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May 23, 2019, 09:05 AM
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AntiArf's Avatar
Quote:
Originally Posted by aeromaniac
I recently got one of these unbuilt, and was wondering if it could fly on 2x fms 50mm fans, it could be interesting to reshape the nacelles and make lighter as well ?.
I'll have to fly it soon, but here you go. A bit late, but better here than never. Not FMS fans, but the notion of lightening and increasing nacelle length to reduce aft weight and required battery size is correct. The forum I posted this info in was clearly the wrong forum. Spec wise it looks good.
https://www.rcgroups.com/forums/show...-thread/page28
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May 23, 2019, 08:11 PM
Glow 😡 no no no
Quote:
Originally Posted by AntiArf
I'll have to fly it soon, but here you go. A bit late, but better here than never. Not FMS fans, but the notion of lightening and increasing nacelle length to reduce aft weight and required battery size is correct. The forum I posted this info in was clearly the wrong forum. Spec wise it looks good.
https://www.rcgroups.com/forums/show...-thread/page28
Perfect thanks
May 24, 2019, 03:29 PM
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AntiArf's Avatar
Sounds good aeromaniac. Actually more relevant to what you're planning is my Microfan GWS 262. Should have done the same aft lightening that I did on the EDF50 build linked in my last post. Still have it unflown, due to loss of interest. My first flew well until a weak 1.5A linear BEC shutdown. A standard 2A BEC on a 20A ESC would have been fine. It flew well but was heavy for a hand launcher. When I built the Microfan version, it wasn't much lighter and required some lead along with a battery about the same weight 5.5oz that I have my recent build balanced with. I also covered the wing with Microlite, which looks good but adds weight. The nacelle liners used heavy paper, versus the almost transparent vellum I now use that weighs much less than standard paper. The small cable operates a Dubro brake on the removable/steerable nose gear, which works with a 4gm servo and down elevator. The most recent EDF50 build linked in my last post is at least 5oz lighter than the Microfan version below, and probably more like 8oz lighter, if not more.
Jun 03, 2019, 05:01 PM
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AntiArf's Avatar
Got some video of it flying here. Tiny 12mm Feigoa motors/EDF50 fans exceeded my expectations. https://www.rcgroups.com/forums/show...&postcount=413
Last edited by AntiArf; Jun 05, 2019 at 12:41 PM.
Jan 19, 2020, 06:31 PM
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I just bought one of these GWS kits on FleaBay and after reading through this thread (esp. the OP) I realize that this is going to be a challenge from opening the box to when I crash it.
Jan 19, 2020, 06:58 PM
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AntiArf's Avatar
Build one like I did with scale like modified/lengthened nacelles, lighter 50mm power system and move gear forward to reduce the battery size required for balancing, as well as reducing the overall weight with a few different materials used such as scrapping some of the carbon rods and using lighter materials. I had a few of these models with heavier 370 inrunner power systems and they had to be launched and landed a bit fast. The recent one is a trainer like model to fly.
Jan 25, 2020, 05:42 PM
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Quote:
Originally Posted by AntiArf
Build one like I did with scale like modified/lengthened nacelles, lighter 50mm power system and move gear forward to reduce the battery size required for balancing, as well as reducing the overall weight with a few different materials used such as scrapping some of the carbon rods and using lighter materials. I had a few of these models with heavier 370 inrunner power systems and they had to be launched and landed a bit fast. The recent one is a trainer like model to fly.
Thanks for the tip! I just wish I'd seen it before getting 64mm EDFs for it.

I will lengthen the nacelles and move gear forward to reduce battery size. It's going to be a while before I build it though.
Jan 25, 2020, 05:46 PM
Registered User
Although I'll add that I don't have salvage nacelle-shaped foam to copy your mod. That's going to be tricky.
Jan 26, 2020, 11:28 PM
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AntiArf's Avatar
Actually pretty easy to carve some foam and extend the nacelles. I did it with a Microfan 50mm build (below) and EDF64 build. Flatten the nacelle openings a bit, add a block of foam with a hole cut into it, and sculpt. Stick the fans straight into the front of the nacelles, which will also look more scale as the full scale has turbine blades in the front. Built stock it helps with balancing, as even a 3s-2100 neighborhood lipo will require some lead to balance. I did some other lightening mods and forward servo relocation to balance my EDF50 version with a lipo that I will technically call a 3s-2100. I believe it was labeled as an 1800, but easily as large as the older 2100s, as they derate them to play the C-rating game.

My Microfan build is below. Never flew it and have no desire to now, with the EDF50 trainer easy flying version.
Feb 05, 2020, 03:45 PM
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Cptn. Krunch's Avatar
If you can fly most low wings you won't have too many hairy moments with these, even if you go with the 64 mm EDFs and the stock set ups. Of course it's all up to how you want them to fly. Here's mine, going strong after many years and many flights.
GWS ME 262 (3 min 12 sec)
Feb 05, 2020, 08:31 PM
Registered User
Quote:
Originally Posted by AntiArf
Actually pretty easy to carve some foam and extend the nacelles. I did it with a Microfan 50mm build (below) and EDF64 build. Flatten the nacelle openings a bit, add a block of foam with a hole cut into it, and sculpt. Stick the fans straight into the front of the nacelles, which will also look more scale as the full scale has turbine blades in the front. Built stock it helps with balancing, as even a 3s-2100 neighborhood lipo will require some lead to balance. I did some other lightening mods and forward servo relocation to balance my EDF50 version with a lipo that I will technically call a 3s-2100. I believe it was labeled as an 1800, but easily as large as the older 2100s, as they derate them to play the C-rating game.

My Microfan build is below. Never flew it and have no desire to now, with the EDF50 trainer easy flying version.
I'm still on the fence, but not against the mod. How long is that extra piece?


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