Rex-500 Flybar-less Question

[blade strike]

Can someone take a look at my mod and see if this will work? I ordered a GAUI GU-365 to test out and didnt want to spend much money on the head until I know the GAUI GU-365 works to my liking.

Any help would be great!

Ken

[desert_flyer]

Ken,

IMO you're not going to find out how well the gyro works with a poor head setup. Having setup several flybarless systems I can tell you that the mechanics should be optimized above all else. Mixing levers tend to introduce slop and delta in the system and you may find it difficult to get the optimum servo throws. Mikado makes a very nice conversion package that extends the blade grips and comes with a very nice swash follower. I originally had my Trex 500 setup with a DIY head like yours but it had all kinds of wobbles. Switched to the Mikado setup and it flies like its on rails. At the end of the day, an extra $60 make a HUGE difference. Readyheli sells 'em.

EDIT: Also, the servos make a big difference - the faster the better.

[RC Man]

I agree – a modified stock head just doesn’t seam to ever work out that well with flybarless. The main problem is to get the geometry correct you need grip arms that are further from the center.

A Kasama Cyber head would be my choice.
http://www.runryder.com/helicopter/t448437p3/?p=3781413
http://www.grandrc.com/k_fibarless



:) :cool:

[blade strike]

thx for the info guys, I will just get the Mikado setup!

[Happy|Harry]

you could get the required parts for about $30, gaui part numbers 204707 (8mm shaft swash follower, $24.90 (http://flying-hobby.com/catalog/product_info.php?cPath=232_236&products_id=3888)) and 204706 (grip ball link exstensions and longer push rods, $4.95 (http://flying-hobby.com/catalog/product_info.php?cPath=232_236&products_id=3887))

phil

[blade strike]

lol, Just ordered the Mikado setup and just got the order shipped notice from RH... That does look like a better deal :( Only if RH wasnt so fast :p

[desert_flyer]

Relax - you made a good choice - the Mikado setup has the nicest swash follower - it is rock solid. I have had problems with some swash followers but not with the Mikado. After 40-50 flights it is as tight as a bell.

The Gaui setup doesnt bring the blade grip balls out further from the center, it simply extends them to the centerline - this means that the servo travels will be low and thus lacking resolution.

[blade strike]

Relax - you made a good choice - the Mikado setup has the nicest swash follower - it is rock solid. I have had problems with some swash followers but not with the Mikado. After 40-50 flights it is as tight as a bell.

The Gaui setup doesnt bring the blade grip balls out further from the center, it simply extends them to the centerline - this means that the servo travels will be low and thus lacking resolution.

great info, I didnt notice that the mikado moves the ball out from center and to 90... thx!!!

Not expecting much from the gaui vbar unit but who knows :confused:

[Bunyan]

BS, I was reading on the German forums that they are having decent success with the GU365 on a 450 sized heli. So I'm sure it will work even better on a 500.

They did mention that it will be OK for a "regular" pilot but if you're going to want to slam it around you'll notice the difference to say a V-bar or an AC-3X.

But for the $$, why not give it a shot.

[blade strike]

But for the $$, why not give it a shot.

That's what I thought! My main concern is the tail gyro but only time will tell. I kinda wish I knew what their def of a regular pilot means? I am by far a hot 3d pilot but if it holds up to my stick banging 3d then I will be happy :D

Bunyan -

Have you tried the sk-360? If so how is it compared to the ac-x3? Also do you know how us US folks would get a ac-x3?

If this doesnt work I will be saving and getting an sk-360,vbar or ac-x3 (if I can find one)

[Bunyan]

Hey,
I had one of my buddies in Germany pick up the AC-3X and then mail it to me. If that wasn't allowed for some EU reasons...that never happened. :cool:

Below is what the German guy found by testing the GU 365 in a MT 450 (also a video link of maiden).

Also meine ersten Erkenntnisse
Here are my first impressions
1. kein Vergleich zum AC3X, da merkt man jeden Euro.
1. No comparison to AC3X, you really notice every extra $$ spent
2. für Bolzer sicher klasse Teil ist sehr schnell und direkt, werde mal an meinen Flugstiel feilen.
2. works well for stick bangers. It's very fast and direct. Need to touch it up to my flying style.
3. Sehr einfach eingestellt, auch mit Potis kommt man zum gewünschten Erfolg
3. Easy to set up.
4. Zwei Sachen die Fehlen einfach und müssen nachgebessert werden, getrennte Limiter Einstellung fürs Heckservo (oder hab ich was überlesen) , und ein Pitchausgleich fürs Heckservo.
4. Two things that are missing that will have to be worked on down the road, split limiter settings for tail (maybe I messed something up on setup?) and a pitch compensator for the tail.
5. Für den Preis gibt nichts Besseres.
5. For the price there isn't anything better at the moment.

http://www.rcmovie.de/video/40875b5fcc94cfc354c6

I have both the AC-3X (Rex 450 & SJM 180) and a v-bar (T-500). Both of them work extremely well. I have not flown the SK 360, but have seen good results with that one as well on a 500 but not so good on a 450. I can't really say anything good or bad about it since I haven't flown one myslef though.

[blade strike]

Hey,
I had one of my buddies in Germany pick up the AC-3X and then mail it to me. If that wasn't allowed for some EU reasons...that never happened. :cool:

Below is what the German guy found by testing the GU 365 in a MT 450 (also a video link of maiden).

Also meine ersten Erkenntnisse
Here are my first impressions
1. kein Vergleich zum AC3X, da merkt man jeden Euro.
1. No comparison to AC3X, you really notice every extra $$ spent
2. für Bolzer sicher klasse Teil ist sehr schnell und direkt, werde mal an meinen Flugstiel feilen.
2. works well for stick bangers. It's very fast and direct. Need to touch it up to my flying style.
3. Sehr einfach eingestellt, auch mit Potis kommt man zum gewünschten Erfolg
3. Easy to set up.
4. Zwei Sachen die Fehlen einfach und müssen nachgebessert werden, getrennte Limiter Einstellung fürs Heckservo (oder hab ich was überlesen) , und ein Pitchausgleich fürs Heckservo.
4. Two things that are missing that will have to be worked on down the road, split limiter settings for tail (maybe I messed something up on setup?) and a pitch compensator for the tail.
5. Für den Preis gibt nichts Besseres.
5. For the price there isn't anything better at the moment.

http://www.rcmovie.de/video/40875b5fcc94cfc354c6

I have both the AC-3X (Rex 450 & SJM 180) and a v-bar (T-500). Both of them work extremely well. I have not flown the SK 360, but have seen good results with that one as well on a 500 but not so good on a 450. I can't really say anything good or bad about it since I haven't flown one myslef though.


Thanks for the great info man!!!

Ken

[jameotron]

That video isn't really very helpful. The best ways to tell how effective a flybarless stabilisation system are: how does it handle pitch up in fast forward flight, and how does it handle hard elevator and aileron stops.

[Happy|Harry]

The Gaui setup doesnt bring the blade grip balls out further from the center, it simply extends them to the centerline - this means that the servo travels will be low and thus lacking resolution.

yeah that's correct for the rex500, i never realised that it had that type of blade grips so my mistake, where as for the H425/H550 the parts linked to above does indeed bring the balls out farther, this is due to the different style grips on the hurricanes. as for the swash follower i can say with 100% certainty that it is a solid unit just now, but i'll post once i've put a good few flights through it to see how it holds up :)

phil

[learninginverted]

Ken,

IMO you're not going to find out how well the gyro works with a poor head setup. Having setup several flybarless systems I can tell you that the mechanics should be optimized above all else. Mixing levers tend to introduce slop and delta in the system and you may find it difficult to get the optimum servo throws. Mikado makes a very nice conversion package that extends the blade grips and comes with a very nice swash follower. I originally had my Trex 500 setup with a DIY head like yours but it had all kinds of wobbles. Switched to the Mikado setup and it flies like its on rails. At the end of the day, an extra $60 make a HUGE difference. Readyheli sells 'em.

EDIT: Also, the servos make a big difference - the faster the better.

Hey guys, i have a raptor 50 and was looking at moving to a flybarless set up. Does anyone know who sells a head that is suitable for my requirements as u mention? Thanks

[masa]

Hi.
I have both SK360(Trex600e) and GU365(Trex500).I use stock linkage parts for them.Pic are my trex600.

My SK360 works fine.
(Recent Video:http://eyevio.jp/movie/181324)

Here are my impressions,compared GU365 with SK360.
1.Tail gyro works fine.enough for beginner's class 3D pilots.
2.When you make a stick neutral(hovering,forward flying),GU365 never make stable your helicopter.
3.But,when you move cycric sticks, GU365 does not lose stability.
4.Cycric rates are very sensitive to value of Swash Mix in Tx. And are very sensitive to how you move cycric sticks.
5.Easy setup about Digital flybar system.but it's difficult to set up for your fingers.SK360 can get better performance easy and promised.I do not recommend GU-365 to a beginner.

I think that it is difficult to compare them in the same viewpoint. There are just a few functions that GU365 owns when compare it with SK360.
I continue testing GU365,in particular about the ratio of the mixing levers.

Sorry bud English.
masa

[blade strike]

Well I will be doing my first flights this weekend with the gu365. If I dont like I will put it up for sale and get the SK360 ;)

[blade strike]

Here are some quick pics of the mikado kit, quality parts but alot of money for what you get :rolleyes: ... I should have her in the air by tomorrow!

[Bunyan]

Yep, got the same settup on my 500 and am running a V-bar and it works flawlessly.

You're going to love the upgrade. :D

[masa]

Here is my Trex500/GU-365 video.
http://eyevio.jp/movie/182222

The stability of GU365 takes influence of vibrating very much.
How to use double-sided tape influences stability very greatly. It will be necessary for you to carry out measures for the vibration if the drift of the tail occurs.

masa

[blade strike]

I was thinking, I am just going to buy a sk-360. My loss your gain, if anyone wants a new never flown gu365 go to the forsale forum. Can save yourself some $$$

[BUDY KOESNADI]

Hi.
I have both SK360(Trex600e) and GU365(Trex500).I use stock linkage parts for them.Pic are my trex600.

My SK360 works fine.
(Recent Video:http://eyevio.jp/movie/181324)

Here are my impressions,compared GU365 with SK360.
1.Tail gyro works fine.enough for beginner's class 3D pilots.
2.When you make a stick neutral(hovering,forward flying),GU365 never make stable your helicopter.
3.But,when you move cycric sticks, GU365 does not lose stability.
4.Cycric rates are very sensitive to value of Swash Mix in Tx. And are very sensitive to how you move cycric sticks.
5.Easy setup about Digital flybar system.but it's difficult to set up for your fingers.SK360 can get better performance easy and promised.I do not recommend GU-365 to a beginner.

I think that it is difficult to compare them in the same viewpoint. There are just a few functions that GU365 owns when compare it with SK360.
I continue testing GU365,in particular about the ratio of the mixing levers.

Sorry bud English.
masa


Dear Masa,

Have you or your friend ever tried the GU-365 on TRex-600E ?
May I know the result ?
Please advice.
Domo arigato gozaimasu.

Budy
Western Australia

[masa]

Dear Masa,

Have you or your friend ever tried the GU-365 on TRex-600E ?
May I know the result ?
Please advice.
Domo arigato gozaimasu.

Budy
Western Australia

Sorry,
I do not know who tried it on T600E.
May be it will work T600E too.But you must remember that GU365 is cheap system for cheap small helicopters.
I recommend better FBL system in Trex600,such as SK360.

masa

[bmaaa]

Hello,

I am also going to go FlybarLess on my Hurricane 550.

2 questions:

1 - Does a flybarLess system need STRONGER servos. I am indeed wondering if the Futaba S9650 Mini-servos (30 grammes, usualy recommended for the Hurricane 550) will be OK also with a flybarLess system or if I need in this case some stronger servos ?


2 - I think that I will instead go for the Robbe Helicommand RIGID system. It seems to be also able to provide some "auto-stability/auto-pilot " that the other electronic flybar systems don't ? Is it right ?

thanks