For want of a nail....for want of a piston

a Cox was lost.

Last of the made-ups, bottom of the barrel, down to this.

Badly over torqued ventless back plate, really nice die cast case with a broken off screw in one of the holes, a crank shaft with a broken off Prop screw, but a decent grooved external ground cylinder and new vented 8cc tank and a new MECOA glow head.

I got real lucky and managed to remove both broken off screws making the crank shaft and case usable again



I was going to use this modified Black Widow tank but I had JB welded the holes making it unvented, no good with the unvented backplate.  



I decked the back plate on a flat surface using 400 grit wet/dry paper as far as I dared.



Strange etching on the BW case. IX/V.  Used a new vented stunt case instead.





Looks good, but no piston, therefore very little compression.





Anyone have a spare piston?  I have a NIP MECOA high compression head to trade.