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Gaui
Other › Tryed the new Gaui 255?
02-04-2010 02:34 AM  8 years agoPost 21
kanok1

rrNovice

Windy City Chicago

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NICE!!!
Awww man! I just bought a v2 Gaui 200. It looks much bigger than the previous 200. Now, I'm jealous!

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02-10-2010 03:07 AM  8 years agoPost 22
yys5617

rrNovice

Taipei

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Well !
The EP-200 and EP-255 has different fun ,
Also I still flying my 1st heli:EP-100

I love my cute EP-100

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03-17-2010 05:25 PM  8 years agoPost 23
rotornoggin

rrNovice

Florida

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I have put 15 batts through my new 255 so far. My initial impressions (& comparison to my T-Rex 250 SE):

This is the first "300 size" helicopter that I am aware of that can do high-head-speed, precise 3D. So for me it's a must have for that reason alone. I've always thought 450s were too big and too small at the same time. I have a T-Rex 500 and this will complement that perfectly.

The one I got was assembled well. Someone had pride in it because they scratched their initials in the plastic anti-rotation bracket. I thought that was cool. The fasteners I checked were all locktited and nothing has loosened so far. the flybar was out of balance, fixed by loosening one paddle 2 turns. The blades were perfectly balanced and the c.g.'s matched.

The things I like the most out of the box:
The tail - everything about it
Carbon tail control pushrod
The hardware
The canopy material - doesn't crack when you flex it like Align's
The servo placement
The boom clamping
The skid leg material - like Gorilla Gear
The carrying case it comes in. I'd probably pay $40 bucks for it, and it's just cardboard! That's how handy it is.

The things I didn't like:
Steel canopy standoffs (plastic would save the frame in a crash)
Head Dampening: It comes assembled with overly soft dampening. You need to swap out one spacer on each side with the included larger ones.
The main head can rock back & forth a little on the mast.
The flybar control linkages limit the amount of cyclic you can set ( unless your radio has a cyclic ring function).
The blade quality could be better: It looks like the top and bottom halves of their mold were missaligned about .5mm

Compared to the T-Rex:
It was a lot easier to set-up and wire the Hurricane: less tools, more space, more placement options, no stripped hardware.
The tail: No comparison! The Hurricane tail is perfect.
Cyclic response: The T-Rex wins by a mile. Cyclic ring could help the Gaui.
Collective response: The Hurricane has effortless collective (long blades & light weight). And you can dial in a bunch if you want.
Hangtime: The Hurricane floats like a 450. Much more than T-Rex.
This Gaui ESC is lighter, has a better startup & runs cooler.
IMO the T-Rex sounds better than the Hurricane.

Overall, this has been a great flying, completely trouble free helicopter so far. I highly recommend it!

T-Rex 550, E-Sky D550

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03-21-2010 10:31 AM  8 years agoPost 24
helipr0

rrNovice

Molenstede/BELGIUM

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Cool rotornoggin!
Can you say something about stability differences between 255 and 250?
I had impresion that 255 is a little bit less stable than 250,but like I said in my inbox thread,I flew 250 ages ago...

255 is a little screaming monster

Team Gaui
Team Hacker TopFuel
Team KBDD
www.youtube.com/helipr0

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03-21-2010 03:50 PM  8 years agoPost 25
rotornoggin

rrNovice

Florida

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Hello Helipr0,

I improved the stability and reduced vibration by doing the following:
Epoxied the main rotor head to the mast to prevent it from rocking back and forth. I wish the part came drilled with a tighter clearance. That modification improved all aspects of flight for me. The wider 3D spacers next to the dampeners are a must. Also, I removed the plastic spacers inside the main grips (between the bearings) which eliminated a lot of in-out slop of the grips. There is very little slop in the head now.

The Gaui swashplate is IMO much better than the sloppy T-Rex swash I got. I feel that is a critical area.

There is zero slop in phasing: Try rotating the grips against each other and check for the washout assembly rotating. My T-Rex does, my Gaui doesn't.

IMO the Gaui 255 flies smoother and "larger" (no surprise) than the T-Rex 250.

I never bothered switching out the heavy flybar weights, but I will do that next to speed-up the cyclic a little.

T-Rex 550, E-Sky D550

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03-22-2010 03:39 PM  8 years agoPost 26
helipr0

rrNovice

Molenstede/BELGIUM

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Thanks for response.
Interessing mods,I haven't noticed any problems with dameprs,the head or blade grips yet but I now I know what can I excetp...

Thanks.

P.S. I removed my flybar weights and I think its more stable and much more responsive!

Team Gaui
Team Hacker TopFuel
Team KBDD
www.youtube.com/helipr0

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04-19-2010 09:43 PM  8 years agoPost 27
pilothung

rrNovice

vietnam

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I have tryed Gaui 255
here is my video clip with poor skill.

http://www.youtube.com/watch?v=68Ru8ePv9i0

http://www.youtube.com/watch?v=k7Qij9icBRw

it is very fast but you can add just the Swash F or set some expo.

steady heli,

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04-21-2010 03:38 PM  8 years agoPost 28
rotornoggin

rrNovice

Florida

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I've got 45 flights on mine now. HS-65HBs on cyclic and Align GY780 w/ DS420 on the tail. Using the small flybar weights.

I got a great deal on a CC Phoenix 25 at Mike's RC Hobbies in Atlanta and decided to swap-out the Gaui 18 for the 25 Amp. You guessed it - it's a lot better. The ESC was obviously the bottle neck of the power system. I'm using NRG 3S 860 25C batts.

The extra power actually twisted the pinion loose. Re-glued the pinion with red (stronger) threadlock. While I was at it I moved the motor to the front mounting location so the battery can go all the way back on the tray (ESC at the front of the frame).

Basically it's the same weight as a T-rex 250 but with 2 inch longer blades and a great tail. Great for 3D (when the wind cooperates). I'm really happy with it. Definitely a keeper.

T-Rex 550, E-Sky D550

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