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HelicopterMain Discussion › Advantages of an all metal rotor head?
04-28-2002 11:09 PM  15 years agoPost 1
driftrider

rrVeteran

Cedar Rapids, IA. (In my own little world)

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Hello everyone,

What are the advantages/disadvantages of an all metal rotor head (including washout and flybar assemblys). It seems that most middle to upper-middle class helis all use some combination of metal and plastic to make their rotor head systems. I always thought it was too keep costs down. There has to be a reason, other than good looks, that one would spend $200-500 for an all metal head.

Thanks,

Mike

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04-28-2002 11:50 PM  15 years agoPost 2
HONDO

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Tucson Az.

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Metal head

Alum is great when you need the strength but a head with plastic grips will actually hover smoother and your thrust bearings will last 10 times longer. Don't waste your money unless you just want it to look good. If you spend $400 on fuel you will be a much better pilot than just bolting on a $400 head. For hardcore 3D stuff I would recommend a metal center hub. they definatly do look better you really can't beat the looks of a Xcell Pro head.

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04-29-2002 03:17 AM  15 years agoPost 3
Gearhead

rrMaster

Vt

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So, use up $400 in fuel and then buy a all metal head !!

the Wasp

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04-29-2002 03:38 AM  15 years agoPost 4
driftrider

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Cedar Rapids, IA. (In my own little world)

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The reason I ask is that even the top-of-the-line helis like the Vigor CS, Fury Extreme, Freya and Robbes(? not sure about Robbe, couldn't find good info but the pics look like a metal/plastic head) all use plastic in their heads to varying degrees. I've been looking at the PHI Hurricane as a possible next heli (in about a year or so) and it has all metal, well, everything. Someone told me recently that an all metal head was prone to wear at the blade grips...but I don't see how machined high strength aluminum would wear faster than fiber molded plastic.

Is there any truth to this?

Mike

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04-29-2002 04:06 AM  15 years agoPost 5
HONDO

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Tucson Az.

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Metal head

all those companies that use alot of plastic and some metal are the most reputable companies in the world and they do it for a reason. they all have the best pilots doing all their testing and giving them feedback. The metal blade grips don't necessarily wear out it just wears out all the bearings inside them. if you have ever priced thrust bearings they are not very cheap to replace. If Curtis could win the National Champs 9 times in a row and the Worlds over and over again with plastic heads and Jason Krause, Tod Bennet, and Chip Hyde fly the way they do and don't destroy plastic heads the average flyer shouldn't have a problem with them. Don't let all that PHI machined purple stuff fool you buy a high quality machine from someone who really knows whats going on. Like Miniature Aircraft those guys really know whats what and they listen to their Pros and make the changes needed. People call it plastic but this stuff is very strong fiber filled nylon that is injection molded under super high pressure that rarely has any flaws then it is machined to very high tolerences to be just as accurate as machined alum.

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04-29-2002 01:05 PM  15 years agoPost 6
ed vega

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nyc, queens

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I prefer all metal head with german bearings through out. I don't like plastic grips with molded pitch arms. thats my preference.

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HelicopterMain Discussion › Advantages of an all metal rotor head?
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