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Author Topic: Conrad Reely DLG 650  (Read 386 times)
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Andyjbj
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« on: May 15, 2018, 03:29:30 PM »

The Conrad Reely DLG 650 is a 650mm dlg. Anyone have experience with this, or can explain why it flies so poorly compared to the Whipit? Is it just weight, or is it also the design of the wing tips?

I figured that or the rudder, so i changed the rudder as shown and am making a new, high AR wing. Opinions wecomehttps://uploads.tapatalk-cdn.com/20180515/fb79ead1227170cec5682990959c280e.jpghttps://uploads.tapatalk-cdn.com/20180515/1d3bec9507d78d34954894b848df1450.jpg. https://uploads.tapatalk-cdn.com/20180515/52d6500963990f33b1d0e7b2197bea65.jpg


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Conrad Reely DLG 650
Conrad Reely DLG 650
Conrad Reely DLG 650
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Konrad
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« Reply #1 on: May 15, 2018, 09:42:30 PM »

I don't know that the whipit flies very well. But looking at that wing I suspect that with the chord bing so narrow that the Reynolds number are working against any theoretical benefit of a high aspect ratio wing design.

I will say that to get any kind of perfromance from my UMX ASK-21 I have to keep the speed high.
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Cut it twice and it's still too short!
Konrad
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« Reply #2 on: May 16, 2018, 09:31:02 AM »

For the "stock" models I see where the advertised weights are vastly different 43g verses 61g.
I also suspect that the longer fuselage of the Whipit adds stability and control power.
https://www.horizonhobby.com/product/airplanes/ultra-micros/sailplanes/umx-whipit-dlg-bnf-basic-eflu3150
https://www.conrad.com/ce/en/product/1591490/Reely-DLG-650-RC-model-glider-RtF-650-mm

All the best,
Konrad
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Cut it twice and it's still too short!
Monz
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« Reply #3 on: May 16, 2018, 02:21:34 PM »

I've just been getting into DLG with a second hand, ready to fly, one of these: http://streamf3k.com/products/nxt/

I've not flown any of the lower end models (nor any previous DLG experience in fact) so can't comment on their performance, but I would recommend finding a second hand 1.5m carbon DLG online and flying that. The learning curve is really shallow with one of these high performance gliders as they fly so well.

This NXT is the most fun I've had in a long while!
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SP250
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« Reply #4 on: May 16, 2018, 05:11:57 PM »

Blimey Monz that Stream is not cheap!

I thought the Akcent 2 that I'm assembling now was a touch pricey at nearly £300.

John M
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Andyjbj
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« Reply #5 on: May 17, 2018, 12:51:10 AM »

Yeah the wild high AR wing is my mod. I did notice the weight difference but not the tail length—thanks, good idea.


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Maxout
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« Reply #6 on: May 17, 2018, 11:06:03 AM »

High AR wings without composite structure are a bad idea, especially on a DLG.

Stream NXT is a high end (albeit now somewhat dated) F3K model that is notoriously difficult to fly to its full capabilities. There are a variety of similarly priced models I recommend over it, especially the Flitz, which is much better mannered and launches just as high. The Snipe is also quite good and similarly easy to fly. You can pick up used ones fairly cheaply. I've beaten very experienced fliers who were invested in the NXT while flying 10 year old bagged wing designs. That's a pretty disappointing condition for a model that's proven capable of much higher performance. It's just that hard to fly it efficiently.

If you want an affordable full composite DLG, get the new Epee XT. I've flown several Epees and am extremely impressed with them. Experienced fliers are launching it well over 180' for flight times over 2 minutes. That's pretty spectacular for a model that ships to your door for under $200 (in the US, mildly higher overseas). Bear in mind it's a bind and fly DSMX setup, so you'll have to specifically request a different receiver if you don't fly DSMX.
https://www.rcgroups.com/forums/showthread.php?3069364-Epee-XT

Additional note: I owned a Whipit for a while and crashed it multiple times from the nose slipping off and ejecting the battery (even with the nosecone taped on). I love how they fly, but that's a dealbreaker because the control brick is in the part that breaks off. Finally in frustration I built a smaller balsa model which does not feature the weaknesses of the Whipit. The result was this fun little bird which launches better than the Whipit and has better wind penetration.
https://www.youtube.com/watch?v=Rm7ba2A-0YY
And then I put a rocket pod on it because, well, why not?
https://www.youtube.com/watch?v=SgKCVl0MxQM&t=2s

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Andyjbj
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« Reply #7 on: May 17, 2018, 02:47:42 PM »

Yeah the high ar wing collapsed with the first few flights today, it would have needed stronger foam and stronger carbon. Do you sell plans or kits for that ‘19 glider? looks great.


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Yak 52
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« Reply #8 on: May 17, 2018, 03:26:14 PM »

19" is huge Josh  Wink Cool

Jon
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Re: Conrad Reely DLG 650
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Konrad
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« Reply #9 on: May 17, 2018, 05:24:45 PM »

If you are looking for a simple inexpensive easy to build DHL that will teach you the basics of low level thermal hunting this might fit your requirements.
http://www.mountainmodels.com/product_info.php?products_id=212

The small micro gliders can work but really are a a disadvantage. This is why they often need to be of exquisite construction and form.

May I ask what you are expecting from these micro gliders?
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Cut it twice and it's still too short!
Andyjbj
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« Reply #10 on: May 18, 2018, 02:19:17 AM »

yeah, my fields are very very very small. The bug is the biggest/fastest glider i can fly there. I even get the whipit in the trees sometimes.


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« Reply #11 on: May 21, 2018, 01:15:10 PM »

19" is huge Josh  Wink Cool

That's a sweet rig, Jon. How does it fly?

Yeah the high ar wing collapsed with the first few flights today, it would have needed stronger foam and stronger carbon. Do you sell plans or kits for that ‘19 glider? looks great.

Yup, we have a kit for it: http://jhaerospace.com/product/carbonette-19-micro-r-c-dlg-glider-only/
If you can source B-C impulse rocket motors and wish to fly it to the edge of visibility, you can get it with a boost pod:
http://jhaerospace.com/product/carbonette-19-micro-r-c-dlg-boost-glider/

Here's a build review from James Duffy, one of the best rocket glider guys in the US: http://www.rocketryforum.com/showthread.php?144457-Carbonette-19-R-C-BG-DLG
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