Re: Motor weight, size density?

From: Nick Ray <lasray_at_gmail.com>
Date: Wed, 2 Jun 2010 13:57:59 -0400

I have been using inches per milligram of untied loop. I think because knots
are not consistent, and increase in relative mass as the rubber size
increases the untied loop is the way to go. The reason I started using
inches is because I didn't have meter stick handy. I would say meters are
probably better if we wanted to create universal system. I don't think using
grams or milligrams matters much as its just move thing decimal places
around. It would be ideal to use as many significant digits as possible in
order to get a more precise result.
NIck

On Wed, Jun 2, 2010 at 1:07 PM, Fred or Judy Rash <frash_at_chartertn.net>wrote:

>
>
> Bill,
>
> Thanks for all your help on many items.
>
> I think that everyone will work in grams. Probably we should eliminate
> ounces from AMA, NFFS, etc Indoor (and maybe Outdoor) rules whenever
> possible.
>
> The unit for length is harder. Most of Europe and the rest of the world
> would argue for meters and probably we should also. I believe that most use
> g/m of the untied strip. I think in grams naturally from a lot of chemistry
> lab time as well as model building time, but do not automatically think in
> meters. I can live with either inches or meters. If I use inches, I always
> use decimal inches. I never write down a mixed fraction. If I try CAD which
> I do occasionally, I never use mixed fractions there either.
>
> I would even be so extreme as to argue that our schools should teach
> decimal fractions before mixed fractions. This should start a strong
> off-topic thread. <GRIN>
>
> Fred Rash
>
> On 6/2/2010 12:41 PM, olbill61 wrote:
>
>
>
> I'm wondering if there is any way of describing motor weight per unit
> length that is more prevalent than others. The way I started out is by
> dividing total weight of a finished motor in grams by the motor length in
> inches. I think Kang has started using grams per inch for untied strip. I
> think Leo is using grams per meter.
>
> Can any others who have switched to weight per unit length describe how
> they do it? I'm early in the process of doing it this way and could switch
> to a different system without much trouble. I'd like to hear from English
> and European fliers also.
>
>
>
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>
Received on Wed Jun 02 2010 - 10:58:04 CEST