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HelicopterMain Discussion › Main Blade life span
11-30-2005 01:24 PM  12 years agoPost 1
lrogers

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Mobile, Al

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Barring damage from crashes, do carbon blades have a life span after which they should be replaced as part of preventive maintenance?

Larry Rogers - R/C Helicopter Pilot

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11-30-2005 01:38 PM  12 years agoPost 2
Yug

rrMaster

UK. Herts

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Not that I know of. As with everything on a heli, you should regularly inspect and the thing to lookout for on CF blades is cracking. Cracks can be hard to identify and the easiest way is to twist them a bit and have a damn good look as the twisting can make cracks or splits far more visible. Sometimes, you can get some gel coat or paint chipping off, but this is often a sign of too much flexing which I think is to be read as a warning sign.

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11-30-2005 01:41 PM  12 years agoPost 3
BarracudaHockey

rrMaster

Jacksonville FL

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Mine never lasted long enough to worry about stress cracks

Andy
AMA 77227
http://www.jaxrc.com

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11-30-2005 01:44 PM  12 years agoPost 4
Drunk Monk

rrProfessor

Preston, UK

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yeah, I've never had a pair long enough to worry about replacing. If you twist carbon blades you can usually hear if they are damaged.


Stephen

I only open my mouth to change feet.....

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11-30-2005 05:48 PM  12 years agoPost 5
Drunk Monk

rrProfessor

Preston, UK

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Main Blade life spans are good for one crash.....
Unless you get yourself a set of V-Blades. There is always a chance they'll survive with only a scratch. I've seen helis land on the head and not kill a v-blade, very impressive.


Stephen

I only open my mouth to change feet.....

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11-30-2005 07:08 PM  12 years agoPost 6
wolfdad

rrKey Veteran

Southern Maryland

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I would think that a well-made CF blade whether tail or main would have an indefinite life span, however not for me in this life.

wolfdad sends....

"There are those who have...and, those who will" IRCHA #2117, AMA #70068, Turbine Waiver #105

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11-30-2005 07:10 PM  12 years agoPost 7
A. Bundy

rrElite Veteran

Aurora,IL. 30W/SW of Chicago

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Nobody knows.They all crash.

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11-30-2005 07:12 PM  12 years agoPost 8
w.pasman

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Netherlands

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I have been using a single set of SABs 600 carbon's for several hundred flights without issues. Running around 2000 probably half of the time.

But if the mount hole goes elliptic as happens with NHP blades I guess they are scrap

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11-30-2005 07:16 PM  12 years agoPost 9
Christianflyer

rrNovice

Pink Hill, NC Good old USA

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v-blades

I landed a set on there head this past weekend and they did not survive. I would like to have a set that would last over a year. Has not happed yet. LOL!!!!!!!

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11-30-2005 07:33 PM  12 years agoPost 10
Furious Predator

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Kitchener, Ontario, Canada

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i found out my Rotor Tech blades dont seem to like the ground very well, these cut about 6 inches through the ground when they broke. imagine what they would do to a human

the set i have right now are about 16-17 months old, but i didn't do much flying this year either.

Shawn
Team Leisure-Tech
Team HelixRC

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11-30-2005 07:47 PM  12 years agoPost 11
andres.c

rrKey Veteran

pan

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quite long less when they are well maintained and not abused , if they are exposed to direct sun light regularly the expoxy resin might be the weak point

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11-30-2005 08:06 PM  12 years agoPost 12
Furious Predator

rrProfessor

Kitchener, Ontario, Canada

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well the carbon base plate on my Vigor is several years old, its a bit faded, right now the areas exposed to light have a gold tint to it, but its still plenty strong.

Shawn
Team Leisure-Tech
Team HelixRC

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12-08-2007 02:05 AM  10 years agoPost 13
RICH.L

rrKey Veteran

east springfield p.a.

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I was just thinking how lucky I am that my 690 v-blades have lasted well over a year and a few months and are still working fine even after a few slight hits!!

I just know I am going to jinx myself,but this is the longest I have a had a set of blades for!!

definately one tough blade!!
rich

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12-08-2007 02:08 AM  10 years agoPost 14
Furious Predator

rrProfessor

Kitchener, Ontario, Canada

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i had a set of 710 V's for a while. they survived a crappy auto which resulted in a boom strike. they survived without a scratch. but i was using them as my beaters and was hoping to break them...and when i found out they wont fricking break, i sold them, lol.

i have a set of Rotor Techs that i baught with the predator pretty much exactly a year ago. one blade has a ding on it from a bolt breaking loose, but other then that, they are still alive

Shawn
Team Leisure-Tech
Team HelixRC

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12-08-2007 03:18 AM  10 years agoPost 15
AllThumbs

rrVeteran

New Zealand

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well, my SAB 680's lasted 5 years & looked like new on my Raptor 60 till a engine flame out & bad auto lead me to conver it to 90 with SAB 710'S.

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12-08-2007 03:38 AM  10 years agoPost 16
JRjoe

rrElite Veteran

Jonesville , IN USA #1

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I think you need to ask the wise old owl from the tootsie pop place....LOL


JRjoe.....
Indoor plumbing??? No, we don't need that!!!

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12-08-2007 04:40 AM  10 years agoPost 17
BigBobby

rrApprentice

Yass NSW Australia

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I had a set of SAB 680s last 155 flights (GV1 set to 1800RPM) when the internal structure failed. It created a severe imbalance that my Fury didn't like at all. New Carbon Tech (Rotor Tech in the US) blades and new mast bearings and all was good.
I have used SABs on other helis well past this mark so put it down to bad luck.

A few helis, this and that

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12-08-2007 06:34 AM  10 years agoPost 18
ferincr

rrVeteran

From Argentina now in Costa Rica

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I would love to have this worry at some point in this hobby, but at the moment... unfortunately I don't think I can even bother to find out if there is an answer to this question

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12-08-2007 12:09 PM  10 years agoPost 19
RICH.L

rrKey Veteran

east springfield p.a.

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for me it's not really a worry,more amazement that they are still in one piece!

I think I went through 4 sets of 600 c/f blades this year and a few of them only lasted one flight!!

rich

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