Member postings for Don Brymer

G'Day All,

Thanks everyone for your input.

Problem resolved as regards to the most suitable material for the rings. I will need to source some suitable C.I.

With regard to the manufacture of the rings, I initially plan to use the method described by Tom Schwartz in issue 27 of the Model Engine Builder Magazine as I do not have access to the other articles mentioned.

Thanks & regards,

Don.

G'Day All,

Thanks everyone for your input.

Problem resolved as regards to the most suitable material for the rings. I will need to source some suitable C.I.

With regard to the manufacture of the rings, I initially plan to use the method described by Tom Schwartz in issue 27 of the Model Engine Builder Magazine as I do not have access to the other articles mentioned.

Thanks & regards,

Don.

G'Day All,

I am currently building a Hit & Miss engine & I am undecided on the best material for the piston rings. Details are;

Cylinder, cast iron & Ø30 mm: Piston stroke 40 mm: Rings, Ø30 OD, Ø27.5 ID & 1.25 mm wide: Engine speed possible 700 - 800 RPM.

I am not sure about cast iron rings in a cast iron bore & have been considering leaded bright mild steel. Could those members that are IC builders please comment.

Thanks in advance,

Don.

Edited By Don Brymer on 23/10/2012 00:53:23

David,

The generally accepted terminology used in Australia; side rake, side clearance & front clearance are the same as in your sketch, with top rake referred to as back rake, front relief referred to as trail angle & side relief being approach angle. The approach angle in the sketch being negative. Possitive approach angle, angled toward the right when viewed from the top of the tool.

Regards,

Don.

Edited By Don Brymer on 07/10/2009 09:42:59