Mystery piston

Member for

8 years 11 months

Posts: 48

hi all, i work in a converted wartime hangar and recently a workmate lifted a metal floor plate and found the top half of a piston. ever the romantic id love to think its from one of the aircraft based there during the war. it is quite badly corroded, but after a quick wire brush, some numbers and letters are visible on top of the piston. was wondering if anyone knew if there are any ways to try identify said piece? best regards. s.:D

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Profile picture for user Dr Strangelove

Member for

11 years 7 months

Posts: 1,310

A picture of said piston & numbers would be helpful.....

Member for

13 years 3 months

Posts: 9,690

As has been said a photograph would be best but failing that:

- diameter of piston crown?

- description of crown: flat, domed or concave?

- description of underside of crown: smooth, ribbed (insert condom joke here) or other features?

Member for

8 years 11 months

Posts: 48

A picture of said piston & numbers would be helpful.....

will endeavour to come up with both picture and numbers asap. cheers. s.:D

Profile picture for user Lincoln 7

Member for

9 years 7 months

Posts: 8,306

Sounds a very interesting find you have made. As everyone states, "A picture paints a thousand words"If anyone can I.D. it, given what is asked, then C.D. is the chap, he has I.Dd. several for me.
Jim.
Lincoln .7.

Member for

8 years 11 months

Posts: 48

As has been said a photograph would be best but failing that:

- diameter of piston crown?

- description of crown: flat, domed or concave?

- description of underside of crown: smooth, ribbed (insert condom joke here) or other features?

will take few sizes with the old tape when back to work. pretty sure top of piston is flat but with concave dip with a nipple (insert joke) in it. something to do with combustion?. also, parts of piston rings are just gleaming. would these be white metal? hope photos to come are of help too. cheers . s.:D

Member for

8 years 11 months

Posts: 48

Sounds a very interesting find you have made. As everyone states, "A picture paints a thousand words"If anyone can I.D. it, given what is asked, then C.D. is the chap, he has I.Dd. several for me.
Jim.
Lincoln .7.

many thanks for that. just hope its not from a tractor lol. :D

Profile picture for user Dr Strangelove

Member for

11 years 7 months

Posts: 1,310

pretty sure top of piston is flat but with concave dip with a nipple

Sounds like a diesel piston... http://www.mocgb.net/forums/images/smilies/yahoo/39.gif

Member for

13 years 3 months

Posts: 9,690

...also, parts of piston rings are just gleaming. would these be white metal?

Not white metal, if they are gleaming, most probably chrome (plated); it is sounding like a diesel piston to me.

Member for

8 years 11 months

Posts: 48

Not white metal, if they are gleaming, most probably chrome (plated); it is sounding like a diesel piston to me.

hi again, was afraid id hear it might not be an aircraft piston but hey ho! wasnt able to take pics today but jotted down a couple of sizes and numbers that are legible. they are as follows: approx 107mm dia. x 120mm high or imperial equivalent. metric rule used sorry. numbers: BLPV 100080?? 703F-61??.

Profile picture for user Denis

Member for

15 years 10 months

Posts: 1,496

Sounds like a Perkins diesel piston to me too.

Member for

13 years 3 months

Posts: 9,690

...approx 107mm dia. x 120mm high or imperial equivalent...

Sorry, way too small for any serious aero-engine (unless you count Napier)!

Member for

8 years 11 months

Posts: 48

Sorry, way too small for any serious aero-engine (unless you count Napier)!

cheers CD. i actually thought it was a bit large for an aircraft engine. shows how much ( or little) i know!! . as an aside, the hanger in which i work at ex raf evanton used to have some lovely aircraft recognition posters on the wall, which some clown saw fit to paint over. some folk just dont get it!!

Member for

8 years 11 months

Posts: 48

Sorry, way too small for any serious aero-engine (unless you count Napier)!

hi again, could i pick your brain regarding the possible origin of a flap position dial found in the hangar where i work at ex raf rn evanton. many thanks. s.

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Member for

13 years 3 months

Posts: 9,690

Sorry, I’m no use when it comes to instruments.....but I’m sure somebody here will be able to help.

I’d still like to see a photograph of your piston if you can post one.

Member for

8 years 11 months

Posts: 48

Sorry, I’m no use when it comes to instruments.....but I’m sure somebody here will be able to help.

I’d still like to see a photograph of your piston if you can post one.

will be happy to post a pic of the piston asap. cheers.

Member for

8 years 11 months

Posts: 48

Vampire

hi there, according to some bumf i found, the closing date for the airfield here was march 1948. this obviously means there were no vampires based here. any suggestions?

Profile picture for user Bruce

Member for

20 years

Posts: 8,425

Vampires were operational from 1944, so no reason why not!

Bruce

Member for

8 years 11 months

Posts: 48

Vampires were operational from 1944, so no reason why not!

Bruce

many thanks for your reply bruce. wasnt at all sure when the old vampire came into service wrongly presumed it was later than when raf evanton closed. im delighted because i couldnt tie it together otherwise. the literature states all the aircraft based there before, during and after the war. this obviously doesnt include the vampire, though i suppose it makes sense they could easily have been visiting, on detatchment etc?.

Member for

8 years 11 months

Posts: 48

Sorry, I’m no use when it comes to instruments.....but I’m sure somebody here will be able to help.

I’d still like to see a photograph of your piston if you can post one.

the mystery piston. cheers. s.

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