Packard Forum Index » Pre-War (1899-1942)

I have reviewed all of the sylphon rebuild threads here and on the AACA forums. I have the temperature (various models) and 9/16" full extension stroke Packard specs for the completed units.

However: does anyone have the "fill percentage" or "mass of working fluid" for a completely empty Sylphon bellows assembly. I have the ACS-grade (purest) methanol (per the original design) and would like to not diddle/experiment if someone has worked out the fill ratio.

I saw a vague reference to "half of the bellows volume" but there was no temperature vs extension (stroke) testing thereafter...just "I'm going to see how it works in the springtime"...concerned about that guy's overfill risk.

I'm an engineer and am trying to be more concise in the refill process if anyone can help...once I have the total recipe, I'll post that on the forum for future Syphonites.

Thanks. Dan M.