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Gaui EP200 › New V2 tail, any slop?
01-13-2009 12:23 AM  9 years agoPost 21
noz

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cheshire

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Technex
If it's the belt version you've got, you don't have to change the pulley. The align pulley is the same mesh as the gaui belt. The only thing is that the align pulley has small lips on the outer edge of the pulley (it's to wide for the tail frame on the gaui) you have to shave off the lips. Put the shaft in a drill spin it up and just remove it with a knife.

BTW don't order the metal upgrade version of the align pulley!

As for the rest of you i was expecting the negative comments about align tail hubs. How many align helicopters are sold compared to gaui
I bet if you put it in percentage the gaui v1 when release had a higher rate of moans about the tail then the align 250. Which btw is now sorted.

I can't remember what the microheli tail cost but roughly double the cost of the align (£15)

Rotorhead
The problem with the gaui tail is mostly the slider have slop so why change the grips. The align grip will not fit correctly to the gaui hub and if you were to use the align grips+hub only, then the align hub won't fit the gaui tail shaft because the gaui is threaded on the end. So you friend was on a loser before he started.

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01-13-2009 05:01 AM  9 years agoPost 22
rotorhead58d

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Hamburg, PA...USA

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noz, get in touch with buzzkill on the issue of the align tail grip mod. he flew it and hated it. and he said the quality was not as expected. i could care less either way, just passing info dude.

and most people were having problems with the gaui tails because it was not set up properly. too much pitch in these 200's and it takes away from the tail authority. more pitch isn't better with this heli. i run around +-9, and my one year old V1 tail holds as good as when i bought it.

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01-13-2009 10:12 AM  9 years agoPost 23
LaurenceGough

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UK

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noz, it's the SD. Just wanted to confirm the SD Gaui tail will work with the Trex 250 tail shaft/case etc.

rotorhead58d, I brought this as a 3D heli. The climb rate isn't the best in the world as it is, even with 100% headspeed. I'm sure a decent tail can hold it. The V1 tail is crap, it is all over the place even on the bench, way to much slop.

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01-13-2009 10:53 AM  9 years agoPost 24
Buzzkill2

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Chicago IL

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Here's my $.02

I've tried every tail that I'm aware of that will work on a on a Gaui 200.

1. Make sure your head-speed is high.
2. If your bogging, you have too much pitch and the tail will kick.
3. Get the CNC bell crank and install a CF rod instead of the stock tail link rod.
4. Make sure the limits/travel on the tail servo are set correctly.
5. Use a good gyro.

Like I said earlier, I've tried ever tail that I know of that will work on the Gaui 200 including using Align 250 parts.

Here's my take on the tails:

Gaui V1 tail. Will hold fine if setup correctly. Will wear out quickly and has some slop.

MicroHeli tail. MH tail is very good. Very little slop. I have been using two for over a year with no issues at all.

Gaui V2 tail. Best out of all the tails I've tried. Very little slop, huge improvement in the durability dept. over the V1. They should have come with the CNC bell crank stock IMO though.

Align 250 bits. Save your money and buy a V2 tail and CNC bell crank instead.

The Align 250 tail shaft, slider, hub/grips will work with some modifications (belt drive 200 version). You can either shave the flange off the plastic pulley (not recommended as it negates the bearings without the flange, it will rub the outside of the bearings) or you can use the three brass spacers found in the Gaui 200 hardware pack to accommodate the wider pulley. I found the Align 250 tail bits to be inferior to even the V1 bits in quality. The hub is a mess so make you you get the "new" fixed one if your going to try it. The grips have the most slop out of the four I've tried. The ball link on the bottom of the slider is larger than the Gaui ball link so it will sit but not be "seated" in the bell-crank properly. even if the ball link was the same size the 250 slider sits higher than the 200 slider so they don't line up properly. I have at least 12 Gaui tails and all of the hubs/grips have less slop than the Align 250 counter parts I tried. Most of the slop issues I'm aware of with the V1 tail hub/grips is due to people thinking that when they slide toward the center of the hub this is slop. it's not. The centrifugal force of the tail rotors hold the grips in the right position relative to the bearings/hub when spooled up.

I haven't tried the 250 parts with he SD version but I believe you'll need even more spacers to get it to work.Not worth the money or time IMO.

If you want to try some Align parts that may improve your tail performance, try the 42mm square tail rotors. I've had great luck with these. You'll need a bigger tail fin though as the 42mm 250 tail rotors are longer than the stock 200 rotors and will strike the ground left in stock form. Try a MH blade CP tail fin, drill two holes and install or you can do like I did and use two of the frame spacers and longer screws (I used the ones from the CNC swash guide to fit the aluminum frame supports) between the frame and the rear LG strut. This will raise the tail quite a bit. Tail rotor strikes will still be possible like this so as always, avoid them.

The V2 tail is a big improvement over the V1 tail IMO mainly because it's no longer uses CF side plates (they tend to wear causing vibrations). The new arm on the top of the slider helps eliminate any minor binding on the tail shaft and helps keep the slider ball link in sync with the bell crank.

This is just my experience and opinion. Yours may vary.

Gaui. Good people, Great helis.

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01-13-2009 11:07 AM  9 years agoPost 25
Buzzkill2

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Chicago IL

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Technex:

Try a 16T pinion (2.3mm .4 mod). I got 4110k head-speed from the stock motor at zero pitch with one. That's almost as good as the 5150 on the stock pinion. I tached 4650k with the 5150. Both on a 2S.

The climb-out rates are wicked fast with both setups. I'd try the 16T pinion first, it's only a few bucks as opposed to $20 for the 5150 (which still ain't bad).

Some guys are testing 3S setups as we speak. I tried a 5150, 15T pinion on a 3S setup but ripped a grip from the head (not recommended).

Ray Stacy is the guy to talk to. He has by far the most experience with the Gaui 200.

Gaui. Good people, Great helis.

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01-13-2009 11:16 AM  9 years agoPost 26
snsn

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NJ

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Can you tell me where to buy

i) a 16T pinion (2.3mm .4 mod)
ii) the CNC bell crank

thanks

Gravity Works...no, the other left. ok,ok

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01-13-2009 11:19 AM  9 years agoPost 27
LaurenceGough

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UK

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Thanks for the help! Well so far I've tried upping the tail rotor speed by using a larger pinion for the tail (SD so I can choose).

2100T gyro, set up correctly for no drift in rate mode. Futaba S3153. Carbon push rod. Limits set correctly. Flat 100% curve. I can't hear the motor bogging but I can see the tail kick out, sometimes up to 90 degrees, really crap hold, worst I've seen. Hovering without adding any collective is fine, as is sideways flight.
I have both bushings and bearing.
I can not tell a difference in performance. Both work very well.
I know you're sponsored but is this really true?... (or at least do the bushings hold up longer than a weeks?)

I think you're using bearings in this video here:

http://www.youtube.com/watch?v=BTj51fibd0A

The tail looks rock solid in that vid, that's what I want, like my 450's.

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01-13-2009 11:22 AM  9 years agoPost 28
Buzzkill2

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Chicago IL

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You can get a pinion that will work here: http://www3.towerhobbies.com/cgi-bi...CH=2.3mm+pinion

or you can use the SJM 180 pinions available from RC-Tek. I'm sure there are other places as well.

You can get the CNC bell crank here: http://www.helidirect.com/index.php?cPath=30_321_397

Gaui makes a alum. bell crank also. I'll try to find it.

Gaui. Good people, Great helis.

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01-13-2009 01:29 PM  9 years agoPost 29
rstacy

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Rochester, NY

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I know you're sponsored but is this really true?... (or at least do the bushings hold up longer than a weeks?)

I think you're using bearings in this video here:

http://www.youtube.com/watch?v=BTj51fibd0A

The tail looks rock solid in that vid, that's what I want, like my 450's.
Being sponsored doesn't require me to post things that are false. Yes it is really true and it will hold up longer than a week.
It does surprise me though to see the problems that some people have. The V2 in the video that you reference gets beat on many times a week, every week and it has almost all of the original parts that were on it when it was built. The tail rotor servo servo was changed to try a different servo and it has had multiple sets of blades for testing.

Buzz and Rotorhead are correct in that the V1 tail and the V2 tail work just fine when set up correctly. The V2 has a nice improvement in tail rotor pitch control that lets you run a higher gain.
In the video that you listed, we used a Futaba 3154 tail rotor servo and 401 gyro. As you mentioned, the tail was solid and never blew out.

The key to getting this performance is a good gyro/servo combo, proper travel set up, and don't over pitch the head.

Buzz's suggestion for longer tail blades is a good one.

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01-13-2009 02:12 PM  9 years agoPost 30
LaurenceGough

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UK

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Sorry, I didn't mean it in a offensive way at all, although it does look like it in my post. Just don't get why they offer only bearings for the first few kits and from then on they only offer bushings. (Like get good reviews first kind of thing)

Do you have any videos of you flying with the bushed tail?

So you are using different blades too in that video?

At the end of the day I would be happy with the Gaui V2 tail and the bearing arms.

Thanks!

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01-13-2009 02:21 PM  9 years agoPost 31
rstacy

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Rochester, NY

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Do you have any videos of you flying with the bushed tail?

So you are using different blades too in that video?
No offense taken. I just wanted to clear up any misconceptions. Only a couple of people have ever managed to offend me

I don't think I do have any bushed tail videos. This weekend is predicted to have a high of -7. If that is wrong and we can fly, I will post a video.

The tail blades in that video are stock (they came with machine and are the same blades that everyone else gets)

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01-13-2009 02:27 PM  9 years agoPost 32
LaurenceGough

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UK

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Alright thanks very much for the help, don't worry about the video unless you're planning to fly and don't mind. Would be very nice to actually see it flying on the bushed tail.

The V2 tail blades and the V1 I think are meant to be the same other than the color right? I will pick up some V2 blades anyway if in stock.

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01-13-2009 02:33 PM  9 years agoPost 33
rstacy

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Rochester, NY

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The V2 tail blades and the V1 I think are meant to be the same other than the color right? I will pick up some V2 blades anyway if in stock.
It looks that way to me.

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01-13-2009 02:42 PM  9 years agoPost 34
USNAviationjay

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Houston Tx USA

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I have the V1 SD tail but after I broke it replaced with the MH SD tail.
it holds great and is very smooth.

I don't know what all the fuss is about. Yes stock had too many parts and wasnt the best but the MH SD is solid and simple.

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01-13-2009 03:12 PM  9 years agoPost 35
snsn

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NJ

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MH SD tail.
Which tail is this...
do you have a link...
thx

Gravity Works...no, the other left. ok,ok

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01-13-2009 03:14 PM  9 years agoPost 36
USNAviationjay

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Houston Tx USA

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sure ill find a link for you.

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01-13-2009 03:17 PM  9 years agoPost 37
USNAviationjay

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Houston Tx USA

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http://www.helidirect.com/product_i...roducts_id=8986

here it is.. very simple.. I do recommend getting the aluminum arm to match it.

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01-13-2009 03:18 PM  9 years agoPost 38
snsn

rrApprentice

NJ

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thx

Gravity Works...no, the other left. ok,ok

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01-13-2009 04:40 PM  9 years agoPost 39
rotorhead58d

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Hamburg, PA...USA

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http://www.helidirect.com/product_i...roducts_id=7875

i've also heard good reports from this version, but i have never tried it.

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01-13-2009 05:10 PM  9 years agoPost 40
noz

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cheshire

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Technex
Check your PM

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Gaui EP200 › New V2 tail, any slop?
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