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help!! starting - 7/30/2008 5:34:11 PM   
spyder012


 

Posts: 14
Joined: 7/30/2008
From: lagrange, TX, USA
Status: offline 		ok im new to the rc airboat thing me and my friend have a feather light 25cc engine we need to know how to convert it to a air boat we also need to know what prop size and hull size

hunter

< Message edited by spyder012 -- 7/31/2008 4:29:07 AM >
       Post #: 1

RE: help!! satarting - 7/30/2008 10:17:14 PM   
D-Mo


 

Posts: 5
Joined: 7/30/2008
From: , TX, USA
Status: offline 		i think u should use a 12x8 prop



Dustin

(in reply to spyder012)
       Post #: 2

RE: help!! satarting - 7/30/2008 10:58:02 PM   
mr. ilikehelp


 

Posts: 292
Joined: 7/19/2007
From: mpls, MN, USA
Status: offline 		well proaablly somthing like 18 in. by 36 in. thats what i would say but ive never built a gas boat

(in reply to D-Mo)
       Post #: 3

RE: help!! satarting - 7/30/2008 11:15:19 PM   
gary mullens


 

Posts: 59
Joined: 10/14/2004
From: Coshocton, OH, USA
Status: online 		16x8 or 18x6. the 16x8 will give you lower cg. Hull, I would suggest 18" wide by 47 to 48 inches long. 1/8 door skin works good but shop for a good piece.

-Gary

(in reply to mr. ilikehelp)
       Post #: 4

RE: help!! satarting - 7/30/2008 11:25:14 PM   
spyder012


 

Posts: 14
Joined: 7/30/2008
From: lagrange, TX, USA
Status: offline 		thanks!

cg??

(in reply to gary mullens)
       Post #: 5

RE: help!! satarting - 7/31/2008 7:48:45 AM   
crispyspa



Posts: 853
Joined: 11/2/2004
From: onalaska, WI, USA
Status: offline 		cg= Center of Gravity. The higher the engine is in the air, the higher the CG....the higher the CG the more tippy it will be.

CG is no to be confused with CB..Center of Balance. The CB is where the hull would balance if placed on a dowel.

_____________________________

"Are you alright, son? I keep hearing the most terrifying sounds in there." (Foghorn Leghorn)

(in reply to spyder012)
       Post #: 6

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