Go Back  RCU Forums > RC Airplanes > ARF or RTF
Gp Dr1 Triplane >

Gp Dr1 Triplane

Community
Search
Notices
ARF or RTF Discuss ARF (Almost Ready to Fly) radio control airplanes here.

Gp Dr1 Triplane

Thread Tools
 
Search this Thread
 
Old 05-21-2003 | 04:23 PM
  #51  
LMProd's Avatar
Senior Member
 
Joined: Dec 2001
Posts: 288
Likes: 0
Received 0 Likes on 0 Posts
From: Woodland Hills , CA
Default Gp Dr1 Triplane

Any updates on the GP Dr 1 ?
Old 05-22-2003 | 04:10 PM
  #52  
My Feedback: (48)
 
Joined: May 2002
Posts: 718
Likes: 0
Received 1 Like on 1 Post
From: Alma, AR
Default First Real Flight of DR-1

First attempt was with a 58cc 4Cy engine !! Wrong idea, would not get off ground, when it did the wind over came it and tossed it to ground.
BUT - I replace small 4c with a OS61fx and what a difference !! First real flying was last night 5/21/03
Plane is absolutely a beautiful flyer. The added power got the tail up quickly which allowed the rudder to give plenty of control. Plane breaks ground easily with a very smooth fly-out. Flys very well with ailerons only, but rudder input or coupling makes it great (I do not couple rudder during take-off). Will roll and turn like crazy - lots of fun. This plane has only a slight climb when full power is added - not an issue. Very solid and holds a good heading. I did set the wheel wing at zero incidence to match wings and horiz. stab.
Only one click of left aileron trim was added, thats all.
I would not use anything less than a 91FS or 60 2 stroke on this plane. It needs the power to overcome drag, I do not need the power once it is up unless I want long loops. climbs etc.
Landing is really neat, the plane has a fast sink rate which I like, with a touch of throttle it stretches out for perfect wheel landings or three pointers.
Plane is not for beginners because it does require proper use of throttle and rudder. But for the more experienced flyer it is great.
I originally added a battery box for balance under cowl for the smaller engine. It is a little nose heavy for the OS61 but flys great.
Old 05-23-2003 | 12:45 PM
  #53  
E75
Member
My Feedback: (1)
 
Joined: Jan 2003
Posts: 83
Likes: 0
Received 0 Likes on 0 Posts
From: private , CT
Default Gp Dr1 Triplane

Originally posted by majesticmonkey
Thanks guys

rwh: I'm truly amazed that adding 1lb hardly altered the flight characteristics.

Does anyone else have this ballooning effect at full throttle? I can't imagine this being normal!
Actually, It's more common than you'd think. My tiger moth does the same thing. If it really bugs you, you can change the incedence of the top wing. But unless it's really severe it is natural for that type of plane to climb under power.
Old 05-23-2003 | 04:20 PM
  #54  
My Feedback: (48)
 
Joined: May 2002
Posts: 718
Likes: 0
Received 1 Like on 1 Post
From: Alma, AR
Default No Balooning -DR1

As mentioned previous post. I do not have ballooning with my DR1. ?? Maybe lucky but??
I did set wheel wing incidence to match wings (3) and stab, all zero. Factory setting was at 10 neg. for wheel wing. All three main wings and stab were dead on from factory. I did not change engine thrust position from factory. I did offset engine centerline to 3mm on 45 degree (head down at 235 degree)
When full throttle is applied I have a very slight climb, but it does not balloon.
Can't speak for others where they set or checked incidence to be at. Again maybe I'm lucky, but it sure flys good.
Old 05-24-2003 | 01:33 PM
  #55  
Senior Member
My Feedback: (4)
 
Joined: Aug 2002
Posts: 128
Likes: 0
Received 0 Likes on 0 Posts
From: Rockford, IL
Default Gp Dr1 Triplane

Man, I need to get one of tese planes. They look awesome!
Old 11-21-2003 | 11:42 AM
  #56  
Junior Member
 
Joined: Sep 2003
Posts: 3
Likes: 0
Received 0 Likes on 0 Posts
From: Arlington, TX,
Default RE: I have one!

What prop did you use ?
Old 11-21-2003 | 11:48 AM
  #57  
Junior Member
 
Joined: Sep 2003
Posts: 3
Likes: 0
Received 0 Likes on 0 Posts
From: Arlington, TX,
Default RE: GP Dr1

What prop did you use?
Old 11-21-2003 | 02:45 PM
  #58  
Sport_Pilot's Avatar
 
Joined: Jan 2002
Posts: 16,916
Likes: 0
Received 1 Like on 1 Post
From: Acworth, GA
Default RE: GP Dr1

I used a 14-6 on mine. Flew great for about a dozen flights or so. [sm=sunsmiley.gif] But the rudder fell off and it spun in. [sm=crying.gif] This happen to anyone?
Old 11-21-2003 | 10:53 PM
  #59  
Junior Member
 
Joined: Sep 2003
Posts: 3
Likes: 0
Received 0 Likes on 0 Posts
From: Arlington, TX,
Default RE: GP Dr1

Thanks for the info Sport-Pilot. Now I have an excuess to go back to the LHS,more money. Sorry to hear about yuor rudder.
Old 11-21-2003 | 11:48 PM
  #60  
Sport_Pilot's Avatar
 
Joined: Jan 2002
Posts: 16,916
Likes: 0
Received 1 Like on 1 Post
From: Acworth, GA
Default RE: GP Dr1

Yeah. Some tips. Use a .91 sized four stroke. Take out about half the right thrust out, and a little more down thrust. Center the engine half way between the position shown in the instructions and the center. Adjust the wheel wing to level with the wing or maybe 3 degrees down. And most important don't use the CA hinges on the rudder! Flys great, take off is easy, landings a bit tricky with a crosswind. Elevator is sensitive at speed. Makes surprisingly small turns and loops.
Old 04-29-2004 | 04:43 PM
  #61  
vertical grimmace's Avatar
My Feedback: (1)
 
Joined: Mar 2004
Posts: 7,271
Received 13 Likes on 12 Posts
From: Greeley, CO
Default RE: GP Dr1

Here is my Balsa USA DR-1. Saito 180 with 20-6 prop. Flies great . Easy to take off and land. Still getting used to the weather vane characteristic. Makes it tough to keep lined up with the runway. Solortex covering, handpainted with custom mixed house paint from home depot. I have around 10 flights on her but I have to say I still get nervous asI am used to flying the smaller ones!
Attached Thumbnails Click image for larger version

Name:	Nl30525.jpg
Views:	28
Size:	77.1 KB
ID:	127594   Click image for larger version

Name:	Pk30438.jpg
Views:	26
Size:	76.6 KB
ID:	127595   Click image for larger version

Name:	Jo31881.jpg
Views:	30
Size:	67.7 KB
ID:	127596  
Old 05-01-2004 | 05:13 PM
  #62  
jeffEE's Avatar
My Feedback: (5)
 
Joined: Nov 2002
Posts: 1,572
Received 11 Likes on 11 Posts
From: Lakeille MN
Default RE: GP Dr1

Here is my DRI. It too flies great!
Attached Thumbnails Click image for larger version

Name:	Wu61500.jpg
Views:	26
Size:	42.3 KB
ID:	128174  
Old 05-02-2004 | 07:10 PM
  #63  
BULL-RCU's Avatar
Senior Member
My Feedback: (15)
 
Joined: Jun 2003
Posts: 1,186
Likes: 0
Received 0 Likes on 0 Posts
From: Rochester, NY
Default RE: GP Dr1

ORIGINAL: jeffEE

Here is my DRI. It too flies great!
Is that a GP DR-1. I baught the GP one and want to paint it. If it is did you paint or recover yours?

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are On



Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

Copyright © 2026 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.