Just to update everyone that’s tried to help us- the mystery diagram I kept referring to WAS the Hunting H.126, the spare starting gear from which Donald Campbell acquired in March 1966. We’re now talking to Cosford re. the H.126.

Disregarding the hunt for the strangely-laid out aircraft for a minute, we’re now wondering if we have a start system from a Boeing 707…a long time ago, we were told that our start bottles were fire bottles from the Seven Oh; this turned out to be incvorrect, but we never thought to look at the start system on it too, but it’s the right production era and we’re told that it had an air start system provided by Lucas Rotax- just what we’re after.

So you know what’s coming now…can anyone provide drawings/piccies of a 707’s air start system please?

Thanks!

Blast! Well, thanks for trying anyway.

Found the interpretational one in Flight Global, but I need something more detailed though- a proper cutaway- anyone?

That would make some sense, getting a trolley acc out to an SR.A/1 would have been a nightmare!:D

A Flight report mentions that the SARO used electric start from internal accumulators.

I note that it says extra accumulators are carried ‘when electric starting is used’, implying to me that there was an alternative set up perhaps when electric starting wasn’t used..?

Anyway it’s maddening, as we have a basic diagram of our air start system seemingly within an aircraft, a type we don’t recognise. The layout was strange- single pilot sat virtually on top of his engine- and the SR.A1 seems to fit that layout well, and was also as it happens a type previously raided by Campbell for parts. But, did it ever have an air start system..?

That would be that idea stuffed, then. Hmm…