well, this is one of the reasons I like my big gas engines - first they turn less RPM - no reason to have the fingers close the fan at full throttle (adjustment). I got smacked ones by a backfire gasser, these blades are so blunt no cut just some bruises.

Most modelers - 99% miss to deburr these small blades. The parting sharp seam gets them, I try to tell them all the time but nobody is listening, just some young guys after I sent them a link of prop bite pics like yours go across the blade and take the edge off. May you loose about that 50 rpm.

Worst "prop-strike-offenders" are electric motors because they don't stop.


Sorry to hear that Barry, now you have the chance to do a good thing and warn when you see pilots to close (or worse by them self) tinkering to the fan - offer your help and insist.

I've got one small bite from starting an engine. The real damage has happened when I have put my hand through the arc of a running engine, both times to adjust a needle valve. The first time was while breaking in a Supertiger .45 on my trainer, probably close to 20 years ago. Sliced my index finger something like 13 times from knuckle to tip. It is still not "right". A neighbor kid had come over to see what the noise was about (engine, not me yelling ). I'd been richening/leaning enough times that when I got distracted I just reached through. Second time was while performing a final adjustment on a kid's trainer .40, fortunately at fast idle. Still took months for my thumbnail to grow normally. Very easy to get distracted by others. I use a starter on small engines and a heavy leather glove for hand propping gassers. Always tie down your planes and always have bystanders away for both their safety and yours. I HATE starting big Saitos!

That hand!<div>Dude, post a warning.</div><div>Intense sympathy. </div>

I cut myself day before yesterday just installing a 16" prop (electric). Just turned it with my finger to make sure it was on properly. It sliced my finger.

Harry

That is exacly what I'm talking about - you need to brake the edges!