RE: Great Planes Seawind  
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RE: Great Planes Seawind - 12/13/2005 9:02:59 PM   
MinnFlyer



Posts: 19375
Joined: 4/22/2002
From: Willmar, MN, USA
Status: offline 		Well, I will say this: Seeing as how my retracts are designed to use a Sullivan Gold-n-rod, they are probably the ONLY mechanical retracts that would be practical.

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(in reply to RVman)
       Post #: 226

RE: Great Planes Seawind - 12/13/2005 9:12:38 PM   
RVman


 

Posts: 544
Joined: 6/2/2003
From: Guelph, ON,
Status: offline 		yeah that and they are the only ones that i could find that will take the weight

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Tom G.

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       Post #: 227

RE: Great Planes Seawind - 12/14/2005 12:24:26 AM   
seanychen



Posts: 2914
Joined: 7/20/2002
From: Canton, MI, USA
Status: offline
quote:

ORIGINAL: Fast Freddy

RCV ENGINE FOR SEAWIND
Anyone have any opinions on using an RCV engine for the Seawind? Their slim profile and high power to weight ratio might make it an ideal candidate. Any thoughts would be appreciated.


I looked at the RCV 91, and its power is not too impressive. It's about the same as Saito 72 or OS 70 Surpass, swinging APC 13x6 @ 10500 rpm, APC 13x8 @ 9600 rpm, APC 14x6 @ 9000 rpm. It should swing Graupner 12x5 x 7 3-bladed prop at mid 9k, so should fly the plane. As for dimension, its height from crank shaft center to top of head is 81.4mm, so the head will just stick out the cowl a little. But the intake manifold should be contained.


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E_Total = M*G*H + 1/2 M*V^2
When H=0, all of airplane's velocity becomes crash energy!

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       Post #: 228

RE: Great Planes Seawind - 12/14/2005 1:39:58 AM   
Fast Freddy


 

Posts: 101
Joined: 6/22/2003
From: Madison, WI, USA
Status: offline 		Sean, Yeah I agree, I think the RCV will be underpowered. I think I will go with GP original recommendations, either an OS 60 FX 2s or a 90/91 4s. Thanks

(in reply to seanychen)
       Post #: 229

RE: Great Planes Seawind - 12/15/2005 3:43:08 AM   
seanychen



Posts: 2914
Joined: 7/20/2002
From: Canton, MI, USA
Status: offline 		I have thought about using YS 63-S on this plane. It will fit quite well, with only the slim black valve cover sticking out. Muffler can even be routed to exit from the side aft airscoop right behind the cowl, through the use of a 90 deg elbow. Power of YS 63 on 30% nitro is stronger than a normal 61 2-stroke.

_____________________________

E_Total = M*G*H + 1/2 M*V^2
When H=0, all of airplane's velocity becomes crash energy!

(in reply to Fast Freddy)
       Post #: 230

RE: Great Planes Seawind - 12/15/2005 11:27:28 PM   
Strykaas



Posts: 4089
Joined: 3/21/2003
From: Paris, FRANCE
Status: offline 		Any building/setup pix, guys ?? We haven't seen many

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RE: Great Planes Seawind - 12/16/2005 12:23:55 AM   
RVman


 

Posts: 544
Joined: 6/2/2003
From: Guelph, ON,
Status: offline 		just wait a few days and i should have some pics up soon

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       Post #: 232

RE: Great Planes Seawind - 12/16/2005 3:54:25 AM   
Hookedonairplanes


 

Posts: 22
Joined: 10/12/2003
From: St. CatharinesOntario, CANADA
Status: offline 		Hey there,

Easy to fix the canopy. Get rid of the plastic canopy and replace it with a FRP one. The clear plastic on the canopy is completely painted anyway. Furthermore, with a FRP canopy you could, more than likely get rid of the framing inside as well.

Roy

(in reply to Fast Freddy)
       Post #: 233

RE: Great Planes Seawind - 12/16/2005 3:59:27 AM   
PaulG-RC



Posts: 587
Joined: 10/26/2003
From: ile-Bizard, Montreal, QC, CANADA
Status: offline 		You lost me Roy

FRP ?

Paul

(in reply to Hookedonairplanes)
       Post #: 234

RE: Great Planes Seawind - 12/16/2005 2:30:00 PM   
jetlag


 

Posts: 49
Joined: 2/1/2003
From: Columbia, SC, USA
Status: offline 		Free Range Plastic? How do catch those little guys?
Allen

Seriously though, is it fiberglass-reinforced plastic?

< Message edited by jetlag -- 12/16/2005 2:31:41 PM >

(in reply to PaulG-RC)
       Post #: 235

RE: Great Planes Seawind - 12/17/2005 4:23:10 AM   
RVman


 

Posts: 544
Joined: 6/2/2003
From: Guelph, ON,
Status: offline 		I started on the plane today. i got the engine mounted and cowl all cut out and thats about it for now. All the formers in the main fuse are loose and the balsa sheet for the rudder hinges is broken at the bottom. Since i am going to be cutting a hole for the water rudder i will fix the rear formers then. I was a little disappointed by the loose formers but otherwise the plane is perfect and the canopy is perfect as well nothing loose. The finish on the plane is outstanding way better than what i could do. I am still waiting for my servos, retracts and stuff to get here.

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Tom G.

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       Post #: 236

RE: Great Planes Seawind - 12/21/2005 1:17:48 AM   
Skyventures



Posts: 61
Joined: 11/8/2002
From: Fox Creek, AB, CANADA
Status: offline 		Hello Tom G.,
What balsa sheet are you referring to that is cracked?

(in reply to RVman)
       Post #: 237

RE: Great Planes Seawind - 12/23/2005 12:33:57 AM   
maxiemac


 

Posts: 12
Joined: 1/9/2005
From: Melbourne, AUSTRALIA
Status: offline 		I have read these posts with interest but since late October I havent read where anyone has actually flown off water and reported their findings. I have just learned of one Seawind 'downunder' that 'digs in' badly when trying to take off. From the Tower Hobbies video the takeoff is from very smooth water - what happens when there is a one to two inch ripple on the water? Any comments?

(in reply to Strykaas)
       Post #: 238

RE: Great Planes Seawind - 12/23/2005 2:18:20 PM   
gouda


 

Posts: 91
Joined: 8/31/2002
From: Edina, MN, USA
Status: offline 		Look at the other Seawind thread. That has actualy flight reports>
http://www.rcuniverse.com/forum/m_3486829/tm.htm

I don't recall the problem you mention.

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       Post #: 239

RE: Great Planes Seawind - 12/23/2005 5:35:36 PM   
flying_phil