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08-15-2018 06:15 AM  3 months agoPost 1
antja

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Levin new zealand

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I have a castle Phoenix Edge 50 that I want to use to control the tail motor on a scale heli ,can this be set up with governor without setting TX end points, I already have end points set on a castle 160 controlling the main rotor. I want to use the castle 50 as a switch on/off control. any help would be appreciated.

Tony.

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08-15-2018 10:52 AM  3 months agoPost 2
Flyin for Jesus

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Troy, IL. 62294

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You need to set endpoints else it will never see 0 throttle and arm.

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08-15-2018 11:42 AM  3 months agoPost 3
antja

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Levin new zealand

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I don't want to control it with the throttle just to be able to switch it on and off with a switch on the TX.

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08-15-2018 11:50 AM  3 months agoPost 4
Magnumeng

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Good old NC

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First set up like normal esc...

Second what ever switch you put it on needs to read zero at start up to initialize.

TDR, Kontronik Kosmik Cool 200, Kontronik 750-56, CGY750,
Team KBDD

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08-15-2018 12:31 PM  3 months agoPost 5
Dan Minick

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Columbus, WI

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You need to set the endpoints with the switch(channel) on your radio you are using to start and stop the tail. The controller does not care what channel you use as long as it has a valid signal.

Team Synergy, Team FBL Rotors-------if its not broke...it will be!

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08-15-2018 03:37 PM  3 months agoPost 6
Flyin for Jesus

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Troy, IL. 62294

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It would be a bad idea to control it with the throttle. Either a switch or setup a mix that the tail motor runs up at anything above 0 throttle.
Many options, but at least the lower endpoint needs to be set in order to arm the ESC .

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08-15-2018 06:32 PM  3 months agoPost 7
Chuck Bole

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Tulsa Ok. U.S.A.

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I did this with a Synergy E9 several years ago. Used a slider to control a aux channel zero at one end and somewhere around 80% at the other end. Used a Kontronik Jazz 80 for the tail motor. I'd spin the tail motor up then flip off hold to start the main rotor.

Watch at Vimeo

chuck

Team Synergy Field Representative / Scorpion / Thunder Power

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08-15-2018 07:51 PM  3 months agoPost 8
ticedoff8

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Morgan Hill, CA. USA

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I don't mean to hyjack this thread, but I have a question:
Why would you want the tailrotor to spin using a governed (fixed) RPM?

I assume the tailrotor blades will be variable pitch (like a typical TR) so you will have yaw control.

But, a typical transmission-driven tailrotor's RPM is related to the headspeed.
I would think this relationship would be factored in to the use of a direct-drive tailrotor.
It wouldn't use governor.
It would use "multi-rotor" mode and a throttle signal to slightly vary the RPM in relationship to changes in the headspeed.
And then use the variable pitch tail blades for yaw control.

The mainstream approach is to use a fixed-pitch tailrotor with and ESC where the throttle input is controlled as a separate throttle channel.
There are comments on HF's MSH Brain forum where people have commented on using that gyro to run a direct-drive, fixed-pitch, tailrotor.

Is the design's assumption that a fixed (and stable) RPM is good enough and the tail blade's pitch will be good enough to overcome headspeed variations?

I see the attraction of this concept in a scale model.
It totally eliminates the complexity of a transmission-driven drive system.

Believe 1/2 of what you see and none of what you hear.
Fake News will be the downfall of our Republic!

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08-15-2018 09:01 PM  3 months agoPost 9
Flyin for Jesus

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Troy, IL. 62294

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I'm going to assume the OP is wanting to run a low HS with 3 or more blades but doesn't want to run large tail blades in order to have tail authority.
Just guessing here, I want to see what the OP says.

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08-15-2018 10:17 PM  3 months agoPost 10
antja

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Levin new zealand

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the heli in question is a 2m Huey ,rotor disc is 2.150m mechanics are a mixture of Vario and Goblin I am using a 940kv motor mounted in the tail fin driving through a Vario gearbox, with 150mm tail blades giving a tail disc of 375mm, not sure what tail speed I need hence the reason for trying to govern it, if I run the tail on 2s I get 6956rpm or 3s at 10400rpm.

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08-15-2018 11:36 PM  3 months agoPost 11
ICUR1-2

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Ottawa, Ontario

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I would assume the tail rotor needs to spin any where from 3.8:1-4.5:1 for 1 rotation of the main blades.

spending time, paying attention

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08-15-2018 11:40 PM  3 months agoPost 12
antja

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Levin new zealand

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the main blades are totally independent of the tail blades 2 separate motors
so can run at any speed

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08-16-2018 02:59 AM  3 months agoPost 13
ICUR1-2

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Ottawa, Ontario

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antja
the main blades are totally independent of the tail blades 2 separate motors
so can run at any speed
Yes I realise that however most models have a 4:1 main to tail ratio.. must be a reason why

spending time, paying attention

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08-16-2018 03:48 AM  3 months agoPost 14
antja

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Levin new zealand

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I realize all helis are different,my BK117 with Vario mechanics is 5 to 1
just trying to find out what the optimum speed should be and how to govern it down to that speed.

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08-16-2018 04:22 AM  3 months agoPost 15
Flyin for Jesus

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Troy, IL. 62294

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Its will be easy to run it too slow, you'll lose tail control and start piroetting, maybe crash.
Too fast is a lot harder. Unless it spins so fast it flies apart, otherwisw you can't really go too fast.

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08-16-2018 04:38 AM  3 months agoPost 16
antja

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Levin new zealand

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exactly what I was thinking ,faster would be better.

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08-16-2018 05:57 PM  3 months agoPost 17
Chuck Bole

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Tulsa Ok. U.S.A.

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I was shooting for 10,000 RPM. But depending on your head speed you may want to run less tail speed. I haven't tried it with a Castle ESC but you might get in touch with Eco8gator on here he has done this on a Joker 3DD.
https://rc.runryder.com/t826261p1/
chuck

Team Synergy Field Representative / Scorpion / Thunder Power

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08-16-2018 06:21 PM  3 months agoPost 18
RM3

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Killeen, Texas - USA

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wouldnt you be able to link the throttle channel and mix it into the tail rotor ESC channel? that way the tail rotor will spin at a constant RPM in relation to the Main rotor... any increase in main rotor can then affect total requested rpm of the tail...

but its all governed by the main rotor RPM.

showing a preference will only get you into trouble, 90% of everything is crap...

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08-20-2018 10:38 PM  3 months agoPost 19
antja

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Levin new zealand

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some good information here thanks guys ,still working on it.

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