Supermarine Speagle - REALLY done!

[The Rat]

Looks right champion! 

[perttime]

As it was an engine test-bed, I'm assuming that this is the original prop fitted before extensive trials showed that a contra-prop was required and was fitted later (Kit's second law applies) 

EXACTLY! 

The backstory mentions the awful torque problems anyway.

And there was no extensive flight testing:

...
As the Eagle engine project never really 'took-off' there was no extensive test flight programme, and what there was took place at Yeovil with the Eagles installed in the few Wyvern TF1s that were built. VA250 carried on in her test role, being fitted at various times with the Trent turbo-prop and even an early Dart engine, but she never lost her 'Speagle' nick-name.

[Rheged]

As it was an engine test-bed, I'm assuming that this is the original prop fitted before extensive trials showed that a contra-prop was required and was fitted later (Kit's second law applies) 

EXACTLY! 

The backstory mentions the awful torque problems anyway.

And there was no extensive flight testing:

...
As the Eagle engine project never really 'took-off' there was no extensive test flight programme, and what there was took place at Yeovil with the Eagles installed in the few Wyvern TF1s that were built. VA250 carried on in her test role, being fitted at various times with the Trent turbo-prop and even an early Dart engine, but she never lost her 'Speagle' nick-name.

OK, modify the backstory to read   "......after  the  initial flight trial......"