RunRyder RC
 6  Topic Subscribe
WATCH
 1 page 745 views POST REPLY
Scorpion Power Scorpion Power
Helicopter
e-
Align
T-REX 250 › 250 SE gyro question
12-31-2009 03:14 AM  7 years agoPost 1
FenderBean

rrElite Veteran

Clarksville, TN

My Posts: All  Forum  Topic

Im using a dx7 and I seem to get better results with the rate mode instead of the heading lock. I cant get any smaller on the servo and my gain for both is in the 30% that seems very low but anything high and it wags like crazy.

Head lock doesnt seem near as stable as rate mode what gives any ideas?

PM  EMAIL  GALLERY  Attn:RR  Quote
12-31-2009 03:34 AM  7 years agoPost 2
knightofcarnage

rrElite Veteran

chicago

My Posts: All  Forum  Topic

In HH mode i have my 17% its its more then fine.
also don't forget on radios that don't have gy mode you have %50 + gain to be in HH. Its not stable because its too much gain. what tail blades are you using.

PM  EMAIL  GALLERY  Attn:RR  Quote
12-31-2009 02:17 PM  7 years agoPost 3
Evan D

rrApprentice

Charlotte, NC

My Posts: All  Forum  Topic

The 250 usually needs very low gain to work, around 15-18%.... Results do vary with setup, headspeed, and gyro/ servo.

PM  EMAIL  GALLERY  Attn:RR  Quote
12-31-2009 08:03 PM  7 years agoPost 4
FenderBean

rrElite Veteran

Clarksville, TN

My Posts: All  Forum  Topic

im using the larger tail blades

PM  EMAIL  GALLERY  Attn:RR  Quote
01-01-2010 01:53 AM  7 years agoPost 5
NQNA

rrElite Veteran

USA

My Posts: All  Forum  Topic

FenderBean .. Look at the post "Wag, Gyro and tail rotor issues.."

PM  EMAIL  GALLERY  Attn:RR  Quote
01-01-2010 04:56 AM  7 years agoPost 6
rocco.sj

rrVeteran

California,

My Posts: All  Forum  Topic

What kind of gyro you are using?. The Futaba 520gyro are usually somewhere in the lower 20% on gain.

JR Americas
Evo Power Battery
Radio Frequency RC

PM  EMAIL  GALLERY  Attn:RR  Quote
01-01-2010 02:08 PM  7 years agoPost 7
FenderBean

rrElite Veteran

Clarksville, TN

My Posts: All  Forum  Topic

no its the stock align one

PM  EMAIL  GALLERY  Attn:RR  Quote
01-01-2010 02:12 PM  7 years agoPost 8
steve 01

rrProfessor

Grand Rapids MI

My Posts: All  Forum  Topic

Run the shorter tail blades and the gain should be around 17 or so, Are you using the align servo as well ?

PM  EMAIL  GALLERY  Attn:RR  Quote
01-01-2010 02:13 PM  7 years agoPost 9
FenderBean

rrElite Veteran

Clarksville, TN

My Posts: All  Forum  Topic

i figured the larger would be better but I will try the smaller, im using the center hole on the stock 420 servo wheel

PM  EMAIL  GALLERY  Attn:RR  Quote
01-01-2010 02:15 PM  7 years agoPost 10
steve 01

rrProfessor

Grand Rapids MI

My Posts: All  Forum  Topic

The smaller ones are better, it will handle more gain(still only 17 or so ) You need to run the servo arm as short as possible even if you need to drill a new hole closer to the output shaft

PM  EMAIL  GALLERY  Attn:RR  Quote
01-01-2010 02:16 PM  7 years agoPost 11
FenderBean

rrElite Veteran

Clarksville, TN

My Posts: All  Forum  Topic

yeah if i go any closer the link hits the edge of the servo. I will try the smaller blades thanks

PM  EMAIL  GALLERY  Attn:RR  Quote
01-01-2010 07:00 PM  7 years agoPost 12
knightofcarnage

rrElite Veteran

chicago

My Posts: All  Forum  Topic

3 main things for the tail
1) max distance on your servo arm should not pass 5mm
2) use 37 mm blades
3) make sure there is no binds.

one thing ppl overlook is the push rod, if you just twist it a little on the boom it actual puts in a deg or 2 on the tail and it like to bind sometimes. So you can screw up you setup by just picking it up,or putting it in a case That. is why i always use a carbon fiber push rod.

PM  EMAIL  GALLERY  Attn:RR  Quote
01-02-2010 10:41 PM  7 years agoPost 13
Richardmid1

rrProfessor

Leeds, England

My Posts: All  Forum  Topic

I have the servo arm at 5.5mm with the 40mm carbon tail blades (which are no better than the stock plastic ones) and 26% gain on my DX7

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
01-02-2010 11:40 PM  7 years agoPost 14
FenderBean

rrElite Veteran

Clarksville, TN

My Posts: All  Forum  Topic

so here is what i did now it works great, I went down to the inside hole on the round wheel that comes with the servo, and I took the orig pushrod off slide a small carbon tube over it, so there is no need for the rod guide and went to the smaller blades. It hovers like a dream great tail stability, but rate mode still seems more solid but heading lock works great.

PM  EMAIL  GALLERY  Attn:RR  Quote
01-07-2010 12:05 AM  7 years agoPost 15
JLV84

rrNovice

Savannah, Georgia

My Posts: All  Forum  Topic

Keith we need to get together and get your 250 flying like this. I can give you some good tips on getting the tail to hold better. I really enjoy flying mine as you can tell....

http://vimeo.com/7319110

James VanHook iKON Flybarless Factory Pilot SAB Heli Devision Rep Goblin 700

PM  EMAIL  HOMEPAGE  Attn:RR  Quote
01-07-2010 12:34 AM  7 years agoPost 16
FenderBean

rrElite Veteran

Clarksville, TN

My Posts: All  Forum  Topic

yeah just got on my feet again from a foot surgery, if its not to cold this weekend I am planning flying sunday at leaste

nice flying by the way, yeah I really like mine after I got a ball link sizing tool and figured out the gyro problem. I havent been able to do any 3d yet since I havent flown except for my house aka hobby room

PM  EMAIL  GALLERY  Attn:RR  Quote
WATCH
 1 page 745 views POST REPLY
Scorpion Power Scorpion Power
Helicopter
e-
Align
T-REX 250 › 250 SE gyro question
 Print TOPIC  Make Suggestion 

 6  Topic Subscribe

Saturday, October 21 - 4:53 pm - Copyright © 2000-2017 RunRyder   EMAILEnable Cookies

Login Here
 New Subscriptions 
 Buddies Online