About that "dial-out"

[mhorowit]

Norm - a normal person would have learned this early in life, but I'd never did and always managed to piss people off; so - how does one (without offering offence) ask the engine guy if he checked the things you suggested (below)? - Mike


[QUOTE]Originally posted by stormman
[B]Mike
You never said if was a taper crank or a flanged crank.
Taper runout is .008> SOOO .009 ant shit
flanged .005 on the outer edge . did you check the flange with a mike to see if it was indeed round? one little mishap and one small ding make a big difference on a dial indicator.
Try running out the face making sure to hold the end play back.
Hate to say this but someone may be looking for a job
Naa , i didn't hate saying that at all!

[stormman]

My folks didn't call me Norm because i was normal!
A normal person is someone you don't know or someone you think is normal untill you get yo know them. something like an expert, " a guy you think knows more than you" or you hope does anyway
If it flew i sure would get a second or third opinion. On second thought being me and thinking of myself as being a God i wouldn't sweat the small stuff. I already told you my thoughts on the BIG stuff.
I suppose you did this check with the sparkplugs out? Hell with loose main bearings you can get .004 on a perfect crank.
Please don't go out on the line and start dialing cranks or half of your airport might be grounded.
If he's a old small guy just ask him , if he is young and strong bring several strong friends or hire a guy doing a drug deal on the corner to go with you.
It's your $$ but some of the best runners i have seen have been Worn out
They say its better to be cautious a thousand times than to die once " but you might miss out on a thousand fun times.
At our age how many do you have left?

" Always leave yourself a way out" BOB HOOVER
You think he always flew Perfect machine's ? Not hardly! and we all know for a fact he crashed a few Perfectly good ones.

So go dance and know where the backdoor is located or stay on the porch
BTW the reason i have a Tcraft and not a caravan is $$$ Plain and simple$$$$$$$.
ramble ramble ramble

[mhorowit]

But I want to be able to play with the grandkids when they make their appearance!

Not all this stuff is up to me. My A&P tells the story about doing an annual on a Champ. He sees a splice on a strut and looks for documentation. None - so he says he can't complete the annual without some assurance it was done properly (or something to that effect). Same thing with this engine - He had reason to take the measurement, found it out of specs and a red flag went up. That is as it should be. I just want to assure myself I'm not being sold a gold-plated caribiner, or the engine is opened based on a mistaken reading.

What difference would it make if the plugs were in/out?

- Mike

[stormman]

if the crank bearings are loose the compression might push the crank off to one side

[mhorowit]

Just a second.
Why am I even fretting over this measurement?
Someone mentioned it earlier, and AC 43.13 bears it out:
if the engine is forced to stop suddenly, you open it up. Period.
That's it. On to more exciting stuff, like the difference between a spar and a strut - Mike

[stormman]

Suddenly?
Thats a T28 doing a carrier landing with the gear up!
A nose over in the dirt! thats just deceleration
She ant no dog dern merlin, none of them dern bolt on counerweight thingies on that A65
Now you just smoke your money anyways u like Mike.
Me? im outa here , i's gots cow to milk

Education is the best provision for old age

[alwaysoar]

dial out

Mike, The sad fact of airplane-ownership life is that you gotta bite a lot of bullets. Check the gaps in my gum line for proof of that. I think the strut splice is going a bit far because it can be inspected easily, but the engine has to come apart. Mine is now in pieces all over the hangar bench and I'm starting to buy parts--ouch, there goes more enamel! But when it's put back together I'll know. I've had three IA's give me their 2-cents, and I have no reluctance to say I want another opinion. You can tear it apart yourself, then send the parts out for inspection yourself.

Ed @BTV VT
TF 527

[NY86]

Mike:

this thread is so long now I've forgotten the original question. For that mater, maybe all the answers have already bee given, too. That said, here's my $.02

There is nothing that has the force of law that makes you have to tear the engine down, as long as you're operating under part 91. (How many Part 135 T-craft are out there?) There would have to be an AD or a new paragraph in the regs. AC (ADVISORY) 43-13 is just that, advisory. Of course, if you choose to ignore "advise" from the FAA you may have another kettle of fish to deal with down the line.

You didn't say what kind of prop you didn't break. If it was wood, forget the teardown, unless you're now concerned about prior damage. No way to damage an engine with a wood prop and still have a recognizable wood prop. Also, you didn't say whether the crank was flanged or not. If not, try a different (known good) flange.

Continental or Lycoming used to define "sudden stopage" as the engine going from making power to stopped in less than 1 (IIRC) revolution. This is not possible to do with out a lot of prop damage. If you don't have a lot of prop damage, you probably didn't have a sudden stopage.

JMO

[stormman]

MIKE IS RIGHT
GOD bless you my son

[stormman]

Dam Ron
WHY didn't i think of that? Now that's sudden stopage.
That A65 has dam near torn my fingers off 100s of times before i shelled out for an impulse mag. ALL you guys out there DO NOT USE GLOVES and don't ask how i know that.

Nice Dip stick Ron! No not yours , the one you mailed me in the big box, Had me fooled on what it was for a spell. THANK YOU again

[Carl Ellis]

Norm -

If I have gloves I like to use them whenever I prop someone, it's easier on my hands (I drive a keyboard for a living).

What was your bad experience?

- Carl -

[stormman]

When it kicks back it straighens your fingers out and you let go. In my case it caught on the folds of the glove and pulled me off balance. I hear it and catch on the gloves if it starts but i never had the pleasure of that, and don' t what to either.
Anyone else want to jump in here on this?
Don't want friends of ours hurt by an old glove, maybe im the only one its happened to.

[Dick Smith]

Glove concern

A wet glove has been known to stick to a prop at temperatures below freezing...like a kid's tongue on a cold flagpole...only with the possibility of more serious consequence. Dick

[jgerard]

I have a technique of starting the plane from behind the prop. I push up on the blade (turning it backwards a few degrees) to kind of bounce it off the compression and get a full swing before the mag fires. Seems to work for me. I don't use gloves either.

Jason
N43643