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HomeScale✈️AircraftScale HeliScale Helicopter Main Discussion › Help-Need tail, 401 gyro, and 9303 setup info for a Jetcat Vario Huey
01-08-2013 02:58 PM  7 years ago
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Pilot1

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NY. USA

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Help-Need tail, 401 gyro, and 9303 setup info for a Jetcat Vario Huey
Hi,
I purchased a turn key Jetcat Vario Huey and before I fly it, I wanted to know from guys already flying this bird what the 401 gyro, and 9303 setup is for the tail....

I did some ground checks and the tail doesn't seem to hold??
Thanks
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01-08-2013 07:28 PM  7 years ago
Notar

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Taxachussetts

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Need more info;
Tail blade size, length and chord
Main blade size
Head rpm

Joe
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01-08-2013 08:48 PM  7 years ago
Pilot1

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NY. USA

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01-08-2013 08:57 PM  7 years ago
Notar

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Taxachussetts

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Measure the tail blades for me. Since you purchased this, you are assuming it was built properly.
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01-09-2013 06:23 AM  7 years ago
bmfrd

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Maryland

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Did you see the heli fly before you purchased it. The 9303 is a good servo but is analog and a bit slow for the tail. Usually, a digital servo with faster response time is used on the tail. Check to see if the gyro is in heading hold or rate mode,is the light solid red or flashing. If its solid, then it's in HH. If not, its in rate mode. I would then check the pitch slider. Joe can correct me if I'm wrong but the arm that is connected to the servo should be perpendicular to the boom. The servo horn should also be at the mid way point with no input.
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01-09-2013 12:37 PM  7 years ago
Totto

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Norway

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Hello,

I have this model. Hope i can help a bit.

http://www.vario-helicopter.biz/gb/...oducts_id=38017
Do you have the JetCat PHT-3-3 installed in your Huey ?
What headspeed do you have ? (Should be 962 rpm if Pht 3-3)

http://www.vario-helicopter.biz/gb/...oducts_id=37925
Do you have these main rotoblades ?

http://www.vario-helicopter.biz/gb/...oducts_id=36804
Do you have these tailrotorblades ?

Tailrotor:
Tailservo horn 90 deg on the servo and tailpitch slider horn 90 deg (parallell)
Then the tailrotorblades should have positive pitch already. If not you have something wrong in the setup and the tailblades will not have enough authority to hold the tail. This is very important. If not you could loose your model if not enough ”tailauthority”.

I am not familiar with the 9303 servo.

I use a digital Futaba S9452 for tailservo.
Use good servos all over.

I use a Futaba 401 in HH
Solid red light when set powerswitch to ON avcs heading hold Futaba radio
Gain is 71 %.
The model flies very good on this setup.

Here is my model build up if it can be of any help further.
http://www.tottoshobby.net/Huey/205.htm

Good luck !

Best regards
Totto
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01-09-2013 03:04 PM  7 years ago
doorman

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Sherwood, Arkansas

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💎Sustaining Member
9303 Not A Servo...
The 9303 is a tx.. and he is looking for the set up for that.. between Joe and the info and questions that Totto has supplied, you should be able to get a good idea of what you need on this heli..

If you give them the proper info that they are asking for, they might be able to help you out..

Do you have anyone in your area that runs a turbine heli?? That could also be a good help..

Good Luck with your new heli..

Stan
AMA 2918-Team Spin Blades,,Castle Creations, Unique Aircraft
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01-09-2013 04:00 PM  7 years ago
Pilot1

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NY. USA

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Hi Guys, the 9303 is the JR radio that it came with. I will upgrade the 9202 to a Futaba S9452 for tailservo. I'll also check to see what the 401 mode is.

The Huey has the JetCat PHT-3-3 installed, runs great! The headspeed is set to 962 rpm.
Thanks everyone, all good info!
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01-09-2013 04:04 PM  7 years ago
Pilot1

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NY. USA

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http://www.vario-helicopter.biz/gb/...oducts_id=38017
Do you have the JetCat PHT-3-3 installed in your Huey ?
What headspeed do you have ? (Should be 962 rpm if Pht 3-3) YES

http://www.vario-helicopter.biz/gb/...oducts_id=37925
Do you have these main rotoblades ? YES

http://www.vario-helicopter.biz/gb/...oducts_id=36804
Do you have these tailrotorblades ? YES
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01-10-2013 01:58 PM  7 years ago
Notar

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Taxachussetts

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If you have a 9202 for the tail servo, that is your problem. Pick up a Futaba BLS451 for the tail. On the big models speed is not required, torque is.
Joe
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01-13-2013 04:14 PM  7 years ago
Pilot1

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NY. USA

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Ok, I replaced the tail servo from a 9206 to a Futaba S9452.

Totto, can you tell me what your 401 gyro is set to with delay, limit, and Dir?

I'm a Futaba guy, but the Huey came with a JR 9303 radio and setup, so the menues are differnt to me.

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01-13-2013 06:03 PM  7 years ago
Star1

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San Jose CA

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I think you are missing two mounting screws on your tail servo?
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01-13-2013 06:43 PM  7 years ago
Pilot1

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NY. USA

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Nope, I was taking them out to replace the servo when I took the picture..4 screws are back in.
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01-13-2013 10:16 PM  7 years ago
G-Limo

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Europe

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Can you post the Head to Tail gear ratio and the tail rotor speed??

I run my 1/5 scale Turbine Long Ranger and Zealous with a head speed @ 1180rpm and the tail around 6000. This tail speed gives very good authority with the Futaba 401's, 9253/9254 servo and SAB 130mm Blades.

Providing the servo/tail pitch has no binds, I wouldn't think you need a super fast servo especially with the mass of the machines we are talking about!!

/Limo
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01-14-2013 08:04 AM  7 years ago
Totto

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Norway

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Hello Pilot1

Reg the 401 gyro. (heading hold HH)

Sorry, but i cant give you the exact reading in limit since the gyro is in the bottom of the cockpit floor. But normally i have this (in my models).

Delay: No

Limit:
left / right rudderstick movements. Try to get as close to 100 as you can. (80-100 area)

Dir:
First, you have to set the correct direction left / right in your radio. (servoreverse ie)
2nd - Then check the direction by moving the tail side to side to see if the tailblades is doing the correct
opposite movements. If you see that the tailblades are not moving correctly change the "dir" dip switch.
Be 100 % sure to see if what you have done is correct. If you are not sure. Recommend to ask someone to verify.

Remember to put the (ds) dip switch to "on" (up) since its a digital servo you use.

Good luck!

Best regards
Totto
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HomeScale✈️AircraftScale HeliScale Helicopter Main Discussion › Help-Need tail, 401 gyro, and 9303 setup info for a Jetcat Vario Huey
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