[NSRCA-discussion] Weight History

[Keith Hoard]

“Equality for all Pattern planes!!” regardless of their race, nationality, gender identification or power source, I say!!

Sent from my Windows 10 phone

From: Ronald Van Putte via NSRCA-discussion<mailto:nsrca-discussion at lists.nsrca.org>
Sent: Friday, January 27, 2017 13:00
To: General pattern discussion<mailto:nsrca-discussion at lists.nsrca.org>
Subject: Re: [NSRCA-discussion] Weight History

That is very interesting.

However, I still fail to see the logic that allows glow-powered airplanes to be weighed without fuel, but requires electric-powered airplanes to be weighed with batteries.

I think we should have a rule that both glow-powered and electric-powered airplanes should be weighed in their takeoff configuration.

Ron Van Putte

On Jan 27, 2017, at 12:47 PM, John Fuqua via NSRCA-discussion <nsrca-discussion at lists.nsrca.org<mailto:nsrca-discussion at lists.nsrca.org>> wrote:

It is interesting to look back at the history of weight and displacement limits.

Up until 1966 there were no engine displacement limits and allowable weight was 15 pounds.

In 1966 a .61 cubic inch displacement limit was imposed with an allowable weight of 15 pounds.   Of course nobody could weigh that much and have any performance given the displacement limit.

In 1980 a weight limit of 5 kg was implemented but again nobody wanted to be that heavy because of power limitation.

In 1984 the limit for 4 strokes was raised to 1.20 cu inches and airplanes started to change.

In 1992 a noise limit was imposed.

In 1994 engine displacement limits were eliminated and 4 strokes ruled until the electric era.

In 1996 the 2 meter rule was introduced.

Each change brought about airplane changes.   Bigger, more power but still at 5 kg.

So for 37 years (1980 until now)  the weight limit has been the same.    Seems to me like we adapted pretty well over the years.



John Fuqua
cell 850-974-6655

_______________________________________________
NSRCA-discussion mailing list
NSRCA-discussion at lists.nsrca.org<mailto:NSRCA-discussion at lists.nsrca.org>
http://lists.nsrca.org/mailman/listinfo/nsrca-discussion

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.nsrca.org/pipermail/nsrca-discussion/attachments/20170127/463c06da/attachment.html>