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Incidence Question - 4/7/2008 6:12:59 PM   
Flyboy76



Posts: 439
Joined: 8/15/2005
From: Go Riders Go!!!!!!!, CANADA
Status: offline 		Hello all , i am in the process of putting floats on my Euro Hobbies Beaver. My question is i am not familiar with figuring out wing incidence and the wing is 7 1/2" from front to back and the front is 3/4's of an inch higher at the front when the floats are level. Is this to much??

Geoff

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When life deals you a lemon do as i do and make a whisky sour!!!
       Post #: 1

RE: Incidence Question - 4/8/2008 2:11:34 AM   
jrf


 

Posts: 2368
Joined: 12/30/2001
From: Burbank, CA, USA
Status: offline 		Far too much. You have 6 degrees of negetive incidence in the floats. 2 degrees would be plenty for a flat bottom wing and 2 degrees over 7 1/2 inches would only be 1/4".

Jim

(in reply to Flyboy76)
       Post #: 2

RE: Incidence Question - 4/8/2008 3:37:36 PM   
Flyboy76



Posts: 439
Joined: 8/15/2005
From: Go Riders Go!!!!!!!, CANADA
Status: offline 		Thank you very much I will make the necc. adjustments

geoff

_____________________________

When life deals you a lemon do as i do and make a whisky sour!!!

(in reply to jrf)
       Post #: 3

RE: Incidence Question - 4/8/2008 8:07:27 PM   
cyclops2


 

Posts: 1815
Joined: 12/23/2005
From: Frenchtown, NJ, USA
Status: online

I fly this boat with 0 degrees difference between the flat bottomed Clarke Y's of the wing and tail. It simply builds speed and lift up looking flat. It glides in to land by staying level and simply sinking as power is reduced.

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(in reply to Flyboy76)
       Post #: 4

RE: Incidence Question - 4/8/2008 10:34:13 PM   
vertical grimmace


 

Posts: 1142
Joined: 3/13/2004
From: ft collins , CO, USA
Status: offline 		I read in a column from MAN that you want 0 degrees between the floats and the wing. Otherwise you will not lift off with out adding a bunch of elevator. He also recommended NOT using wood props as they are too fragile to handle the water. The other tip was to have a wide stance to help avoid tipping over.

(in reply to cyclops2)
       Post #: 5

RE: Incidence Question - 4/8/2008 11:34:58 PM   
jrf


 

Posts: 2368
Joined: 12/30/2001
From: Burbank, CA, USA
Status: offline 		You want approximately 2 degrees positive incidence in the wing when the floats are level. That is the same as 2 degrees negetive in the floats when the wing is level. 0 degrees is seldom enough.

Jim

(in reply to vertical grimmace)
       Post #: 6

RE: Incidence Question - 4/15/2008 6:15:45 PM   
Flyboy76



Posts: 439
Joined: 8/15/2005
From: Go Riders Go!!!!!!!, CANADA
Status: offline 		Just like to say thanks to the guys that replied to my question. I have set up the floats with as instructed and will be re-maidening it this weekend. The last floats i had got water under the covering and rotted a bit so i put new floats on and recovered the plane.

Geoff

_____________________________

When life deals you a lemon do as i do and make a whisky sour!!!

(in reply to jrf)
       Post #: 7

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