RunRyder RC
 2  Topic Subscribe
WATCH
 1 page 429 views POST REPLY
GLOBAL 3D ProModeler
Helicopter
e-
SAB
Goblin 700 › Small oscillation
12-02-2016 03:25 PM  6 months agoPost 1
nitronutz

Heliman

St. Johns NL, Canada.

My Posts: All  Forum  Topic

Hello all,
I just finished my first goblin 700 comp build and when I spool up I can see my rear standoff oscillating through the guide bracket.
I know it says in the manual that the heli needs 5-6 flights to mesh the gearing properly, and I do notice that the gear will become a little tighter on one part of its 360 deg rotation.

I haven't checked the shaft to see if it may have been bent, I know it has never been dropped since I took it out of the package.
The link to you tube is below...

Watch at YouTube

PM  EMAIL  Attn:RR
12-03-2016 06:43 AM  6 months agoPost 2
Heli Fanatix

Veteran

Fountain Valley, CA

My Posts: All  Forum  Topic

Main shaft is bent. As you move the swashplate higher ... will wobble more

- Scott

PM  EMAIL  GALLERY  Attn:RR
12-03-2016 01:08 PM  6 months agoPost 3
JuanRodriguez

Elite Veteran

The Villages, Florida

My Posts: All  Forum  Topic

You must have eyes like a hawk, Scott....

I hear the RPM's increase but I don't see the swash raising at all....

What I'm seeing is so minute I wouldn't worry about it and fly it as is....

Like the OP states, the gear mesh is a little tight at the high spot but once they mesh in I think whatever he is seeing will go away.....

Been there, done that and old enough to know better.....

PM  EMAIL  GALLERY  Attn:RR
12-03-2016 05:00 PM  6 months agoPost 4
Heli Fanatix

Veteran

Fountain Valley, CA

My Posts: All  Forum  Topic

Let me rephrase it
....if the swashplate is moved further up, it will oscillate more. There is more run-out at the end

BTW
High spots will blow out motor bearings before bending main shafts. But in the goblin 2 stage, it's not the apparant

- Scott

PM  EMAIL  GALLERY  Attn:RR
12-03-2016 06:24 PM  6 months agoPost 5
nitronutz

Heliman

St. Johns NL, Canada.

My Posts: All  Forum  Topic

Thanks guys, I will remove the shaft and check it for true, it wont take long and it is winter up here anyhow.
The movement didn't get worse or better by moving the swash plate.

My Buddy also stated the same as you Juan, that is normal especially if it is stated I the manual.

Any SAB reps here that can speak to this?

PM  EMAIL  Attn:RR
WATCH
 1 page 429 views POST REPLY
Scorpion Power GLOBAL 3D
Helicopter
e-
SAB
Goblin 700 › Small oscillation
 Print TOPIC  Make Suggestion 

 2  Topic Subscribe

Wednesday, June 28 - 8:11 pm - Copyright © 2000-2017 RunRyder   EMAILEnable Cookies

Login Here
 New Subscriptions 
 Buddies Online