Fwd: Approach speeds

[CALXA]

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Title: Re: Approach speeds

Jeff,
welcome to ercoupes.

I turn to final about 85 mph, slowing down to about 75 over the fence. But you
gotta be careful about some coups - 415 C originaklly had 13 degrees of up
elevator, when upgrading to 85 hp and increasing the gross to 1400 # the
elevator was restricted to 9 degreess. This prevented the pilot from attaining
a power on stall & spin...
Only a couple of D models were built due to the unsatisfactory landing
characteristics - ie: high sink rate, for folks who had been approaching at 65
- 70 or so . Now they were hitting hard as no more up elevator control.

But, a lot of coups were concerted to 85 hp, and many evidently were
restricted as to the up elevator control .... so you see the problem. If you
dont have 134 degrees of up, then you better keep the speed up. The E model
solved this problem by cutting a section out of the elevator, reducing the
total area, which allows 25 degrees of up without power on stalls, and
excellent landing control.

If the coup sits tail low, the higher approach speed and landing roll speed
presents a problem. The coupe wasdesigned to sit tail high so the angle of
atteck was at a negative angle of atteck on landing roll. This made is safe to
land at high speeds if you need to, as when the nose gear touches down, you
dump all lift.  Neat, huh.

Have fun, land on the mains, with the nose in the air, when the plane turns
downthe runway, and the nose drops to the pavement, just frive it home...
 Have fun, and fly safe.

N93539..Harry Francis, BCB

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