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Post by thevon on Dec 4, 2008 7:15:13 GMT 10
I'd like to get a really aerobatic capable EPP plane for SC. I'd like to get up to the hills more to fly the bigger planes but I'm realizing that when things are busy SC is the usual flying fix. I'd like to get something that I could learn rudder control with and try to learn better aerobatics.
I've looked at some of the threads about fully aerobatic planes, with flat fuselage profiles etc. But I don't know much about them. Any ideas anyone? I remember Ken and Shane bought a couple of "Le Fish" EPP planes - any news on how they're going? Andrew
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Post by felix on Dec 4, 2008 7:33:16 GMT 10
www.rcgroups.com/forums/showthread.php?t=885150 think this one would be ideal at 48 or 60". the lefish or madslide would be better again but would be a big build, this one could be knocked up in half a day. easy way would be make one would be with a coreflute wing and balsa fuse
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Post by thevon on Dec 5, 2008 7:47:59 GMT 10
I really like that Slinger - very keen. Where do we get 3mm and 6mm Depron in this city? I think Mark from SC uses it a fair bit - Felix do you know where he gets it? I do wonder however if the Depron wings might shred prematurely in the SC environment? I know they can be easily replaced but perhaps it's a little too fragile to handle those killer cactuses? Also, this kit - Axis 50 from Future Slope Designs looks like a very good performer. I suspect Ding with his aerobatic qualifications could have a ball with one of these! www.futureslopedesigns.com/Axis_50.htmlAnd check out the video of it on this thread www.rcgroups.com/forums/showthread.php?t=885572&highlight=axis+50
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Post by felix on Dec 5, 2008 17:04:06 GMT 10
Andrew, jeff would be the one to talk about depron. However rather than using depron that will, like you said, get torn to shreds how about just using coreflute folded over like mike's noodle? Super easy and quick to build. Add a balsa outline fuse frame with balsa sheet either side and you would have something easier to put together then a bee
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Post by thevon on Dec 5, 2008 18:50:01 GMT 10
Yeah, sounds like a good idea Felix. They seem to say in the Slinger thread that it can use some more weight anyway.
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Post by Pij on Dec 5, 2008 19:04:47 GMT 10
I built a Cub from Depron. It's super light, but has limited strength, and would be brittle in a medium-momentum impact. Mine is reinforced with Dyneema thread on the outside, and minimal strategic structures of balsa and bamboo on the inside. Having been build with far too much decalage, it had to survive nose-in impacts during trials. The Depron survived fine, even when the landing gear or balsa and wire got ripped right off. BUT this was in a very light, very slow flyer.
I hate to imaging the effect on Depron of a slope-type landing, at slope type speeds. The only way it could be good enough is if you had a slow-flyer slope-glider, but IMHO there's no way that could fly unless the wind was almost 100% vertical. If you have a glider with enough forward airspeed to make headway through the horizontal winds, then you have a glider that's too fast to survive a Depron-versus-rock impact.
I like the coreflute option. Has that been done with that design? I like the lite-ply option, too, except for the cost.
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Post by thevon on Dec 8, 2008 15:45:40 GMT 10
I've ordered some 3 and 6mm Depron sheets direct from the Australian supplier. I will try making a Swinger the way the designers recommend, see how it goes, and maybe modify some future versions. Should be fun anyway.
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Post by felix on Dec 8, 2008 17:07:43 GMT 10
Good stuff mate can’t wait to see how you go with this one! Once I get my current projects out of the way (modded beevo getting covered now,wild wing recovery and fleagle repair/mods) I plan to make a start on one of these at 1.5m span with a balsa fuse and coreflute wing. What size are planning on?
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Post by thevon on Dec 8, 2008 18:57:46 GMT 10
I just printed out the plans for the 48" and am going to work off that. I've ordered some super-cheap Hextronix servos from Hobby City. The guys that designed it recommend using a Lipo and an ESC as a voltage regulator, but I know nothing about these things and am going to stick with a flat AAA Eneloop pack - ordering from Andrew at Falcon. I'm quite looking forward to trying a build of something completely different.
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Post by mikey100 on Dec 8, 2008 21:47:34 GMT 10
I bought 6 Hextronic servos and have stripped the gears (same gear) in every one in 2 weeks. Have replaced all with HC-55 (same size & wt) at $20 each from Budget Hobbies. Will never touch the Hextronics even tho they were only $6 each.
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Post by thevon on Dec 8, 2008 21:49:59 GMT 10
Dang. I bought a bunch of spare gear sets too, so hopefully I can get some life out of them. Did you get yours from Hobby City?
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Post by mikey100 on Dec 8, 2008 22:30:12 GMT 10
Na...SC Models in Oz. $25 for 4 to your door.
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Post by Pij on Dec 9, 2008 5:03:32 GMT 10
I line my Hextronik servos up with my Tower Pro servos, and can't see any difference.
Mikey, did you strip the gears on the servos in your Slope Monkey? I had my doubts about putting those servos in a slope glider, as I've stripped Tower Pro servos in bigger planes, but the maker of the Monkeys was adamant that this was the right servo for them, being so much lighter.
So far, they've held up OK. But flying at SC is notoriously rough, so perhaps, Thevon, you might need something tougher, even in a lightweight glider.
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Post by thevon on Dec 9, 2008 6:51:33 GMT 10
Have a look at this - they reckon the ones from Hobby City are not the same as other Hextronic servos www.hobbycity.com/hobbycity/store/uh_viewItem.asp?idProduct=662&Product_Name=HXT900_9g_/_1.6kg_/_.12sec_Micro_ServoWho knows?? I'll give them a try and see. I do hate stripping servos and I'd generally prefer to pay 5 times as much to know they can take a prang and keep flying. But I'm trying to stick with the Swinger's designer's recommendations and they used the Hextronics from Hobby City. I haven't had good success with HS55's either. In the Minij I switched to HS65HB's which are enormously tougher.
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Post by mikey100 on Dec 9, 2008 8:25:18 GMT 10
Each servo stripped the top cog NOT on the arm spine. 3 on monkeys elevator, other 3 on Noodles ailerons. I know the 55's are bottom of the HItec range, but far superior to Hex's....and can buy spare parts 4 them. The company I bought my Hexs's from advertise theirs have SUPERIOR resin gears to the 'cheap plastic ones sold in Asia'. Glad I didnt have the cheap gears. LOL
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