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HomeScaleAircraftScale HeliScale Helicopter Main Discussion › [Need suggeestions] 5 bladed rotor head for 700
01-23-2012 09:05 AM  6 years agoPost 1
Azalin

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Ankara-Turkey

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Hi,
I am searching for a nice main rotor head. I just find this. What do you think? Anyone using it? Any comments would be appreciated.

http://www.cnchelicopter.com/servle...tion-CNC/Detail

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01-23-2012 03:15 PM  6 years agoPost 2
coptercptn

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Mesa AZ. USA

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There are quite a few out there now.. As most advertised for 600 size are "Over sized" you can use them if they meet the shaft size you are running. You can also check Starwood for the "OF" line. In the end it all boils down to what you are willing to pay for the head and if it fits your mechanichs.

Home of the "Sea Cobra".....

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01-23-2012 03:58 PM  6 years agoPost 3
Azalin

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Ankara-Turkey

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Thanks.

Why are the grips plastic in OF multi heads? That expensive head but plastic grips. This annoys me.

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01-24-2012 06:32 AM  6 years agoPost 4
capesandblaster

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Truro, MA

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Looks like a heavy chunky metal head. I'm using a Century 5 blade
60-90 head with a vario 12mm swash and follower for my 700 size MD500E. Still dialing things in, but it tracks well and is pretty smooth and pretty reasonably priced.
Adam

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01-24-2012 07:48 AM  6 years agoPost 5
Azalin

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Ankara-Turkey

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01-24-2012 04:57 PM  6 years agoPost 6
capesandblaster

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Truro, MA

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The one with the plastic grips, it's a pretty nice built head if you
can find one. I got lucky and found one from a guy selling it unused.
The metal one is VERY nice. They are simple and work well.
Adam

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01-24-2012 04:59 PM  6 years agoPost 7
coptercptn

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Mesa AZ. USA

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I have the OF 6 blade for my Turbine Size CH-53.. It looks awsum!!

And no worries about the plastic blade grips....

Home of the "Sea Cobra".....

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01-24-2012 08:20 PM  6 years agoPost 8
Azalin

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Ankara-Turkey

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Thanks for your comments. I am also considering this head.

http://www.heli-world.com/detail.aspx?ID=10324

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01-25-2012 07:28 AM  6 years agoPost 9
mattox

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Phoenix,AZ-usa

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http://www.scaleflying.com/5-blade-...-mm_p_2228.html

5 blade head

MingDa helicopters,Scorpion US Power pack/Haiyin/Astroid designs

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01-25-2012 11:06 PM  6 years agoPost 10
Hank79

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Brisbane, Australia

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"Why are the grips plastic in OF multi heads? That expensive head but plastic grips. This annoys me"

Remember, don't worry about how it looks, it's how it flys. If your planning on putting this head on a scale fuselage it can be painted. I have seen the effect of painted rotor heads in authentic colors and they look far better than bare metal from the factory.
Look at the beautiful rotor heads from heliclassics, fully painted, you would not know what they were made from.
From my research OF is the gold standard for mass production heads. Have a read why on the Starwoodmodels site, it quite interesting. I'm not saying the heads you have listed are bad, in fact I have seen many video's of Century heads flying very well. However I believe the Bendix system on the OF head is superior.
Here is why. The Kevlar bands that hold the grip to the hub allows for some lateral and horizontal movement together with the GF blade set which also has some inherent flex mimicking the movements of a full size semi rigid rotor head. So by nature of a multi-blade head rotating at a lower rpm the flex gives it more dampening qualities and hence better manners without as much reliance on the FBL system.
If you go the (Century)route where the blade grip is attached to the hub by a spindle surrounded by thrust bearings and a ridged carbon blades set.... The head will not be as forgiving at lower rpm. The FBL system will have to work harder to dampen the cyclic inputs and stabilize the swash plate.
So this is why I believe the OF design is superior. Having said that not everybody wants to pay the high price for German engineering. It's just my opinion, good luck.

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