Re: Ministick rubber question:

From: Mark <f1diddler_at_yahoo.com>
Date: Wed, 23 Jan 2008 03:35:20 -0000

--- In Indoor_Construction_at_yahoogroups.com, "scott_and_sheri"
<hansesc_at_...> wrote:
>
> Hello,
> My question is this: What
> should I start with for rubber size? Width and lenght? and, is 1.2
> grams too heavy to fly OK?
> Any ideas would be great.
> Thanks,
> Scott

1.2 grams is about 2.8 X the minimum weight allowed for AMA
competition, (.423g) but nothing says you can't have loads of fun and
good training with a heavier model. It should fly fine, but much
faster than a "competitive weight" model. I would start with
about .036 X .042 rubber, and see if it can fly level (no climb and no
sink) at about 50% of maximum turns of a 9 or 10" motor. Then increase
turns in increments to climb just under the ceiling. This assumes the
model is equally robust in all parts. If your prop (or motorstick) is
relatively light, there may be a upper limit to the cross section of
rubber you can use and still have a controlled launch. Maximum
duration rubber weight will probably be somewhere between 85 and 110%
of model weight. Try longer motors until it reduces duration.
Mark F1diddler
Received on Tue Jan 22 2008 - 19:35:23 CET