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Old 05-17-2019, 02:09 AM
  #40576  
Jesse Open
 
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Working on the Dragonlady, fitting the Saito 125. Pretty tired of fuel creep from firewall underneath the Monokote. Using an aluminum firewall deck. It caps and clamps the covering edge. A thin bead of silicone RTV around the perimeters makes for a leak proof seal. Also using an ABS flanged feed thru for the fuel line passage Used this system on the Rascal 110 as well.

Old 05-17-2019, 03:31 AM
  #40577  
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Classic hotrod firewall, I like it.
Old 05-17-2019, 04:28 AM
  #40578  
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Gary
As cool of stuff you make and I mean you make some cool stuff
whats with the generic motor mount.
Old 05-17-2019, 04:41 AM
  #40579  
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Maybe it has some dampening affect or he just likes it?
Old 05-17-2019, 06:49 AM
  #40580  
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Gary, check your PMs for tracking number. Delivery scheduled for today!
Old 05-17-2019, 07:49 AM
  #40581  
Jesse Open
 
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OK Geekster, will keep an eye out. Thank you!

The plastic mount with aluminum saddle is something I really wanted to try out. Yes, a dampening aspect as well as a breakaway mechanical fuse. The combination of the saddle and aluminum firewall really make for a solid footprint,
The engine is quite far from the firewall so I may wind up going back to aluminum rails. I was going to use a 120 Dual Plug, Pumped Saito but this bugger fits a LOT better and can swing a pretty decent stick of lumber. Good chance it will get a CDI (Blame SR Tele fot tempting me to do that again!)
Of course that would still be methanol fuel.
Old 05-17-2019, 09:04 AM
  #40582  
the Wasp
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Gary, nice job, I like it !
but, what size is your plane, if it's the .60 size it sure will climb-out with the 125 in it, my kind of plane

Jim
Old 05-17-2019, 09:13 AM
  #40583  
Jesse Open
 
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The instructions say .90 to 1.20 4 stroke.
I think that is the one they call a "60" size (?)
never could decipher.
Old 05-17-2019, 09:25 AM
  #40584  
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Originally Posted by Jesse Open
The instructions say .90 to 1.20 4 stroke.
I think that is the one they call a "60" size (?)
never could decipher.
Pretty much. .60 2 stroke is about a 1.2 4 stroke equivalent. Of course that dates back to when the 4s weren't as strong as they are today. A .90 2s is a 1.8 4s. According to my Ziroli B-25 plans, so the FG-30 should be the perfect size for it.
Old 05-17-2019, 01:01 PM
  #40585  
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Yep, that old school rule got set aside, especially whe the YS 4 strokes appeared.

You hear some folks mention a120 size Dragonlady but I have only ever seen this size and the 40 size. I am still thinking about just using a YS 80 on this plane. It would sure fit a lot better.
Old 05-17-2019, 02:43 PM
  #40586  
the Wasp
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errrrrrrrrrrrrrrrrrrrrrrrrrrrr,
guys, so what's going on here,

when I tighten down the Carb to the back plate on my 100 the Barrel wont turn, how can I get a warp in the Carb, it so thick,

has any one seen this before ???

Jim
Old 05-17-2019, 02:46 PM
  #40587  
Hobbsy
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I tighten them to 10 inch pounds, I have never seen tat happen.
Old 05-17-2019, 03:15 PM
  #40588  
the Wasp
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for another thing you can see the Slot in the barrel was not milled very well, you can see the High's and Low's from milling on the sides of the Slot, it doesn't turn smooth in the Carb Body.

I have worked on it for almost 2 hours, the next thing to try is a thicker Lock Washer if I can find one, if that doesn't work I will most likely have to order a new barrel

Jim
Old 05-17-2019, 04:22 PM
  #40589  
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Originally Posted by the Wasp
for another thing you can see the Slot in the barrel was not milled very well, you can see the High's and Low's from milling on the sides of the Slot, it doesn't turn smooth in the Carb Body.

I have worked on it for almost 2 hours, the next thing to try is a thicker Lock Washer if I can find one, if that doesn't work I will most likely have to order a new barrel

Jim
Is that the brand new 100 carb I sent you Jim? Is so, I'm sure Horizon will replace it.
Old 05-17-2019, 05:59 PM
  #40590  
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Originally Posted by Glowgeek
Is that the brand new 100 carb I sent you Jim? Is so, I'm sure Horizon will replace it.
yes, but I would have to send it to you first, I have to order 3 servos and a bunch of stuff so I will also order a new barrel, no biggy,

I swapped the retaining screw with the one from the 82, it's smoother now but not a lot

Jim
Old 05-17-2019, 06:26 PM
  #40591  
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Originally Posted by the Wasp
yes, but I would have to send it to you first, I have to order 3 servos and a bunch of stuff so I will also order a new barrel, no biggy,

I swapped the retaining screw with the one from the 82, it's smoother now but not a lot

Jim
Send it to me with the reciept and I'll get you a whole new carb if you want.

Last edited by Glowgeek; 05-17-2019 at 06:29 PM.
Old 05-17-2019, 07:04 PM
  #40592  
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OK I will think about it a day or 2,

I sure don't know why the barrel locks up when I tighten it down

Jim
Old 05-17-2019, 10:14 PM
  #40593  
the Wasp
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a .60 size Corsair with a Saito 125, boy she goes

I think I have posted this one before

Jim
Old 05-18-2019, 02:36 AM
  #40594  
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jim here's a pic of a crash damaged fa82 carb,note the self tapper screws to suit a plastic back plate,no way you could bend a carby over tightening them.Excuse the cat hair on the old carby

Originally Posted by the Wasp
errrrrrrrrrrrrrrrrrrrrrrrrrrrr,
guys, so what's going on here,

when I tighten down the Carb to the back plate on my 100 the Barrel wont turn, how can I get a warp in the Carb, it so thick,

has any one seen this before ???

Jim
Jim i'm with dave i think will post a few pics of a new fa82 and some comments
Old 05-18-2019, 02:41 AM
  #40595  
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Now if you've tried to over tighten these one's at worst you'll strip a thread or skin your knuckles when the allen key slips out of the caphead.

Now here's a pic of a brand new saito fa82 with all ally backplate
Old 05-18-2019, 02:50 AM
  #40596  
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That little black bolt head in the pic muchachos

This finely made little black bolt head in this pic is interesting.It sits in a finely made spiral groove in the throttle barrel,if you tighten it up like a prop nut it WILL stop the throttle barrel rotating,same as if you lose the little washer that sits under that bolt/guide.Do it up gently,worst thing that can happen in the unlikely event that it comes out is...you won't have a steady idle
Old 05-18-2019, 03:34 AM
  #40597  
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Originally Posted by Rudolph Hart
Do it up gently,worst thing that can happen in the unlikely event that it comes out is...you won't have a steady idle
If the throttle barrel guide screw loosens too far or comes out completely you'll have worse problems than that; you'll have no throttle control at all! Just say'n.
Old 05-18-2019, 04:13 AM
  #40598  
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Jim, check your back plate and carb body surfaces carefully to ensure they are flat and have no burrs. One tiny piece of machining swarf could cause the carb body to twist/distort when tightened. Sounds like the clearance between the barrel and the carb bore is very tight on that sample, maybe too tight.
Old 05-18-2019, 05:45 AM
  #40599  
Jesse Open
 
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What Glowgeek said.
If both surfaces are flat, clean and true it would be very hard to distort that bore by pulling up the screws.
There are some thin sections and very precise fits involved so everything else needs to fit well.


Reminds me, I need to order four more aluminum backplates. Still have a few 72 and 82 to upgrade.

Glow, the 60 twin arrived yesterday but I got home a bit late. Will open the box later today.

Last edited by Jesse Open; 05-18-2019 at 05:50 AM.
Old 05-18-2019, 07:35 PM
  #40600  
the Wasp
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hey guys, about my Carb dram LOL. even just a little pressure from the screw and the barrel get's harder to turn, and I also tested it by removing the manifold and the same results.. then I mounted the 100"s Carb to the 82's plastic back plate, and the same thing but not as bad.

so, with the 100's metal back plate I can not tight the Carb enough to hold it secure so I guess I have to send the Carb back, if I can find the receipt

Jim

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