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250 Class Electric Helicopters 250 Class Electric Helicopters manufactured by Align, Tarot, SYMA, Airhog, Chaos, HK and similar.


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Old 04-20-2018, 01:28 PM   #1 (permalink)
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Default Converting to flybarless info please?

Getting back into heli`s after long break.
I have a trex 250 flybar that I would like to convert to flybarless.
I have seen a "upgrade" head made by Tarot that is said to fit align models. Is it just the head and main shaft I need + a flybarless stabaliser electronics.
I have also seen what looks to be 2 types of flybarless head. One had normal looking control links and the other had much less in linkages.
If anyone can help with my options that would be great
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Old 04-20-2018, 06:58 PM   #2 (permalink)
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Well... What you're considering can open a big can of worms. I've done it in that I bought the Hobby King HK250GT kit, which comes with the flybar head, and built it as flybarless with upgrade parts.

The Align H25119 250 DFC upgrade head kit comes with the main shaft but uses the original swashplate. All things considered that is probably your best value. But... FBL helicopters place more demands on the cyclic servos and after upgrading the servos now you'll need a higher output BEC to power them. You see where I'm going with this.

If you really like the 250 and you can afford it you'll really enjoy the Trex 250 Pro DFC kit. It's not cheap and I've had the best results with the MKS DS95i tail servo I'm using. Very solid tail. Also not cheap. The Align tail servo I got in my kit was defective and caused a crash on the maiden flight. You'll end up in the 400 to 500 dollar range for an awesome flying 250. On the other hand you can build a Trex 450L for about the same price.

However, with an affordable external BEC from Hobby King and using your cyclic servos and the parts you mentioned in your original post; properly setup you should have a flyable 250.
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Align - 700N Helibug G290RC / 700X / 450L / 250 Pro DFC
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Old 04-21-2018, 10:04 AM   #3 (permalink)
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Default

thanks for taking the time to answer.
I did not realise the flybarless/dfc model had different servos and esc/bec.
I thought it was only the head and stabilization/3 axis unit instead of normal gyro.
given your advice I will not bother with the upgrade. the dfc kit is too expensive also, I might have to rebuild the flybar model BUT in all honesty lost intersst in that.
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Old 04-22-2018, 09:25 PM   #4 (permalink)
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Sorry, I didn't mean to discourage you. You can still have fun with an upgrade if you're patient and you don't mind waiting for affordable parts from Hobby King and maybe a used FBL Gyro on eBay or things like that. For me the adventure of building is as much fun as the flying. I did that sort of thing for several years with my first 250. And the 250 will fly just fine with the FBL head and cheap cyclic servos like the $7 Hobby King servos I had on my first 250. They're just a little sluggish which you won't notice unless you upgrade to fast cyclic servos.

I do get carried away with the enthusiasm I have for my newest 250 though. I don't regret buying it. Good luck!
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Align - 700N Helibug G290RC / 700X / 450L / 250 Pro DFC
Gaui - R5
Spektrum - DX20 / DX9 Black Editon
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Old 04-22-2018, 09:54 PM   #5 (permalink)
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Hi

I have a 250 DFC myself (used to be a pair) but have been keeping it as a model display only for about two years now mainly because of better options.

However, I understand it's not a direct answer to your query but perhaps you can start off with a clean slate: consider the Oxy2 either the 190 or the 210. The sport is pretty cheap and can be built with cheap electronics -clicky- Oxy2s fly great, easy to build and maintain, and parts are cheap. I got three kits myself. Perhaps you can migrate most of the electronics from your 250 since the Oxy2 airframe is pretty forgiving.

Welcome back to the hobby.
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