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Beginners Corner > Blade CP Pro and Futaba GY401 - Just doesn't work?
 
 
Jasmine2501
New Heliman
Location: Lakewood, CO

I know, I know... this gyro is way too good for the CP Pro. I have a TRex 450 in the box, but I'm waiting for servos for it, and I thought I would try to make the GY401 work on my CP Pro - it can't possibly make the tail any worse - or at least that's what I thought.

The GY401 has completely jacked-up my chopper! I haven't damaged anything, but it will not hold the tail no matter what I do. I don't even know what to check. Please help me get started with this gyro... I am using the Spektrum DX7 radio, and I have the gyro sensitivity (single wire) plugged into the 'gear' channel, and I set up the gear channel on the radio to be for a gyro. I have set the sensitivity to switch on the Rudder D/R switch, since I don't really know how to set it up for auto mode. I have the low rate set at 45% and the high rate set at... well, I've tried numbers from 70% to 100%.

What happens is when I spin up the main blades, the tail will start to spin normally (I trimmed the rudder with GY401 in low rate mode) - but as soon as it gets off the ground, it switches from holding decently for a second or two, to spinning wildly out of control, and I don't even hear the tail rotor changing speed when it's spinning. Also, when I do hit the rudder stick, the helicopter will spin in that direction for a long time! I need instant rudder response, this just isn't going to do. I have tried various settings on the gyro 'delay' and 'limit' but it doesn't seem to matter.

I hope this is ok for a first post - I was invited here by a fellow pilot. I'm not an abject noob, but my experience is mostly with planes. I did have this helicopter flying decently with the built-in gyro, which I disabled by turning the proportional mix all the way down (correct?) I searched this forum and some others (and Google) and couldn't find anything about this specific gyro with the Blade CP Pro???

If you know of an article about how to set up the GY401, please help me find it. Thanks very much!

Er... I just noticed I'm apparently a New Heli Man? Can I change that to something more appropriate? New Heli Woman? At the very least
06-21-2008 06:03 AM
HOMEPAGE  
 
 
fenderstrat
Elite Veteran
Location: Aston,Pa

http://www.futabarc.com/team/team-tip-002.html



have you checked that the gyro direction is correct??

I had a BLADECP and put an HH gyro on it (G90)but I am not sure if the 401 is designed to work with an esc (tail)or not,its usually used with a servo(but so was the G90)....follow the set up guide and see what happens....report back

PerformancePlusRC field rep
COMPASS helis field rep
Mini Titan/SE
HBK2
Futaba FASST
06-21-2008 12:36 PM
 
 
rotormonkey
Senior Heliman
Location: Ottawa, ON - Canada

I tried putting a 401 on my bcpp too. It does work, but not very well. It sounds like you just need to hit the reverse switch on the 401.

That being said, with a stock tail on mine, I turned the gain almost all the way down, and the delay all the way up, and the tail still wasn't quick enough to keep up with the gyro. Always hunting back and forth, I messed around with it for probably about 10 flights, then just gave up, sold the thing, and got the Trex that the 401 was intended for.

Never could get the 401 to work properly on the bcpp. Once I put it on the Trex it was perfect though.
06-21-2008 05:13 PM
 
 
WillyGoat
New Heliman
Location: kansas

sorry wrong post
06-21-2008 07:04 PM
 
 
Jasmine2501
New Heliman
Location: Lakewood, CO

Yes I think you're right - BCPP tail just isn't fast enough to satisfy the gyro requirements. I have the direction correct - when I twist the helicopter to the left it would speed up the tail. I got my JR servo set for the TRex today though, so the gyro is going on that tonight. The CP Pro flies ok with the normal gyro - just thought it might be better with this one.
06-21-2008 11:53 PM
HOMEPAGE  
 
 
2low
Senior Heliman
Location: elview wv usa

Works great on mine. You just have to play around a tad with it.

Got to have my cup of heli in the morning.
06-22-2008 12:29 PM
 
 
Jasmine2501
New Heliman
Location: Lakewood, CO

Solution!

It really helps if you mount the thing in the right direction! The manual only says "the base should be perpendicular to the main shaft" - mmm... okay there's two way to do that, and one way is really, really wrong

The label side needs to face up or down, not sideways. It still doesn't work that well - not much better than the stock gyro, and I need to put it on my TRex so I'm not going to bother tweaking it to work any better. The CP Pro is about as good as I think it can be, and I don't think turning it into a $1000 helicopter is worth anything.
06-22-2008 07:59 PM
HOMEPAGE  
 
 
fenderstrat
Elite Veteran
Location: Aston,Pa

Quote 
and I don't think turning it into a $1000 helicopter is worth anything.

you are right on the money about that...enjoy the CP for what it is,and have fun with it,it can be a great little heli...but dont try to dump a ton of money into it turning it into a "little rex".It will never be a belt driven tail heli,so dont waste your time and money trying to make it one

PerformancePlusRC field rep
COMPASS helis field rep
Mini Titan/SE
HBK2
Futaba FASST
06-22-2008 08:39 PM
 
 
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Beginners Corner > Blade CP Pro and Futaba GY401 - Just doesn't work?
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