Originally Posted by
Glowgeek
They don't now but not sure about the CL version. Current parts lists show the 56, 62 & 65 sharing the same muffler, 62 and 65 sharing the same carb.....which we know wasn't the case originally
..and the 72 having its own carb and muffler.
I have a 56, 62, 72 & 82, can measure them if you want.
The only "CL" version I am aware of, here in the US is the FA-62 CL. It has the fixed bore venturi.
A .56 would pump about the same volume of air at 12,500 RPM as a .72 would at 9,700. Fudge that a bit for the differences in efficiency and the charts work.
Edit: Below is a link to the Saito manual gor the engines in question.
https://www.horizonhobby.com/on/demandware.static/Sites-horizon-us-Site/Sites-horizon