![]() |
When I purchased my Midget Mustang in [marginally] flying condition, the baffles were the same way--didn't even touch the cowling. Not to worry, however, as the prior owner/builder opened up the aft side cowl cheeks at the firewall to provide better flow and "it completely solved the oil temperature issues."
Some people's children... |
..what A&P?
...this all looks like the kind of fine work I may have done when I first worked at a local maintenance shop. I was 15, and I thought I knew all about aircraft, ('cause my Dad built one!)
Of course the engineer should be looking at all this prior to the cowls going back on, but just saying that a LOT or work is not done by him/her. Often they simply say " clean that engine, touchup the paint, and put those baffles back on..." and walk away for the rest of the day. |
Some times when i think my work isnt perfect I take a look on the Certified planes at the hangar and always feel beter, it is very noticiable tha quantity of cessnas and pipers that have deficient baffle installations, but all that airplanes dont have complete cil by cil engine analyzers so they dont know that is bad, and the most important is they never have a problem in 20-30-40 years, so as a friend told me some time. "I only believe in God and Lycoming":)
|
I know this is obvious to you guys, but for those of us that haven't been in the guts of cowl can you clarify further the proper install details. I think I get the idea but it would be good to have the specifics. I had assumed that the baffle material was just flat material. I'm now getting the feeling that is not the case and that the curvature should point inward, the higher pressure area then forming the seal against the cowl.
|
Quote:
|
I was introduced to the importance of baffle sealing when I witnessed the A&P who worked on my dad's 172 reach his arm through the cowl hatch doors and then through the cowl inlets to make sure the baffle seals were turned the right way (toward the airflow). Those baffle seals were much stiffer than what is shown in Dan's photos. They didn't appear to be factory original.
|
Yep
....and if you guys still getting to the baffling stage, cut it across the short width from the roll, you'll already have that 'built-in' curvature...installed curving inward.
Best, |
Quote:
I knew nothing about aircraft when I bought my first one the year after I graduated college. But I did every bit of work on every aircraft I've owned (under supervision when required). Sure, I paid more for the first few annuals or the first time I pulled a jug off than I would have to just pay someone else, but I figured i was paying for education and peace of mind. I still seek out and pay for that knowledge 23 years later. |
understanding
I understand after reading Walkman and Roy's post that there are a lot out there putting together these and other "E.H.B's" who may not have a good grip on this one. It reminded me this is why we have "FAR's" and "AC" like part 23 and 41-13. Some of these came at grate cost to people and property. I have always liked the idea of the 150% rule and find myself using it for a lot of other thing other than aircraft. Helps keep my cost down in the long run and things just seam to last longer. I don't have any good "J.P.G.'s" of a seal installation. But if any one dose it would be nice to post them with a short how you did it.
Yours as always R.E.A. III #80888 |
Quote:
Here is a diagram I found on the net: ![]() |
| All times are GMT -6. The time now is 05:12 AM. |