FlipFlop
Registered User
Maintaining at Flight Level Zero, requesting lower
This guy needs some help!... This sounds like a scary situation!...
Date: Tue, 18 May 2004 09:10:39 -0800
From: Keith Imel <keithimel@alaska.net>
To: piper-cub-builders@yahoogroups.com
Reply-to: piper-cub-builders@yahoogroups.com
Subject: [piper-cub-builders] trim problem
Group Members,
My Cub does not have enough nose down trim. My trim system is assembled correctly. I have a 1946 J3C with a O235 Lycoming with 115 horsepower. I have Flaps installed and a PA18 fuel system. Also I have PA18 tailfeathers.
If I leave the Flaps up then I have enough trim authority. But when I pull on the Flaps I quickly run out of nose down trim. At full Flaps with a passenger it requires about 20 pounds stick push to maintain 45 MPH indicated!
Also I have a PA18 swing mount with PA18 pressure cowl. I wonder if the thrust line is not down enough?? But at low power settings it is just as bad. I did install a spring under the rear seat pulling the stick down and took care of about half the problem. I have the option of increasing the spring tension even more. Any ideas on the wisdom of doing this? Or any ideas of other ways to solve this problem?
Thanks Keith
Date: Tue, 18 May 2004 09:10:39 -0800
From: Keith Imel <keithimel@alaska.net>
To: piper-cub-builders@yahoogroups.com
Reply-to: piper-cub-builders@yahoogroups.com
Subject: [piper-cub-builders] trim problem
Group Members,
My Cub does not have enough nose down trim. My trim system is assembled correctly. I have a 1946 J3C with a O235 Lycoming with 115 horsepower. I have Flaps installed and a PA18 fuel system. Also I have PA18 tailfeathers.
If I leave the Flaps up then I have enough trim authority. But when I pull on the Flaps I quickly run out of nose down trim. At full Flaps with a passenger it requires about 20 pounds stick push to maintain 45 MPH indicated!
Also I have a PA18 swing mount with PA18 pressure cowl. I wonder if the thrust line is not down enough?? But at low power settings it is just as bad. I did install a spring under the rear seat pulling the stick down and took care of about half the problem. I have the option of increasing the spring tension even more. Any ideas on the wisdom of doing this? Or any ideas of other ways to solve this problem?
Thanks Keith