Poppets, sleeves & other stuff

Engine tech, for those engines, products, and technologies of yesteryear.

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BCjohnny
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Re: Poppets, sleeves & other stuff

Post by BCjohnny »

The various chambers of contemporary aero engines

Merlin I (ramp head)
rrmerlinramphead.jpg

Merlin II (main production)
rrmerlin.jpg

Packard Merlin
packmerlin.jpg

Griffon
griffon.jpg

Allison
Allison9.jpg

DB 601
DB601_4.jpg
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MichaelThompson
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Re: Poppets, sleeves & other stuff

Post by MichaelThompson »

Here is a great article about my favorite aero engined race car, the “Hisso Special”. Powered by half a Hispano-Suisa liquid cooled aero V8 engine. Pure sex!

https://www.hotrod.com/articles/half-of ... -roadster/
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frnkeore
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Re: Poppets, sleeves & other stuff

Post by frnkeore »

Least we forget the Ford, all aluminum, DOHC, gas engine, GAA (1100 CI V8) & GAC (1650 CI V12), both 60 deg V's and both used in tanks (M4 & T29). B&S were 5.4x6.

As the story goes, the engine was first designed as a V12, aircraft engine for the Navy but was canceled. The Navy decided it only wanted radial engines. GM had the rights to all other V12 applications, with their Allison. I suspect there were politics in that.

It looks like a very good design and I love the cam drive. It was a very reliable engine, too.

Both were governed to 2600 rpm. 500 HP for the V8 and 750, for the V12 but, dynoed to 525 & 770 @ 2800.
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BCjohnny
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Re: Poppets, sleeves & other stuff

Post by BCjohnny »

frnkeore

The GAA was an advanced engine for it's time ...... I guess politics, an overcrowded marketplace and already proven designs killed it for aero

Entirely co-incidental it shared the B&S with the Merlin ...... lol

CC was very reminiscent of the Allison
GAA-cross-section-through-cylindersfixed-flattened.png
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BCjohnny
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Re: Poppets, sleeves & other stuff

Post by BCjohnny »

Engineers dream, maintenance nightmare ...... although it did eventually evolve into a very effective engine, despite continually trying to incapacitate the pilot

https __i.pinimg.com_originals_25_a5_51_25a55130f21401694f7f45d27ce427f2.jpg
https __i.pinimg.com_originals_a2_da_05_a2da0507f3834fb3575243b573757539.jpg
https __i.pinimg.com_originals_e0_0d_8b_e00d8b0108181d88332e58a01afe0075.jpg
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