Patrick L. Hatfield
  • Salem, OR
  • United States
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Profile Information

Aircraft Model
Project Status
Less than half
Building From
Engine installed (or plan to install)
Building Experience
No Experience
Flying Experience
Private Pilot
Building and Flying Info / Your Profession / Other Background Info
Retired Navy Chief, current computer engineer for Oregon DOT. 19 years naval aviation O & I level.

Patrick L. Hatfield's Blog

CH-701 Modification to cockpit roof.

Posted on August 3, 2013 at 9:46pm 5 Comments

I have read that there is a modification to the CH750 that replaces the flat plexiglas between the wing roots with an airfoil shape that is suppose to reduce drag and turbulance, and even increase lift.   Does anyone know if there is such a mod for the 701?

CH-701 Elevator Confusion

Posted on June 18, 2013 at 9:54pm 4 Comments

Plans indicate the trailing edge beveled edge on the top of the elevator pointing 15 degrees up, causing a permanent down trim.

The instructions indicate in two separate places, the beveled trailing edge should be on the bottom of the elevator creating a flat and  neutral lift trailing edge.

My question is:  which is the correct?

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At 2:53am on August 12, 2013, Chumphol Sirinavin said…

Ari Hulkkonen has a few photos of his plane after the roof mod. Look them up at his page.


At 2:39am on August 12, 2013, Chumphol Sirinavin said…


Have a look at the link below

Or you can search the Blog with 'added head room for an old ch 701'



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