325 blade root question

Dylan Hudock · 04-12-2012, 11:59 PM

Yesterday I crashed my 450

onto the flying field runway that is made out of tarp over sand. The blades (Align 325d pros) look fine except that as they hit the dirt one blade folded back into the blade grip and made a small indent in the blade. There is also tiny hair line crack going in about 1/8 of an inch. The crack is only on the the top of the blade. I have flowed thin CA into the indent/crack. Do any of you guys think it is still ok to fly with the blades?

Dylan

Dumbthumb75 · 04-13-2012, 02:49 PM

I guess the cracked blade is CA'd, so you don't need to buy a new set (In essence, save money).

Here's how I see it :

If the repaired blade suddenly let's go midflight, your heli will shake itself to bits in an instant + chrash damage when it hits the ground. Now you face a serious rebuild, and on top of that you'll still have to buy a new set of blades.
A very expensive set of 450 blades...
Not to speak of the danger to yourself and others, when a thin strip of CF gets flung in your face at 3000rpm...

Some light tip damage can be accepted, but not root damaged. A safety issue + a set of new blades are way cheaper than a potential rebuild, in any case...

Dylan Hudock · 04-13-2012, 05:18 PM

Thanks for your response!

Thats what I was thinking, I just wanted to be sure.

Dumbthumb75 · 04-13-2012, 05:41 PM

Volcano · 05-09-2012, 12:24 AM

Id say the nick is no problem, but I havent seen cracks coming from it in my blades. If I saw a crack coming from the nick id trash it, itll probably flex and ca cant hold flexing repeatedly.

04-12-2012, 11:59 PM	#1
Dylan Hudock Registered Users Join Date: Jun 2011 Location: Owatonna, Minnesota	325 blade root question Yesterday I crashed my 450 onto the flying field runway that is made out of tarp over sand. The blades (Align 325d pros) look fine except that as they hit the dirt one blade folded back into the blade grip and made a small indent in the blade. There is also tiny hair line crack going in about 1/8 of an inch. The crack is only on the the top of the blade. I have flowed thin CA into the indent/crack. Do any of you guys think it is still ok to fly with the blades? Dylan __________________ EXI 500 EXI 450 pro Futaba 6J

04-13-2012, 02:49 PM	#2
Dumbthumb75 Registered Users Join Date: Apr 2009 Location: Oslo, Norway	I guess the cracked blade is CA'd, so you don't need to buy a new set (In essence, save money). Here's how I see it : If the repaired blade suddenly let's go midflight, your heli will shake itself to bits in an instant + chrash damage when it hits the ground. Now you face a serious rebuild, and on top of that you'll still have to buy a new set of blades. A very expensive set of 450 blades... Not to speak of the danger to yourself and others, when a thin strip of CF gets flung in your face at 3000rpm... Some light tip damage can be accepted, but not root damaged. A safety issue + a set of new blades are way cheaper than a potential rebuild, in any case... __________________ minicopter Diabolo, Henseleit TDR, MA Spectra-G, Raptor 50T Futaba 2.4 GHz

04-13-2012, 05:18 PM	#3
Dylan Hudock Registered Users Thread Starter Join Date: Jun 2011 Location: Owatonna, Minnesota	Thanks for your response! Thats what I was thinking, I just wanted to be sure. __________________ EXI 500 EXI 450 pro Futaba 6J

04-13-2012, 05:41 PM	#4
Dumbthumb75 Registered Users Join Date: Apr 2009 Location: Oslo, Norway	__________________ minicopter Diabolo, Henseleit TDR, MA Spectra-G, Raptor 50T Futaba 2.4 GHz

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05-09-2012, 12:24 AM	#5
Volcano Join Date: Jan 2010 Location: chicago	Id say the nick is no problem, but I havent seen cracks coming from it in my blades. If I saw a crack coming from the nick id trash it, itll probably flex and ca cant hold flexing repeatedly.