Minor correction, if prop/crank is at 2000rpm the cam is 1000rpm, not 4000; bigger gear is on cam and idler. Great video that should help a lot of peeps!
Yes, I misspoke and need to pin a correction. I thought I had edited out most of that but I guess I missed one. It's a 2-1 reduction in crank speed. So for every 2 rotations of the crank the cam only does 1 rotation.
Very well done, Seth. I've been a pilot for a couple decades now and already know most of this, but it took me a lot longer than 20 minutes to learn what you've just shown in this video. This is fantastic for both new and experienced pilots. You're removing the mysteriousness from one of the most critical components of our aircraft and greatly adding to the collective knowledge resource pool for general aviation. This information can save lives. I'm eager to watch the rest of the series and will be recommending it to other pilots. I wish I had something like this to watch when I was a new pilot. On behalf of the general aviation community, thank you for your efforts.
Great series Seth, would be great to see all systems broken down like this. Even with a strong mechanical background it really tied it altogether for me with the aircraft.
Wow! Never knew about the bearing, how it functions, and why oil pressure is so critical. I will never ignore my oil pressure gauge again!!! Thanks Seth!
Great video Seth. What a great idea to make a series about the powerplant using a disassembled engine to truly show the inner workings. Far better that any other video I have seen on the subject. Keep up the excellent work. Safe skies 🇺🇸🛩️
Excellent! Keep up the good work. I know most of this stuff already, (born in a hangar basically) but this is VERY important for the rest of us! You might cause someone to commit aviation of some sort.
Thanks so much Seth! Heard you on a podcast previously and your YT videos are insanely helpful. You really made a non mechanical 2nd career student pilot understand aircraft engines a lot better!
Thanks for this deep dive. I'm curious about the pressure sensors at each bearing and how they relate to the reading at the oil pressure gauge. Does the gauge show the reading of the sensor with the lowest pressure?
There is only a single oil pressure transducer in the engine, no one for each bearing. To quote Thomas Sowell: "There are no solutions. There are only trade-offs." This especially applies to aviation. More pressure sensors would increase complexity which would decrease reliability. One is good enough, but knowing there is only one pressure sensor is good information for a pilot when dealing with a abnormal situation.
@@SethLakeDPE Ah, I was confused by the comment at around 16:50. Thanks for the clarification. I have my PPL and IR, but haven't flown in 15 years due to life circumstances. I'm trying to soak up as much as I can before getting back with a CFI, so thanks for the great content!
Just so know one else has to pause the clip to do the quick math, and for an idea of what those numbers look like: I believe that's 276,000,000 rotations for the outer lobes VS 552,000,000 for the double duty loabs.. Avg 2300rpm over just 2000 hrs.. wow! I train at a flight school that's pretty kool (aircraft, maintenance wise etc.) But to Seth's point, the fact that idk what other pilots may have missed (myself included not being aware of what he just explained, until now)... As it relates to all of us different folks (of varying exp levels) hopping in and out of the plane, flyin all around, and doin who knows what up there... I'll def be one to share this clip with others, so that we All can help each other keep safe, and be that much more conscious of that OP Guage when scanning. Great info bro, love the content 💪🛩👌
Aircraft crankshaft is forged first to the rough shape and then final machining operations are done. It is not machined from single block of steel as you state.
Just started studying for my Commercial and wanted to actually learn more about the engine instead of just being able to blurt out answers. These are the videos I’ve been looking for and can’t wait to supplement it with my readings!
I'm in A&P school and this was extremely helpful..I found your video after completing a project we did having to do measurements on a crankshaft to make sure they were all within .0015"...I just wanted to know more about how this whole system works. I def just subbed your channel :) Thanks so much for posting
Thanks! I've seen many car engines apart but never an airplane engine in such details, very interesting. BTW, I though crank is cast first in a form to a rough shape and then machined to fine specs 1:30 ?
@@SethLakeDPEIn all seriousness thank you Seth. Part 2 helped me really get an understanding of the importance of oil level and how catastrophic debris could be. The Guam flight was a treat, it’s been a long time since passing through there. The coffee portion of the float plane episode was solid. All the best to you and yours!
