GEE BEE ON FLOATS  
View related threads: (in this forum | in all forums)

Tower Hobbies
Enter up to 4 keywords or Tower stock numbers
Logged in as Guest



Users viewing this topic: none
  Printable Version
       

All Forums >> RC Airplanes >> Seaplanes >> GEE BEE ON FLOATS
Page: [1]

Login
Message << Older Topic   Newer Topic >>
GEE BEE ON FLOATS - 3/15/2008 4:49:16 PM   
TXJETS


 

Posts: 52
Joined: 11/7/2004
From: INGRAM, TX, USA
Status: offline 		PCAM GEE BEE on SEA COMMANDER floats, Saito 450 ready for maiden.

Randy

Attachments
Click to see fullsize image.
Click for fullsize
       Post #: 1

RE: GEE BEE ON FLOATS - 3/15/2008 7:53:24 PM   
Flyboy Dave



Posts: 13447
Joined: 3/20/2002
From: San Bernardino County, CA, USA
Status: offline 		....that should be a knee banger !!

_____________________________

An engineer says.... "That won''t work".
A mechanic says..."Oh yeah, watch this".
"Old Age, and Treachery will overcome youth and skill".
Revver Bro #4.

(in reply to TXJETS)
       Post #: 2

RE: GEE BEE ON FLOATS - 3/16/2008 2:38:21 PM   
JimCasey



Posts: 1557
Joined: 3/4/2002
From: Cookeville, TN, USA
Status: offline 		Cool!!

Is it just the picture or is it perched REALLY HIGH above the floats?

_____________________________

Jim Casey/Seaplane Nerd
http://www.smilesandwags.com/Floats.html

(in reply to Flyboy Dave)
       Post #: 3

RE: GEE BEE ON FLOATS - 3/16/2008 2:54:05 PM   
TXJETS


 

Posts: 52
Joined: 11/7/2004
From: INGRAM, TX, USA
Status: offline 		Dave, yes knee banging time will be at the San Antonio Float Fly in April, thanks Jim, it must be the picture, 14in. from the bottom of the wing to the top of the floats.

Randy

(in reply to JimCasey)
       Post #: 4

RE: GEE BEE ON FLOATS - 3/16/2008 5:29:39 PM   
jrf


 

Posts: 2388
Joined: 12/30/2001
From: Burbank, CA, USA
Status: offline 		It looks great. Interesting project as well.

May I ask why you put it so high off the floats? The normal "rule of thumb" is that the top of the floats should be 2 or 3 inches below the bottom of the propeller arc. With an 18 inch propeller and a 10 inch cowl, that would put the floats 6 or 7 inches below the bottom of the fuselage. I would think that putting them 14 inches below the fuselage (19 inches below the thrustline), as you have them, would create some pretty severe trim issues.

Kinda like flying a twin with a dead engine in knife-edge.

Jim

(in reply to TXJETS)
       Post #: 5

RE: GEE BEE ON FLOATS - 3/16/2008 10:26:07 PM   
TXJETS


 

Posts: 52
Joined: 11/7/2004
From: INGRAM, TX, USA
Status: offline 		JIM, Thanks for the imput, the desgin was done by Sea Commander for this airplane, I will fly her and make changes as needed. I am flying a 24x8 prop on the satio 450, may have to change after the first flight.

Randy

(in reply to jrf)
       Post #: 6

RE: GEE BEE ON FLOATS - 3/16/2008 10:43:44 PM   
jrf


 

Posts: 2388
Joined: 12/30/2001
From: Burbank, CA, USA
Status: offline 		Is that the 97" GBY? I was thinking in terms of the 82" version. I'll have to revise my numbers. 12" cowl and 24" prop, means the "rules of thumb" would have the top of the floats about 10" below the bottom of the fuselage. That is closer to your 14" but I would still anticipate a significant change in the elevator trim vs. the wheeled version. I hope you will let us know how it works out.

Jim

(in reply to TXJETS)
       Post #: 7

RE: GEE BEE ON FLOATS - 3/16/2008 10:59:05 PM   
TXJETS


 

Posts: 52
Joined: 11/7/2004
From: INGRAM, TX, USA
Status: offline 		Yes it is the 97in. model, i am sure i want be doing any knife edges with all the knee action going on at first. I will update after the flight. Thanks again for the imput, it sure made me go back and take a second lookat everything.

Randy

(in reply to jrf)
       Post #: 8

RE: GEE BEE ON FLOATS - 3/19/2008 11:09:10 PM   
TXJETS


 

Posts: 52
Joined: 11/7/2004
From: INGRAM, TX, USA
Status: offline 		Hi again, thanks to Jim and JRF for the heads up, just got and email for Ryan at Sea Commander, we had a comunications glitch and I am now moving the plane 5in. down closer to the floats, puts it right on JRF's numbers. Thanks again for the heads up.

Randy

(in reply to TXJETS)
       Post #: 9

RE: GEE BEE ON FLOATS - 3/19/2008 11:49:09 PM   
jrf


 

Posts: 2388
Joined: 12/30/2001
From: Burbank, CA, USA
Status: offline 		That sounds better. I'm sure we would all like to see pictures of the GBY on the water and in the air. And video if you can.

Jim

(in reply to TXJETS)
       Post #: 10

RE: GEE BEE ON FLOATS - 3/20/2008 12:33:33 AM   
TXJETS


 

Posts: 52
Joined: 11/7/2004
From: INGRAM, TX, USA
Status: offline 		I will get pictures up after the flight ,maybe a video, Thanks again

Randy

(in reply to jrf)
       Post #: 11

RE: GEE BEE ON FLOATS - 3/20/2008 3:19:12 AM   
mogman


 

Posts: 181
Joined: 1/25/2006
From: Pitt Meadows, BC, CANADA
Status: offline 		be careful of the wood prop, they DO NOT like water sprayed on them, erodes the tips away. Use a prop made out of the same stuff as an APC or Master Airscrew.
I've had carbon props have the epoxy eroded away from the back of the blades in a very short time.

< Message edited by mogman -- 3/20/2008 4:03:20 AM >

(in reply to TXJETS)
       Post #: 12

RE: GEE BEE ON FLOATS - 3/20/2008 12:53:30 PM   
TXJETS


 

Posts: 52
Joined: 11/7/2004
From: INGRAM, TX, USA
Status: offline 		Thanks Mogman, Just used the wood for breakin and flying off land, have the new one for water, learned that during the years of flying my MaxAir Drifter Ultralight on floats.

Randy

(in reply to mogman)
       Post #: 13

Page:   [1]
All Forums >> RC Airplanes >> Seaplanes >> GEE BEE ON FLOATS
Page: [1]





Jump to: