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Looking at US types of the period the Dauntless was fitted with a Cyclone and a counterweight prop for reference; Modeling Hamilton Standard Counterweight Propeller
True and I see what you mean about the length of the cylinders. Looking at the Pegasus as other people have mentioned, with the front cover corroded away the push rods would also fall away, what are your thoughts?
The propeller in the above image has the wrong rotation compared to original pictures. If you compare the location of the large weight slug on the counterweight bracket these images have on the opposite side of the blade.Can I suggest that it could be the other Bristol engine of the era?
The Bristol Mercury - which was the more compact, shorter stroke - thus smaller cylinder engine
View attachment 566264
Apart from anything else, it was the power plant of the Blenheims - note the counterweights!
View attachment 566265
But then, both the Hampden and Wellington had the Pegasus - so statistically speaking it is probably a Pegasus!
So, I vote for a Bristol radial of some sort. The Pegasus had a longer stroke, so presumably longer cylinders. To settle on which one you would have to take measurements I suspect.
Actually, the Mercury was my first guess, as it was the main engine used by the Dutch airforce, making it even a more likely candidate, but as already shown, the cylinders don't match unfortunately. I agree with you in that I think it's a bristol. Everything on this screams to me it's a Bristol, but I don't have substantial prove, although it's satisfying to me that most of you seem to think in the same direction as I do.Can I suggest that it could be the other Bristol engine of the era?
The Bristol Mercury - which was the more compact, shorter stroke - thus smaller cylinder engine
Apart from anything else, it was the power plant of the Blenheims - note the counterweights!
But then, both the Hampden and Wellington had the Pegasus - so statistically speaking it is probably a Pegasus!
So, I vote for a Bristol radial of some sort. The Pegasus had a longer stroke, so presumably longer cylinders. To settle on which one you would have to take measurements I suspect.
What is this engine?Ah, good one! looks very similar to this indeed:
View attachment 565989
From what I can see is appears to be a 9 cylinder radial engine with a direct drive for a three bladed propeller, that could have had a front spinner shell. The propeller appears to be a right hand rotation tractor type propeller. For reference on rotation, the RR Merlin engine for the Spitfire was a right hand rotation propeller.
I'm afraid I've no idea what radial this is as I only know about Russian engines but the thing I think is odd, all the cylinder heads are missing?? On a trad radial these are screwed on NEVER to come off again, a fixable problem with a normal cylinder head usually writes the whole pot off because to try and separate them usually trashes both bits. It is my opinion that there is no way the heads could conceivably all come off in use so im guessing it was a scrap engine dumped overboard not wreckage or a fallen off engine. It is making me scratch my head as to why all the heads are off?? Its not a sleeve valve engine is it? They might have more detachable cylinder heads seeing as though they dont do much!
Good luck I can't wait for the definitive answer from the assembled genius on tap!
Can I suggest that it could be the other Bristol engine of the era?
The Bristol Mercury - which was the more compact, shorter stroke - thus smaller cylinder engine
So, I vote for a Bristol radial of some sort. The Pegasus had a longer stroke, so presumably longer cylinders. To settle on which one you would have to take measurements I suspect.
For guys with eyes for the right details, do you think this might be a similar engine? I'm not technical enbough to look for the right details. This is an engine at the bunker museum on Schiermonnikoog, the island close by Lauwersoog:
View attachment 566270
Hi Yakman
Dissimilar metal corrosion, especially in salt water will disolve the aluminium heads over time.
Actually, the Mercury was my first guess, as it was the main engine used by the Dutch airforce, making it even a more likely candidate, but as already shown, the cylinders don't match unfortunately. I agree with you in that I think it's a bristol. Everything on this screams to me it's a Bristol, but I don't have substantial prove, although it's satisfying to me that most of you seem to think in the same direction as I do.
Meanwhile I've been searching for reports of found engines in the waddenzee, but came up dry sofar, there are so many, but none mention Lauwersoog.
For guys with eyes for the right details, do you think this might be a similar engine? I'm not technical enbough to look for the right details. This is an engine at the bunker museum on Schiermonnikoog, the island close by Lauwersoog:
View attachment 566270
For guys with eyes for the right details, do you think this might be a similar engine? I'm not technical enough to look for the right details. This is an engine at the bunker museum on Schiermonnikoog, the island close by Lauwersoog:
Doesn't look like a Pegasus to me.
Different crankcase (which appears to be alloy too) and which also has pushrod tubes. The engine you are asking about has a steel crankcase and no sign of having pushrods fitted.