So confused!!!!

rrTV-PHOTO GALLERIES MY GALLERY HELP-FAQ

myHOME PM pmRR MEMBERS 229 ONLINE 6 EVENTS SEARCH REGISTER START HERE

WATCH

2 pages [ << < ( 1 ) 2 NEXT >> ] 488 views

POST REPLY

Scorpion Power	RunRyder

Home › Scale › ✈️Aircraft › Scale Heli › Scale Helicopter Main Discussion › So confused!!!!

04-20-2020 05:32 PM 42 days ago

Topic Vote

0Post 1

Tim W

rrNovice

Rancho Cucamonga California

MyPosts All Forum Topic

So confused!!!!

Okay my fellow heli folks. This is making me scratch my head! I have a Roban 700 size Bell 429. And recently I have experienced a weird issue with my tail rotor. What’s going on is intermittently I am losing my right pitch. At first I thought that it might be binding somehow? But after checking all the linkage and moving it both right to left it is free as can be. Then I checked the radio on monitor function (Spektrum DX7S) and everything looks good. Then the next thing I checked with the receiver battery hooked up I moved the helicopter left to right to see if the Gyro is functioning correctly. And it is. I am running the Spektrum BeastX. So when the heli is in flight occasionally I will lose tail rotor Authority when using the radio trying to move to the right. I also know that it has nothing to do with the radio because all my other helicopters function fine. So now I’m going nuts trying to come to some conclusion as to what the problem may be? Any ideas are welcomed.

SHARE PM EMAIL GALLERY Attn:RR Quote

04-20-2020 05:43 PM 42 days ago

0Post 2

BeltFedBrowning

rrKey Veteran

Kansas City

MyPosts All Forum Topic

Is the linkage pushing or pulling on the tailrotor bellcrank when turning to the right?

SHARE PM EMAIL GALLERY Attn:RR Quote

04-20-2020 05:49 PM 42 days ago

0Post 3

Tim W

rrNovice

Rancho Cucamonga California

MyPosts All Forum Topic

I believe it is pushing.

SHARE PM EMAIL GALLERY Attn:RR Quote

04-20-2020 05:50 PM 42 days ago

0Post 4

BeltFedBrowning

rrKey Veteran

Kansas City

MyPosts All Forum Topic

I had a problem before when pushing, too much of the linkage was unsupported and would bend when pushing. Pulling is not an issue in this instance.

SHARE PM EMAIL GALLERY Attn:RR Quote

04-20-2020 06:04 PM 42 days ago

0Post 5

Tim W

rrNovice

Rancho Cucamonga California

MyPosts All Forum Topic

Hmmmm? I will double check that. But I did move it back and forth without and resistance noted.

SHARE PM EMAIL GALLERY Attn:RR Quote

04-20-2020 06:05 PM 42 days ago

0Post 6

BeltFedBrowning

rrKey Veteran

Kansas City

MyPosts All Forum Topic

There is a lot more to push against when in flight. Enough to flex the linkage.

SHARE PM EMAIL GALLERY Attn:RR Quote

04-20-2020 06:08 PM 42 days ago

0Post 7

BeltFedBrowning

rrKey Veteran

Kansas City

MyPosts All Forum Topic

To check mine, I will hold the servo horn with my hand and try to turn the tail blades to change the pitch. Watch the linkage when you are doing this to see if it flexes.

SHARE PM EMAIL GALLERY Attn:RR Quote

04-20-2020 06:25 PM 42 days ago

0Post 8

BeltFedBrowning

rrKey Veteran

Kansas City

MyPosts All Forum Topic

Imagine it this way. You can pull a bus with a rope, but try to push anything with a length of rope.

SHARE PM EMAIL GALLERY Attn:RR Quote

04-20-2020 06:29 PM 42 days ago

0Post 9

Tim W

rrNovice

Rancho Cucamonga California

MyPosts All Forum Topic

This makes a lot of sense. I’m going to check this.

SHARE PM EMAIL GALLERY Attn:RR Quote

04-20-2020 07:28 PM 42 days ago

0Post 10

Tim W

rrNovice

Rancho Cucamonga California

MyPosts All Forum Topic

Another thing that puzzles me is when I had the receiver battery plugged in and was using the radio it would sometimes not respond to right rudder input? But this was very intermittent? So there was no resistance on the tail rotor like there would’ve been if it were in flight.

SHARE PM EMAIL GALLERY Attn:RR Quote

04-20-2020 07:33 PM 42 days ago

0Post 11

chopper37

rrVeteran

TRUMP 2020 / NRA 2A We The People

MyPosts All Forum Topic

Have you tried a different servo?

SHARE PM EMAIL GALLERY Attn:RR Quote

04-20-2020 07:50 PM 42 days ago

0Post 12

Tim W

rrNovice

Rancho Cucamonga California

MyPosts All Forum Topic

No I haven’t

SHARE PM EMAIL GALLERY Attn:RR Quote

04-20-2020 07:55 PM 42 days ago

0Post 13

chopper37

rrVeteran

TRUMP 2020 / NRA 2A We The People

MyPosts All Forum Topic

It’s worth doing a bench check with a spare servo

SHARE PM EMAIL GALLERY Attn:RR Quote

04-20-2020 08:35 PM 42 days ago

0Post 14

Tim W

rrNovice

Rancho Cucamonga California

MyPosts All Forum Topic

Yeah, that’s another thing I am thinking. However I don’t have any spare servos laying around.

SHARE PM EMAIL GALLERY Attn:RR Quote

04-20-2020 08:39 PM 42 days ago

0Post 15

lt1pwr

rrVeteran

Douglasville, GA

MyPosts All Forum Topic

💎Sustaining Member

Tim W I don’t have any spare servos laying around.

Can you switch the tail servo lead to another channel on your receiver or FBL to test it?

SHARE PM EMAIL GALLERY Attn:RR Quote

04-20-2020 09:10 PM 42 days ago

0Post 16

Tim W

rrNovice

Rancho Cucamonga California

MyPosts All Forum Topic

I’m not sure, but it’s worth looking into.

SHARE PM EMAIL GALLERY Attn:RR Quote

04-21-2020 03:22 AM 42 days ago

0Post 17

Girard Ibanez

rrVeteran

Tucson, Arizona (formally from Guam)

MyPosts All Forum Topic

💎Sustaining Member

Is this a new problem?

If so and nothing changed perhaps your servo is not holding. Have you tried to apply manual torque to see if the servo is holding?

Also, a low rotor head speed and also reduces the tail rotor rpm. You can increase the head speed and see if the problem goes away. If it does and you want the low head speed you might want to increase the tail rotor length or cord. Or change the gear ratio.

Just poking at other solutions.
Team Thunder Tiger
since 6/2005 to 12/2014

SHARE PM EMAIL GALLERY Attn:RR Quote

04-21-2020 03:26 AM 42 days ago

0Post 18

Girard Ibanez

rrVeteran

Tucson, Arizona (formally from Guam)

MyPosts All Forum Topic

💎Sustaining Member

Tim W Another thing that puzzles me is when I had the receiver battery plugged in and was using the radio it would sometimes not respond to right rudder input? But this was very intermittent? So there was no resistance on the tail rotor like there would’ve been if it were in flight.

This one is puzzling ... intermittent...difficult to repeat.
Team Thunder Tiger
since 6/2005 to 12/2014

SHARE PM EMAIL GALLERY Attn:RR Quote

04-21-2020 03:29 AM 42 days ago

0Post 19

Tim W

rrNovice

Rancho Cucamonga California

MyPosts All Forum Topic

Girard Ibanez Is this a new problem?

If so and nothing changed perhaps your servo is not holding. Have you tried to apply manual torque to see if the servo is holding?

Yes, this is a new issue that I’ve never had before.

SHARE PM EMAIL GALLERY Attn:RR Quote