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Is This a DH Hornet Propeller?

Hi everyone.
This prop has just arrived at our workshop for a customer, and was sold to him as a Hornet propeller.
I always thought they would have had a Hydromatic 4 blader, not a Rotol.
My only other thought was Firefly.
Does anyone know what this is off please?

Cheers

Pete

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By: MerlinPete - 3rd April 2008 at 22:23

Like my clockwise genny? :diablo:

Don`t you mean Chocolate Teapot? 🙂

Pete

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By: Arabella-Cox - 3rd April 2008 at 22:06

… by someone who has been in this game for decades and knows his stuff, or supposedly does

Like my clockwise genny? :diablo:

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By: RMAllnutt - 3rd April 2008 at 21:22

Many thanks for the details and the photograph Pete. That is one beautiful engine… it looks so different to other Merlins I’ve seen!

Cheers,
Richard

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By: MerlinPete - 3rd April 2008 at 21:04

WoW! Isn’t that the series used exclusively on Hornet’s? Any history behind the engine? Very cool indeed.

All the best,
Richard

Yes it is Richard. I think the owner said he had made some enquiries with RRHT, I haven`t heard the results. He is working abroad for the next month, but still has e-mail so I may hear something.

The 134 and 135 were only made in very small numbers, 25 and 45 respectively, most Hornet engines were 130 / 131, the main difference being that the 134 / 135 had a Corliss barrel throttle as in the Griffon 58 instead of a throttle butterfly.

I have attached a photo he sent me after collecting the engine last week. The exhaust stubs are Mosquito!

Pete

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By: RMAllnutt - 3rd April 2008 at 17:11

WoW! Isn’t that the series used exclusively on Hornet’s? Any history behind the engine? Very cool indeed.

All the best,
Richard

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By: MerlinPete - 3rd April 2008 at 00:38

“PS. Is this a crash-recovered Merlin, or a clapped out one resurrected from the dead?”

Neither, it is a clean good condition stored Merlin 130 series that has the potential to run again after a strip down and re-assembly.

Cheers David, you beat me to it!
In fact it will hopefully only require deep inspection which does not involve much dismantling, although I have yet to see the engine myself.

Pete

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By: TempestV - 2nd April 2008 at 08:48

“PS. Is this a crash-recovered Merlin, or a clapped out one resurrected from the dead?”

Neither, it is a clean good condition stored Merlin 130 series that has the potential to run again after a strip down and re-assembly.

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By: RMAllnutt - 1st April 2008 at 22:41

Many thanks Pete… despite the potential problems, I hope it fits!

All the best,
Richard

PS. Is this a crash-recovered Merlin, or a clapped out one resurrected from the dead?

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By: MerlinPete - 1st April 2008 at 22:33

Just out of curiosity, what aircraft is/was it supposed to be going on?

Cheers,
Richard

Hi Richard

It is going on a ground-run Merlin 135 which has left-hand rotation.

Pete

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By: RMAllnutt - 1st April 2008 at 22:24

Just out of curiosity, what aircraft is/was it supposed to be going on?

Cheers,
Richard

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By: MerlinPete - 1st April 2008 at 22:16

Many thanks Anne, where would we be without you?!

That answer is not good really, because we are talking about what was supposed to be a complete propeller, and quite clearly isn`t, the hub has a No 5 spline to fit the Merlin (or Griffon) but the Viking should be a No6 spline.
The screw thread on the blade shank does match the hub, but unless we can be certain they are interchangeable then it ain`t going on an engine.

I am slightly annoyed becasue the prop was sold to my customer by someone who has been in this game for decades and knows his stuff, or supposedly does, and a lot of money was paid for it, so I hope it does not throw up any further surprises!

Pete

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By: anneorac - 1st April 2008 at 09:07

Did someone call?

What you’ve got there is a Vickers Viking blade. There is however a deHavilland connection as the original Rotol list I’ve taken this info from records this blade as having been made to ‘D.H. Planform & Thickness’.

I’ll go and crawl back into my hole now…good trick if you can do it!

Anne

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By: MerlinPete - 30th March 2008 at 16:56

Thanks David

We all agree it isn`t Hornet then!

Pete

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By: TempestV - 30th March 2008 at 07:43

Hi Peter

I have sent you some Hornet prop photos via e-mail.

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By: Bruce - 29th March 2008 at 07:36

Indeed – Hornet only used deHavilland hydromatic propellers.

Anneorac usually gets these ones!

Bruce

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By: John Aeroclub - 28th March 2008 at 23:14

David Collins is your man, but no Rotols on Hornets.

John

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