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

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

Post  rsv1cox on Wed Apr 04, 2018 9:16 am

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. Smile





Anyone have a spare piston?  I have a NIP MECOA high compression head to trade.
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Re: For want of a nail....for want of a piston

Post  getback on Wed Apr 04, 2018 9:54 am

Bob , i have a few .049 pistons > i have found that to bee a crap shot to fit the pis/cyl. fit . I can send you them and you can try to fit one if you would like ((( i dont want anything for it just send back whatcha dont need OK ?
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Re: For want of a nail....for want of a piston

Post  rsv1cox on Wed Apr 04, 2018 12:15 pm

getback wrote:Bob , i have a few .049 pistons > i have found that to bee a crap shot to fit the pis/cyl. fit . I can send you them and you can try to fit one if you would like ((( i dont want anything for it just send back whatcha dont need OK ?  

Thanks Eric, I think you have my address, if not PM me.

Nobody just sells pistons, gotta get cylinders too. I have several orphan cylinders.

Bob
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Re: For want of a nail....for want of a piston

Post  getback on Wed Apr 04, 2018 11:51 pm

Ok i will get them in the mail Very Happy
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Re: For want of a nail....for want of a piston

Post  rsv1cox on Thu Apr 05, 2018 12:05 pm

Thanks Eric.

Strange Black Widow tank. Extra holes, funny plumbing. Maybe the perpetrator tried to identify it with those etchings.
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