[SEL] Lindsy Alamo Piston Ring Qustion

[bill at antique-engines.com]

Professor Dave is right on.
Piston rings rotate during normal operation.
On a 2 stroke/cycle, this is a bad thing due to the ports and edges.
On a 4 stroker it's normal and preferred.
Our low speed engines won't realize much if ANY rotation.
The pins are not really essential.
If they rotate, so what, it's normal and actually wanted. If they don't,
then gee, they are acting like they had pins.
Two choices - take the pins out/remove them or cut the rings to fit the pins.
Precision? Not needed on these antiques.
If you were building a high speed/high power engine, race car, AIRPLANE
engine, etc., I might argue a bit (and let you speak with Charlie if it's
aircraft related - something about ram's blood?).
Even if you cut or grind the rings to fit around the pins, a bit off is NO
big deal.
Listen also on the ring gap  - too little is deadly, too much won't hurt
much. Dave gave advice that will help you make that thing run.

Bill

> Hi everybody
>
>      I' m talking about the little pin's that hold the ring in place. the
> origional rings have a little pice cut out on the tip of them to go aroud
> the pin in the ring grove if that makes sense. I got the new rings form
> hit
> & miss
>
>                                                      Stacy
>
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