[modeleng] Re: Pistons & Rings

Harry,

I bought mine direct from the manufacturer, and he said that they needed up 
to 2 thou extra width, and up to 10 thou extra depth.

Hope this helps, if not, email me back off list and I'll help wherever I 
can,

Peter
----- Original Message ----- 
From: "Harry Wade" <hww@xxxxxxxx>
To: <modeleng@xxxxxxxxxxxxx>
Sent: 21 March 2008 21:31
Subject: [modeleng] Pistons & Rings


Some of you will see this question posted in the ME Clearing House but I 
thought I should also ask here.  I'm ready to make the pistons for my 2X 
TICH and have a new (to me) situation to address and I'd like to hear 
opinions as to how best to proceed. The pistons will be cast iron, 1.625" OD 
and .500" thick. The rings are Clupet style, .125"" wide x .075" thick, two 
rings per piston. My question then is about what method to use for providing 
ring grooves and seats.

My inclination is to make split pistons and provide a T-ring for the ring 
grooves and a separator, and I'm assuming a separator is needed.  Also what 
should the lateral and radial working clearances be for Clupet rings?  Any 
experience with fitting Clupet rings out there?
Cheers,
Harry

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