ebay

Glad to hear it Ross, would suggest you repost your entire post and start a new thread as it will not get the same exposure on this thread.:)

Yes, I like to think so…

I’m in a bit of a delima at the moment over the Anson project.

I have the main panel and throttle box of a T.21 or C.18 (cannot decide which at the moment)

The jigsaw of fuselage frames are Mk1/2 with the mounting for the forward firing machine gun.

Finally kicking around in the stores are the flap indicators, fuel gauge, engine speed indicators and blind flying panel for a Mk1.

So do I use the fuselage frames for a Mk I with new fabricated main panel and throttle box.

or a Mk 2 using the Canadian throttle box and new fabricated main panel

or a Mk21/18 using the Mk1 fuselage frames with new fabricated frame over the front spar.

Was hoping to get the Mk 2 main panel from the same guy but went for more that I wanted to pay plus the postage.

As all the components have no history there is no specific Mk or aircraft to give a lead for the project.

Thoughts?

Ross

Fuselage frames

Looks as though it has gone to a good home for £82.01.:)

Some version of the Mk. II had variable pitch propellors on their Jacobs engines, hence the extra set of levers.

You are looking at the two throttle levers in the centre position, with mixture control levers outboard of each one.

The propellor pitch control levers are the lower left pair.

Well b***er me, Why did the throttle padestal design change?, seems it could be confusing having 4 levers the same in a row on a 2 engine aeroplane, what 2 were the throttles and what were the other 2 for, mixture, prop pitch?
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ExoticPetite live

Yes indeed the throttles are from a MK 2 Anson that are for sale, the picture from B17man is that of a MK 1 Anson, cheers Darrell

I am not an expert on Ansons but do the 4 levers in a row suggest a four engine aircraft?
Images from the Greenwood military aviation museum, this is the cockpit of their Anson, only 2 throttle levers.
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MEDICAL MARIJUANA

On the subject of Evil bay, after the popular success of the first installment of bits and bobs form my collection (and having spent an age down the post office this morning), I’m going to slowly dribble some more bits of my collection on there. A further 8 items have been listed today. Search under Hoskins3249.

FB

It looks like an Anson throttle pedestal to me.

Check the vendor’s location and apply some thought…;)

WW2 Avro Anson Throttle Quadrant. RAF Spitfire, WWII

Nice description:D 😀

Brian

I have seen pistons of this design in Meteor Mk4Bs and M120s.
The M120 and Meteorite are highly modified versions to aid production, although were not made in large numbers as it turns out. They have a head which is not handed, the cam drive section bolts to either end, the opposite end having a cover plate. The similar parts are the crank, rods and pistons, as well as the camshaft assembly.(Obviously Meteorite cams and cranks are the same style only as it is a V8) The crankcase is quite different, and on the M120 the mags are mounted in a different place, etc etc!
The wheelcase on a Meteorite is the same as a Meteor, and it also has the same exhaust ports as a Meteor / Merlin, the M120 doesn`t.
The Meteorite and M120 were developed very much in parallel, and in fact the prototype Meteorite was also fuel injected and developed 500 bhp, but production versions were derated to 2000 rpm and fitted with two Solex 46 ZNHP carbs with 33mm chokes that would not look out of place on a car engine, the result? 260 BHP from an engine with a pedigree that means it should be good for 1200! (supercharged, that is) Admittedly it does make nearly 1000 lb ft of torque.

FV part numbers apply to all military vehicles. I have a feeling that EM parts are specific to Meteor family engines.

Pete

This design of piston was introduced on the Meteorite and M120, then subsequently fitted to the Meteor.

The b&w pic shows the Meteorite piston.

ANY part with an FV or EM part number is Meteor family and similarly never went anywhere near an aircraft.

So a piston with four rings (two compression, two oil-control) all above the pin as in your B&W photo is from a Meteorite only, or could it come from a Meteor (or M120)?

Is an M120 ‘just’ a fuel injected Meteor?

What is the difference between a FV (fighting vehicle?) and an EM part number?

cheers mine looks like a short skirt late merlin then…cheers

Glad to hear it! I was a bit worried you may have bought something…er…un-Merlin. 🙂

Just to return to the subject of eBay and unreliability of descriptions…

…the Meteor piston in the photo I posted came from the Shoreham Aeromart, and the description?

“Spitfire / Hurricane Merlin Piston”

I still bought it, but then I was almost certain it was a Meteor piston (and I like tanks too).

So, not just eBay to watch out for.

Buyer beware! 😉

WA$.

The above may be true but , so is above that!, as a generalisation ,short pistons provide less stability in the bore, and promote bore wear and ringland wear, and are normally lighter.

Agreed.
Sorry, I wasn`t trying to imply that you were wrong Stuart.

Pete

cheers mine looks like a short skirt late merlin then…cheers

The above may be true but , so is above that!, as a generalisation ,short pistons provide less stability in the bore, and promote bore wear and ringland wear, and are normally lighter.

Short pistons are by definition lighter, and create less friction , and in racing thats fine (ideal), but they also provide less stabilty for the piston rings,and the grooves wear much quicker as do the bores (and the pistons themselves).

See what I mean? it`s a BIG subject!
The Merlin does not follow the racing engine philosophy, the short piston falls into the same range of weight groups as the skirted types, the ones I have here are typically 1 ounce heavier in fact than the early ones. They are stronger to withstand high boost. The skirt was deleted during development of the two-stage Merlin 60 series due to fatigue cracking of the skirt either in the ring groove or oil holes, which may account for the Meteor piston having a skirt but no oil holes?

I`ve taken a pic of late Rolls-Royce & Packard pistons. There is a difference in the shape of the bowl, the left one is a Packard 618600 and the other RR D38785/1. I would be cautious about generalising though, you would only get the complete picture if you had one of every type to look at.
Both these are 6:1 CR before anyone asks!

Short pistons are by definition lighter, and create less friction , and in racing thats fine (ideal), but they also provide less stabilty for the piston rings,and the grooves wear much quicker as do the bores (and the pistons themselves).

It could well be that what you have is an Allison V-1710 piston. The Allison has a slightly bigger bore than the Merlin, so many racing Merlins have been bored out and fitted with Allison pistons. The slightly dicey element here is that the Allison piston won’t fit onto the Merlin con-rod, so the top end of an Allison con-rod was welded onto the bottom end of a Merlin one!
There was an excellent article in AirEnthusiast about modifying Merlins for racing and that’s the process as the article describes it.

great posts Merlinpete and Creaking door….my merlin piston i picked up at Reno off Voodoo is different to both…Packard?