RunRyder RC
 1  Topic Subscribe
WATCH
 1 page 580 views POST REPLY
HomeAircraftHelicopterHIROBOOther › EVO 50 tail prob
02-10-2006 08:48 PM  12 years agoPost 1
Xtreme34

rrApprentice

Crestview, Florida

My Posts: All  Forum  Topic

A friend of mine has the evo 50 w hyper 50,401 gyro,freya speed up pulley,95 mah ,and getting about 4 inches of hunting. things that i have checked.
grease on thrust bearings
lowered gain to 30 %
engine richened
tension of belt
dropped the hole from 20 mm to 17 mm on the servo wheel ( big wheel horn)
checked clutch on high point for vibes
push rod moves freely as does the pitch slider
no slipping in the auto hub bearing

im thinking dropping the gain lower and this hasnt been tried yet.
any advice would be appreciated

PM  EMAIL  GALLERY  Attn:RR  Quote
02-10-2006 08:54 PM  12 years agoPost 2
Alex Rodriguez

rrApprentice

Ohio

My Posts: All  Forum  Topic

is this gyro/servo new? has the heli been crashed? If so, try a known "good" 401/tail servo.

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
02-10-2006 08:58 PM  12 years agoPost 3
Xtreme34

rrApprentice

Crestview, Florida

My Posts: All  Forum  Topic

servo is brand new and the 401 was replaced

PM  EMAIL  GALLERY  Attn:RR  Quote
02-10-2006 09:04 PM  12 years agoPost 4
z11355

rrMaster

New England

My Posts: All  Forum  Topic

IMO, you're still over-gained given the larger CF blades and the
increase in speed due to the speedup gearing.

also, richening the engine is probably not what you want to do.

the MAH tails aren't a great blade.

You might also consider dropping down the wheel another 2-3mm

PM  EMAIL  GALLERY  Attn:RR  Quote
02-10-2006 09:10 PM  12 years agoPost 5
Xtreme34

rrApprentice

Crestview, Florida

My Posts: All  Forum  Topic

z 11355
ill give it a whirl see what happens and i think your right he is over gained in a few different ways

PM  EMAIL  GALLERY  Attn:RR  Quote
02-10-2006 11:56 PM  12 years agoPost 6
Leif

rrElite Veteran

USA

My Posts: All  Forum  Topic

I would not recommend the speedup pulley unless you're running the stock Evo tail blades.

The speedup pulley tends to make the tail too sensitive if you're using the larger blades (92mm+). IMO it's an unnecessary conversion.

Leif

PM  EMAIL  GALLERY  Attn:RR  Quote
02-11-2006 01:05 AM  12 years agoPost 7
Kokamo

rrApprentice

Liberty Hill Tx

My Posts: All  Forum  Topic

Extreme34
I had a "hunting" problem on my Evo. I have since then figured out what the problem was. Before I go in depth, where do you have your gyro?

Joe

PM  EMAIL  GALLERY  Attn:RR  Quote
02-11-2006 01:13 AM  12 years agoPost 8
hhart

rrApprentice

San Jose, CA

My Posts: All  Forum  Topic

Xtreme34,

The problem with your setup is that, your tail is way too powerfull for a given torque (rpm). The carbon tail blades that come with the kit is holding perfectly fine, even for hard 3D.

The key is in your head speed rpm. Use standard t/r gearing but then jack up the head rpm. Play with the gyro gain, servo arm or "L" lever arm on the tail case. I uses G500T and 2700G servo, this setup has been solid.

hhart

PM  EMAIL  GALLERY  Attn:RR  Quote
02-11-2006 01:37 AM  12 years agoPost 9
DS 8717

rrProfessor

Here wishing i was somewhere else

My Posts: All  Forum  Topic

The stock TR gearing and the MAH 92mm blades that come with the EVO are a great combination,if you up the headspeed to 1900 or a little more the tail will hold great. If
the MAH blades are the ones that come with the kit,they are 92mm not 95mm,and they are execellant blades.Also mount the gyro on the rear,there is probem with the tail kicking with the gyro up front. DOUG

YOU ONLY LIVE ONCE..IF YOU LIVE IT RIGHT THATS ALL YOU NEED

PM  EMAIL  GALLERY  Attn:RR  Quote
02-11-2006 02:24 AM  12 years agoPost 10
Xtreme34

rrApprentice

Crestview, Florida

My Posts: All  Forum  Topic

gyro is rear mounted and sorry i was wrong about the blades they are 95 mavericks

PM  EMAIL  GALLERY  Attn:RR  Quote
WATCH
 1 page 580 views POST REPLY
HomeAircraftHelicopterHIROBOOther › EVO 50 tail prob
 Print TOPIC  Make Suggestion 

 1  Topic Subscribe

Tuesday, June 19 - 11:17 pm - Copyright © 2000-2018 RunRyder   EMAILEnable Cookies

Login Here
 New Subscriptions 
 Buddies Online