[AT] Thanks!

[charliehill]

Steve O,  I used to work for a logging company.  Their mechanic was one of 
the best I've ever seen but having quit school at a very young age was 
limited to what he could observe and learn by doing.  One day he was under a 
piece of equipment, in an awkward position doing a something greasy and 
awkward.   Two guys that ran a little small time pulp wood outfit came in 
with the drive shaft out of their only pulpwood truck.  It was a true 
Marcell Ledbetter type truck.  They had asked to use the vice and some tools 
to get the cross out of the shaft.

They were over there pecking away as hard as they could swing a 4# or so 
hammer.  Plink, plink, plink..........plink, on and on for several minutes. 
I was standing by the piece of equipment and heard Bill mumbling about the 
noise.  All of a sudden Bill's creeper came flying out from under the 
equipment.  He  jumped up, hurriedly walked over to the fellows, gave them a 
sort of a shove with his arm as he said,   "GET OUT OF THE WAY, WHAT YOU 
FELLERS NEED IS A BIGGER #$%&^%^&%$ HAMMER".  Then the took the short 
handled 10 #  or so hammer he had in his other hand and a drift pin and hit 
the cross one good lick.  It fell on the floor.  He slid back under the 
piece of equipment without another word and went back to work.

This guy had forarms like Popeye.  I've seen him swing a 16 lb hammer for 
what seemed like hours with someone holding a big drift pin for him with a 
huge set of channel lock pliers.
Charlie


----- Original Message ----- 
From: "Stephen Offiler" <soffiler at gmail.com>
To: "Antique tractor email discussion group" <at at lists.antique-tractor.com>
Sent: Friday, October 09, 2009 9:10 AM
Subject: Re: [AT] Thanks!


I gotta think that one over but I think we're talking transfer of
momentum  here, which is just mass x velocity (not velocity squared)
so mass takes on far more importance.  Thanks for the reminder guys.

SO


On Fri, Oct 9, 2009 at 8:43 AM, charliehill <charliehill at embarqmail.com> 
wrote:
> Steve, I'm glad you posted that reply because I can only back up what I'm
> about to say from observation over a career of working around heavy
> equipment. You can take an 8 lb hammer, put it on a handle 10 feet long
> and let a gorilla swing it until the cows come home and it will never 
> knock
> the pin out of that D-9 or the boom pin out of a big excavator. A 16
> pounder with a good man on the other end will knock it out. I don't
> remember the math or physics nor will I attempt to explain why but that's
> the way it works. The small hammer will bounce off without transfering the
> mass to the pin.
>
>
> ----- Original Message -----
> From: "Steve Sewell" <sewell at ohio.edu>
> To: "Antique tractor email discussion group" 
> <at at lists.antique-tractor.com>
> Sent: Friday, October 09, 2009 8:16 AM
> Subject: Re: [AT] Thanks!
>
>
>>
>>
>> --On Friday, October 09, 2009 7:20 AM -0400 Stephen Offiler
>> <soffiler at gmail.com> wrote:
>>
>>> That would be my solution. I don't have anything bigger than 8# and
>>> haven't found anything yet that I'd want it for. Kinetic energy is
>>> 0.5 x mass x velocity squared. It's all about the speed, folks. I
>>> can accelerate the 8# a lot better than I could hope to do a 16#.
>>>
>>> Steve O.
>>>
>> Steve O. : I understand the engineer in you about kinetic energy. I also
>> know you well enough that we have around the same mass and energy of
>> swing.
>> The former Cat, dealer mechanic in me knows we can swing that 16# sledge.
>> I
>> have the bad back to prove it. )-:
>> A D-9 track master pin won't ever get up enough energy to laugh at an 8 #
>> hammer. But I have taken many out with a 16# with a helper holding the
>> B&O.
>> Of course it that's me twice as many blows as someone twice my size. (-;
>>
>> Note. A B&O is a form of a sledge hammer. Same size handle. Head is 
>> around
>> a foot long on each side, around 2" in diameter. About the same size as a
>> track master pin. Called a B&O because it was used to help drive railroad
>> track pins. Set the B&O on the in and drive it with the sledge.
>>
>> -steve
>>
>> Steve Sewell
>> Albany, Ohio USA
>> sewell at ohio.edu
>> sewell at atis.net
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>
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