What do y'all think internal damage? - HeliFreak
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Old 08-19-2016, 06:20 PM   #1 (permalink)
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Default What do y'all think internal damage?

Trying to get some input I've been inspecting my blade after reading all of this and one of my 600mm blades has an odd mark at the the have never been nicked crashed abused and flown around 1500-1600 lhs setupClick image for larger version

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Old 08-19-2016, 06:23 PM   #2 (permalink)
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Not seeing what your looking at
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Old 08-19-2016, 06:37 PM   #3 (permalink)
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At the edge of the top blade it has what almost looks like scuff but it isn't goes from front edge then cuts up toward the tip at the rear
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Old 08-19-2016, 06:58 PM   #4 (permalink)
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Ah, I see what your looking at, I cant tell. I would think it to be a polish mark. Go with your gut.
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Old 08-21-2016, 10:23 AM   #5 (permalink)
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Looks like a clear issue, the ones that failed the most were the 690 energy's really.
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Old 08-21-2016, 11:32 AM   #6 (permalink)
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It seems to be surface but it's like it follows a exact path... This old girl has never been crashed, the worst that's happened to her is a rough ride in Bertha (suburban) and scratch the canopy
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Old 08-23-2016, 08:26 AM   #7 (permalink)
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Quote:
Originally Posted by vtown nick View Post
Looks like a clear issue, the ones that failed the most were the 690 energy's really.


Not correct. There have been failures of various sizes etc. the main thing to look for is delamination on the trailing edge. Any pin holes or voids in the trailing edge and they should be discarded. The seam should not have ANY holes or slices/voids or you will be susceptible to a delam.

You can also hold the root and tip of the blades and impose a twisting force on them to see if the blades hold up to the strain. The forces on those blades in flight is much greater than you will produce by twisting with your hands.
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Old 08-26-2016, 05:59 PM   #8 (permalink)
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They survived the twist test and have flown the since. But I have a pair of rails I just painted to match the bird. The zeals will become back up blades. Click image for larger version

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Old 09-10-2016, 07:58 AM   #9 (permalink)
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How did you paint your rails?
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Old 09-10-2016, 10:04 AM   #10 (permalink)
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Airbrush, scale, tape and time. Taped and 800 sand paper where I wanted the paint. Cleaned with alchole. Weighed the paint Counted my strokes and tried to stay the same speed throughout. Balanced and cg stayed very good at the end but I was going to use more paint to get them to Match if they didn't.
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Old 09-10-2016, 11:01 AM   #11 (permalink)
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Those rails look very good. Great job on em.

My airbrush skills are lacking far behind yours lol.
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Old 09-10-2016, 01:17 PM   #12 (permalink)
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Thank you! I'm sure you could do if you have the basics of air brushing. I'm no wizard with one. Main thing is don't rush a paint job.
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