[CAUT] tuning test blow jig?

[Keith Roberts]

Ahhh the picky engineer in me. I subtracted 12 from 18 and saw that you
hadn't left any room to grab the rod. Of course anything that is repeated
should have something to make it easier than having to guess at an 1/8 inch
and hover.
Myself, I would weigh the rod and be dropping it from exactly 6 inches to
start, just so I knew....
k
On Sun, Jan 16, 2011 at 12:00 PM, Ed Sutton <ed440 at mindspring.com> wrote:

>  No pin/pull set up was indicated.
> The pipe is 6 inches longer than the rod weight.
> Hold the rod inside and just at the top of the pipe, so it will drop 6
> inches (and just a tiny bit more).
> Position the tip of the pipe at the top of the target key, 1/8" or less
> above the key.
> Let go of the rod for a controlled fall of about 6 1/2" inside the pipe.
> Cut the pipe 1/2" inch shorter if you're really worried.
> Make sure the cushion is on the bottom of the rod so it will protect the
> key.
> It's very simple. No need for anything more.
>
> Ed Sutton
>
>
> ----- Original Message -----
> *From:* Keith Roberts <keithspiano at gmail.com>
> *To:* Ed Sutton <ed440 at mindspring.com> ; caut at ptg.org
> *Sent:* Sunday, January 16, 2011 2:41 PM
> *Subject:* Re: [CAUT] tuning test blow jig?
>
> Make the PVC pipe one inch shorter and put a one inch mark on the steel
> rod. Then you can drop the rod without making a pin/pull drop set up. Taping
> a hammer shank to the PVC will give the key height so you don't have to
> hover....
> just some thoughts
> Keith
>
> On Sun, Jan 16, 2011 at 10:33 AM, Ed Sutton <ed440 at mindspring.com> wrote:
>
>> If you are giving an official exam, you need to get the official thumper.
>>
>> If you want something to approximate the exam test blow, get a piece of
>> 3/8" steel rod, 12" long, and a piece 5/8" inner diameter pvc pipe 18" long.
>> Glue some cloth punchings on the end of the rod to protect the keytops.
>> With this you can control and drop a half pound weight 6 inches for a test
>> blow.
>>
>> Repeat: THIS IS NOT AN OFFICIAL THUMPER, but it will give you a good
>> estimate of a test blow for training purposes and self-testing.
>>
>> Ed Sutton
>>
>> ----- Original Message ----- From: "John Minor" <jminor at illinois.edu>
>> To: <caut at ptg.org>
>> Sent: Friday, January 14, 2011 3:24 PM
>> Subject: [CAUT] tuning test blow jig?
>>
>>
>> Does anyone know where I can get the specs to make a tuning test blow jig?
>>>
>>> Thanks!
>>>
>>> John Minor
>>> University of Illinois
>>>
>>
>>
>
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