Fun, Learning, Friendship and Mutual Respect
START  HERE


Unregistered
Go Back   HeliFreak > R/C Helicopters > Main Forum - Helicopter Talk


Main Forum - Helicopter Talk R/C Helicopters and the people who fly them. VENDOR TOPICS DO NOT GO HERE. Full Scale Heli threads go in OT please


Reply
 
Thread Tools Display Modes
Old 05-04-2012, 12:56 PM   #21
dpinvidic
Registered Users
Thread Starter Thread Starter
 

Join Date: Apr 2011
Location: Orange County, Ca. USA
Default got it.

Quote:
Originally Posted by seanh View Post
Phasing has to do with the angular relation between where the blades and the swash input. Some helis require a little + - phase adjustment (not exactly 90deg between servo input and blade reaction). Tried to keep it very simple.

The reason we haven't addressed the tail "wag" issue is that it didn't seem like wag but more of an authority issue. If wag is the issue, definitely get that under control. A slight kick on hard punch's are OK, wag is not good at all.
.

I thought the poster meant some kind of phasing in the tail....and never heard of that.
But main rotor phasing makes sense.

Fun stuff....

Dan
__________________
Dan AMA# 987374 - T-rex (550DFC,550E, 500FB, 500FBL, 450-Sport, 450-Pro), Blade (400 Mcpx 120SR) - DX-7- And a ton of spare parts
dpinvidic is online now        Reply With Quote
Old 05-04-2012, 02:05 PM   #22
Elios000
Registered Users
 

Join Date: Jun 2007
Location: Springfield MO
Default

going to say sounds like phasing
if you can hover inverted do a back flip to inverted note if the tail has moved then finish the back flip back to up right if the tail is back in line with you your issue is one of phasing
__________________
DX8
mSR, T-rex 500ESP 3G, Compass 6HV Savox servos Vbar 5.3Pro Rail Blades
AMA#948801
Elios000 is offline        Reply With Quote
Old 05-04-2012, 02:27 PM   #23
horigan
Registered Users
 
Posts: 1,044
 
My HF Map location
Join Date: Sep 2009
Location: Seattle WA USA
Default

When I had this issue with my Trex 500, though not as dramatic as the OP, I ended up solving it by going FBL.
__________________
Rich
Synergy E5S VBar
Synergy E7 VBar
horigan is offline        Reply With Quote
Old 05-04-2012, 03:51 PM   #24
dpinvidic
Registered Users
Thread Starter Thread Starter
 

Join Date: Apr 2011
Location: Orange County, Ca. USA
Default But how do you adjust for phasing

Quote:
Originally Posted by Elios000 View Post
going to say sounds like phasing
if you can hover inverted do a back flip to inverted note if the tail has moved then finish the back flip back to up right if the tail is back in line with you your issue is one of phasing
We are getting a little off topic, but if you do have a phasing problem, how do you solve it. This is really related to the tilt of the swash. So is it a servo mixing problem that causes this?

Dan
__________________
Dan AMA# 987374 - T-rex (550DFC,550E, 500FB, 500FBL, 450-Sport, 450-Pro), Blade (400 Mcpx 120SR) - DX-7- And a ton of spare parts
dpinvidic is online now        Reply With Quote
Old 05-04-2012, 04:15 PM   #25
rstekeur
Registered Users
 
Posts: 945
 
My HF Map location
Join Date: Dec 2011
Location: Ft Myers, Florida
Default

I hear the term "collective management" all the time, does anyone have a clear definition for collective management?
__________________
Blade MCP X, Blade SR, Blade 450 3D
Trex 450pro, Trex 500, Trex 600
Titan Raptor 50
rstekeur is offline        Reply With Quote
Old 05-04-2012, 04:28 PM   #26
dpinvidic
Registered Users
Thread Starter Thread Starter
 

Join Date: Apr 2011
Location: Orange County, Ca. USA
Default Fancy term for easy on the sticks

Quote:
Originally Posted by rstekeur View Post
I hear the term "collective management" all the time, does anyone have a clear definition for collective management?
.

It just means don't give hard stick inputs which can slow your headspeed or overwhelm the tail.

Important on the Mcpx becasue of it's weak tail

Dan
__________________
Dan AMA# 987374 - T-rex (550DFC,550E, 500FB, 500FBL, 450-Sport, 450-Pro), Blade (400 Mcpx 120SR) - DX-7- And a ton of spare parts
dpinvidic is online now        Reply With Quote
Old 05-04-2012, 04:43 PM   #27
Timtreo
Registered Users
 
Posts: 598
 

Join Date: Dec 2011
Location: Pennsylvania Warminster
Default

Where does one go on HF to learn about phasing. Can someone maybe post a link to a thread that explains it well? Thanks guys.
__________________
Check out my Night Blades Blog here on HF
Timtreo is offline        Reply With Quote
Old 05-04-2012, 04:46 PM   #28
Elios000
Registered Users
 

Join Date: Jun 2007
Location: Springfield MO
Default

phasing is an issue with the how the swash is aligned to the rotor disk normally 90dec works fine but some helis the T-rex 500 is one of them need it more or less
ie more then 90 or less then 90
the easiest way to deal with it is covert to fbl or get head with adjustable phasing
__________________
DX8
mSR, T-rex 500ESP 3G, Compass 6HV Savox servos Vbar 5.3Pro Rail Blades
AMA#948801
Elios000 is offline        Reply With Quote
Old 05-04-2012, 05:01 PM   #29
Timtreo
Registered Users
 
Posts: 598
 

Join Date: Dec 2011
Location: Pennsylvania Warminster
Default

Ok thanks Elios, I think I get it. I will be using a 4 blade head with a FBL unit. I hear there are isssues with "phasing" with this. I will ask more about it in the scale forum when I'm ready for a flight test. Thanks again.
__________________
Check out my Night Blades Blog here on HF
Timtreo is offline        Reply With Quote
Old 05-04-2012, 05:50 PM   #30
Elios000
Registered Users
 

Join Date: Jun 2007
Location: Springfield MO
Default

4 blade head SHOULD be 90dec as well it only gets funny with 3 and 5 or more
see if your FBL has an option for adjusting the phasing of the head
__________________
DX8
mSR, T-rex 500ESP 3G, Compass 6HV Savox servos Vbar 5.3Pro Rail Blades
AMA#948801
Elios000 is offline        Reply With Quote
Old 05-04-2012, 09:57 PM   #31
Mixmaster Pilot
Registered Users
 

Join Date: Aug 2010
Location: Melbourne, Australia
Default

Quote:
Originally Posted by fenderstrat View Post
"No one has actually addressed the issue. Have you setup your tail gain correctly? You need to keep upping the gain 1% at a time until you get a wag in the tail"

LOL..I'm pretty sure thats the first thing I asked him about
lol, yeah sorry, it was just that the advice turned into a phasing and control issue, when it should have been established if it was a gyro gain issue first.
__________________
Beam E4

Formerly owned - Compass 7HV - Blade mCP X V2 - Blade 400 FBL BeastX
Mixmaster Pilot is offline        Reply With Quote
Old 05-04-2012, 10:39 PM   #32
Elios000
Registered Users
 

Join Date: Jun 2007
Location: Springfield MO
Default

the thing is both the T-rex 450 and 500 have know phasing issues
the 450 less so but the 500 has major ones only fixed by going fbl using a multi blade can also make any issues already there worse
__________________
DX8
mSR, T-rex 500ESP 3G, Compass 6HV Savox servos Vbar 5.3Pro Rail Blades
AMA#948801
Elios000 is offline        Reply With Quote
Reply




Unregistered
Go Back   HeliFreak > R/C Helicopters > Main Forum - Helicopter Talk


Main Forum - Helicopter Talk R/C Helicopters and the people who fly them. VENDOR TOPICS DO NOT GO HERE. Full Scale Heli threads go in OT please

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 © 2004-2011 - William James - Helifreak.com