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Caption This!

Caption This! is a place for engineers to test their wit. Each week the CR4 team will post an interesting or amusing engineering picture. We're looking for your best captions in the comments below.
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Caption This for 6/22/2018

Posted June 22, 2018 4:45 PM by MaggieMc

Check out this week's image.

Thanks to energyconversion. As usual, we're always looking for submissions!

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#1

Re: Caption This for 6/22/2018

06/22/2018 4:52 PM

"Dang, I wish this thing had a starter!"

(I used to own an Aeronca Champ that I had to prop start - no starter. I had nightmares like this!)

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#2

Re: Caption This for 6/22/2018

06/22/2018 5:20 PM

The maintenance schedule says to polish the prop every 100 hours and I'll be darned if I let my warranty get voided!

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#3

Re: Caption This for 6/22/2018

06/22/2018 8:22 PM

Q. Why is there a fan on the front of the airplane?

A. It's to keep the pilot cool. When it stops, the pilot starts to sweat!

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#4

Re: Caption This for 6/22/2018

06/22/2018 8:35 PM

I think the pilot has reached a turning point in his life, and he's reaching out to get things right.

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#5

Re: Caption This for 6/22/2018

06/22/2018 9:48 PM

Let's see . . . righty-tighty . . . . leftie-loosie . . . .

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#6

Re: Caption This for 6/22/2018

06/22/2018 10:38 PM

Going out for a spin!

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#7

Re: Caption This for 6/22/2018

06/22/2018 10:41 PM

Here we go loop-t-loop!

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#8

Re: Caption This for 6/22/2018

06/22/2018 10:55 PM

Bob: Hey Dave, she quit on me - over.

Dave: Well that sucks - over.

Bob: Got any ideas - over.

Dave: Well, climb out on tha gear an’ see if you can get ‘er goin again, and I’ll get above ya and take your pitcher - over.

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#9

Re: Caption This for 6/22/2018

06/22/2018 11:04 PM

High hopes for a new prop-position!

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#10

Re: Caption This for 6/22/2018

06/22/2018 11:23 PM

Oh, no! I've got to wind up the rubber band!

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#11

Re: Caption This for 6/22/2018

06/22/2018 11:49 PM

They talk about a "wing & a prayer", but I never expected that I'd have to get a "buzz on" just to keep going----Guess it's time for a Bud!---- Beam me up Scotty!! Hmm.....Where's Clark Kent when you need him?

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#12

Re: Caption This for 6/22/2018

06/22/2018 11:52 PM

That time when even the most committed atheist prays!

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#13

Re: Caption This for 6/22/2018

06/23/2018 12:04 AM

A man with a handful of prop-lames!!

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#14

Re: Caption This for 6/22/2018

06/23/2018 12:51 AM

Hey, Joe... The part number is... Are you sure it's on the recall list?

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#15

Re: Caption This for 6/22/2018

06/23/2018 1:33 AM

Boss.. you want I check your dip stick too?

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#16

Re: Caption This for 6/22/2018

06/23/2018 4:20 AM

Uber-Aero . . . Enjoy the Benefits of Low Cost, Stress Free, Autonomous Flights

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#17

Re: Caption This for 6/22/2018

06/23/2018 7:43 AM

Blade-runner!

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#31
In reply to #17

Re: Caption This for 6/22/2018

06/23/2018 11:43 PM

Blade stop runner?

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#18

Re: Caption This for 6/22/2018

06/23/2018 8:08 AM

Ok, Joe.. Now I know it's on the recall list... But, I'm I'm kinda in the middle of something right now.

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#19

Re: Caption This for 6/22/2018

06/23/2018 8:16 AM

Prelude to a Bob Newhart CD..."The Aviator Instructor".......

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#20

Re: Caption This for 6/22/2018

06/23/2018 10:14 AM

"It's OK, they did this in the 1930's .... oil top up above the Pacific using a briefcase ... but heck .... where are the other engines?"

http://tlf.dlr.det.nsw.edu.au/learningobjects/Content/R11335/object/r4968.html

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#33
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Re: Caption This for 6/22/2018

06/25/2018 8:40 AM

THAT is impressive! Wow!

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#21

Re: Caption This for 6/22/2018

06/23/2018 12:39 PM

Those cheap spark plugs said they were lifetime guaranteed - but they didn't say how long my lifetime would be.

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#22

Re: Caption This for 6/22/2018

06/23/2018 3:52 PM

High Altitude Manicure

Dave shortens his right index fingernail by falling for that old "propeller in the strobe light" gag.

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#24
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Re: Caption This for 6/22/2018

06/23/2018 4:17 PM

Ornithology and Aerial Photography

Diane swears no ill intent by driving her buzzard triggered photoflash stream off of the machine gun sync signal. She claims raising Dave's life insurance coverage just prior was purely circumstantial.

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#28
In reply to #22

Re: Caption This for 6/22/2018

06/23/2018 4:48 PM

BLDC Conversion Upgrade

Dave realizes that brushless dc conversion of his WWII gas engine is a little too stealthy so he records a real gas engine sound to play from now on when the prop is turning.

Diane gets rich on her utube "Flying with the Birds" videos. Dave honored her request for a "deadman's switch" style mute button. The most popular videos by far are the ones where Diane accidentally releases the mute switch.

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#23

Re: Caption This for 6/22/2018

06/23/2018 4:03 PM

Hey Joe... I think I will need a replacement for that recalled part. See if they'll deliver it airmail.

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#25

Re: Caption This for 6/22/2018

06/23/2018 4:31 PM

Well Joe.... If they won't airmail it, see if they got it in stock, so I can pick it up there. I'll need it right away.

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#26

Re: Caption This for 6/22/2018

06/23/2018 4:33 PM

And Joe... Go over there and pay for it, and have it ready. I just want to swoop in and grab it.

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#27

Re: Caption This for 6/22/2018

06/23/2018 4:46 PM

Oh... By the way Joe, how far away is that place as the crow flies? I Hope they don't close before I get there. I can't wait until tomorrow. This is a one-shot deal. It's now or never.

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#29

Re: Caption This for 6/22/2018

06/23/2018 5:38 PM

Now we'll see if this certificate for the bargain battery is any good. It says "If battery fails to start engine, place this certificate on top of battery and try again". Here goes. Hope the wind doesn't blow it off!

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#30

Re: Caption This for 6/22/2018

06/23/2018 7:45 PM

Suddenly, it dawned on him that a "pre-flight check" really would have been much easier.

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#32

Re: Caption This for 6/22/2018

06/25/2018 6:24 AM

Some tips for hand-propping a Piper Cub

By Lynn Towns

The preparation of the engine for starting is a very critical part of making propping easier (i.e., starting immediately). The method will vary with the ambient temperature, and whether the engine is cold or warm. I also do this on planes with starters to make it easier on the starter and battery.

If the engine is cold, it should be pulled through until the carburetor sounds "squishy." In warmer weather, I just pull it through about 8 blades (compression strokes). In colder weather, I also rock the prop back and forth several times between compression strokes before going on to the next compression stroke. Do this a minimum of 4 compression strokes (on 4 cylinder engines) to allow fuel into all of the induction tubes. If there is fuel dripping from the carburetor onto the ground, the engine has been pulled through enough.

When the temperature is above 60 degrees, I do not prime the engine. In colder temperatures, I prime before pulling the prop through as follows:

40-55 degrees, 1 shot of primer
35-50 degrees, 2 shots of primer
15-30 degrees, 3 shots of primer

These temperatures are approximate. Each engine seems to require slight variation.

____________________________________________________________________

Merle: "Hey Gladys: what temperature you got there?"

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#34

Re: Caption This for 6/22/2018

06/25/2018 9:43 AM

Now, When I yell contact....

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#35

Re: Caption This for 6/22/2018

06/25/2018 1:00 PM

Hey Charlie, hand me that bucket of prop wash.

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#36
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Re: Caption This for 6/22/2018

06/25/2018 1:49 PM

And then get me 500 yards of flight line.

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#37

Re: Caption This for 6/22/2018

06/26/2018 4:35 PM

If there's time to LEAN then there's time to CLEAN.

Jack took that saying a bit too literally!

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#38

Re: Caption This for 6/22/2018

06/27/2018 3:16 AM

Hang on Sean, oi tink oi can see where it's gettin' snagged.

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#39

Re: Caption This for 6/22/2018

06/27/2018 9:32 AM

"Damn it! I've dropped the crank handle!"

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#40

Re: Caption This for 6/22/2018

06/27/2018 9:34 AM

"Damn it! Where on earth are the jump leads when you need them?"

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#41

Re: Caption This for 6/22/2018

06/27/2018 9:44 AM

This plane is the newest model. It's equipped with Otto start.

Meet Otto.

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#42

Re: Caption This for 6/22/2018

07/12/2018 1:46 PM

Feathering the prop

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