Fun, Learning, Friendship and Mutual Respect
START  HERE


Unregistered
Go Back   HeliFreak > R/C Helicopter Support > E-Sky Helicopters > Belt CP


Belt CP E-Sky Belt CP


Reply
 
Thread Tools Display Modes
Old 05-23-2008, 12:48 AM   #1
1972neo
Registered Users
 

Join Date: Apr 2008
Default head speed drop suddenly

hi! i have problem for belt cp thro curve setting,using futaba 6ex 2.4g, my setting for pitch curve (-2,-1,0,5,10 normal mode).(-10,-5,0,5,10 idle up).thro curve (0,20,40,60,80 normal mode).(100,70,50,70,100 idle up).just start hover my heli less than 1minute & i feel my heli suddenly powerdrop(about 20%-30%drop).first suspect my battery(3s1p 11.1v 2200mAH)problem,but the original come with beltcp battery(11.1v 1800mAH)also same problem !!!. SOMEONE CAN HELP ME !!! THANK'S
1972neo is offline        Reply With Quote
Old 05-23-2008, 12:58 AM   #2
sortegon
Registered Users
 

Join Date: Apr 2008
Location: Monterrey, MX
Default

I think your ESC is overheating and shutting down... try getting an external BEC to power up your receiver and servos and that should fix your problem.
__________________
Trex600NSP| OS50Hyper/MP5 | JR 770 w/8900 & JR8317x3 & JR8231x1 | Youngblood main/tail blades | Align gov |
Trex450SE | Scorpion 2221-8 / ESC60A v2 | Hitec 65MGx3 @ 6v | Hitec gyro 5000/5083mg | Youngblood main blades | Gorilla Paddles |
sortegon is offline        Reply With Quote
Old 05-23-2008, 03:34 AM   #3
helihathnofury
Registered Users
 
Posts: 4,147
 
My HF Map location
Join Date: Apr 2008
Location: Winchester, England
Default

Quote:
Originally Posted by 1972neo View Post
hi! i have problem for belt cp thro curve setting,using futaba 6ex 2.4g, my setting for pitch curve (-2,-1,0,5,10 normal mode).(-10,-5,0,5,10 idle up).thro curve (0,20,40,60,80 normal mode).(100,70,50,70,100 idle up).just start hover my heli less than 1minute & i feel my heli suddenly powerdrop(about 20%-30%drop).first suspect my battery(3s1p 11.1v 2200mAH)problem,but the original come with beltcp battery(11.1v 1800mAH)also same problem !!!. SOMEONE CAN HELP ME !!! THANK'S

Hi, hope you don't mind me saying, but you are running a low rpm and requiring a lot of pitch to lift [in NORM]. In other words, you are creating a load of blade drag, and the copter will handle very sloppily, having very little spare blade angle to play with. Better to have high rpm and low pitch angle of blades - more stable. I am no ace in this and will gladly swallow a large portion of humble pie, but I have spent around a week or two playing with these settings, taking advice from the true ACES on this forum, and the high rpm throttle settings is def the way to go

Mike

Ps my settings in NORM are
Throttle 0,35,70,85,100
Pitch 45,50,55,75,100
= I lift at about 77%rpm and only 1 degree of pitch!!
__________________
Happy Heli-days !!!!!!!! Skip
T-Rex 450Sport,
T-Rex 600NSP, OS50, DS610s GY401/S9254, KO Propo PDS2364,KBDDs, Align 600Ds, MultiGov Pro
DX7/AR7000, Phoenix +DX6i Blade mSR
helihathnofury is offline        Reply With Quote
Old 05-23-2008, 03:05 PM   #4
DierWolf
Registered Users
 
Posts: 1,524
 
My HF Map location
Join Date: Nov 2007
Location: St. Maarten Caribbean
Default

low rpm with high pitch is VERY inefficient, its best to run a higher headspeed with lower pitch.

Also this draws alot of amps from the battery that way and causes the ESC to overheat... Putting on a BEC will not solve overheating problems.... recheck your pitch settings and that everything is running smoothly on the heli itself (also belt tightness and gear mesh) All those contribute to high amp draw causing overheating of the ESC.
__________________
Esky Esmart 600
EXI-450 with Scorpion Motor
Esky Belt CP with Direct to Swash Mod & Trex V2 Head/tail
Esky Belt CP with DTS Mod and full esky cnc head/tail
Esky Belt CP w/Airwolf Fuse (Sold) / Esky Lama V4 Full modifications.
Art-Tech Wasp V3 Heli & Art-Tech P-51D w/brushless motor.
DierWolf is offline        Reply With Quote
Old 05-23-2008, 03:21 PM   #5
Ian 777
Registered Users
 
Posts: 2,278
 
My HF Map location
Join Date: Mar 2008
Location: Staffordshire UK
Default

Did you devise those curves or did someone else reccomend them?

I agree with Wolfie and Mike, and a BEC will help with efficiency too.

Also do you lubricate your heli?

Ian
__________________
Trex 500 ESP
Phoenix Flasher 450
Frankenbelt
Ian 777 is offline        Reply With Quote
Old 05-24-2008, 06:17 AM   #6
1972neo
Registered Users
Thread Starter Thread Starter
 

Join Date: Apr 2008
Default

Hi ! lan ,no one reccommend ! because i thougth more high rpm get more battery power draw.so i set like that ! i see all your reply . now i know my thinking is wrong ! so now my first thing is to reset my thro curve to get more high rpm THANKS FOR YOUR HELP !!! SORTEGON,MIKE,WOLFIE,LAN !!! THANK YOU VERY MUCH
1972neo is offline        Reply With Quote
Old 05-24-2008, 06:33 AM   #7
Ian 777
Registered Users
 
Posts: 2,278
 
My HF Map location
Join Date: Mar 2008
Location: Staffordshire UK
Default

You are very welcome

We all know how many difficulties arise when your starting out
__________________
Trex 500 ESP
Phoenix Flasher 450
Frankenbelt
Ian 777 is offline        Reply With Quote
Old 05-24-2008, 10:01 PM   #8
sortegon
Registered Users
 

Join Date: Apr 2008
Location: Monterrey, MX
Default

Your welcome!!
Even if you fly with low RPM, your ESC should hold... but for some reason it doesn´t. Check everything is lubricated and not too tight.
Powering up your receiver and servos produces heat in your ESC, so if you use an external BEC to take care of them, your ESC will work better and cooler, only providing juice to the motor and should hold even if you fly with low RPM.
__________________
Trex600NSP| OS50Hyper/MP5 | JR 770 w/8900 & JR8317x3 & JR8231x1 | Youngblood main/tail blades | Align gov |
Trex450SE | Scorpion 2221-8 / ESC60A v2 | Hitec 65MGx3 @ 6v | Hitec gyro 5000/5083mg | Youngblood main blades | Gorilla Paddles |
sortegon is offline        Reply With Quote
Reply




Unregistered
Go Back   HeliFreak > R/C Helicopter Support > E-Sky Helicopters > Belt CP


Belt CP E-Sky Belt CP

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


Copyright © 2004-2015 by RCGroups.com, LLC except where otherwise indicated. The HeliFreak.com logo is a trademark of RCGroups.com, LLC.