YET ANOTHER 4* 120 with a RYOBI 31cc gas  
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YET ANOTHER 4* 120 with a RYOBI 31cc gas - 1/19/2007 11:44:54 AM   
sticktickler



Posts: 253
Joined: 12/30/2006
From: Fort Dodge, IA, USA
Status: offline 		Getting ready to fit the Ryobi 31cc in mine moved the firewall back 1.75" just to make the engine look good and keep the prop up close to the fuse. I also highly recomend making a hatch for the fuel tank up front I love to be able to get inside there when I need to. Now with just two bolts I can easy see pics.



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       Post #: 1

RE: YET ANOTHER 4* 120 with a RYOBI 31cc gas - 1/19/2007 11:46:28 AM   
sticktickler



Posts: 253
Joined: 12/30/2006
From: Fort Dodge, IA, USA
Status: offline 		If you want to save some tail weight then taper down the rudder and elevator see pics below I did the ailerons as well. This also makes the flight surfaces just a little more responsive defiantly worth doing. I really hate the flat wing tips on this plane so I rounded them up I think it looks much better. Well almost ready to cover can’t wait better get at it I’ll post more pics soon.

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RE: YET ANOTHER 4* 120 with a RYOBI 31cc gas - 1/19/2007 12:03:29 PM   
sticktickler



Posts: 253
Joined: 12/30/2006
From: Fort Dodge, IA, USA
Status: offline 		Another thing Sig forget to have you do on this kit is sheet that turtle deck. Here’s how it’s done quick and easy. Notice how there seems to be just enough gap from the stringers to the bulkheads about 1/16”. Well take advantage of that all you need is 6 strips of 1/16” balsa sheet to fit in between the stringers. Carefully cut and trial fit each piece to fit well see pic below. Once all are cut and ready for gluing remove them all. Always use aliphatic wood glue on sheeting much easer to sand use CA only in hidden structures inside the airframe. Put glue on the edges and reinstall each strip back in place use pins to hold in place if necessary. When it’s dry remove pins and sand round and smooth as a baby's bottom it looks so much better and very easy to do without adding much weight.

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< Message edited by sticktickler -- 1/19/2007 7:05:33 PM >

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       Post #: 3

RE: YET ANOTHER 4* 120 with a RYOBI 31cc gas - 1/24/2007 4:30:29 AM   
sticktickler



Posts: 253
Joined: 12/30/2006
From: Fort Dodge, IA, USA
Status: offline 		Got the tail done I keep those gussets going all the way to the back. Put small blocks under the gusset material and tack glue them in now carve and sand to shape. I also glue it up AFTER covering which makes covering it off the plane easer to do.

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< Message edited by sticktickler -- 1/24/2007 4:39:49 AM >

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RE: YET ANOTHER 4* 120 with a RYOBI 31cc gas - 1/24/2007 2:29:14 PM   
Charlie P.



Posts: 2296
Joined: 2/25/2003
From: Port Crane, NY, USA
Status: offline
quote:

I really hate the flat wing tips on this plane so I rounded them up I think it looks much better.


Agreed. Looks much better the way you did them. Nice bash. It's the little details that make 'em yours.

_____________________________

Charlie P.
"Gravity is weak but it is persistant" AMA 747089/IMAA 30723

Oh Lord, your earth is so hard and my planes are so frail.

(in reply to sticktickler)
       Post #: 5

RE: YET ANOTHER 4* 120 with a RYOBI 31cc gas - 1/24/2007 8:30:15 PM   
Canuck 2005


 

Posts: 17
Joined: 9/2/2004
From: Edmonton, AB, CANADA
Status: offline 		Am buying a 4*120 and this will be my first build. I have a good Satio 120 on the bench and am wondering if has enough to fly this aircraft. Just want to fly no hovering power required.

Thanks

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       Post #: 6

RE: YET ANOTHER 4* 120 with a RYOBI 31cc gas - 1/24/2007 9:37:59 PM   
packet


 

Posts: 28
Joined: 12/22/2006
From: Port Orange, FL, USA
Status: offline 		I'm bashing a Fourstar 60. I rounded the wingtips and the rudder and elevator. I also built a cowling of sorts. Just finished covering it with Super Coverite and getting ready to paint. I hate Monokote. Will post pics shortly.

_____________________________

An aircraft is a series of compromises flying in formation.

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RE: YET ANOTHER 4* 120 with a RYOBI 31cc gas - 1/24/2007 11:15:10 PM   
Ricatic


 

Posts: 51
Joined: 4/22/2006
From: Imlay City, MI, USA
Status: offline 		Canuck2005,

There are several of these flying at my club. Although I am powering mine with a RCS 140, most are flown with an OS120. The OS flies it fine so the Saito should work well..

_____________________________

Ricatic
Waco Brotherhood #17

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       Post #: 8

RE: YET ANOTHER 4* 120 with a RYOBI 31cc gas - 1/24/2007 11:37:31 PM   
sticktickler



Posts: 253
Joined: 12/30/2006
From: Fort Dodge, IA, USA
Status: offline 		Yes that will fly her just great and is a good engine I also have one in my Mustang. IF you have any other questions on your build please continue to ask me here so others can read them too thanks.
quote:

ORIGINAL: Canuck 2005

Am buying a 4*120 and this will be my first build. I have a good Satio 120 on the bench and am wondering if has enough to fly this aircraft. Just want to fly no hovering power required.

Thanks



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< Message edited by sticktickler -- 1/25/2007 12:48:15 AM >

(in reply to Canuck 2005)
       Post #: 9

RE: YET ANOTHER 4* 120 with a RYOBI 31cc gas - 1/26/2007 5:41:45 PM   
Canuck 2005


 

Posts: 17
Joined: 9/2/2004
From: Edmonton, AB, CANADA
Status: offline 		Thanks Stickbuilder.
Saturday I am picking up my kit. Have most of my building tools but too do the little extras that you have suggested what would a extra material list be. As this is my first build I am pretty green on a lot of things, so I might be a bit of a pain.

(in reply to sticktickler)
       Post #: 10

RE: YET ANOTHER 4* 120 with a RYOBI 31cc gas - 1/26/2007 6:32:30 PM   
sticktickler



Posts: 253
Joined: 12/30/2006
From: Fort Dodge, IA, USA
Status: offline 		No pain at all ask anything anytime. Well let me see do you have some T pins? They are a must I have two sanding blocks one is course and the other is fine for smoothing. For filling I use light weight wall spackling get Red Devel it drys hard but easy to sand.You can't have to many x-acto knives handles (they seem to just walk away) and #11 blades buy them by the 100 pack from Tower Hobbies you'll need-em. And a good steel yard stick for trimming sheet balsa is handy Shoppers Supply has those for few bucks. Buy lots of clamps you can never have to many clamps see link below.
http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=8826
http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=92874
http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=47398
quote:

ORIGINAL: Canuck 2005

Thanks Stickbuilder.
Saturday I am picking up my kit. Have most of my building tools but too do the little extras that you have suggested what would a extra material list be. As this is my first build I am pretty green on a lot of things, so I might be a bit of a pain.



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< Message edited by sticktickler -- 1/26/2007 6:51:21 PM >

(in reply to Canuck 2005)
       Post #: 11

RE: YET ANOTHER 4* 120 with a RYOBI 31cc gas - 2/6/2007 3:27:04 PM   
sticktickler



Posts: 253
Joined: 12/30/2006
From: Fort Dodge, IA, USA
Status: offline 		I'm putting the servos in the tail to use shorter 4-40 push rods. If anyone plans to do this mod don't remove the cutouts in the tail and glue them in solid. Also back up your servo cutouts (see pick) with some ply scrap this will make your servo mounts more solid.

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