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Ace Hobby . Esprit Model . Thunder Power RC

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e-MSH Protos 500 > DAMMIT!! KEEP BREAKING TAIL ROTORS!!??
 
 
PaulGT3
Senior Heliman
Location: Mammoth Lakes Ca

My Posts This: Topic  Forum		I am trying to fly my protos. I am a little bit nervous because
I have only flown it a couple times and crashed it every time. BUT
I have accrued enough skill now that I can fly my Beam E4 with out crashing while I was waiting on Protos parts. So I just need to get this one airborne. I dont know if its trimmed right but when it looks (at liftoff)like trouble, I throttle down I am breaking tail rotors. I am flying in my back yard, and I have broken my 4th set of rotor blades. the tail is digging into the ground on throttle down and snapping a blade. Do I have the battery too far back and my CG toward the back? the tail fin is not protecting the rotor blades. I am going to the park tomorrow to get a better flat spot to lift off from. But this is redonkulus.
10-31-2009 01:45 AM
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twitch
Veteran
Location: Las Vegas

My Posts This: Topic  Forum		Protos are a bit tail heavy depending on what tail servo and battery you are using. Sounds like a set up issue
10-31-2009 01:49 AM
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PaulGT3
Senior Heliman
Location: Mammoth Lakes Ca

My Posts This: Topic  Forum		Twitch I have the Futaba 502 Gyro with its servo and I have a 14.8v 4s battery thats pretty big but it looks like a generic lipo- twice as fat as my 3s thunder 2200 bat.
the servo is the 9253
I am going to move the battery toward the front. It probably doesnt help with the 502 display in the back too.
10-31-2009 01:55 AM
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twitch
Veteran
Location: Las Vegas

My Posts This: Topic  Forum		Im using the small 520 gyro with a mini 3500G on one of my Protos with a 6s 3000mah battery and mines still tail heavy, just have to work it in the sticks. But if its slamming down in the tail your swash might not be level and your elevator might be to high
10-31-2009 01:58 AM
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whoamis
Senior Heliman
Location: san francisco, ca

My Posts This: Topic  Forum		I don't know the history, but there are two different vertical tail stabilizers (fins). One is much stiffer (and a little heavier), the flimsy one is really flimsy.

I just swapped out a flimsy one and now I feel much better about my tail rotors...
10-31-2009 06:47 AM
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twitch
Veteran
Location: Las Vegas

My Posts This: Topic  Forum		If you get a new fin dont waist your money on the stock carbon fiber fins, they still break to easy, save time and money and get these 2mm ones

http://www.readyheli.com/Custom_Hel...p/chp-pr010.htm

I dont think this is your problem though
10-31-2009 07:45 AM
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PaulGT3
Senior Heliman
Location: Mammoth Lakes Ca

My Posts This: Topic  Forum		DID IT AGAIN!!! Rotor blade #5!!

fu@k me!! There has to be something wrong. On throttle down there is
negative blade pitch and its Flying into the the ground I broke the tail fin too.
My beam is so much more stable. I need to find a good setup with this chopper. Today I was hovering just above the ground and it took off to around 10 feet.
11-01-2009 12:53 AM
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CatchMyStratus
Heliman
Location: Ohio

My Posts This: Topic  Forum		If you can fly a 450, you can fly the Protos.

Are you hovering in normal mode? What's your pitch at low throttle stick? If you are slamming it into the ground you might have too much negative pitch in NORMAL mode. Stunt mode you want symmetric pitch like +/-12 deg. Normal you want -2/+10, for example.

The tail blades are fragile to begin with. Get a big piece of plywood and just practice test hops. Concentrate on pushing a *little* fwd cyclic when you go to land to keep the tail up.

Last resort... make some training gear until you are comfortable. That will certainly save your tail.
11-01-2009 01:43 AM
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PaulGT3
Senior Heliman
Location: Mammoth Lakes Ca

My Posts This: Topic  Forum		Catch I have training gear on! But the weight of the chopper flattens it out. I readjusted the swash and I think I got the negative blade pitch out. I will report back tomorrow.
11-01-2009 03:37 AM
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aviation
Veteran
Location: Quebec Canada

My Posts This: Topic  Forum		Proto's

I have a 3500 JR tail servo and am running mega power batteries, this setup balances fine with no issues, you need to have someone look at your set up and check the balance and everything else by the sound of it. Because this is one fine flying helicopter, it is very agile, responsive, quick and light. You should be having fun with it, not problems.

aviation

11-01-2009 02:58 PM
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whoamis
Senior Heliman
Location: san francisco, ca

My Posts This: Topic  Forum		with respect to CoG, I recently read a suggestion I now believe in...

to check your CoG, don't just pick up the heli by the flybar (too subtle). Set the flybar parallel to the boom, pick up heli by blade grips, rotate until heli is off to the side, blades up and down. Then you can easily see whether it's balanced or not. If the tail drops, it will keep on dropping... very non-subtle.

Depending on your one-way, you might need to try it in an opposite orientation... to see if the nose drops (or vice versa).
11-01-2009 05:12 PM
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PaulGT3
Senior Heliman
Location: Mammoth Lakes Ca

My Posts This: Topic  Forum		Aviation You KNOW I have something wrong if I can fly the Beam EASIER than the protos. When I got the protos it was rock solid. I really worked on it last nite after reading setups and watching setup videos.
Today should be much better.There was alot of negative pitch in the blades for somereason must of been after a big wreck.
11-01-2009 05:16 PM
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dizzymarkus
Senior Heliman
Location: Oswego, NY

My Posts This: Topic  Forum		I looked up and didnt see what kind of TX you are using?? -- try a pitch curve onnorm like --

40
45
50
75
100

this should get you to about -3 so she wont slam :0)

Markus

I reject your reality and substitute my own :0)
11-02-2009 11:30 AM
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PaulGT3
Senior Heliman
Location: Mammoth Lakes Ca

My Posts This: Topic  Forum		Markus I use the Jr8103
11-02-2009 06:02 PM
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Ecaf
Heliman
Location: West Dundee, IL

My Posts This: Topic  Forum		Here's a tip....

Don't land under full power.

I always hit TH at a few feet, and keep the heli in the air as long as possible. When you run out of headspeed, the heli will settle nicely.
11-02-2009 06:45 PM
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baby uh1
Senior Heliman
Location: St. James, Mo.

My Posts This: Topic  Forum		dizzymarkus is correct! Running +-12 degrees of pitch the Protos will be very pitch sensitive. I changed the normal pitch rate to 25-37.5-50-75-100, That gives me -6 degrees max and that settled it down tremendously!

The pen is mightier than the sword, unless you're actually in a sword fight!
11-03-2009 01:57 AM
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PaulGT3
Senior Heliman
Location: Mammoth Lakes Ca

My Posts This: Topic  Forum		I flew it a couple times and it still wants to slam in to the ground. Now I have to bring it to the ground put in some nose pitch to raise the tail up in the air and then lower rpms and then more nose pitch in lifting the tail and continue to throttle down
11-03-2009 04:43 AM
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Ecaf
Heliman
Location: West Dundee, IL

My Posts This: Topic  Forum		Why are you throttling down? Use throttle hold. Thats what its there for.
11-03-2009 04:02 PM
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PaulGT3
Senior Heliman
Location: Mammoth Lakes Ca

My Posts This: Topic  Forum		Ecaf, my development is so slow I dont know how to use the TH yet.
11-03-2009 04:54 PM
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Ecaf
Heliman
Location: West Dundee, IL

My Posts This: Topic  Forum		Uhm, throttle hold is one of the most important safety features when flying a heli. Before you do anything else, I would get that set up immediately in your TX. Its not hard to do.
11-03-2009 06:41 PM
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2 pages [ <<    <    ( 1 )     2     NEXT    >> ]412 viewsPOST REPLY
Mikado Modellhubschrauber . Futaba-RC . Boca Bearings

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e-MSH Protos 500 > DAMMIT!! KEEP BREAKING TAIL ROTORS!!??
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