RunRyder - Blade take off Problem

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e-E-Flite Blade CP mCX CX 400-3D > Blade take off Problem

lryansl
Senior Heliman
Location: Yuma, Arizona

At full throttle I can hear the RPM's decrease and blade seems to settle back down to the ground but If i go to about 3/4 then it goes up about a foot to 2 feet, anymore increase in the throttle and the RPM's decrease and it settles to the ground. I dont understand any Idea's.(PS Shear pin is fine already checked it) Battery is fully charged. Thanks for the help.

09-07-2005 Over year old.

stealth916
Veteran
Location: Rocklin, CA

May sound crazy - but count your pinion gear teeth and make sure they put the right motor/pinion combo on there..... it should be 10 teeth.

You might also remove the motor, and be sure the main shaft assembly turns freely with no binding or braking anywhere....

09-07-2005 Over year old.

lryansl
Senior Heliman
Location: Yuma, Arizona

The teeth on the motor are right, but im still having the problem. From what i can see is it seems that at full throttle the blades are pitching to much and it cuases the engine to drop in rpm's. Also when I tested the pitch with the idle up on and i go all the way back with the throttle the pitch is really high and seems to drop the rpm's way down also. Ive tested the motor without the blades on it and it goes full throttle with no drop in rpm's, which lead me to believe the blades are over pitching causing the problem. Now the only this is I can seem to fix it, Any ideas would be greatly appreciated. Thanks again.

09-09-2005 Over year old.

stealth916
Veteran
Location: Rocklin, CA

Screw your ball links that connect the flybar to the blade grips - (the links that adjust tracking) - all the way in and start again.

Or you can just adjust them until you have ZERO pitch when the collective is all the way back in NORMAL mode...

This is the only way you have to adjust pitch.

What is your collective trim setting at when you try and take off? It shouldn't matter - but to eliminate any variables, be sure your collective trim is in the middle when testing...

09-09-2005 Over year old.

astroflyer
Senior Heliman
Location: Milford, Nova Scotia, Canada

It sounds to me like your main motor is worn out.

I had a similar problem....half throttle, flick the idle up switch....motor speeds up properly, but when I increase throttle to lift off, the blades slown down noticeably...although the heli did still fly.

replaced my main motor yesterday and all is well...no slowdown when I increase pitch.

the old motor had tons of time on it and the brushes were totally worn down...

cheers
Papa Sharptooth

Bouncing about the living room, my then three year old grandson declared himself "a kangaroo".
"If you're a Kangaroo, what is Grampie", I ask.
His reply: "you a dinosaur"

09-09-2005 Over year old.

HOMEPAGE

lryansl
Senior Heliman
Location: Yuma, Arizona

Alright i adjusted the linkages so that when the throttle and trim are centered the blades have no pitch at all. As soon as battery finishes charging im gonna test if it will take off without idle up switch on. If it doesnt then Im gonna assume that the Motor is worn and I guess ill replace it. I'll let you know how it turns out. Thanks again for the help.

09-10-2005 Over year old.

swattley
Veteran
Location: West Milford NJ

they have small pitch guages that fit the blades. there is a lot of pitch increase the last 1/4 travel on the collective. mine has 10 degrees or 11 at full pitch / throttle. and about 5 to 6 degrees at 3/4 stick.

09-10-2005 Over year old.

lryansl
Senior Heliman
Location: Yuma, Arizona

Alright I adjusted the main blades so that when the throttle is all the way down the blades have no or almost no pitch. Took it out this morning to test it and was unable to get the heli to get off the gounrd, I did notice that the rpm's didnt drop off at full throttle. Heres another question with the pitch set to almost nothing with the throttle all the way back should the blade be able to take off at full throttle or at least half, and is it normal to have some down pitch when the throttle is back. Thanks again.

Also im gonna try another motor and see if it helps.

09-10-2005 Over year old.

lineman55
Senior Heliman
Location: Connecticut

Hi Irans,
I just bought the Blade also and have alsos been down the road with electric helis starting with the Arohawk.
When I start my Blade throttle is down,trim is down. no neg pitch at all.
I move the idle trim to halfway and the heli comes to life picking up rpms
but still grounded.
Moving the throttle up to half way rpms increase a bit more and as I pass the halfway mark pos pitch starts to increase and the chopper starts to get light.
To me thats how it should be.
I also switched around the washer/spacer from the paddle grips that were suggested here which eliminated a binding problem because of centrifical force being applied to the blades during high rpms.It came this way from the factory. It should not increase past plus 10 deg on positive.
I hope this helps somewhat.
Kind regards
James

09-10-2005 Over year old.

HOMEPAGE

lryansl
Senior Heliman
Location: Yuma, Arizona

I guess i should have mentioned that I never had this problem before, Ive had my blade for over a month now and the problem just started a couple days ago. Ive been playing with the linkages and I can get it to go about 6 inches off the ground and thats about it.

Im beginning to think its the 4n1.

(Did stickey collective fix also same day i got it)

09-10-2005 Over year old.

stealth916
Veteran
Location: Rocklin, CA

aye, now ya tell me. Try a new motor.....

09-10-2005 Over year old.

astroflyer
Senior Heliman
Location: Milford, Nova Scotia, Canada

I've found on mine that you need about 1.5 turns on the clevis to get some positive pitch with the idle up set at neutral....my heli would fly with zero pitch but it took almost full throttle to get it off. with a 1.5 to two turn adjustment of positive it lifts of at about 60 percent throttle.

I still think your motor is finished. a lot cheaper than a 4 in 1 unit and if it is not the problem, then you have a spare...

cheers
Papa Sharptooth

Bouncing about the living room, my then three year old grandson declared himself "a kangaroo".
"If you're a Kangaroo, what is Grampie", I ask.
His reply: "you a dinosaur"

09-10-2005 Over year old.

HOMEPAGE

lryansl
Senior Heliman
Location: Yuma, Arizona

Sorry about that, Im gonna look into a new motor maybe even go seperates on everything. Thanks for all the help.

09-10-2005 Over year old.

c mark smith
Senior Heliman
Location: Mt Vernon, Indiana

smooth flying Blade CP

Just installed the replacement 4 in 1 unit on my newest Blade CO.

Talk about smooth flying !

My original Blade purchased used had too many minor crashes and sets of bldes, grips, tail parts, etc, and the main shaft needs straightened,,,,,,,,the whole thing needs a lot of touch ups to make it right,

but the new one, smooooth !

I did track the blades to about an 1/8 at half throttle or so, then added a 1 1/2 inch piece of masking tape to the 'red' blade, balance was worse, removed and added a similar piece to the black blde, worse,

out of the box no less,,,,,,,,,,,,,

hovered outside in a smooth 2 or 3 mph wind,,,,,,,,,,,,,,

I'm used to inside my garage but i have my twin engine ultralight chassis in there for some upgrades,,,,,,,,,,

09-10-2005 Over year old.

HOMEPAGE

Flyboy50
Senior Heliman
Location: Amherst, MA - USA

You might have too much pitch on the high end; that would cause the motor to bog down because of the increased drag. The motor is pretty wimpy, so it's a possibility. Try decreasing the pitch a little, or play with the throttle trim(pitch curve).

09-12-2005 Over year old.

HOMEPAGE

lryansl
Senior Heliman
Location: Yuma, Arizona

Alright Ill give it a try today see what happens see if I can still take off. Yesterday I found a 12t gear from soemthine else that fits on the motor so I took off the 10t and put the 12t And im noticing that i getting take off's at about 3/8 thotttle and at half im about 2 feet off the ground. Im gonna play around witht he linkages again. Thanks for the help.

09-12-2005 Over year old.

astroflyer
Senior Heliman
Location: Milford, Nova Scotia, Canada

just wondering, but are you ruinning lithiums or the battery that came with the blade?

12 teeth on your pinion with lithium puts you in danger of burning out the speed controller in the 4-in-1

if you're using the original battery, perhaps the whole problem is with the battery itself...is it bing fully charged? is it worn out or weak?

cheers
Papa Sharptooth

Bouncing about the living room, my then three year old grandson declared himself "a kangaroo".
"If you're a Kangaroo, what is Grampie", I ask.
His reply: "you a dinosaur"

09-12-2005 Over year old.

HOMEPAGE

lryansl
Senior Heliman
Location: Yuma, Arizona

Its with the stock battery, yes. As for the battery Im assuming its still good voltage meter seems to read fine and Ive been using a Hobbico MKII Quick charger and if there are any problems with the battery it tells you or its supposed to.

09-12-2005 Over year old.

marcusp
Heliman
Location: Clovis, NM

Its your spindle

I had the exact same problem with my blade at full throttle the rpm's would fall out and I replaced my spindle and it fixed it. I noticed that it was bent just slightly, Which they seem to bend very easy in a crash.
Hope this helps

09-14-2005 Over year old.

lryansl
Senior Heliman
Location: Yuma, Arizona

Got my new spindle in today so ill change that out and see what happens.

09-14-2005 Over year old.

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e-E-Flite Blade CP mCX CX 400-3D > Blade take off Problem

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