RunRyder RC
 2  Topic Subscribe
WATCH
 1 page 1953 views POST REPLY
HomeAircraftHelicopterBeginners Corner › Blade CP tail twitch..
02-11-2006 10:55 PM  12 years agoPost 1
HELOFREAK

rrNovice

Virgina, USA

My Posts: All  Forum  Topic

Hey guys, first off let me say that I have found these forums to be very very helpful. I have found answers to almost all of my questions. However, I am having a problem with my BCP with the tail twitching all over the place and it's impossible to keep the thing stable when it does this. I have heard that you need to adjust either the gain or proportional settings on the 4in1 unit but I don't think it is having an affect on my BCP. I have tried numerous times to get it to stop but I cant seem to find the right adjustment.

WOuld anyone care to share some info on how they got their tail to stop twitching?? Really buggin me. I'd rather just sit inside and play with my Real Flight program then fly this thing how it is ATM.

PM  EMAIL  Attn:RR  Quote
02-12-2006 08:40 AM  12 years agoPost 2
BlakeMcBrayer

rrElite Veteran

Georgetown, Ky

My Posts: All  Forum  Topic

Are you unplugging the battery before you make the adjustments? The 4-in-1 needs to be restarted in order for your adjustments to take affect?

Proper proportional settings method: Center the rudder trim dial on your Tx. Set your gain pot to the center of it's travel range. Power up heli and bring up into hover in idle up mode. Notice which way nose moves and that you have to correct for all of the time. land and shut down (unplug battery). If nose was moving to left all of the time slightly increase proportional setting. If nose went right, decrease setting. Power up and test again, and again until the tail holds position pretty well.

Once it's set, you will only need some trim dial adjustments through out a flight to compensate for the slowing rotor speeds as the battery voltage drops.

Hope this helps.

Don't come off the throttle untill you see your GOD!

PM  EMAIL  GALLERY  Attn:RR  Quote
02-13-2006 12:25 PM  12 years agoPost 3
HELOFREAK

rrNovice

Virgina, USA

My Posts: All  Forum  Topic

Thanx, I will try your suggestions. But the problem isnt really the tail spinning around in any certain direction, it will just twitch back and forth as if I were moving the throttle stick left and right constantly. I will still try your method though, as I may not be doing this correctly. Let's hope this fixes it

PM  EMAIL  Attn:RR  Quote
02-14-2006 12:11 AM  12 years agoPost 4
BlakeMcBrayer

rrElite Veteran

Georgetown, Ky

My Posts: All  Forum  Topic

That is one of the reasons I suggested you set the gain pot to the center of it's travel. The twitch could be from the gain being to high. Once you have the propotional pot set correctly, then you can adjust the gain as needed. You will want it as high as it can be that you don't get tail wag.

.

Don't come off the throttle untill you see your GOD!

PM  EMAIL  GALLERY  Attn:RR  Quote
02-14-2006 05:25 PM  12 years agoPost 5
HELOFREAK

rrNovice

Virgina, USA

My Posts: All  Forum  Topic

Thanx Blake, your suggestions cured mt tail twitching. the BCP is much more stable in a hover and I can now fly it around without any problems. Again thanx a lot

PM  EMAIL  Attn:RR  Quote
02-15-2006 12:05 AM  12 years agoPost 6
BlakeMcBrayer

rrElite Veteran

Georgetown, Ky

My Posts: All  Forum  Topic

GREAT!!!

It's a enjoyable little heli, that is when it wants to be. Ya, know, kinda like a woman.

.

Don't come off the throttle untill you see your GOD!

PM  EMAIL  GALLERY  Attn:RR  Quote
02-15-2006 02:20 AM  12 years agoPost 7
BladeLike

rrNovice

Bradley Beach, NJ, USA

My Posts: All  Forum  Topic

My BladeCP did not have the tail twitch at first. I crashed two weekends ago. (4 and 1 first) and after a careful rebuild and re trim i have the twitch. Sometimes it becomes a violent wobble with the tail bouncing all over the place...back/forth and up/down. Pretty scary. If the BladeCP is close, I hear the tail rotor speeding up and down. Is this the twitch or something else?

BladeLike

PM  EMAIL  GALLERY  Attn:RR  Quote
02-15-2006 01:05 PM  12 years agoPost 8
BladeLike

rrNovice

Bradley Beach, NJ, USA

My Posts: All  Forum  Topic

I think I solved my tail wobble-bouncing issue. I found when I had re-built after the last crash, I left a gap between the retainer collar w/set screw and the top bearing of the main rotor shaft. This allowed some play, maybe 1/32" to 1/16" vertically in the main rotor shaft. After re-adjusting the gap to 0". Wobble-bouncing thing seems to be gone.

PM  EMAIL  GALLERY  Attn:RR  Quote
02-16-2006 02:01 AM  12 years agoPost 9
BlakeMcBrayer

rrElite Veteran

Georgetown, Ky

My Posts: All  Forum  Topic

That can lead to it! Good to hear it's worked out.

.

Don't come off the throttle untill you see your GOD!

PM  EMAIL  GALLERY  Attn:RR  Quote
02-20-2006 10:23 PM  12 years agoPost 10
BladeLike

rrNovice

Bradley Beach, NJ, USA

My Posts: All  Forum  Topic


^^^^^^^^^^^^^
Simulation


The wobble is ba_____ack. Bigtime.During the first flight of the day yesterday the tail bouncing and wobble started going crazy. I think the main rotor actually hit the tail boom. Crashed shortly thereafter.

After yet another re-build the wobble seems permanent and is so bad the little so-and-so won't even hover without wobbling and tail bouncing itself to death.

The retainer collar is down tight. I repaired the main shaft pin, it has no (zero) play.

PM  EMAIL  GALLERY  Attn:RR  Quote
02-22-2006 02:32 AM  12 years agoPost 11
BladeLike

rrNovice

Bradley Beach, NJ, USA

My Posts: All  Forum  Topic

Replaced these:

EFLH1145 Center Hub and Spindel Set
EFLH1146 Rotor Head Set
EFLH1155 Main Shaft and Drive Gear
EFLH1135 Retaining Pin(s)

Wobble/Bouncing tail gone again. Seems more responsive too.

PM  EMAIL  GALLERY  Attn:RR  Quote
WATCH
 1 page 1953 views POST REPLY
HomeAircraftHelicopterBeginners Corner › Blade CP tail twitch..
 Print TOPIC  Make Suggestion 

 2  Topic Subscribe

Monday, June 18 - 7:54 pm - Copyright © 2000-2018 RunRyder   EMAILEnable Cookies

Login Here
 New Subscriptions 
 Buddies Online