secondshooter

Got this from a mate who has been involved with vintage aircraft.

that's a 50hp gnomemonosaupe cylinder first manufactured 1908 . Wigram had one fitted to a caudronbiplane in ww1 I think a few went in bleriot types there too. Monosaupe meansone valve...

we are getting close perhaps there already ? its just the twin plugs to sort out . I have removed the ringer and will take some more photos shortly.

Thanks for your input guys , I have learnt an awful lot more about these engines over the last few days , the link to the sectioned drawings explained a lot. im guessing the holes at the base of the cylinder are for introducing some of that caster oil mixture onto the rings , an unusual wave pattern and the differing hole sizes, perhaps to introduce more oil to the side of the bore that wears the most?

twin plugs look to feature on later engines , transfer ports superseded the piston valve set up . almost like it has very early features and very late features from the rotary engine?

if you need any more photos I will have time tomorrow to take a few , the ringer is not part of the old valve as far as I can tell.

another question is how did it get to New Zealand ? the old guy who gave it to me also had another story about WW1 German aircraft being buried under what is now tennis court.

Last one .

Bore diameter is approx. 138mm length of cylinder (less rocker bracket) is approx 265mm ) 17 holes around lower cylinder ranging from 8mm to 3mm in diameter

more photos

Here are some more photos , havnt got the ringer out as its corroded in , have put some oil on and will have another try tomorrow.

First thing is to take as many photographs from as many different angles as possible of it assembled ( and each component and during the strip) it will be invaluable when it comes to re assembly. after a good clean spray everything in penetrating oil and let it wick into to all the threads and joints , do this before you let the keen young mechanics try to pull it apart. don't let them cut or grind anything off until the grumpy old workshop foreman has had a look at it first.

looks like a great project !

Thanks mtskull , looked it up , its very similar but the plugs are coming off at a right angle to the bore and the rocker brackets are slightly different ?

Only clever enough to do one picture per page?

more pics

Hi Folks , this has been my door bell for years and I was told it was a Stuart tank Cylinder Head from the person who gave it to me. never gave it much though apart from being a cool door bell. was looking at Stuart engines the other day and it is not one? after a bit of googling it looks more like something found on WW1 radial aircraft engines , bore is approx. 138mm height (less rocker mounting) is approx. 265mm. it appears to be turned from one billet of steel , has been modified at the top to be hung up (possibly why is still around ) so disregard that top loop.

Any body know anything about these old engines?

Havnt done much in the last few weeks , firing linkages on today , orange flag is to stop me walking into the sight bracket (small workshop)

just about done the big bit.

Note dodgy extension on crane

more progress , im not sure I like the colour but that is what I have .

Thanks for the info guys , will head down to the local automotive supplier and see what I can get hold of ! something a mate told me , paint it any colour you want , its your gun and if they don't like it tell them to buy their own and paint it in a colour that makes them happy!

Hi , sorry I cant help with your problem but maybe you can help with mine? where did you get that picture and do you know if there is something similar for a bofors? cheers

Hi Folks , have been struggling to find a modern equivalent paint to replicate the colour used in north Africa by the Allies , has anybody painted anything in the desert cammo ? if so what did you use? will be painting my Bofors.

cheers

Hi , any chance of a photo of the equipment you have ? cheers

Gun is mostly complete , missing breach block and barrel has been torch cut before it was sold for scrap . am now trying to find info on WW2 North Africa desert cammo paint ? I know its a naval gun but it wasn't always , during the strip I found several layers of paint one was the standard army green so it was at one stage a land based gun. the history I know is that after WW2 the navy gathered up a stock of serviceable bofors and stored them in case they were needed if the cold war escalated . so the big question is do any of you have a modern paint code equivalent to what was used by the Allies in North Africa?

looking more like a gun.

Missed a lot of photos out but base back together, elevation and traverse gearboxes installed . then body dropped in.

most bits went to the sand blaster , did the body by hand as it still had a nice phosphate coating inside , the sand blasting would have removed it.

in pieces, came apart very easily despite being outside in the rain for many years , navy armourers are not shy about using grease !