RE: Skybolt hangar and clubhouse  
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RE: Skybolt hangar and clubhouse - 6/21/2007 7:03:22 PM   
rc-sport



Posts: 2906
Joined: 4/15/2002
From: Highwood, IL, USA
Status: offline 		Psssst...look to the left, that's my baby. It's sitting motorless for now, I had to borrow the motor for my Funtana 100

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RE: Skybolt hangar and clubhouse - 6/21/2007 10:34:11 PM   
biplanemurphy



Posts: 162
Joined: 2/20/2007
From: Lancaster, CA, USA
Status: offline 		Great lookin' Skybolt Spanishflyer. Please tell us more about your elevator linkage/setup, It looks quite original/nifty.
Really like your strut modifications too.


Murph..........

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RE: Skybolt hangar and clubhouse - 6/21/2007 11:40:37 PM   
MinnFlyer



Posts: 19981
Joined: 4/22/2002
From: Willmar, MN, USA
Status: offline 		Hey Murph, Which pre-tapped hole are you talking about???

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AMA# 42400 www.gettingairborne.com

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RE: Skybolt hangar and clubhouse - 6/22/2007 1:31:51 AM   
ChrisMH



Posts: 220
Joined: 8/27/2006
From: Fort Wayne, IN, USA
Status: offline 		One modification I am considering, after the fact, is cutting a hatch in the bottom forward fuse and either installing a smoke system (less likely), or moving the battery pack to that location (more likely). I hate the fact that I have 10oz of "dead" weight up front, and would like to replace it with something a bit more useful.

Then again, maybe I'll wait until it gets a bit more beat up

Chris



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Chris Hogan
WACO Brotherhood #15 - http://www.houseofmoy.com/waco

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       Post #: 29

RE: Skybolt hangar and clubhouse - 6/22/2007 1:38:03 AM   
biplanemurphy



Posts: 162
Joined: 2/20/2007
From: Lancaster, CA, USA
Status: offline 		Hi Minnflyer...........So the engine I'm using is an OS 120 fs surpassIII 4-stroke with fuel pump. The muffler had a pretapped hole with a plug/screw in it. I took the pressure nipple off an old OS muffler and screwed it in. The muffler they provided must be identical to the one they provide for 120 surpass without pump. The non-pumped version would rely on the backpressure for fuel supply, so it makes no sense that it would melt standard fuel line, and tygon tubing, and the black line that came with sullivan skywriter smoke pump. Here are photos of the muffler.

Thanks.....Murph..........

P.S. other than the melting tubing, the smoke system works great. Nice thick smoke!!! Equal to or better than my friends 26cc gas engine with smoke muffler!!!

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RE: Skybolt hangar and clubhouse - 6/22/2007 1:43:49 AM   
biplanemurphy



Posts: 162
Joined: 2/20/2007
From: Lancaster, CA, USA
Status: offline 		Hi ChrisMH........All my smoke system is in fuselage between servo tray and fuel tank. 8 oz. oil tank, battery and pump all fit well.

Good luck.......the smoke really is fun, and the club guys really love it!!!

Murph.........

P.S. maybe if you put the flight batt. and smoke system batt. where you have your ingenious lead holder, it would maybe balance the same.

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RE: Skybolt hangar and clubhouse - 6/22/2007 4:21:59 AM   
micagreenmachin


 

Posts: 131
Joined: 3/11/2003
From: Mundelein, IL, USA
Status: offline
quote:

ORIGINAL: ChrisMH

One modification I am considering, after the fact, is cutting a hatch in the bottom forward fuse and either installing a smoke system (less likely), or moving the battery pack to that location (more likely). I hate the fact that I have 10oz of "dead" weight up front, and would like to replace it with something a bit more useful.

Then again, maybe I'll wait until it gets a bit more beat up

Chris




I did that when I first built the kit. I consider it a "must do" mod. There's plenty of room for a battery pack up there. Just zip-tie it to the bottom of the fuel tank mount and save some dead weight. Believe it or not, I think I actually got a Sulivan Skywriter to fit up there. Have to work out the details, but a test fit looked promising. I think I can fit the smoke pump, receiver battery and smoke battery all in there and a 10 oz tank will go over the forward wing mount... Won't need any lead in the nose this time. Before I yanked the covering off, I had 2 oz of lead in the nose to make it balance at the aft-most CG location.

It also makes it possible to replace the fuel tank if necessary. It's still not easy, but it is doable with a hatch, I've done it several times.

I say go for it and cut the hatch, you won't be sorry....

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RE: Skybolt hangar and clubhouse - 6/22/2007 8:25:39 AM   
ChrisMH



Posts: 220
Joined: 8/27/2006
From: Fort Wayne, IN, USA
Status: offline 		Well, I had a bit of insomnia this evening, so decided to go ahead and cut a hatch and move my battery forward. Ended up looking pretty good and allowed me to get my battery right up against the firewall.

And...it now balances *exactly* at the aft end of the balance range with *no* additional nose weight. Needless to say, I'm pretty pleased about shaving 10oz off of my Skybolt

Final dry weight: 10lb 6oz.

Now for a nice day...

Chris



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RE: Skybolt hangar and clubhouse - 6/22/2007 9:20:16 AM   
spanishflyer


 

Posts: 26
Joined: 4/24/2004
From: MADRIDnot applicable, SPAIN
Status: online 		Hi Murph,

About the elevator linkage I can tell that is a solution that I saw in F3A planes, unfortunately I have no photos of process oy my installation. I enclose a photo of the part. It is mounted on ball bearings and it moves effortless.

I´ll try to explain, excuse my english...

I mounted that before gluing fin and elevator, but tail must be almost finished in order to take measurements from elevator base.
This kato part is very nice but must be perfect installed and alligned with elevator to get exact movements in both elevators.

After drilling in the sides of fuse, I reinforced with 2mm plywood inside the fuse, in this ply will be the part screwd, and outside is necessary to install two little suplements of ply to keep paralell the ball bearing keepers (see image).

Then is possible to install a sullivan rod direct to servo, this is the easy way
Is possible also to use a pull-pull but you must tune the part with a fiberglass panel, like large servo arms. I did this.

Is not complicated but the narrow fuse at the end makes the work a bit .

Spanishflyer.










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RE: Skybolt hangar and clubhouse - 6/22/2007 2:01:28 PM   
MinnFlyer



Posts: 19981
Joined: 4/22/2002
From: Willmar, MN, USA
Status: offline 		Murph, that may be your problem. You should tap the header, not the muffler

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Mike B.
AMA# 42400 www.gettingairborne.com

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RE: Skybolt hangar and clubhouse - 6/22/2007 5:14:35 PM   
biplanemurphy



Posts: 162
Joined: 2/20/2007
From: Lancaster, CA, USA
Status: offline 		Thanks Minnflyer.......Isn't the header even hotter than the muffler? I could tap it if neccesary, but I am real hesitant, I'm fearful of making the melting worse.

Spanishflyer..........That looks great. So it's called a "Kato"? I like that system for the split elevator, and think i'll look for it for upcoming project!!

ChrisMH........So she went on a bit of a diet? Hope she flies even better now!!!

Thanks guys....Murph.........

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RE: Skybolt hangar and clubhouse - 6/22/2007 5:36:03 PM   
biplanemurphy



Posts: 162
Joined: 2/20/2007
From: Lancaster, CA, USA
Status: offline 		Hi Minnflyer........Just to add a little more confusion....I had the smoke system on a previous model.
The engine was a .70 OS 4-stroke. Tapped the muffler even farther down the line. See the yellow line in photos.
No melting problem, But a much smaller engine. I used the same 20% fuel (could that be the problem??)
I "assume" that a four stroke engine should run about the same temp. So I am really befuddled.

Thanks for the help.....Murph.........


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Flyin'' in the desert.
Tumbleweed Flats Flyers.

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       Post #: 37

RE: Skybolt hangar and clubhouse - 6/22/2007 7:10:12 PM   
MinnFlyer



Posts: 19981
Joined: 4/22/2002
From: Willmar, MN, USA
Status: offline 		First off, you should tap the header pipe because it has less pressure than the muffler (Bernoulli's Principle)

Also, the head has cooling fins, so it is cooler than the muffler. since you're tapping the headder close to the head, the head will act as a heat sync and keep the first part of the header cool (or more accurately, it will keep it cooler than the muffler)

Now, why it worked on one engine and not the other is anybody's guess

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Mike B.
AMA# 42400 www.gettingairborne.com

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RE: Skybolt hangar and clubhouse - 6/23/2007 12:37:41 AM   
surf


 

Posts: 202
Joined: 4/3/2005
From: N. Ferrisburgh, VT, USA
Status: offline 		A little late on the pics, but here is mine, almost three years old. OS FS91

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