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05-02-2005 06:32 PM  13 years agoPost 1
newbe2

rrNovice

Salem, MA

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Hello all,

I took my Hawk Sport out for the first time after the long winter. I noticed some serious vibration (very fast but not fall out of the sky big). When I checked it over, I noticed that the shrink wrap on both the baldes was very loose. Could this cause the vibration I saw? I just heated the wrap with a hair dryer and it tightened back up. Before I try to fly it again, I thought I'd get some input.

Thanks in advance!!

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05-02-2005 06:54 PM  13 years agoPost 2
Gearhead

rrMaster

Vt

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sure it could, loose shrink wrap would create drag,,, let us know what happens..

Jim

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05-02-2005 10:40 PM  13 years agoPost 3
SteveH

rrProfessor

Texas

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Additionally, wood blades tend to absorb moisture from the air if it is very humid, and may require reballancing and tracking periodically.

The government cannot give you anything without first taking it from someone else.

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05-02-2005 11:41 PM  13 years agoPost 4
BC Don

rrElite Veteran

Calgary, AB Canada

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I'm running my woodies around 1800 RPM.

YES, when you first get them, I've found the shrink wrap to always be a bit loose. When I get the blades I use medium CA to glue the roots on and create a small fillet of CA around the edge so no air can get in. I also cover the root with CA (the exposed wood). I then take a heat gun and shrink down the covering. Then I balance them.

You'll also find that a week later you'll be able to shrink the wrap down a bit again - not as much as the first time but somewhat.

Got Money? Send it to me, I'm a Heli Addict.

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05-06-2005 05:23 PM  13 years agoPost 5
jackheli

rrProfessor

Vancouver - Canada

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Try not to apply too much heat or you could end up with a warped blade. Also, try to distribute the heat evenly between upper and lower sides so that one side will not pull harder than the other and force it to bend.

It's easy to find an excuse to do wrong. Hard is not to find an excuse to do right.

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05-06-2005 05:59 PM  13 years agoPost 6
BC Don

rrElite Veteran

Calgary, AB Canada

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Oooooo, that's an EXCELLENT point. I had one of my blades warped a bit, didn't think too much about it but it could have been due to the way I shrunk the covering down. Next time I'll make sure that I shrink it all down at the same time (both sides and ends). In the past I started at the tip on one side, shrunk to the root then did the other side. I'll hold the whole blade up now and do "it all at once".

Got Money? Send it to me, I'm a Heli Addict.

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