What's on your bench?

[MustangMike]

My 440 kit saw came with dual port 100% open muffler and no spark arrest. I keep finding myself cutting in neighborhoods, so I picked up an oem 460 muffler. Has internal deflector,the small hole with slit and spark screen. Saw is a lot quieter, runs about the same because I deleted base gasket as well. Squish from .0450 to .0200.

Sharpie marks are where I was thinking about adding a slit and opening up exit port.

View attachment 320834
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Open that hole more vertically so that the deflector still does it's job. May also help with keeping the noise down or "deflected" forward. IMO, my 2- 1/4" holes in the front cover are quieter than one large hole or slot, and less prone to letting debris in (even though I don't screen it).

All my saws are kinda loud, but the only time I got a complaint was when I was milling in my back lot with my Big Bore MOFO 660. That thing is really loud, and milling goes on for a bit! The neighbor said something about it, but was OK with it. I explained to him that you need a powerful saw for milling, and I don't run it very often.

I think people expect chainsaws to make noise, and the old saws (like a Stihl 020) were VERY loud! Most of mine are just "medium" loud!

 

[TALLGUY]

I think someone ran a dull chain with no bar oil a little too long. Complaining about throwing chain. I suppose when you can't get it adjusted...
I was able to save the adjuster had to replace the little square piece at the end of the screw. Price sticker was still mint on the top cover.

Sent from my SM-G950U using Tapatalk

 

[slackinoff]

@MustangMike - I like that idea better than my sharpie marks, thanks!

 

[av8or3]

Annual inspection on a Piper Lance. I found a crack on the crankcase right on top of the #1 bearing journal. The first pic is what you see when you clean it up and then apply heat to the area. The oil in the crack bleeds out with enough heat. You must nail it down with an approved NDT method before you can tell the customer he has a problem. So, the following pics are what it looks using a dye penetrant under a black light.
If you were wondering , that’s a $60,000 crack. His case is not good for a core so that drives the replacement cost up. That is approx how much it will cost to replace this engine. Real bummer.
I guess if I had to choose how/when to find out about this I would choose to find it on the ground.

 

[Mastermind]

If you were wondering , that’s a $60,000 crack.

Dammit

 

[Partner]

I'm welding it for half the price ;-)

 

[av8or3]

I'm welding it for half the price ;-)

I’m sure my customer would consider it were it legal.
Although, I would not. I have seen cases that were repaired (welded). That is something only the engines manufacturer can do I think although I believe the location of this damage precludes any type of “repair”.

 

[Partner]

I am aware that aviation exchanges "good" for "better" regulations and manufacturer's guidelines

 

[timg]

I’m sure my customer would consider it were it legal.
Although, I would not. I have seen cases that were repaired (welded). That is something only the engines manufacturer can do I think although I believe the location of this damage precludes any type of “repair”.

Nothing to do with the crack Jim.
But, Is a combustion gas leak check mandatory as an aviation engine inspection. And if so what is the interval based on? Horsepower, hours? I'm assuming oil analysis is mandatory also with an engine inspection. Thx. timg

 

[JohnnyBlade]

Here she is. I fattened up the low side about 1/8 turn after this video and there is no more more of the bog on the dogs. She rips pretty good for putting a gasket back in. That .325 dont last long in that 3+ year old hickory. Stuff is petrified i tell ya! But it threw chips good for awhile, just keep a file by the fuel tank

 

[av8or3]

It’s time for that engine to move along anyway. Just looked ,4996.8 TT. Is coming up on its third overhaul. Engine has a 2000 hour TBO.

 

[Mastermind]

I’m sure my customer would consider it were it legal.
Although, I would not. I have seen cases that were repaired (welded). That is something only the engines manufacturer can do I think although I believe the location of this damage precludes any type of “repair”.

I suppose the prop is directly driven off the crankshaft?

 

[av8or3]

Nothing to do with the crack Jim.
But, Is a combustion gas leak check mandatory as an aviation engine inspection. And if so what is the interval based on? Horsepower, hours? I'm assuming oil analysis is mandatory also with an engine inspection. Thx. timg

Compression test is done annually , unless something warrants it before. We put 80psi in and measure what the cylinder will hold. Usually reads something like 74/80. That would be an ok number. His compressions are all good. Lycoming engines seem to retain good compression right to the end. Annual inspections are required of all aircraft. In addition to that , rental and flight school planes are required inspections &oil changes every 100 hours.
Oil analysis is optional.

 

[av8or3]

I suppose the prop is directly driven off the crankshaft?

Yes, it is on this engine.

 

[Mastermind]

Yes, it is on this engine.

Ever had a prop strike incident on it by chance?

 

[av8or3]

Yes, it is on this engine.

There are “geared” engines. They have this big bull gear that sits on top of the crankshaft. It allows the engine to spin up faster and develop more hp and torque while keeping the propellor blades from going supersonic. They don’t work good that fast. You can spot them without removing any cowling. They have a big hump down the middle of the engine cowl to accommodate that bull gear. Cessna 421 has them.

 

[av8or3]

Ever had a prop strike incident on it by chance?

It wasn’t logged if there was. Another thing. Logbooks must be kept on the engine, airframe and propeller. The books stay with the airplane, engine,prop. Repairs and maintenance are recorded there. An airplane without logbooks is worth half what it would be with them. Real important.

 

[Mastermind]

It wasn’t logged if there was. Another thing. Logbooks must be kept on the engine, airframe and propeller. The books stay with the airplane, engine,prop. Repairs and maintenance are recorded there. An airplane without logbooks is worth half what it would be with them. Real important.

Is this an unusual thing to see on that model? I'm just trying to make sense of the possibility of a 60K repair on a 90K airplane.

 

[RI Chevy]

It's a good find nonetheless.

 

[timg]

It's a good find nonetheless.

ABSOLUTELY!!