[NSRCA-discussion] Weight History

[John Fuqua]

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

 

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