Mark _australia said..Paducah said..Mark _australia said..
But it’s prob sand in those grooves rather than corrosion so good twist attempts with the bashing may help. As may sensible heating of the bottom of the mast
Good idea on creating a temp difference but wouldn't something cold to be better? Hot will make the aluminum expand (my favorite ai assures me it has a higher coefficient of thermal expansion vs cf) and just make the fit more snug. Ice water or a blast from an aerosol freeze spray.
Heating mast - expansion. And the extension is carbon I thought…?
Oops! You, sir, are correct. Although I've had a couple of those extensions long ago, all mine presently are alu and that fogged my brain. fwiw, the same ai said the thermal expansion of cf wasn't much (but I'm not in a place to suggest not trying it):
"Carbon fiber: ~0 to 2 µm/m·°C (and can even be slightly negative along the fiber axis, depending on layup)
Carbon fiber has an exceptionally low CTE, which is one of the reasons it's used in applications where dimensional stability across temperature ranges matters (telescope mirrors, satellite structures, precision instruments)."
I will say that with the 725 wing (more analogous to your situation), I have to be planing to take off. I run the 1.0 shim with the mast base at 105cm from the front screw and the HGO 8 fwiw.
