Looking for a drawing...

[Larry Lyons]

Re: Looking for a drawing...

Yep one of my favorite calipers is a plastic one to measure U-Joints. Been using it for 15 years, not all that acurate but it gets me close enough for most of what I use it for. I do not use on the lathe or the surface grinder but for general banging around it was a great deal. And easy to read too, not all those little funny numbers with decimal points scattered randomly through them.
L

[Hank Jarrett]

Re: Looking for a drawing...

Even a plastic mic can be calibrated.........Just not to quite as tight a tolerance.....or as repeatably.....or for as long......or for different temperatures.....
AW FORGET IT! It's a TAYLORCRAFT! Most parts were built to plus or minus 1/4"! I have a plastic dial caliper that works fine for 90% of everything I ever need to measure. Half a thousandth isn't that tight a measure.
Hank

[freightpilot27]

Re: Looking for a drawing...

By the way, with the micrometer I used, with significant figures accounted for, it was .750" in diameter. We must have a LOT of Rocket Scientists here. Only one of us wouldn't notice the missing zero NEXT to the decimal point! ;-) I was only off by an order of magnitude!

Was the Micrometer calibrated within the last 12 months? otherwise its all a MOO POINT (like a cows opinion, it doesn't matter)

my mic is pink and made of plastic. it says "ages 3 and up" on it. think that will calibrate?
-bob

[O.Taylor]

Re: Looking for a drawing...

Hi Hank, I sent you a PM, Otis

[M Towsley]

Re: Looking for a drawing...

John,

Just messin' with you guys, exact is good. If you are successful I will be the first one banging on your door for them!!!

[NY86]

Re: Looking for a drawing...

Whatever happened to plain old 3/4 of an inch???

I should probably just let it go, but, 3/4" measured with a plastic AOPA ruler is fine if I'm trying to figure out what size box to ship it in, but if I'm gonna make one (the shaft, not the box) I need a more precise measurement.

Go buy a 3/4" bolt and measure it with a micrometer. It will not measure 3/4" (.750). For that matter, get one form an aircraft supply house and one from Ace hardware and they will not measure the same.

Hank: I think there's only one real Rocket Scientist here. The rest of us are lowly pretenders...

[Larry Lyons]

Re: Looking for a drawing...

I think he is dutch, take him as he means not as he says!
L

[M Towsley]

Re: Looking for a drawing...

Whatever happened to plain old 3/4 of an inch??? Sorry, non rocket scientist here.

[Hank Jarrett]

Re: Looking for a drawing...

This is all very entertaining, but if you look, my screw up was I said the 45 shafts were .075" diameter .049 wall with .250" cross hole. That is a BIG difference from .75, .750 OR .7500! You guys are looking at the wrong end of the number.
Hank

By the way, with the micrometer I used, with significant figures accounted for, it was .750" in diameter. We must have a LOT of Rocket Scientists here. Only one of us wouldn't notice the missing zero NEXT to the decimal point! ;-) I was only off by an order of magnitude!

[Bird]

Re: Looking for a drawing...

I'm getting a headache again lol but after getting hit by lightning 10 times it doesn't take much nowadays

[NY86]

Re: Looking for a drawing...

You are correct, however, if you specify .7500 you are implying that it is not as big as .7501 and not as small as .7499 whereas if you specify .75 you are only implying it is less than .76 and more than .74. If someone has a yoke that is bored .7501 and I give him a shaft that is .7529, someone with a tape measure would call them both .75, but it wouldn't fit.

[Miguel]

Re: Looking for a drawing...

May be, I am not very sure. I believe that .75", .750", .7500", or .75000" are all the same 3/4".-
Miguel.-

[NY86]

Re: Looking for a drawing...

Hank:
I believe that .750" and .75" is same chose. Or John are speaking of other system?
Miguel.-

.75 is really between .745 and .755 whereas .750 is between .7495 and .7505

It's a rocket scientist joke....

[Miguel]

Re: Looking for a drawing...

Hank:
I believe that .750" and .75" is same chose. Or John are speaking of other system?
Miguel.-

[Hank Jarrett]

Re: Looking for a drawing...

Sorry, .750" diameter. I checked the other damaged shafts at the hangar as well as the one Banjo there and all were the same, .750" diameter tube, .250" holes and .049" wall tube, EXCEPT the 41 welded clover wheels and shafts. The holes were the same but the OD was .770" and the shaft and wheel is a welded assembly. I couldn't get access without taking everything apart to get the tube wall thickness.
Hank