fits the Avon engine starter mounting flange. The bomb bay carries the batteries required for starting. It gives a smoother more consistent start.
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