View Full Version : 425 V2

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06-15-2010, 10:33 AM
check it out Gaui 425 V2 in Europe


06-15-2010, 12:24 PM
The X4 -- wow, pretty sweet! I searched for it on Google & found the following ...

From Feb:

Gaui 425 V2 Presentation:

06-16-2010, 02:03 AM
I could be wrong, but it looks kinda pricey to me. If I guessed right it would be about $530 USD. :wow2:

06-16-2010, 02:11 AM
That came out a while back - a mix of early 550 / 425 parts (head, gears etc.) and some X5 bits (frame desin etc.). Only from Pitch Up and expensive

07-14-2010, 12:56 AM
Any Swedish friends can kind enough to share more info about this V2

Love to learn more about its carbon frame... for my Hurri550:YeaBaby:


07-26-2010, 01:22 PM
Looks like the same head i'm running. but with a direct servo to swash diesign...

07-27-2010, 04:34 PM
It seems that this bird was a test bed to probe new servo layout, and frame design impact on performance. also to expose customers to something different from Gaui to gauge response. when it first came out there was a fair amount of 'chatter' about it, so I think Gaui decided to run with it and redesign the whole works ala the X5.

07-29-2010, 11:46 PM
Looking... Closely again at the motor mount location makes me wonders.. If bigger motor can is going to be an issue... Look how close those cyclic servo are to the motor...


01-01-2011, 12:46 AM
Any friend in/from Europe can share more info about this X4..:YeaBaby:

doesnt seem to see/hear alot about it..

01-01-2011, 04:32 AM
Pretty much what im building 425cf frame tt tail
x5 head, looks alot better than the plastic 425
finally gaui hears our crys

01-01-2011, 04:39 AM
So far im in 270$ that's including the fes x5 head, 60amp esc 504 motor
tt tail, cnc tail, cf frame, not bad for a higher end 425 heli.
all new parts

01-01-2011, 05:49 AM
Take a closer look at the X4..it has got no push/pull linkages veri neat :smokin:
I am on the 425 gf frame :YeaBaby:

share your pic, Fusionx00 :thumbup:

01-01-2011, 04:32 PM
Will do asap, im working crazy hours right now, ill do it sometime this week

01-10-2011, 06:34 AM
Here are some pics of my frame with the x5 yoke
and my torque tube tail, I guess I got the 425long one so I cut the tt drive down to fit
im using the gaui 425 _carbons

01-10-2011, 08:24 AM
Thanks for sharing...looks good.
good luck with the mod..:thumbup:

01-17-2011, 04:37 AM
Moving along on my build, mounted another cnc motor mount for my sk-720
im trying to keep it as far away from my electronics, and finally found the spindle bolts.
tommorow im going to mount my servos,esc,powerbus,tail,blades anything else missing
I will find out tommorow.
Im still gona get my canopy painted to say x4:)

01-17-2011, 09:43 PM
- WHat is the boom diameter of 425V2 ? Is it the same for 550?
- Do 425V2 boom same as that of Gaui X5?

Main rotor head
- What is the main shaft diameter ?
- Is the 425V2 main shaft same as that of Gaui x5 ?

thanks in advance

01-18-2011, 01:13 AM
i don't think there is a" v2" but the cf frame could be considered that

The boom diameter's are the same for the 425 and 550
the drives im not sure but the drives fit right in so they should be
I don't know the boom diameters

The main shaft is 8mm for the 425,550, and x5
I know this because I am using a x5 yoke on a 425 main shaft

The 425, are pretty much the same except the 550 uses a longer boom, and blades
Belt or ,torque drive which ever your using

01-18-2011, 01:20 AM
Main rotor head
- What is the main shaft diameter ?
- Is the 425V2 main shaft same as that of Gaui x5 ?

thanks in advance

diameter is the same, but length is different, see: http://www.helifreak.com/showpost.php?p=2579002&postcount=4

01-19-2011, 09:26 AM
Seebodener, fusionsx00,

Thanks for your info.


01-22-2011, 09:31 AM
Hi Jonathon,

Welcome to the world of Gaui :YeaBaby:

Looking forward to seeing the first X4 on our shore :P


01-24-2011, 01:09 PM
Whos getting a x4?

Dr Daniel
01-24-2011, 04:44 PM
microhelijon, you will love the X4, its nothing even close to the plastic fantastic 425/550.



01-24-2011, 07:41 PM
I have a carbon 425, with a x5 fes head
I think as close as you can get to the x4
mostly all cnc parts too
all im missing is the tail grips, mixing arms

To me it looks like a x5 frame with a 425 tail
hmm not a bad idea if u ask me

Dr Daniel
01-25-2011, 12:55 PM
No, the X5 frame is totally diffrent, and also much larger.