Re: model weight calculation
Wire spacers, when used on a F1D are considered to be part of the model
weight. As for O-rings, they are normally counted towards the rubber
weight. However, they can be cut off the motor as needed after the flight
to meet a maximum motor weight.
I would personally define anything that stays affixed to the model as part
of the model weight and anything that is not left on the model when the
rubber is removed as part of the rubber weight. I would think the tubbing
sleeves would fall into the same category as o-rings because they help
handle the rubber. However, I could see an argument for calling them a
structural element since they are a mechanism for preventing the rubber
from bunching at the hooks.
It will be interesting to hear what the list has to say because if tubing
sleeves are ruled a rubber control mechanism then they would be illegal for
Ministick, A-6 and LPP.
Nicholas Ray
On Sun, Dec 11, 2011 at 10:07 PM, Segundo Zarate
<segundo.zarate_at_gmail.com>wrote:
> **
>
>
> Clearly the "O" rings and sleeves do not contribute to the energy from
> the wound rubber and should be therefore be part of the model dry
> weight IMO. However in P-30 and other outdoor events the rubber lube
> is part of the maximum allowed motor weight (?).
>
> Ding Zarate
>
>
> On 12/11/11, Warthodson_at_aol.com <Warthodson_at_aol.com> wrote:
> >
> > When a model classification has a minimum weight limitation can devices
> that
> > are attached to the rubber motor but do not provide any actual power
> such as
> > "O" rings that are used to connect the motor to the prop hook or rear
> hook
> > be included in the models total weight? This question would also apply to
> > devices such as "tubes" or short pieces of plastic straws that are slid
> over
> > the motor to prevent the motor from bunching up at the front or rear
> hook. I
> > know this has been discussed before but I don't recall the consensus.
> > If they can be counted in the total weight, can identical "O" rings be
> used
> > for weight purposes or do they need to be cut off the motor & weighed?
> > Gary Hodson
> >
>
> --
> *Long live Free Flight!*
> *
> *
> *Ding Zarate*
>
>
>
Received on Sun Dec 11 2011 - 19:27:01 CET
This archive was generated by Yannick on Sat Dec 14 2019 - 19:13:46 CET