RunRyder RC
 3  Topic Subscribe
WATCH
 1 page 320 views
HelicopterScale Model RC Helicopters › 4 Blade Head issues
11-22-2017 03:13 PM  21 days agoPost 1
stephen01505

rrNovice

Glasgow

My Posts: All  Forum  Topic

I have recently fitted a 4 blade head to my Align 700 electric and running a head speed of around 1370 but don`t seem to have great tail authority.
Running an Align G-Pro ,Does anybody have any suggestion,I am new to multi blade heads?

PM  EMAIL  GALLERY  Attn:RR  Quote
11-22-2017 03:16 PM  21 days agoPost 2
co_rotorhead

rrVeteran

Centennial, CO, USA

My Posts: All  Forum  Topic

The 2 most common solutions for this are 1) longer tail blades or 2) more tail blades.

Which option you go with will ultimately depend on how "scale" you want the helicopter to look. For example, on my 5-blade 600-size AH-6, I am running a 2-blade tail rotor with 105mm tail blades since the full-scale AH-6 has a 2-blade tail rotor and I am going for authenticity.

On a 700-size heli, you could try 115mm tail blades and see how they hold. (On my 800-size Huey, I am running 800mm main blades and 130mm tail blades with a headspeed about 1300-1350)

Or you could go with a 4-blade tail rotor with standard length blades. Again, it depends on what you're looking for as far as how authentic you want it to look.

PM  EMAIL  GALLERY  Attn:RR  Quote
11-22-2017 03:21 PM  21 days agoPost 3
ssmith512

rrKey Veteran

Indianapolis, IN USA

My Posts: All  Forum  Topic

Also, some research on your part is needed to get the correct Align part numbers, but there are different main gears and tail drive gears that you can install that will increase the tail ratio for a faster spinning tail.

Steve

PM  EMAIL  GALLERY  Attn:RR  Quote
11-22-2017 06:52 PM  21 days agoPost 4
goodhunting

rrApprentice

Slovenia ... somewhere in Europe

My Posts: All  Forum  Topic

Yes it would help to know which helicopter you are building....
But in general I'm with Steve.... There are gearing options for the tail....

Klem

PM  EMAIL  GALLERY  Attn:RR  Quote
11-22-2017 07:30 PM  21 days agoPost 5
Grimracer

rrVeteran

Eau Claire WI

My Posts: All  Forum  Topic

Align just announced a new taller tail ratio for lower head speed gear setup for the 700.

Grim

Michael J Zaborowski

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
11-23-2017 12:11 AM  21 days agoPost 6
TailKiller

rrApprentice

Panama City, FL

My Posts: All  Forum  Topic

Everything stated above to true and will serve you well. I have found another way without gear changes and with a slightly larger tail blade.
Most controllers will have you set the tail to zero pitch center.
If you set center to a start point of 4 degrees positive on the tail to start to counter the rotor head torque, Settle on a HS range to fly, say 1300. Put the heli in the air and flip from HH to Rate and then adjust from there till the heli tail holds in Rate mode. This way just a little more pitch from the rudder stick will nose right, a little less pitch will nose left from the torque. And vise versa for CCW. Works great for me and the gyro will not have to work so hard to hold the tail.

,Dennis
http://pcrcheliclub.com/
700 Astar Super Scale T-600 Bell 206 Trex 600 Naza H DX8

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
WATCH
 1 page 320 views
HelicopterScale Model RC Helicopters › 4 Blade Head issues
 Print TOPIC  Make Suggestion 

 3  Topic Subscribe

Thursday, December 14 - 4:01 am - Copyright © 2000-2017 RunRyder   EMAILEnable Cookies

Login Here
 New Subscriptions 
 Buddies Online