Recent content by dairwin

Looks like a German/VDM blade.

I don't have the ops manual specific to the M66, and I don't have a curve I can find, however it is likely to be similar to the M63, M63a, M64, M72, M73 chart below. The M66 maintenance manual specifies a max fuel flow demand of 154 gallon/hr (fuel pump delivery). Although not answering your...

Aaron; PM sent. DAI

All Packard engines were fitted with Bendix-Stromberg carbs (except the very late fuel injected types), US magnetos, epicyclic gearbox drive, and certain other changes (fuel pump, improved water pump). The Packard Merlins were equipped with SBAC No5 prop shaft, versus the Packard V1650 SAE50...

Sure thing: The model is of a Packard engine, not a RR engine, because the model exhibits components that are Packard specific. However the model is advertises as a RR Merlin. It is not just the rocker covers that are misplaced. Packard did not just produce engines "... all intents and...

I won't begin to correct you. Your animation speaks volumes.

..and that model is of a Packard engine. Did you ever find a model?

Excellent scan Harold. I had one previously of this document, but this is far superior! Is there a front cover you could scan for completeness? David.

For the Merlin, there were three general types described as; single speed, two speed, and two stage. The single speed engines used a single supercharger stage with one drive ratio. The two speed engines used a single supercharger stage but had two ratios driving it; a moderate and full speed...

One can spot the occasional errors in the manuals. Some of the foreign language translations can be shocking. The diagram is applicable to most single speed Merlins (one speed?), including my Merlin VIII.

Having a further look (and until we see better photos); prop is non-feathered, right hand rotation, with variable pitch mechanism and significant assembly on rear of hub. Rather like a Bf 109. See this video; specifically freeze frame at 1:48 and then again at 1:55. Prop retaining assembly...

Doesn't look like a Rotol or Ham Standard. More detailed photos can only help. DAI

GregP - PM sent! Thx, DAI

GregP - email sent. Thx, DAI

Yes, however these late Merlins use standard numbering (Roman was used from MkI to XX only). The 500 series engines are post WW2 Merlin numbers for either foreign military or civilian operators. The -20 specifically was used on a Fiat G59 aeroplane.