Page Index Toggle Pages: 1 Send TopicPrint
Normal Topic Comet 3401 Douglas Dauntless (Read 256 times)
thymekiller
Administrator
*****
Offline


Stick & Tissue

Posts: 3384
Location: Springfield Missouri
Joined: Jun 14th, 2008
Re: Comet 3401 Douglas Dauntless
Reply #7 - Nov 15th, 2022 at 9:38pm
Print Post  
Looks like your on the right track.
  

",,,The road goes on forever, and the party never ends..."
Back to top
 
IP Logged
 
Too Much Glue
3 Star Member
***
Offline


I Love YaBB 2.5 AE!

Posts: 146
Joined: Sep 25th, 2018
Re: Comet 3401 Douglas Dauntless
Reply #6 - Oct 9th, 2022 at 11:16am
Print Post  
Thanks, Sky9pilot, I will keep working with it.
  
Back to top
 
IP Logged
 
Sky9pilot
Administrator
*****
Offline


Stick & Tissue

Posts: 12766
Location: Kelso, WA 98626 USA
Joined: Jan 9th, 2010
Re: Comet 3401 Douglas Dauntless
Reply #5 - Oct 9th, 2022 at 11:06am
Print Post  
Always great to see them take flight!  Well done!
  

If God is your Co-pilot...switch seats...
Your attitude will determine your altitude!- John Maxwell
And ye shall know the truth, and the truth shall set you free. Jn 8:32
Back to top
IP Logged
 
Too Much Glue
3 Star Member
***
Offline


I Love YaBB 2.5 AE!

Posts: 146
Joined: Sep 25th, 2018
Re: Comet 3401 Douglas Dauntless
Reply #4 - Oct 9th, 2022 at 10:39am
Print Post  
Using 60-inches of 1/8th rubber. Added a touch more right-hand and downward thrust. I'm using 1/32nd and 1/64th shims to make thrust adjustments, so it's not the most accurate method. This was around 400-450 turns. It did not nice left-hand turn but did not climb that well. More turns will make it climb faster, but it stalls a little too easy. I think I might go down to a single loop of 3/16th and crank in more turns. Undecided Another problem is the grass is too wet in the morning. The thing starts to get soaked on the bottom after a couple of flights. Angry                                                             
  

( 185 KB | 18 Downloads )
1_048.JPG
( 224 KB | 22 Downloads )
2_041.JPG
( 264 KB | 20 Downloads )
3_024.JPG
( 267 KB | 19 Downloads )
4_013.JPG
( 121 KB | 18 Downloads )
5_008.JPG
Back to top
 
IP Logged
 
Sky9pilot
Administrator
*****
Offline


Stick & Tissue

Posts: 12766
Location: Kelso, WA 98626 USA
Joined: Jan 9th, 2010
Re: Comet 3401 Douglas Dauntless
Reply #3 - Sep 5th, 2022 at 4:30pm
Print Post  
I'm with you there.  I don't compete and am pleased if I can get a circuit overhead.  Sound like you have plenty of dihedral in both models and so the picture was camera angle that gave that impression.  Each plane has it's own challenges to trim and then some just fly right off the building board!  Keep up the great work!
  

If God is your Co-pilot...switch seats...
Your attitude will determine your altitude!- John Maxwell
And ye shall know the truth, and the truth shall set you free. Jn 8:32
Back to top
IP Logged
 
Too Much Glue
3 Star Member
***
Offline


I Love YaBB 2.5 AE!

Posts: 146
Joined: Sep 25th, 2018
Re: Comet 3401 Douglas Dauntless
Reply #2 - Sep 5th, 2022 at 2:26pm
Print Post  
The dihedral for the Dougles Dauntless is 1-1/4 inch per wing panel. The dihedral for the Vultee Vengeance is 5/8 inch per wing panel.  This is according to plan, but they do happen at different points along the wingspan. Both models have 1/16th of an inch of wing tip wash out.  I think the angle of my formers could be a little off, even though I used a former jig. I just have to work with it a while. My goal is just to get stuff to fly reasonably well, not compete in competition. Wink
  
Back to top
 
IP Logged
 
Sky9pilot
Administrator
*****
Offline


Stick & Tissue

Posts: 12766
Location: Kelso, WA 98626 USA
Joined: Jan 9th, 2010
Re: Comet 3401 Douglas Dauntless
Reply #1 - Sep 4th, 2022 at 6:26pm
Print Post  
It might be the camera angle but the Dauntless doesn't look like it has much dihedral.  But it's great  to see air under her wings!!! Smiley
  

If God is your Co-pilot...switch seats...
Your attitude will determine your altitude!- John Maxwell
And ye shall know the truth, and the truth shall set you free. Jn 8:32
Back to top
IP Logged
 
Too Much Glue
3 Star Member
***
Offline


I Love YaBB 2.5 AE!

Posts: 146
Joined: Sep 25th, 2018
Comet 3401 Douglas Dauntless
Sep 4th, 2022 at 10:42am
Print Post  
Did some short early flight with the Dauntless. I'm using the same 60-inch 3/32 motor that I used in the Vultee Vengeance. It wanted to go too hard to the left. I had to give it more right hand thrust than the Vengeance. I also gave it some right rudder. That straightened it out more, but really hurt the glide.  Huh  This model flies a little slower than the Vengeance. I did up to around 350-400 turns and called it a day. I think this one's going to be a little harder to fly well. Undecided
  

( 235 KB | 22 Downloads )
4_012.JPG
( 164 KB | 23 Downloads )
5_007.JPG
( 273 KB | 24 Downloads )
7.JPG
Back to top
 
IP Logged
 
Page Index Toggle Pages: 1
Send TopicPrint