----[Please read http://ercoupers.com/disclaimer.htm before following any
advice in this forum.]----
Bill,

The CD model only exists because ERCO felt the handling of the D model 
was too fast on approach.   (From Ercoupe Information Letter No. 1, Jan 
1, 1956 "In the opinion of the factory, this limitation (9 degree up 
limit) seriously affected the landing qualities of the Ercoupe.) My 
feeling is if the company that manufactures it does not like it, it 
might be worth avoiding.

That said, the only difference between a CD and a D is the up elevator 
travel and the legal max gross.  The up elevator has to be limited to 
keep the airplane stall proof in compliance with its type certificate at 
the higher weight.  Some people have been known to fly C and CD model 
coupes at higher than 1260 lbs and just avoid the stall.

Personally I would either stay with a CD or go with the split elevator.

David Abrams
http://ercoupe.com

William Potter wrote:
> I am thinking of converting N94638 415 CD to D to get the increased 
> gross weight. What are the pluses and minuses of this conversion. Are 
> the handling characteristics of the D significantly different. Would it 
> be better to convert to the E model. Your thoughts on this process are 
> appreciated.  Bill
> 

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