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N.Y.M. Flutter

Posted: Wed, Jun 11 2014, 08:26 PM
by swannie
Hey guys,

Anyone have any amount of time on any of the NYM kites yet? I flew mine a bit over the weekend and the trailing edge fluttered quite a bit. I tried to tighten the bottom bungies a bit but it didn't seem to help. I don't have flutter problems with any of my other kites, but if/when I do it can usually be solved with more brake, but I couldn't tune it out of this one.

Anyone else noticed this?

Brian

Re: N.Y.M. Flutter

Posted: Wed, Jun 11 2014, 08:56 PM
by makatakam
Tighten the leading edge bungees also, that will pull the bottoms of the upright spars outward and tighten the trailing edge.

Re: N.Y.M. Flutter

Posted: Wed, Jun 11 2014, 10:13 PM
by swannie
I'll try that one too - I don't think I've ever adjusted those on a 1.5. :)

Re: N.Y.M. Flutter

Posted: Thu, Jun 12 2014, 12:46 PM
by Mike
I've flown NYMs and haven't had that trouble. You're right in that is usually solved by more brake.
If you can't get it to work, talk to Big Mike when he comes back from Canada.

Re: N.Y.M. Flutter

Posted: Fri, Jun 13 2014, 10:00 PM
by goestoeleven
Well, if you don't like it, I could see what I have to trade . . .

;-) :jester:

Re: N.Y.M. Flutter

Posted: Sat, Jun 14 2014, 01:05 AM
by makatakam
Mike wrote:I've flown NYMs and haven't had that trouble. You're right in that is usually solved by more brake.
If you can't get it to work, talk to Big Mike when he comes back from Canada.


I've talked to Big Mike...it didn't stop the flutter.

Re: N.Y.M. Flutter

Posted: Wed, Jun 18 2014, 08:46 AM
by backdraft
Brian, Did the suggestions work?

Big Mike

Re: N.Y.M. Flutter

Posted: Wed, Jun 18 2014, 03:25 PM
by swannie
backdraft wrote:Brian, Did the suggestions work?

Big Mike


Saddly, I haven't had a chance to try yet... :)

Re: N.Y.M. Flutter

Posted: Wed, Jul 02 2014, 09:56 AM
by Shari
On my custom it flutters like a butterfly on all my spars except the 3 wraps. So I fly with 3 wraps.

Re: N.Y.M. Flutter

Posted: Sun, Sep 14 2014, 01:38 PM
by Rudy64
Just saw this post. I have the same problem with my NYM. I have tried tightening the different combinations of the leading, and trailing edges, but the flutter still remains.
And, the flutter can be quite noisy.

Re: N.Y.M. Flutter

Posted: Sun, Sep 14 2014, 09:34 PM
by Mike
Rudy64 wrote:Just saw this post. I have the same problem with my NYM. I have tried tightening the different combinations of the leading, and trailing edges, but the flutter still remains.
And, the flutter can be quite noisy.


Do you have any other Revs?

I'll be heading up to to Madison this Thursday and it's possible that I could stop in Janesville to give your kite a quick test if you're available in the early afternoon.

Re: N.Y.M. Flutter

Posted: Tue, Sep 16 2014, 11:08 AM
by Rudy64
Shari wrote:On my custom it flutters like a butterfly on all my spars except the 3 wraps. So I fly with 3 wraps.


Thanks for the tip! I tried a 3 wrap in 8-10 mph and almost no flutter. Big difference. Don't know how the 3 wrap will work in light winds though.

Re: N.Y.M. Flutter

Posted: Tue, Sep 16 2014, 02:35 PM
by cadguy
I do not have a NYM, but I fly with 3 wraps all the time in my revs, even in 3mph.
It's all in the technique.

Re: N.Y.M. Flutter

Posted: Tue, Sep 16 2014, 02:53 PM
by goestoeleven
What rods were in it with the flutter? Green?

Re: N.Y.M. Flutter

Posted: Tue, Sep 16 2014, 04:41 PM
by Mike
interesting...
compare the lengths of the rods that fluttered with the 3 wraps. Are the flutterers shorter?

Re: N.Y.M. Flutter

Posted: Tue, Sep 16 2014, 07:33 PM
by Rudy64
goestoeleven wrote:What rods were in it with the flutter? Green?

Yes, it came with the green race rods.

Re: N.Y.M. Flutter

Posted: Tue, Sep 16 2014, 07:55 PM
by Rudy64
Mike wrote:interesting...
compare the lengths of the rods that fluttered with the 3 wraps. Are the flutterers shorter?

Just checked. Green race rods are the same length as 3 wraps.

Re: N.Y.M. Flutter

Posted: Tue, Sep 16 2014, 08:20 PM
by Rudy64
Mike wrote:
Rudy64 wrote:Just saw this post. I have the same problem with my NYM. I have tried tightening the different combinations of the leading, and trailing edges, but the flutter still remains.
And, the flutter can be quite noisy.


Do you have any other Revs?

I'll be heading up to to Madison this Thursday and it's possible that I could stop in Janesville to give your kite a quick test if you're available in the early afternoon.


I also have a custom 1.5 mid vent. Mark (makatakam) adjusted it to remove some flutter, and it's fine.
Yes, I'll be available early afternoon on Thursday, if it's no bother. I'd appreciate it. I fly about 1 mile from the interstate.

Re: N.Y.M. Flutter

Posted: Wed, Sep 17 2014, 03:32 PM
by Mike
HI Rudy,
I have to reschedule. I can stop on the way back. That would be early Sunday afternoon.
If that works for you, PM me your phone # and the location of the park.

Re: N.Y.M. Flutter

Posted: Wed, Sep 17 2014, 10:16 PM
by Shari
It was the bend in the fame that gave me the flutter. The stiffer 3 wrap removed the flutter almost completely. Glad it helped.