|
Post by Garf on Jun 19, 2010 19:33:54 GMT -7
It felt a little tail heavy, so I slapped one of my monsteroid mufflers on it. I can always remove it at the field.
|
|
|
Post by Garf on Jun 20, 2010 14:46:02 GMT -7
Test flights. First with muffler, a little sluggish, pulls like a bulldozer, more than enough power. Too fast. I had to rest after that flight. Second flight, no muffler, much richer setting, slower, still pulls too hard, turns a little better. It seems to hunt a little in level flight. I am going to pull the LA 46 and install the Brodak 40 for a test. There is no sign of any resonances in the plane whatsoever. I may use a lighter muffler on the Brodak 40, but I also need to adjust control throws. When I mount the Brodak, I will eliminate the engine offset. It doesn't need it.
|
|
|
Post by Garf on Jun 20, 2010 18:34:27 GMT -7
Removed the LA 46, installed the Brodak with no offset. I have to check the controls for neutral. I have a lighter muffler mounted. If it proves too nose heavy, I can always remove it at the field.
UPDATE: I checked the controls for neutral. They were off. I got them as close as I could. I'll have to see if they're close enough.
|
|
|
Post by Garf on Jun 24, 2010 16:46:34 GMT -7
Here is the installation of the Brodak 40.
|
|
|
Post by Garf on Jul 5, 2010 13:15:48 GMT -7
Brodak 40 worked fine, the plane didn't. In an effort to eliminate the hunting, I reduced the elevator throw. I planted it inverted in the reverse wingover. The fuselage broke aft of the wing. Back to the old drawing board. I need to invest in an incidence meter.
|
|
|
Post by Garf on Jul 12, 2010 10:54:45 GMT -7
After I pick up an incidence meter, I will evaluate the wreck to see if It will be worth repairing. OTHERWISE............................................
|
|
|
Post by marinaru on Jul 13, 2010 8:17:02 GMT -7
|
|
|
Post by Garf on Jul 13, 2010 9:14:39 GMT -7
How do you deal with the flaps, or do you simply leave them off till wing is secured?
|
|
|
Post by marinaru on Jul 13, 2010 23:13:56 GMT -7
How do you deal with the flaps, or do you simply leave them off till wing is secured? You can block them some how; usualy, I am using two pieces of flexible wood above and below the wing or tail and ruber bands to immobilize the mobile surfaces.
|
|
|
Post by Garf on Jul 22, 2010 10:21:58 GMT -7
I have a new Robart incidence meter. I can't see any way to use it with the flaps attached to the wing. Maybe I'm missing something.
|
|
|
Post by Garf on Aug 3, 2010 15:57:11 GMT -7
I am back on the repair of Fronkensteen. It should go together fairly quickly from here. The trick will be eliminating the hunting. First I need to find the cause of the problem.
|
|
|
Post by Garf on Aug 6, 2010 14:36:56 GMT -7
Repairing the fuselage break.
|
|
|
Post by Garf on Aug 10, 2010 11:39:14 GMT -7
The fuselage repairs have been blended and painted. I have decided to fly it without a rudder for test purposes, to look for the hunting problem, so I have painted the stab and rear of the fuselage, then will seal the stab glue joint and fly it to see if I am on the right track.
|
|
|
Post by Garf on Aug 15, 2010 12:50:47 GMT -7
Definitely on the right track. 95% of the hunting is gone. I'll reinforce the stab joint, install a rudder, and adjust the elevator and try it again.
|
|
|
Post by Garf on Aug 29, 2010 14:59:15 GMT -7
Flew the Fronkensteen 3 today. First flight, unstable, slight hunting, but too sensitive. Tried again with handle spacing a lot closer together. It felt a lot better. At one point, I believe the plane got caught by some turbulence. It turned sideways and cartwheeled in. Broke the fuselage again. I don't think this thing is going to work. I tried the PT-19/Fox MK-6 combat special. I couldn't start the thing. I know it runs, because I bench ran it. Strange.
|
|