The mass per unit length changes as you use the motor just like the width changes. I calculate the number when the motor is first made before winding. I don't know how others do it.
----- Original Message -----
From: jabiruchick
To: Indoor_Construction_at_yahoogroups.com
Sent: Tuesday, April 27, 2010 6:07 PM
Subject: [Indoor_Construction] Re: A-6 Motors
Well I can imagine that the rubber stretches and expands and so if you strip off a length .050" wide and then wind it a few times, it wouldn't quite be the same width anymore, so mass would be a better way to express the amount of rubber. I was just looking at plans for the Wart going, How the he** do I make a motor .91 grams but keep it 18" long without restripping it (can't imagine that working very well...)? The grams-per-inch trial & error idea makes more sense. I've used a rubber stripper only a few times-- what a neat toy to have. (Any up for door prizes this year at USIC??)
KT
--- In Indoor_Construction_at_yahoogroups.com, "Bill Gowen" <wdgowen_at_...> wrote:
>
> I'm new to trying to think in grams per inch but I basically strip to the width that I think is close to what I need. Then I figure the grams per inch and adjust the cut as necessary.
>
> ----- Original Message -----
> From: jabiruchick
> To: Indoor_Construction_at_yahoogroups.com
> Sent: Tuesday, April 27, 2010 2:40 PM
> Subject: [Indoor_Construction] Re: A-6 Motors
>
>
>
> Cool-- thanks!
>
> Another newbie question. I noticed lots of people are posting their motor sizes using a length and weight in grams as you did below. How do you cut a motor to a gram size, as opposed to setting a stripper to a certain width?
>
> KT
>
> --- In Indoor_Construction_at_yahoogroups.com, "Bill Gowen" <wdgowen_at_> wrote:
> >
> > It will depend on your prop and the weight of your model. I use about 18" x 1 gram which is in the neighborhood of .050".
> >
> > ----- Original Message -----
> > From: jabiruchick
> > To: Indoor_Construction_at_yahoogroups.com
> > Sent: Tuesday, April 27, 2010 12:01 PM
> > Subject: [Indoor_Construction] A-6 Motors
> >
> >
> >
> > Hi Guys,
> >
> > I'm ordering some supplies for the USIC and wondering about what size rubber I should start with for A-6. I built Gary Hodson's Wart with the lightest wood I have and Gampi tissue, but have no idea what it weighs because I don't have a gram scale. It's my first try at A-6 and my first try at any true duration models for about 15 years, since I was a kid fooling around with Parlor Mites & EZBs.
> >
> > Any suggestions for a good beginning range of motor thicknesses in inches?
> >
> > Thanks!
> > Katie
> >
>
Received on Tue Apr 27 2010 - 15:23:59 CEST
This archive was generated by Yannick on Sat Dec 14 2019 - 19:13:46 CET