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Hurricane 425 Discussion and support of the Gaui Hurricane 425 |
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02-06-2011, 05:17 AM | #1 (permalink) |
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Join Date: Jul 2010
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New 425 refinements
Hello Hurricaners. Greetings from NZ. I'm another lurker that has been enjoying the forum, having built up a Gaui 425 for myself. My story, learned the basics on a few cheap 450 clones then decided to try something bigger (as one does!). I'm at the stage where I'm flying around at speed ok and can do basic flips and rolls etc. I found the 425 basic kit very easy to build and describe it to people as "the higher end of plastic". There's not a lot Gaui gear down this way so it's abit of a novalty having something different. I get most stuff from Flying Hobby - they seem pretty good and EMS is less than a week usually.
I've been tweeking things to get performance to where it suits my current skills. I have it running quite nicely now but would like it a little less touchy on elevator and alieron around centre stick. I don't have any trouble controlling it but, just want nice smooth flight. I have collective at about +/- 11 deg and cyclic at about +/- 6 deg with pos expo on the radio at 25. I run the headspeed in the 2400 to 2600 range with SAB 425mm blades. I installed the CNC control arms and worked on getting them all nice and straight with the servos. I also swapped the stock flybar paddles for the larger white ones (p/n 204734) but that didn't seem to make much difference either. Any suggestions much appreciated. See photos. Phil. Gaui 425 basic kit. Stock 50/19/61 gearing with 14T pinion. Z-Power Z20A-KV1470 motor with Turnigy Plush 60A ESC. Align DS510 on cyclic and GP780/DS520 on tail. I get 4 min (just) on 2200 packs. |
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02-06-2011, 10:53 AM | #2 (permalink) |
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Join Date: Feb 2008
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Myself I use around 20% expo in those areas. It softens it up enough for me without loosing any sensitivity.
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02-06-2011, 12:08 PM | #3 (permalink) |
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Kudos on a nice looking bird
Rooted MT3G + Cyanogen Mod 6.1 + Tapatalk = WIN
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02-06-2011, 03:48 PM | #4 (permalink) |
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Join Date: Feb 2007
Location: England
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Nice looking heli - which canopy is that ?
Did you use the adaptors to get teh 510s to fit ? BTW the blade paddles should make it more stable |
02-06-2011, 05:21 PM | #5 (permalink) |
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Thread Starter
Join Date: Jul 2010
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Canopy is H425 FRP Painted Canopy(G1 Type) from Flying Hobby - P/N 204170.
Yes, used the servo adapter plates, seemed to work out ok. The heli is pretty stable, just that sensitivity I'm trying to reduce - maybe it's as good as it's going to be, might have to get used to it. |
02-06-2011, 05:46 PM | #6 (permalink) | |
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Join Date: Jul 2010
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Quote:
I'd suggest those: You might think of adding even more weight, but then you need to search for something similar like this (it is for Align T450): Mounted like this: Whatever you will figure out please remember to mount that additional weigh in a very safety way...it is quite a speed/force down there... In general, the bigger, longer and heavier the flybar is the less responsive the head is. Bigger rotating mass = less sensitive cyclic. If you do so (add weight) 3D flying will be more difficult to perform and in the extreme it could result crushing the heli. That is why 3D experts makes the flybar as light as possible or... go FBL . On the other hand 425mm will always be a bit nervous, so in order to avoid this you would need to... stretch it |
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02-06-2011, 09:04 PM | #7 (permalink) | |
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Join Date: Dec 2007
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Quote:
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02-28-2011, 03:23 AM | #8 (permalink) |
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Thread Starter
Join Date: Jul 2010
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Flying better now....
Thanks everyone. I realised that the original paddles are actually heavier so I put those back on and set elev & al expo to 30% Also decided to try a governor so splashed out on a Hobbywing Platinum 60A. Governor seems to work well - flies nicely for me at about 2400 RPM, and 2600 RPM when I feel like trying swifter things.
Phil. |
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