Are thin piston rings worth horsepower?

[Momus]

A taller oil ring package also works better for oil control

How is this conclusion arrived at? Data from ring manufacturers or testing?

Low height oil rings offer obvious packaging advantages and less chance of flutter.

I have smaller bore stuff here with 3 piece oil rings that are 1.5 mm high.

Did you read my previous comments?

Yes, and what was the reason arrived at why the 1.5 rings didn't work there, when they obviously work well in many other applications?

[NORSK]

How is this conclusion arrived at? Data from ring manufacturers or testing?

Low height oil rings offer obvious packaging advantages and less chance of flutter.

I have smaller bore stuff here with 3 piece oil rings that are 1.5 mm high.

Did you read my previous comments?

Yes, and what was the reason arrived at why the 1.5 rings didn't work there, when they obviously work well in many other applications?

They do work,just not as long as a taller ring package before they get clogged up.
I assume you deal with motorbike engines since you mentioned small bore stuff,they do not see the same mileage as a car street engine.

Anyway,the topic here started off with if there was an advantage with thinner piston rings regarding if there is any power to be made
A thinner ring has less friction surface obviously,and yes thinner rings gives more space for a tighter ring land with all the advantages that brings along.

However,as Mark O Neal mentioned,if the oil ring package gets smaller the oil rail tension has to be higher
So the way i see it,if we use a 3mm package with same height on both rails as in a 2mm package,then the tension of the 3mm rails can be lower and the friction will be lower
So whats the point in using a 2mm versus a 3mm UNLESS there is space issues
This is the part i don't understand

I see you mention ring flutter,is that really an issue for a oil ring?