It would be easy to make one meter for all (indoor) classes. The
downside is that it would have to be long. I don't know the exact
numbers, but you could probably use say a 30 inch length of .015 inch
wire and this for EZB/F1D, all the way through PP. You would have to
keep track of the number of revolutions on the dial.
I admit a strain gauge with a digital readout would be cool. You could
put a digital counter on the winder, and feed all of it into a
computer and really know how you are winding. But the simple stuff
would probably be more reliable.
Marty Sasaki
On Tue, Sep 1, 2009 at 11:41 AM, jeffrey.hood<jhood_at_hmcon.com> wrote:
>
>
> I've been looking for years for someone who could put together the
> electronics for using a strain gauge... Load Cells are pretty cheap and more
> than adequate in accuracy, but getting someone who can put together the
> electronics to take the readout and put it on a display seems to be
> impossible... The mechanics for this would be simple to machine, and you
> would have -one- torquemeter for all classes... with much higher resolution
> than our current devices... (for the most part...)
>
> If -anyone- out there can -really- do this, or knows someone who can, I for
> one am very interested...
>
> JHl;cl
>
>>
>> hermann andresen wrote:
>>
>> > Had considered making a custom strain gage torque transducer.&nbs! p;
>> > Could automate torque/turns energy release with good accuracy. Much
>> > simpler & cheaper would be tying in to a cheap digital scale. Difficult
>> > to automate, but ...
>>
>> I have been giving some consideration to this, too, but have not yet
>> come with the optimal solution. Strain gages are one solution, but I
>> have heard that they give you hard times with drift on e.g. temperature.
>> Therefore I have also considered putting a magnet on a "conventional"
>> torsion bar meter, and reading the deflection with a hall sensor. That
>> way it would double with a mechanical readout. But then, you would have
>> all the mechanical problems of the torsion and moving parts... Actually,
>> what I would also like to measure, would be the pull from stretching the
>> motor, to get some sort of estimate for the total strain on the motor...
>>
>>
>>
>> -Tapio-
>>
>
>
--
Marty Sasaki
Arlington, MA, USA
http://www.martys-simple-things.com/
marty.sasaki_at_gmail.com
Received on Tue Sep 01 2009 - 19:19:36 CEST