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Old Jul 17, 2008, 10:53 AM
hmm, I could modify that
scratchwerk's Avatar
flyover country
Joined Dec 2007
184 Posts
Question
3 Blade head set up

I need some info on 3 blade head setup. I'm looking at getting a HBK2 and installing a 3 blade head from here..rc-expert
Is working with a multi blade head that much different than a 2 blade+flybar?
What do I need to consider? Will the heli be more stable?
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Old Jul 21, 2008, 11:11 PM
hmm, I could modify that
scratchwerk's Avatar
flyover country
Joined Dec 2007
184 Posts
Anyone???
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Old Jul 22, 2008, 08:41 AM
Registered User
Singapore
Joined Jan 2004
1,831 Posts
Configure multibladed are actually quite straight forward. It does not matter it is 2,3,4,5,6 or 7 blades, u always use one blades as the reference.

In normal configuration, the linkages from swash plate to center of the blade grips are in 90Degree. In other word, 90Degree phasing. The linkages "Lead" the blades grip by 90Degree.

In flybar+paddles configuration, there is actually an mechanical gyro (that is the flybar + weight. The weight is actually from the paddles itself) that provide the auto stability to the heli.

In multibladed, u do not have the flybar+paddles... thus u lost that auto-stability. To make the heli stable, u use any one of these or a mixture of these:
1. Weighted tip or heavy blades.
2. Normal Gyro + eCCPM Mixer. If your heli is mCCPM, then u do not require eCCPM Mixer.
3. Auto-pilot kind of devices
4. Those V-Bar, VStabi and etc stuff.

SH
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Old Jul 23, 2008, 11:47 PM
hmm, I could modify that
scratchwerk's Avatar
flyover country
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Thanks SH.
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Old Jul 24, 2008, 11:54 PM
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United States, CA, Downey
Joined Jun 2005
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The key is weighted rotor blades
This is the most important thing to get you blade weighted correctly
Jcopter
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Old Jul 27, 2008, 10:53 AM
hmm, I could modify that
scratchwerk's Avatar
flyover country
Joined Dec 2007
184 Posts
How do you weight/balance them? Do you put weight at the tips, or do you weight the whole blade? How do you know how much weight? Trial and error?
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Old Jul 27, 2008, 05:31 PM
Registered User
Tokyo Setagaya-Ku, Japan
Joined Jun 2004
598 Posts
Hi,
Concerning the blade balance: Find the heaviest blade. Then, take a balance
between another blade and the heaviest blade like a seesaw by adding some tape
to the tip of another blade.
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Old Jul 29, 2008, 11:32 PM
hmm, I could modify that
scratchwerk's Avatar
flyover country
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Thanks K2.
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