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| danrc, Comment for image # 8718 | 28 Jun 08 20:13 |
| Add power to this one and make sure that the elevator is working properly! A bigger rudder may be necessary, I think the stock is a bit wimpy. |
| jgood, Comment for image # 8718 | 23 Jun 08 20:17 |
| Sounds like yours is much better setup than mine. Which is good news - there is hope for me! |
| danrc, Comment for image # 8718 | 23 Jun 08 10:12 |
| Flight report: I put in about 5 flights on this plane this weekend with great success. The plane rolls on its axis in both directions without really losing any altitude at all. I'm very pleased with its performance. Repairs and tweaks on this plane are constant. The tendancy to nose over in grass is tough on the upper struts and landing gear. |
| danrc, Comment for image # 8718 | 20 Jun 08 13:51 |
| The weight is estimated between 6-7oz, I'll get a more accurate weight for you this weeknd. The motor is a Grayson Hobby 2204 with a 7x3 gws prop. The battery is a 3s 500 mah commonsense rc. The flight you see on the vimeo link was tremendous. It flew exceptionally well for upwards of 7 minutes until I decided to bring it in since my battery wasn't at full charge. I didn't want to risk losing power on a plane that I wasn't fully familiar with. My turns were crisp and tight, loops were as big or as tight as I wanted them. Subsequent flights are scheduled for this weekend when the winds are down. I was able to ROG this plane without much trouble. It does require some right rudder on take off and a slight bit of throttle on landing. It flies like a dream. |
| danrc, Comment for image # 8719 | 19 Jun 08 11:24 |
| The guillows conversion thread on Rcgroups has a long discussion about this plane. |
| danrc, Comment for image # 8719 | 19 Jun 08 11:23 |
| Sorry about the Dupes, my fault.
I put a small 1/32 spar under the leading edge, however I think it came out to closer to 1/16 after the glue set a little funny. If you weren't experiencing ballooning or seeing the need for excessive downtrim then you should be fine. |
| jgood, Comment for image # 8719 | 19 Jun 08 11:21 |
| I'll remove those dupe comments later!
That's all good information for me, thanks Dan. I need to get mine up there again. How big was your shim under the elevator leading edge? |
| danrc, Comment for image # 8719 | 19 Jun 08 11:16 |
| Hi James, I was hoping you'd jump on. I used your build thread as reference as I built (Thank you!!!). You may be amused by this, I did not resize the rudder and I tend to fly without it on all of my models, this one included. With my pull/pull ailerons I get a considerable amount of throw, which I cut down to around 70%, but may still need to cut a little more off. I don't know if you can see, but I added some length onto the ailerons but did not build them up as I probably should have. I noticed a little bit of a 'knife edge' on left hand turns but that was due to a sagging aileron control line that I remedied after the flight. I'm embarassed to say that I don't know the AUW. I'll check that this evening. I was going off of assumed numbers for the airframe with litefilm (?), engine (21 grams), 3 servos (5g each) and esc -7grams. The engine is from grayson hobby. It tows my micro telemaster and my brother's glider around with authority and it is closer to a Park 300 than a 250 in output and thrust. I flew most of the time at around 1/2 to 2/3 throttle. It climbs very well at that rate.
I was amused that this plane soared as much as it does as well. My landing was unbelievably smooth. |
| danrc, Comment for image # 8719 | 19 Jun 08 11:12 |
| Hi James, I was hoping you'd jump on. I used your build thread as reference as I built (Thank you!!!). You may be amused by this, I did not resize the rudder and I tend to fly without it on all of my models, this one included. With my pull/pull ailerons I get a considerable amount of throw, which I cut down to around 70%, but may still need to cut a little more off. I don't know if you can see, but I added some length onto the ailerons but did not build them up as I probably should have. I noticed a little bit of a 'knife edge' on left hand turns but that was due to a sagging aileron control line that I remedied after the flight. I'm embarassed to say that I don't know the AUW. I'll check that this evening. I was going off of assumed numbers for the airframe with litefilm (?), engine (21 grams), 3 servos (5g each) and esc -7grams. The engine is from grayson hobby. It tows my micro telemaster and my brother's glider around with authority and it is closer to a Park 300 than a 250 in output and thrust. I flew most of the time at around 1/2 to 2/3 throttle. It climbs very well at that rate.
I was amused that this plane soared as much as it does as well. My landing was unbelievably smooth. |
| danrc, Comment for image # 8719 | 19 Jun 08 11:06 |
| Hi James, I was hoping you'd jump on. I used your build thread as reference as I built (Thank you!!!). You may be amused by this, I did not resize the rudder and I tend to fly without it on all of my models, this one included. With my pull/pull ailerons I get a considerable amount of throw, which I cut down to around 70%, but may still need to cut a little more off. I don't know if you can see, but I added some length onto the ailerons but did not build them up as I probably should have. I noticed a little bit of a 'knife edge' on left hand turns but that was due to a sagging aileron control line that I remedied after the flight. I'm embarassed to say that I don't know the AUW. I'll check that this evening. I was going off of assumed numbers for the airframe with litefilm (?), engine (21 grams), 3 servos (5g each) and esc -7grams. The engine is from grayson hobby. It tows my micro telemaster and my brother's glider around with authority and it is closer to a Park 300 than a 250 in output and thrust. I flew most of the time at around 1/2 to 2/3 throttle. It climbs very well at that rate.
I was amused that this plane soared as much as it does as well. My landing was unbelievably smooth. |
| jgood, Comment for image # 8719 | 19 Jun 08 10:14 |
| That's interesting, Dan. My flights were certainly a little scary, I felt lateral control was minimal. Did you resize the rudder at all? What was your AUW? |
| danrc, Comment for image # 8719 | 19 Jun 08 09:56 |
| When it's trimmed properly it flies like a dream. It feels like I'm flying a plane 3 times its size based upon the wing area. |
| danrc, Comment for image # 8719 | 19 Jun 08 09:32 |
| It is a tricky plane to get into the air, that's true. I had a couple pseudo flights before this one. Each was truncated for a couple reasons. 1) This plane needs a shim put on the leading edge of the horizontal stabilizer to increase downward pressure, otherwise it will porpoise (this led to a cracked cabane on flight #1) 2) Thrust is essential but don't over-do it on the prop size. I had an 8x4 sf prop on a welgard 2204 motor but it made the plane's responsiveness a little soggy, so I put it down. This again led to a cracked cabane and landing gear assembly. I replaced the landing gear with a wire system that I can remove and sized down my prop.
The next flight was the one you see here. Take your time with this build, there are a few folks out there that should take all the credit, I just followed in their footsteps. |
| RodN, Comment for image # 8719 | 18 Jun 08 23:07 |
| Nice photo of a nice build Dan. |
| jgood, Comment for image # 8718 | 18 Jun 08 17:30 |
| Very nice! What are the details on this? Weight? Motor? Battery? Prop? How did it fly?! We need to know! |
| SteveM, Comment for image # 8719 | 18 Jun 08 14:47 |
| James reported that his DR1 was a handful to fly, did you have any trouble? |
| danrc, Image # 8720 | 18 Jun 08 12:24 |
Basketball hoops in 1917 Europe? |
| danrc, Image # 8719 | 18 Jun 08 12:24 |
In flight |
| danrc, Comment for image # 8718 | 18 Jun 08 12:21 |
| http://www.vimeo.com/1173539 |
| danrc, Image # 8718 | 18 Jun 08 12:21 |
ready for flight |
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