[AT] Thanks!

[charliehill]

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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