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Old 08-15-2020, 05:07 PM
  #47301  
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Originally Posted by Outrider6 View Post
Returning to glow-powered kits that I build, after a long hiatus, I bought a Saito 40 a couple of months ago for my SIG Cub. Earlier this week, I got a Saito 62 for the Somethin' Extra that I am currently building, and I will be breaking it in either tomorrow or Monday, after my prop reamer arrives. The only thing that currently bugs me about Saitos is that some prop shafts are US (the 40 - 1/4-28), and some are metric (the 62 - 7mm, I believe). I would think they would all be the same units.

Many years ago, I had a Saito 100 and 72.

I am extremely partial to 4-strokes, and doubt I will be buying any 2-strokes for future models that I build. I'm the same way with motorcycle engines.

what,,, wait,,, is your name Gary ? LOL

http://www.mecoa.com/index1.htm

Jim
Old 08-15-2020, 05:13 PM
  #47302  
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Originally Posted by Monty Python View Post
Mike! stop stealing my jokes but seriously, it is always a shame to see a nice model lost through pee poor piloting skills. it would have sounded far better with an fa125 in it

ps i hope the builder and or pilot remembered the old trick of stashing a huge garbage bag behind the cockpit in the fuse, it makes it easier to carry the electric motor and house brick size battery packs back to the pits. If it had a 125 in it you could just leave it there.
LOL

Jim Bob
Old 08-15-2020, 05:23 PM
  #47303  
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Originally Posted by FlyerInOKC View Post
I have a .40 size Goldberg Tiger II airframe to be covered in orange and white covering With Hobbs crouching to pounce on each side. I wonder how it would look powered by an orange Saito?

no-p, orange plane x black engine should be it

Jim
Old 08-15-2020, 05:35 PM
  #47304  
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Originally Posted by Hobbsy View Post
What is inside the black coating is well worth 265 bucks. I don't think Saitos are coated with powder coat, I had a Black Lincoln .61 that was powder coated, you could nearly rub it off with your finger.
What's inside a GK that's not inside a Silver Saito? Nothing, so why pay more?

Maybe the lincoln wasn't powder coated or perhaps poorly prepped or didn't didn't get cured at the correct temperature. Who knows, but powder coating is one of the toughest finishes out there if done right. Not something you're going to rub off with your finger anyway.
Old 08-15-2020, 05:57 PM
  #47305  
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Default FG-20 Converted to Methanol

Lonnie,

I think you commented some time ago about never having seen a 125 CDI on methanol fuel
This is a very old FG-20 that I converted back to methanol.
Has an RCexl ignition and an FA-125 carb.
Also has factory silencer fitted with a custom oversized tail
Old 08-15-2020, 06:01 PM
  #47306  
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Nice, I'll be running my 180 on cdi sometime soon. I have seen that vid before, just forgot.
Old 08-15-2020, 06:10 PM
  #47307  
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Ok ok
Saito 56 or bigger with orange cylinder and case and black push rod tubes and black valve covers.
I will see what I can do.
Old 08-15-2020, 07:54 PM
  #47308  
Outrider6
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Originally Posted by Monty Python View Post
Welcome outrider6 now don't get all giddy and rush out and buy an fa125 ya hear? you've already picked a gem in the fa62.
I ran four 8 oz tanks through the 62 today, before it rained, and it is now fairly broken in. I imagine (and hope) the top rpm's increase a good bit as it gets more broken in, as I was only seeing just under 10k with a 13x6 APC. The instructions state 11,500 peak on a 13x6. I wasn't trying to lean it out for the max yet, but near the end of the 4th tank, with over 40 minutes run time, I wanted to get it near the peak, then richen it up until it dropped about 300 rpm (following the instructions). At about that 10k, going any leaner, it started dropping revs, so I immediately richened it, before shutting it down, as the rain started.

I was a little disappointed to not get more revs out of it with that much time on it, and I hope it gets better. But it sure did start easily and idle pretty low already. I'm building my SSE fairly light, so I am really hoping it has enough power for unlimited vertical and a little hovering.
Old 08-15-2020, 11:21 PM
  #47309  
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Originally Posted by Glowgeek View Post
"Your mother was a hamster and your father smells of elderberries!". "Now go away, or I shall fart in your general direction!"

A used FA125GK just sold on rcg for $265. It amazes me what people will pay for black powder coat!
Lonnie both my parents lived their whole lives together in the same tree nibbling gum leaves...i left home as a teenager, how much can a koala bear?

ps gary good to hear from you

Old 08-15-2020, 11:38 PM
  #47310  
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Originally Posted by Outrider6 View Post
I ran four 8 oz tanks through the 62 today, before it rained, and it is now fairly broken in. I imagine (and hope) the top rpm's increase a good bit as it gets more broken in, as I was only seeing just under 10k with a 13x6 APC. The instructions state 11,500 peak on a 13x6. I wasn't trying to lean it out for the max yet, but near the end of the 4th tank, with over 40 minutes run time, I wanted to get it near the peak, then richen it up until it dropped about 300 rpm (following the instructions). At about that 10k, going any leaner, it started dropping revs, so I immediately richened it, before shutting it down, as the rain started.

I was a little disappointed to not get more revs out of it with that much time on it, and I hope it gets better. But it sure did start easily and idle pretty low already. I'm building my SSE fairly light, so I am really hoping it has enough power for unlimited vertical and a little hovering.
Your new fa62 may need a little more time i'm assuming it's still on the bench. I've never flown a sse 51"? but your fa62 should do what you want in a 4 to five pound airframe. As a guide my first seagull 67" decathlon weighed nearly eight pounds and the fa62 flew it at better than scale performance. As i wanted unlimited vertical all the decathlons after that one were powered by fa82's, no lead in the tail although the battery pack was back there. Once you've test flown the sse and you are happy with the flying tune, as opposed to bench running tune, you might want to try an apc 12x7 sport prop and see what you think.
Old 08-16-2020, 01:38 AM
  #47311  
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Originally Posted by Outrider6 View Post
I ran four 8 oz tanks through the 62 today, before it rained, and it is now fairly broken in. I imagine (and hope) the top rpm's increase a good bit as it gets more broken in, as I was only seeing just under 10k with a 13x6 APC. The instructions state 11,500 peak on a 13x6. I wasn't trying to lean it out for the max yet, but near the end of the 4th tank, with over 40 minutes run time, I wanted to get it near the peak, then richen it up until it dropped about 300 rpm (following the instructions). At about that 10k, going any leaner, it started dropping revs, so I immediately richened it, before shutting it down, as the rain started.

I was a little disappointed to not get more revs out of it with that much time on it, and I hope it gets better. But it sure did start easily and idle pretty low already. I'm building my SSE fairly light, so I am really hoping it has enough power for unlimited vertical and a little hovering.
Welcome Outrider6, congrats on your successful fa62 break in. Yes, the manual states the maximum practical rpm is 11,500 and the max recommended prop is a 13x6 but it does not state that the engine will turn a 13x6 at 11,500.

You didn't state what fuel you're using but anything over 9700 peak rpm with an apc 13x6 is excellent power output. The Horizon Hobby benchmark is "APC 13x6 @ 9900" however that kind of performance would likely require 25% or higher nitro content in your fuel.

Now that your break in procedure is complete it's time to check and readjust the valve lash. Using a .002" feeler gauge is best to use for that purpose. The religious use of after run oil or Dextron ll ATF after each day's flying session is a good idea, It minimizes rust formation on the internal parts. Injecting approx 3cc into the engine through the crankcase vent line and tilting the engine in different directions to distribute the oil works best.

My two 62's would turn an apc 13x6 at 9600 peak on 15% fuel. Richened 300 rpm for flight (9300) produces right at 7 lbs of thrust, plenty for unlimited vertical on a 5lb plane such as an SSE. My SSE built to just over 5 lbs and flew good with that engine/prop combo. A 12x7 prop on this engine is great for flying 40 size warbirds at scale speeds.

Lonnie

Last edited by Glowgeek; 08-16-2020 at 02:29 AM.
Old 08-16-2020, 02:42 AM
  #47312  
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Key Features

  • 0.62 cubic inches of power in a 0.56-size case
  • Integrated head transfers heat more easily and evenly
  • Turns an APC 13 x 6 prop at 9900 rpm
  • Installs easily in all .40–.72 models
  • Unique champagne color drive washer
  • True chrome AAC cylinder lining
  • 1-piece cylinder head allows engine to run cooler
  • Backed by a full 3-year warranty
At 40 to 50 minutes run time, it's not going to loosen up much more.

My numbers for a Saito 62-b: MA 12x6 3 blade 10% full syn. fuel max rpm 10,150, idle 1,850 Glo-Devil, 4c plug.

Last edited by Hobbsy; 08-16-2020 at 02:49 AM. Reason: Add content
Old 08-16-2020, 02:56 AM
  #47313  
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When I sold my early 125 so I could buy the 125-a I paid $349.00, there was a $30.00 rebate from $379.00, $265 ain't bad for a GK.
Old 08-16-2020, 03:00 AM
  #47314  
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Dave, will the velocity stack from a 150 or 180 fit a 120 fathead carb?
Old 08-16-2020, 03:55 AM
  #47315  
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I think so, you'll need one of those aluminum ring inserts, of which I have a couple.


Old 08-16-2020, 04:01 AM
  #47316  
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Ok thanks. I think I have a ring left over from a 150/180 carb kit, if that's what's in the kit. If you don't have a spare 120/150/180 velocity stack laying around I'll order one
Old 08-16-2020, 04:09 AM
  #47317  
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I have several, I'll post a picture in a while. I bought a goodie box from Gary a while back.
Old 08-16-2020, 04:16 AM
  #47318  
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Have you played with that midrange adjustment on the fathead? I think it's just a convenient way to rotate the cat eye on the spray bar but it is a cool feature.
Old 08-16-2020, 04:21 AM
  #47319  
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I didn't keep the Fat Head long, it seems to be very collectible. You're exactly right though.
Old 08-16-2020, 04:35 AM
  #47320  
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Yes, very collectable to the right person, some are in love with them it seems. They have an excellent reputation for having the grunt to spin larger props than the 120S (except maybe the high cr early version). I'm not sure why as they have the same cam, bore and stroke. Not sure on the carb bore differences. They are said to run smoother as well, no doubt due to the additional weight from using larger castings.

Anyway, it should be a fun project to refresh the ol' girl.


Edited to remove misinformation.

Last edited by Glowgeek; 08-16-2020 at 04:58 AM.
Old 08-16-2020, 05:32 AM
  #47321  
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As I recall not the same cam, the lifters as well are totally different. No mushroom. The Fathead will idle far, far lower than any other Saito I have seen. Lots of fin, very tame compression. Not an engine for those looking for a virtual two stroke on peak RPM. For those who fly the wing, the Fathead is precious.

Old 08-16-2020, 05:34 AM
  #47322  
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BTW, The carb is marvelous. Probably cost at least twice as much to make over the late style carbs.
Old 08-16-2020, 05:36 AM
  #47323  
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Here are a few off the carb inserts

Various inserts

O-ring around insert

Look Ma, no light.
Old 08-16-2020, 05:40 AM
  #47324  
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Dave, I saw that thick aluminum spacer in a carb kit, assumed it was for use when the choke has been removed. Is that right?

Last edited by Glowgeek; 08-16-2020 at 05:45 AM.
Old 08-16-2020, 05:41 AM
  #47325  
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Lastly, three different spray bars with three different sized cat eyes.


A sad day for some engine if a too small cat eye got installed by mistake.

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