big problems with Blade cp pro and g90

[sikorskys76]

hi !!

I rencently installed and new g90 HH for my blade cp pro.First off when i plugged it in I noticed the wires on the receiver..the channel 3 for the throttle was in the channel 4 plug in and the channel 4 for the rudder was in the channel 3 plug in..figured maybe they made a mistake witht the identification of the wiring because everything responds well and in the right way..before the g90 gyro.

now that i have plugged in the g90 as per the book it takes about 1/2 to 3/4 of throttle before the motor turns and when it turns it starts abruptly and the heli just makes a turn and the stabilzes..

Without the g90 i can start the motor gradually but with the g90 it start really fast and only at high throttle....any idea on this...like i said it works fine without the g90...and all is plugged good...Any help would be greatly appreciated..

Thanks
Derik

[sikorskys76]

:arggg:

[sikorskys76]

Do I absolutly have to have the 5th channel plugged in and control it from the transmitter...or i can leave it out like it says in the book...cause I want only heading lock. When i plug the 5th channel for the remote gain on the transmitter thats the only way i can control the motor speed...

[Funky]

I didn't see this thread and answered you on the one with my vid.

Sikorskys76, My tail doesnt start either until just before takeoff. I think this is because there is no more proportional motor mixing. The tail doenst kick on until the main rotor has enough force to try to turn the helicopter.

You don't have to use the 5th channel remote gain. If you don't plug it in you can use the gain on the gyro itself instead.

[sikorskys76]

Funky

Thanks for the reply in both the threads...I have found the problem..The wires from the 3in1 was misidentified by the factory :dontknow ..the wire that was identified the throttle channel 3 was in fact the rudder to channel 4...now everything is working as it should..I am happy now i can do some flying....thanks alot

[sikorskys76]

Another question Funky!!

When you are about to take off with your blade cp do you have to compensate with the rudder a little until you are off ground effect?Or when you can take off without any compensation from the rudder?

[Funky]

Ya, I have to give a little rudder input as soon as I take off before it gets stable for me. Once its up about a foot off of the ground the gyro holds good enough that I can let go of the left stick and my tail isn't going anywhere.

[sikorskys76]

Thanks Funky!
And at what position approx is your gyro gain set at?

[Funky]

Well... i was running at 72% gain on my JR remote and was having really good luck. I would get a little wag sometimes, but this seemed to be the sweet spot for my setup... Unfortunately after switching to Brushless this weekend I have had a few problems and can't get the tail to hold well at all anymore :arggg: Love the power, but now I need a new tail solution :(

[sikorskys76]

What about twin tail motor and trying a little of the proportional mix on the 3in1.....i know your suppose to have it all at 0 but id try i out..apparently when you bring up the prop mix with the g90 it will only affect the heli at certain flight regimes wich im far from been at that point.....

Another question..when your battery start to get low do you have to trim it as the battery get lower..and after a while the trim doesnt even compensate enough?

[Funky]

I'm not sure what I will try yet. I flew a few batteries, but on my 4th flight I lost the tail again and put it in the ground pretty hard. First time breaking a head block and grips on a Blade :arggg: After I rebuild I will check some of my options.

As far as trimming as my battery goes down... well... I never had to trim it like you describe. It sounds like you are taking your batteries too far down. Before going brushless I was getting 10 mins out of a battery pack with normal hovering and some forward flight. After 10 mins I would put approx 600 mah back into the 800mah li-po. 640 is about the max you should take from these packs, so I never pushed it much past 10 mins. Voltage was always around 11.3 volts after a flight.

[sikorskys76]

I ordered a twin t/r motor mount and i will get it within a week i will let you know if if does any difference..could it be you have a t/r motor that is not strong enough for the added torque of the brushless?

[Funky]

My tail is definately not strong enough for the torque of the new brushless motor :lol: It works fine as long as I am in a hover or moving around slowly. Once I start doing fast climbouts or anything where I am giving a lot of throttle/collective the heli just spins out of control. I love the new power... finally my blade has some REAL lift.... but now I need a tail that can keep up without blowing out all the time. I am either going to try the dual tail setup or try a brushless tail motor/esc so I can get rid of the 3 in 1 since it is only used now to power the tail motor. Let me know how the dual motor mod works for you.

[sikorskys76]

I will for sure..it will be in a week or so...Did you check the forum to see if anyone else was experiencing the same thing and if they did anything about it...

[BIGGAME121]

Hey sikorskys76

What twin tail mount did you order I am in the market for one also..

[sikorskys76]

I got it from heli hobby Heres the link http://helihobby.com/html/eflight_blade_cp.html its the 4rth one starting from the bottom of the page..It looks a little lighter than the other models out there...but not sure yet till i try it...next weekk..

[BIGGAME121]

Ya I was also looking @ one from helihobby its on the same page but 11th from top 24.99...

[BIGGAME121]

Ya I was also looking @ one from helihobby its on the same page but 11th from top 24.99...

[sikorskys76]

Yes i was looking at that one too It looks a bit beefier ,but i guess it shouldnt make that much of a difference..i will let you know when i install mine..

[frankos72]

Why not just go with the belt drive tail? I'd love to do that but there's all those electronics that go with it too.

What BEC/SC are you using if not the 3 in 1?

I may just have to make the splurge if I can get the g90 for 85 what else do I need to ditch the 3 in 1? and how much will it cost?

If I can get all the electronics for under 125, then I may just do that and then eventually go belt drive when I wear out my tail motor.

Jev

[sikorskys76]

you just need the g90 and turn down your 3in1 prop mix to 0 and your good to go...

[steve28]

with a brushless motor on a blade CP it is difficult to get a good hold on the tail , what KV motor are you using Im using a E-Flight Park 370 3600 KV , the power is great and the tail holds good , rate mode only , now in my JR 6102 i can reduce the throttle curve so as to not go over 65 % power , that way I can limit the head speed and the torqe so as to bring it low enough for the tail to hold ok , too much power and the tail will never catch up , bring main down to match , i use revo mixing after that to get it smoother going up and down .

[Funky]

I hate flying in rate mode. I learned to fly that way, but once I got my first HH gyro I told myself I would never go back. I hate fighting the tail, I think it took me twice as long to learn to hover because I was always concentrating so hard on keeping the tail straight.

Anyways, I am also running a 6102 with an E-Flite brushless, but its the 4100 kv version. I am sure I can turn down the power and get my tail to hold, but thats what i went brushless for :arggg: I want the power, I want the fast climbouts, I just want my tail to keep up. Before going brushless I set my heli up so it could fly in rate mode or heading hold mode.... but I always flew in HH mode. I just set it up the other way as a test to see how good the G90 held in rate mode. Either way the tail would hold pretty good, but if i started moving around a lot or backwards flying I could get the tail to blow out. In HH mode It never blew out on me.... until i went brushless :(

[JesusFreak]

Funky:

Simple physics at work. A Blade with a brushed tail motor just can not keep up in severe attitudes. It barely keeps up with the Brushed motor.

I'm looking at upgrading to Brushless myself. Not sure if it's worth the hassle.

Cheers!
Lee

[sikorskys76]

Any brushless t/r motor around?