RunRyder RC
WATCH
 2 pages [ <<    <     1     ( 2 )    >    >> ] 2312 views POST REPLY
HomeAircraftHelicopterMain Discussion › bell crank servo arms vs direct to swash
10-27-2013 02:53 PM  4 years agoPost 21
McKrackin

rrProfessor

Lucasville,Ohio

My Posts: All  Forum  Topic

The Avant Aurora frame and bell cranks are the same as the picture there Ben but those servo horns are pretty wicked.

I literally never use the word literally right.

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
10-28-2013 12:54 PM  4 years agoPost 22
rpat

rrElite Veteran

Weirton, W. Va.

My Posts: All  Forum  Topic

Now I know what you are talking about. My velocity came with bell crank fixing pins that way, but I had to make up the rods. I would like to see all manufactures jump on the band wagon on movable servo arms so you don't have to mess with the sub trim to get the arm straight.

trex 700fbl cal30,minititan,, trx600fbl,trex250,logo 500,Velocity N2

PM  EMAIL  GALLERY  Attn:RR  Quote
10-28-2013 02:54 PM  4 years agoPost 23
Four Stroker

rrElite Veteran

Atlanta

My Posts: All  Forum  Topic

What is the reliability of the included servo output adapters ?

I assume they are the tapered collet idea ? Metal servo output required ? Not that that is unusual.

PM  EMAIL  GALLERY  Attn:RR  Quote
10-28-2013 03:09 PM  4 years agoPost 24
McKrackin

rrProfessor

Lucasville,Ohio

My Posts: All  Forum  Topic

Metal servo output pinions wouldn't make any difference since the part that goes on the servo is splined just like any servo horn.

I literally never use the word literally right.

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
10-28-2013 04:08 PM  4 years agoPost 25
Dr.Ben

rrMaster

Richmond, VA, USA

My Posts: All  Forum  Topic

Richard,

The included adapters are EXTREMELY reliable. The only time they might shift is if you crash really hard. The circumpherential pinching of the arm (kinda like a split mainshaft collar) grabs the spline adapter like a vise.

Those who have seen Nick thrash a model.......they hold :).

Ben Minor

Peak Aircraft/Team Minicopter Team Futaba Team Kontronik USA

PM  EMAIL  GALLERY  Attn:RR  Quote
10-28-2013 04:20 PM  4 years agoPost 26
ZS-JAF

rrVeteran

Nazareth, PA

My Posts: All  Forum  Topic

This is a good thread. I have only limited experience with the bell crank. Fusion 50 and TT 720E. I felt that the 720 used the push pull to increase leverage and speed. I tried a few FBL units and servos and the heli always fliped and roled fast. Does it not depend on the size of the two wheels, where direct to swash is direct?

I have a 3D heli, I don't understand why it doesn't do 3D

PM  EMAIL  GALLERY  Attn:RR  Quote
10-28-2013 04:39 PM  4 years agoPost 27
McKrackin

rrProfessor

Lucasville,Ohio

My Posts: All  Forum  Topic

Most bell cranks are 1:1 with the servo horn/wheel so speed is identical either way.

If your servo wheel is bigger or smaller than the bell crank,the speed will change but that's not the way they are meant to be set up.

Most FBL units regulate flip and roll rates anyway so all the different wheels do is effect resolution.

I literally never use the word literally right.

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
10-28-2013 06:39 PM  4 years agoPost 28
Four Stroker

rrElite Veteran

Atlanta

My Posts: All  Forum  Topic

It is my suspicion and Ben could ask that the eCCPM s/w whether in the FLB unit or the TX is set up for exactly 90 degrees of servo total travel (cosine lookup tables or some such). Using less effects your resolution and using more probably ? results in interaction or swash wobble. Subtrim is only a problem if you run out of travel on any of your 3 swash servos. You can move your sticks around at the extremes and see if this is happening.

Squishing or cracking a plastic servo spline is probably not a good thing.

PM  EMAIL  GALLERY  Attn:RR  Quote
WATCH
 2 pages [ <<    <     1     ( 2 )    >    >> ] 2312 views POST REPLY
HomeAircraftHelicopterMain Discussion › bell crank servo arms vs direct to swash
 Print TOPIC  Make Suggestion 

 13  Topic Subscribe

Sunday, July 22 - 8:53 pm - Copyright © 2000-2018 RunRyder   EMAILEnable Cookies

Login Here
 New Subscriptions 
 Buddies Online