DQA 704 first flights
09-29-2007, 06:17 PM
#1
Senior Member
Thread Starter
Join Date: Jan 2005
Location: aberdeen , WA
Posts: 106
Likes: 0
Received 0 Likes
on
0 Posts
DQA 704 first flights
Well, today I took my 020td powered DQA 704 to the field along with my regular planes. The DQA got everyones attention as it was put through it's paces. it was slightly tail heavy at first, so had to spend the first flight continualy turning it out of a stall. Shiffted the battery foreward and it flew better.I only have rudder control,but was able to due several loops from a spiral.Several people wanted to try their hand at it. we all laughted and giggled at it's flying antics with only rudder control. Thanks to rrrailrosd for the plans! Build one you wont be disappointed. Logair
10-02-2007, 07:23 AM
#2
Senior Member
My Feedback: (5)
Join Date: Apr 2003
Location: Brunswick,
GA
Posts: 4,867
Likes: 0
Received 0 Likes
on
0 Posts
RE: DQA 704 first flights
How did I miss this thread?! What exactly is a DQA 704? Rudder-only has always sounded like a good challenge to me. Did it have the correct amount of elevator right off the board or is there a method of adjusting it before tossing it full bore into the sky? At any rate, it sounds like you guys had a real blast with it.
10-02-2007, 07:59 AM
#3
My Feedback: (18)
RE: DQA 704 first flights
Patrick, The DQA ( Darn Quick Airplane) is an older single channel design of the early 60's. It has about 2 degree of positive incidence on the wing which requires no elevator. I though you saw me fly some of my single channel stuff at the Carolina 1/2A Crew flyins.
Here is my DQA with Mule single channel transmitter, SH100 receiver and Citizen-ship rubber band powered escapement. I flew this once early this past Saturday at the Reedie race before the wind got up. The engine laid down so the flight was cut short. This particular model has almost 15 flights to date.
You should give single channel a try. Not too many people posses the unique skill to fly single channel!!!!
Bob Harris
Here is my DQA with Mule single channel transmitter, SH100 receiver and Citizen-ship rubber band powered escapement. I flew this once early this past Saturday at the Reedie race before the wind got up. The engine laid down so the flight was cut short. This particular model has almost 15 flights to date.
You should give single channel a try. Not too many people posses the unique skill to fly single channel!!!!
Bob Harris
10-02-2007, 12:53 PM
#4
Senior Member
Thread Starter
Join Date: Jan 2005
Location: aberdeen , WA
Posts: 106
Likes: 0
Received 0 Likes
on
0 Posts
RE: DQA 704 first flights
ptulmer, If you build the airplane according to the plans maintaining the wing and horizontal stab. incidence as shown on the plans it should fly ok to start. Start with the balance point on the main spar. I had to move the battery to the forward bay to prevent stalls under power. This model was a step back in time for me since I had built one in 1965 using an MDL superregen rec. Babcock escapement and a Cox 020 reed valve engine. It flew great. Most of the old single channel airplanes of this type were realy freeflight with occational radio input to make turns. However it is supprising the manuevers that can be done with only rudder control. I covered my recent one with ultracote because that's all I had. The fuselage and tail received two coates of aerogloss filler, and two coates brushed on Stearman red. I have several bottles of aeroglos paints still usable from the 70's. It has a 4ch. Hitec rec. bat. pack and small servo. It came out at 11oz. The instructions say not to go over that. I would post a picture but for some reason am having trouble uploading. Logair
10-03-2007, 10:44 AM
#7
Senior Member
My Feedback: (5)
Join Date: Apr 2003
Location: Brunswick,
GA
Posts: 4,867
Likes: 0
Received 0 Likes
on
0 Posts
RE: DQA 704 first flights
logair, if you click on the reply button in a previous post a new screen comes up that has a link at the bottom/left of the text box that allows you to upload images to RCU. The gray image button above the quick-reply box allows you to link to a picture URL.
11-24-2007, 11:33 PM
#11
Senior Member
Thread Starter
Join Date: Jan 2005
Location: aberdeen , WA
Posts: 106
Likes: 0
Received 0 Likes
on
0 Posts
RE: DQA 704 first flights
rringineer, The covering is ultracoat,because I had it.The fuselage and tail was two coats brushed aerogloss filler coat,followed by two light coats of aerogloss stearman red. I have a few bottles of aerogloss dope left over from the sixty's. It was still in good shape for use. I used a futaba trany and a four channel Hitec rec. and one small Hitec servo with small battery pack. I did not have any 1/16 sheet balsa long enough for the fuselage so used some light weight 3/32 balsa for the fuse. sides. I do think there are too many ribs in the design tho. Next time I would eliminate every other rib in each wing panel. It is a great little flier and I thank you again for the plans. Logair
