23:55 - "Check that" - I love watching a Man teaching our youth, let alone this Gentleman and his kind yet confident approach... makes for a damn good A&P! 🤝🏻
Wow impressed with your teaching skills ....i am a fleet mechanic ...do have a couple good helpers ....the good ones just love when i explain them how it all works ...they others are like Good Enough it runs ....
0:51- what was that sound, while rotating the prop? Also just had a random question; how do you know if you have a bent or spalled cam? I’ve looked at the lobes on mine, and they looked fine. For some reason, when I rotate the crank, the cam gear makes that same sound that’s in this video. I am in the process of over hauling a Lycoming IO-360 A1A. I timed it to the #1 cylinder, and was rotating the crank, and the cam gear kind of makes a loud tick/click sound, close to like the one in this video. I have a video of it, on my channel if you want to check it out. Any ideas what it could be? Thanks.
Very basic answer: That is an impulse coupling, basically a spring loaded coupling between mag and engine. When it snaps it essentially is making the mag faster in order to produce enough current to produce a spark. Used for starting the engine. When running counterweights basically take the coupling out of the picture.
That would be early, but I think you have it backwards. Spark fires before TDC not after so if you’re firing at 24 degrees before TDC that would be 1 degree later then 25 degrees so it would be firing late.
