RunRyder RC Helicopter Topic - Blade 400

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e-E-Flite Blade MSR CP CX MCX 400-3D > Blade 400

schoie7
New Heliman
Location: United Kingdom

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Hi I am new to this but need help. I first bought a Blade CX2 three months ago and having never flown before have progressed resonably well enough to want to fly bigger outside. I have bought a Blade 400, which is a completely different beast! I have had a couple of crashes and replaced feather shafts and such like and tried again. I had got to the stage of getting the heli up and hoovering a couple of feet of the ground when disaster struck. I had to change the battery and when I started up again both main rotor blades came off the heli quite rapidly.The damage was minimal and after a few hours rebuilding the heli started up. Here is the problem it won't take off. I have checked all control rods with a vernier for lengths, flybar for equal spacing, battery,loose wires,level swash plate, and all controls seem to be performing ie left and right fwd and back power up and down, transmitter settings haven't changed and the Rotor blades seem to be tracking good.Why won't my heli take off? I don't want to go to a model shop as I prefer to learn from this.Any help please and suggestions................ Thanks

09-23-2009 09:20 PM

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rotormonkey
Key Veteran
Location: Ottawa, ON - Canada

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If your model doesn't produce enough lift to get off the ground, then it's one of two problems. Either the motor isn't spinning the blades fast enough to lift off, or there isn't enough pitch on the blades to produce lift.

If it sounds like it's going quick enough for takeoff, whip out the pitch gauge and see how much pitch you're pulling at high stick.

If it's made to be idiot proof, sooner or later they'll build better idiots.

09-23-2009 09:25 PM

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Kirkgang
Heliman
Location: Lexington, N.C. USA

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I remember a post similar to this awhile back. Check your bell mixer arms and make sure the longer arm on them are hooked to the swash and not the blade grip.

09-23-2009 09:32 PM

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schoie7
New Heliman
Location: United Kingdom

My Posts This: Topic Forum

Blade 400

Thanks for the advice so far I will check the connections on the bell housing and get a pitch gauge and check the rotor pitch. Will post and let you know how I get on..............

09-23-2009 09:45 PM

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lejon
Senior Heliman
Location: Las Vegas, Nevada

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Any chance you put the main blades back on backwards?

lejon

09-23-2009 10:18 PM

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schoie7
New Heliman
Location: United Kingdom

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Blade 400

Thanks lejon I have checked the blades and they are Align Carbon with yellow uppers so they are on the right way thanks anyway

09-23-2009 10:33 PM

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Hellsiege
Senior Heliman
Location: Colorado Springs, CO

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I'm guessing pitch but a picture of your head setup will help as well. Best of luck in figuring it out.

09-23-2009 10:40 PM

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Harshflyer
Senior Heliman
Location: Seattle, Wa.

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As much as you want to do it yourself, you can't. You will come here.

We are natual born helpers.

Like starting a gas pot, there are 2 things, fuel and fire.

Either your rotor is not spinning fast enough, or the blade pitch is too little.

Let us know what you find.

Still asking why

09-23-2009 10:49 PM

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esmoglo
Senior Heliman
Location: Pembroke Pines Florida USA

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I have personally see this same problem with the Blade 400. Did you crash it? Well if not the problem I had with mine was the servos were stripped out and it would not reach max positive pitch. Check your servos! The gears are plastic and strip easily. My blade 400 was new out of the box and they were bad

! You are best off to get metal gear servos for that bird for sure.

Angelo

Ugly can be fixed stupid is forever!

09-23-2009 11:15 PM

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Heli_KV
Veteran
Location: Ottawa, Canada

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Quote
Any chance you put the main blades back on backwards?

Nah, should not be the reason. It still flyes. Guess how I know...

09-24-2009 02:24 AM

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Mighty Mouse
Senior Heliman
Location: Picayune, MS

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CHeck your blade grips to be sur they wer not reinstalled 180 degrees off. Cant remmber if they are trailing edge or leading edge. You could be giving full neg when you power up.

Here I come to save the day !!!

09-24-2009 03:35 AM

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bryfly53
Heliman
Location: Forest Lawn, Indiana

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Quote
CHeck your blade grips to be sur they wer not reinstalled 180 degrees off. Cant remmber if they are trailing edge or leading edge. You could be giving full neg when you power up.

I made that mistake with the blue CNC blade grips once, since they're identical to each other, but that might be harder to do with the plastic grips since the main blade bolt would have to go in upside down.

09-24-2009 04:25 PM

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schoie7
New Heliman
Location: United Kingdom

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Blade 400

Hi everyone who offered advice to me on my problem getting my Blade 400 to lift off many thanks.My previous build was now obviously wrong. The out come was I ended up stripping the whole rotor head completely apart and from various pictures from many people rebuilt it.The advice regarding the aluminium blade grips was good, I believe they were on in reverse so have now changed them which in turn meant I had to reverse the see saw bar and change control rod ends.Anyway I took it out for a trial and the heli powered up and started to lift and i managed a 2 foot drifting hoover.I then lost all consentration and it bounced quite hard on to it's side.The story ends with a main shaft change,feather shaft and the bolts going into the feather shaft being loctited in so the blades do not come off again!All this and the servos changed after discovering broken teeth.I will certainly keep an eye on you guys as without your help I wouldn't have been able to find and rectify this error.What I would like to do is either change the gears in the servo or buy servos with metal gearing any suggestions please for type and compatability and also I want to change the motor pinion brass gear. Where can I get these? Thank you everyone once again back to practicing take off's and hoovers.................

09-24-2009 08:10 PM

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rotormonkey
Key Veteran
Location: Ottawa, ON - Canada

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Good to hear, thanks for coming back, letting us know what went wrong, and most of all saying thanks!

As for the servos, those e-flite servos are crap. They strip as you look at them, so you'll end up replacing gears in every crash until you change them out.

Standard equipment most folks run on 400/450 helis is either:

HS65MG or HS65HBs.

Personally, I'd be more inclined to go with the HBs. Yes, the gears are nylon, and in theory will strip easier, but I've only had 'em strip on me once in a crash. The metal gears will wear out faster, but won't ever strip on you. They're also a little heavier.

Either servo will do fine in a 450. They're analog, but I don't know how much advantage running digitals in a 450 will give you anyway.

If it's made to be idiot proof, sooner or later they'll build better idiots.

09-24-2009 08:33 PM

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Mighty Mouse
Senior Heliman
Location: Picayune, MS

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Dont go to metal gears, just yet. Wait until you have mastered the heli with hovering and forward flight. The plastic gears have sacrificed themselves. By using metal geared servos you are strengthing one weak point only to move the break point to the next weakest link which could be much more expensive. Nylon gears are generally faster, smoother, cheaper and will wear longer.

That being said, I use metal gears and you will probably will go that route one day. Take your time and hover low, tail in and lots of sim time. And oh yeah, use training gear. You'll save a bunch of money. Well worth the a few dollars in dowel rods and pastic golf balls. You'll get there.

Take offs are easy, its the landings that can be hard.

Here I come to save the day !!!

09-24-2009 08:42 PM

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schoie7
New Heliman
Location: United Kingdom

My Posts This: Topic Forum

Blade400

Hi to you allHaving rebuilt my Blade 400 and getting back into learning to hoover how much "play2 would be recommended in the blade grips on the feather shaft? At the moment I have 2 thin washers each side but there still seems a lot of "play". I am happy everything is tight and correct. Any advice most welcome..............Thanks

09-25-2009 11:05 PM

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Mighty Mouse
Senior Heliman
Location: Picayune, MS

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Zero to very little play. Not too tight to bind the grips. But shouldn't me any really.

Here I come to save the day !!!

09-25-2009 11:44 PM

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blade_400_pilot
New Heliman
Location: Landis, Sk Canada

My Posts This: Topic Forum

Make sure your swashplate moves down and not up otherwise your screwing your heli into the ground

J. Sittler

10-05-2009 01:47 AM

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esmoglo
Senior Heliman
Location: Pembroke Pines Florida USA

My Posts This: Topic Forum

Get rid of the stock servos you are doing your self a disservice with the stock servos you need Metal Gear Servos so you can have less issues during your training. That's just my 2 cents. Also get a better Gyro if you can swing the cash! Its worth it big time (Futaba GY401 would be great) there are plenty of them here on RR for $75 bucks you will feel the holding power!

Ugly can be fixed stupid is forever!

10-05-2009 02:00 AM

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schoie7
New Heliman
Location: United Kingdom

My Posts This: Topic Forum

Blade 400

Hi everyone back with an update on my Blade 400. I was still having problems with the heli getting it to lift off once again. I stripped the rotor head down again and still the same. I then decided to go to my local model shop and present the problem.The outcome to cut the story short was the T rex 450 blades I fitted were 1.5 mm thinner so the blade grips were tightened too much which put the pitch out completely.Also fitted by a previous owner were Aluminium machined parts so the whole rotor head was now metal not as bought in plastic. The aluminium replacement parts although look nice are not a direct replacement some of them being a slightly different shape throwing out all the settings,so basically all the cyclic rods had to be removed and fitted again and adjusted until the heli finally responded with correct thickness blades with the transmitter reset from scratch. Unknown to me as I'm still a novice it was also set up in stunt mode!!Which explains now why it wanted to launch off like a missile......... Any way all sorted I hope this experience may be off use to others in the future. It's been a real learning curve for me and once again a big thank you to all who offered their help. Back to practicing!!

10-20-2009 05:55 PM

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e-E-Flite Blade MSR CP CX MCX 400-3D > Blade 400

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