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HomeAircraftHelicopterMain Discussion › Aluminium Blades - Why not?
11-06-2004 01:49 AM  13 years agoPost 61
Furious Predator

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I'd say....why dont we just go the extra mile and tape razer blades to the leading edges to make them bite into the air better?
As strong as carbons are, they shatter like crazy, Al blades would not shatter, they might bend and deform, before comming back for more.

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11-06-2004 04:04 AM  13 years agoPost 62
Alistair

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no where land

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Alistair dont take this the wrong way but it does seem like you are "afraid" of them, there seems to be a lot of this on the subject of metal blades, which seems silly, until you know the facts how can you decide they are dangerous.
lol, no offense taken mate... i'm not afraid of the blade... it what could happen when they don't break up upon impact that i don't like.

i don't fly too close to myself... and i don't do things i'm not comfortable with. i'm not stupid well, i don't think so... crazy, not stupid?
Al blades would not shatter, they might bend and deform, before comming back for more.
this is what i meant. this is what i don't want to happen. i'd slap them on though... neat sounds

squigle

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11-06-2004 04:26 PM  13 years agoPost 63
zoom boy

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Flying low and close to yourself is wayyyy safer then aluminum blades
And flying low and close to your self is wayyyy safer thAn carbon blades, its not the fall that kills you its the sudden stop, in other words it doesnt matter what blades you have while flying, it matters when you are being hit by them after the flying part is over.

We still havn't determined what the blades would do compared to carbon ones to the person, we need a test where a blade and something like a side of beef have an impact and compare it with carbon, fibre glass and wood, all at the same momentum (NOT speed)
I'd say....why dont we just go the extra mile and tape razer blades to the leading edges to make them bite into the air better?
Could you both pm me your scientific data on aluminium blades to back your opinions up (and thats all they are at the moment, opinions)

Until I see such data, there is no point in saying things like that, all this is, is conjecture, nothing more

Alistair fair enough

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11-06-2004 08:54 PM  13 years agoPost 64
Furious Predator

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I dont need scientific data to create my opinion, its called common sense.

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11-06-2004 09:11 PM  13 years agoPost 65
Furious Predator

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i think from a construction standpoint, it would be a bugger just to make the things. the profile would have to be done on a CNC of sort. and balancing i would think would be a bit difficult. the center of gravity along the axis of the blade should be in line with the bolt hole. this would be hard to do because the Al blade would be solid (unless there is a manufacturing method i'm not aware of that would be able to hollow out the blade) unless, it was done using sheet Aluminium. in which case it would not be as rigid as Carbon.
i will admit though, polished up Al blades would look pretty sweet. you could watch yourself get cut apart 1800 times in a minute.

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11-06-2004 09:47 PM  13 years agoPost 66
Furious Predator

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that would be cool, but would cost a small fortune i would think. My carbons already cost me $200 a set (700mm RotorTechs, and in Canadian currency)

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11-06-2004 10:03 PM  13 years agoPost 67
Peter65

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Roxby Downs, South Australia.

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These blades are extruded. As such they are hollow.

We should give these blades a chance atleast.

Laughing at yourself will lengthen your life. Laughing at me will shorten it...

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11-06-2004 10:09 PM  13 years agoPost 68
Alistair

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why does everyone things the allow blades are solid? lol

squigle

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11-06-2004 11:01 PM  13 years agoPost 69
jerrythercpilot

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We all dont think they are solid!!! They could be honeycomb core and bonded, or they could be chem milled and bonded. How are they bonded, with resin or are they brazed??
got a wicked idea!!! Since aluminum heads are probably not safe either (just like the blades) lets go to CF rotor heads!!
Alexander,
The difference between using Aluminum for a blade vs blade holder are completely different. In one application (the blades) they are allowed/designed to flex and thus the deflection plays a great role in the fatigue life. In a root holder application, which is designed with way overkill, there is primarily a centrifugal load with little or no deflection. A big difference!!!

If any one has a junk set of both Carbons and Al blades, I can test them on a shaker table and put an end to all the speculation. The first blade to fall apart looses

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11-06-2004 11:41 PM  13 years agoPost 70
Curtis_Basher

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I wasn't gonna say anything before, but i need to say your a bunch of morons

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11-07-2004 01:23 AM  13 years agoPost 71
Alistair

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I wasn't gonna say anything before, but i need to say your a bunch of morons
lol.... i like it

squigle

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11-07-2004 10:37 AM  13 years agoPost 72
Pliczner

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Szczecin - Poland (middle europe)

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HAHAHa

Two ultimate life rules: 1. Never say all you know.

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11-07-2004 02:58 PM  13 years agoPost 73
zoom boy

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funny

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11-07-2004 03:00 PM  13 years agoPost 74
zoom boy

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Jerrythercpilot, a shaker table will not be the right way to test them, we need to have someone set up an impact with them and something that has a similar consistancy to a human, like a side of beef (beef because then we can have burgers after)

Thats the kind of test we need

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11-07-2004 04:40 PM  13 years agoPost 75
jerrythercpilot

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OK OK, how about a Sharpy Impact Test?? I can probably get that done. But I think I kow the answer already.

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11-07-2004 07:50 PM  13 years agoPost 76
Furious Predator

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Kitchener, Ontario, Canada

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Why not try out that jeloton stuff they use for crime investigating, its supposed to have the same density and reaction to a human body, i guess they use it a lot for bullets and other small shrapnel for explosions.

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11-07-2004 09:24 PM  13 years agoPost 77
Alistair

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no where land

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something that has a similar consistancy to a human
eh... why? how 'bout you test it on the ground... that is something it is more likely to hit. the concern would be what happens once/after it makes contact with the ground...

lol

squigle

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11-07-2004 09:29 PM  13 years agoPost 78
Furious Predator

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Thats why i tell beginners to use carbons, if they are gonna hit something they might as well finish it off

I'm only kidding for those "Sensitive" type

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11-07-2004 09:34 PM  13 years agoPost 79
Alistair

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i've been beat to hell by a hummingbird for fooks sake. i don't want to go any further... lol

squigle

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11-09-2004 11:10 PM  13 years agoPost 80
Peter65

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Roxby Downs, South Australia.

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Reply to email from M-Blades
the price of a pair X63/680 (symetrical blades for Raptor 60) is 96.00 Euro.
If you life not in EU-country 82,76 Euro (=excl. VAT)

react in a crash: Alu Blades wrap main shaft, they do not splinter in a standard crash.

Laughing at yourself will lengthen your life. Laughing at me will shorten it...

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HomeAircraftHelicopterMain Discussion › Aluminium Blades - Why not?
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