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Old 07-24-2020, 03:34 PM
  #47001  
Hobbsy
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Thanks Mike.
Old 07-24-2020, 03:48 PM
  #47002  
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I am toying with the idea of building a foam core board plane of the high wing flat bottom style. Can anyone suggest some dimensions for a 50 four stroke. Be generous in considering the 50's power.
Old 07-24-2020, 08:04 PM
  #47003  
FlyerInOKC
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How about an Ugly Stik? It would be easy enough to cut the foam out to match the balsa parts.
Old 07-25-2020, 02:54 AM
  #47004  
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Thanks, that I did not consider, no weird shapes there.
Old 07-25-2020, 03:18 AM
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Dave, you didn't say, but are you having to run your fa150 3+ turns out on the hsn?

Another thing, even though I replaced the tiny hsn oring the hsn is still a bit wobbly. Do high time engines sometimes require hsn replacement due to thread wear? Or maybe the threads wear out on the fuel inlet? Just too wobbly imo.
Old 07-25-2020, 03:24 AM
  #47006  
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I'll have to check that for you, I would replace both the HS needle and the fuel inlet. Solid extensions are really hard on the HS needle threads. Sorry, I'm not a turn counter, I just set em and forget em. I'll be back.
Old 07-25-2020, 03:33 AM
  #47007  
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I'm not a turn counter either Dave. I start 3 turns out on the hsn for all my overhauls and that's always been too rich. Just surprised I had to open it further to keep from pitching props.

Thanks on the threading issues. I have a new hsn I can try to see if that helps. Looks like I'll be buying the whole inlet/spraybar kit for this high time engine.

What's the story with the rtv on that pic you posted earlier? Are the big blocks notorious for vacuum leaks at the carb/manifold junction?
Old 07-25-2020, 03:41 AM
  #47008  
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That carb pictured is from a Saito 2.20 I had for a while, Adrain at CHI now owns it, at one time I went through a faze and sealed everything, big waste so I quit doing it. I never had a leak like that anyway.

You be pretty sure that if 3 turns don't do it, something else is wrong. The smaller ones 2 turns is magic.
Old 07-25-2020, 03:49 AM
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Thanks. I'm not a turn counter per se but I am a leak chaser when things aren't acting right. For cowled engines I count the hsn turns so I can get it close when R&R-ing cowls. My 180 hsn is 1-3/4 out, about average for most 4 strokes. The 150 at 3-1/2 turns out seems excessive.
Old 07-25-2020, 04:11 AM
  #47010  
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This is a 2.20 carb, the tiny O-ring is not so tiny, I never had to change it. PS, the RTV was because of the choke slot.


Last edited by Hobbsy; 07-25-2020 at 04:14 AM.
Old 07-25-2020, 05:57 AM
  #47011  
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Dave I sent a PM.
thanks. Mike,
(Captain Crunch)
Old 07-25-2020, 10:40 AM
  #47012  
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Received, and many thanks.
Old 07-26-2020, 03:08 AM
  #47013  
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I did not get to run the 150 yesterday, hopefully I can get to that today. I set up it sans the CHI, it wears a later cast muffler.
Old 07-26-2020, 07:29 AM
  #47014  
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Do you ever actually fly the planes, or just play with the engines?
Old 07-26-2020, 08:41 AM
  #47015  
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Originally Posted by acdii View Post
Do you ever actually fly the planes, or just play with the engines?
Does it matter? "D
Old 07-26-2020, 09:23 AM
  #47016  
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Originally Posted by acdii View Post
Do you ever actually fly the planes, or just play with the engines?
I'm about 50/50. It seems to come in waves but I never pass up a windstill Sunday afternoon.


Last edited by Glowgeek; 07-26-2020 at 09:26 AM.
Old 07-26-2020, 11:22 AM
  #47017  
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Originally Posted by acdii View Post
Do you ever actually fly the planes, or just play with the engines?
Yes I do, I moved here two years ago, so far only once this year, an LT 25 is tiny here, the front/right field is 750' the rear is 500'. It doesn't matter where the sun is.


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Old 07-26-2020, 12:30 PM
  #47018  
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Originally Posted by Hobbsy View Post
Yes I do, I moved here two years ago, so far only once this year, an LT 25 is tiny here, the front/right field is 750' the rear is 500'. It doesn't matter where the sun is.


Wow, nice place to fly, lots of fliers too.
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Old 07-26-2020, 02:08 PM
  #47019  
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Originally Posted by acdii View Post
Do you ever actually fly the planes, or just play with the engines?
Both! https//youtu.be/Xh4usmVzGzw

New acquisition.
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Old 07-26-2020, 04:49 PM
  #47020  
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Sweeeet
Old 07-26-2020, 08:00 PM
  #47021  
the Wasp
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guys, a reminder here, of, how cool the Saito 100iT sounded

Jim
https://youtu.be/v0HSc6TqbYo

https://youtu.be/CIgkdc608N4

Last edited by the Wasp; 07-26-2020 at 08:08 PM.
Old 07-27-2020, 02:01 AM
  #47022  
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Sweeeet
Old 07-27-2020, 02:37 AM
  #47023  
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The field is near Thornburg, Va. 41.1 miles from my house, with a nice Club House and shelter with electric power.




Last edited by Hobbsy; 07-27-2020 at 02:40 AM. Reason: Add picture
Old 07-27-2020, 02:48 AM
  #47024  
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Sweeeet
Old 07-27-2020, 03:18 AM
  #47025  
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Default FA150 down on power.

Completely disassembled the 150 carb and found a tiny clear substance stuck at the spraybar slit and some minute debris in the inlet. Cleaned that up, ran it again and retuned. The lsn and hsn needed 1/2 turn in but power is still down 1/2 hp and it still won't idle below 2200. It's spinning a 15x8 at 8900 peak, should be spinning at 16x8 at that rpm.

Rechecked cam timing, rockers were dead even at tdc on the exhaust stroke. Tore down the engine and found the front bearing seal had popped out of the bearing but nothing else looks off. Bearings are new and smooth, compression is excellent, leakdown is excellent, no intake tract leaks detected, new ring, new valve springs, new fuel, new glow plug. Hmmmm


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