Prop help

[H2oSki2Fast]

heres my take,... his 28 is flattend out and is no longer a 28p prop.... I could be wrong, but the slip numbers don't jive


we were running side by side, I was at 4300/4400 rpms doing 72... he was at 5000 or over doing 72... I have a 26p he has a 28p sounds backwards...

I have a few props he can try...

Prop don't gain or lose pitch (unless the ears are completely removed from the hub and welded back on.. They are measured in the center of the blade. Adding or removing cup can add or reduce slip, which in turns allows for the variation in RPM.

If the slip numbers don't jive, make sure the tach is reading correctly. Take GPS speed reading at every 500 RPM increments, also recording trim settings any anything else that may affect the readings. It really is the only way to truly figure out what the prop is doing. Take that info to the prop gurus and let them work their magic.