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Sanding down Moses wings

 
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Lior

Since 26 Mar 2015
47 Posts

 



PostMon Sep 13, 21 10:11 am    Sanding down Moses wings Reply with quote

Hi everyone,
I am using the Moses 633/483 wings and I would like to sand down their trailing edges so they are less sharp. I am free riding ,no jumping or racing Smile

Did anyone try to do it? If so …

- which sand paper did you use for the task?
- Any best practices & tips?
- Any noticeable impacts to the wing performance post sanding?

Thanks,
Lior

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wylieflyote

Since 30 Jun 2006
1614 Posts
Puget Sound & Wa. Coast
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PostMon Sep 13, 21 11:18 am     Reply with quote

Jump to 1:57 in this video:
https://www.youtube.com/watch?v=oidk2I2A0tQ

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Kip Wylie

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Singlemalt

Since 21 Jun 2015
385 Posts
White Salmon
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PostMon Sep 13, 21 12:23 pm     Reply with quote

Following this discussion. Somewhere here on NW kite, a few months back, there was a thread with detailed instructions and diagrams.

If I can dig it up, I’ll post the link.

I have some wingsets I’m itching to try, but I need to dull the sharp edges first.[url]

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watercamper

Since 08 Sep 2017
64 Posts
Boise
 



PostMon Sep 13, 21 3:50 pm     Reply with quote

wylieflyote wrote:
Jump to 1:57 in this video:
https://www.youtube.com/watch?v=oidk2I2A0tQ


Be aware that he changes his advice in one of his next videos.

https://www.youtube.com/watch?v=vMieQ_pdsPA

He says that if you do the square edge, it whistles badly. He further says in the next video to take those 2 square edges and round them over slightly.

Here's another perspective from Lift:

https://vimeo.com/311215223

So, what's a foiler to do? 2 differing viewpoints really.

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Nak

Since 19 May 2005
4031 Posts
Camas
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PostMon Sep 13, 21 9:10 pm     Reply with quote

I've sanded all of the trailing edges on my Moses masts, stabs, 633, 790 and 873 wings. Absolutely no singing or noticeable effect on performance. It's critical though to use a very rigid sanding block; the edge must be square or it will sing. Use 400 grit sandpaper to slow things down. Check the thickness of the edge often, you're looking for 1 - 1.5 mm thick edges, no more. You'll need good calipers or a micrometer, and a high power magnifier helps a lot too. Once you get your edges, use 600 grit sandpaper to very lightly take the sharp edge of the upper and lower edge of the square trailing edge. Not too much, just enough to take off the sharpness. One very light pass should do it.

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Lior

Since 26 Mar 2015
47 Posts

 



PostMon Sep 20, 21 12:44 pm     Reply with quote

great information. I will try it out and report back...

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