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Old Apr 23, 2011, 08:36 PM
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Jimmy Hoffa's Avatar
Orlando, FL
Joined Jul 2004
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Quote:
Originally Posted by raceskier View Post

"Show me the test results".
Are you from Missouri?

I have never owned or operated a motor with a TH Muffler but there have been many results posted for years. Unless it is a massive conspiracy, it is typical to get a 300rpm increase over the stock muffler.

If you need maximum power I suggest using 30% nitro and/or a crack pipe.
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Old Apr 25, 2011, 06:40 AM
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u2builder's Avatar
USA, NH, Alstead
Joined Oct 2007
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I have three used Saitos, new to me, on three planes built this winter. What would be a good starting point for the high speed needle. I'll be using Omega 15% nitro fuel, at an altitude of about 500 feet if that matters. The engines are an 82a, 100 and 125. Thanks.

Also, does anyone know where to get a connecting rod for a Saito 72. They seem to have been out of stock since last summer.
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Old Apr 25, 2011, 06:49 AM
Perfect 3pt inverted landing!
teookie's Avatar
USA, AL, Huntsville
Joined Oct 2008
3,089 Posts
for the 100, the stock position on the high speed needle is something ridiculous like 5 turns out. At this setting, you can actually watch the fuel level in your tank drop! The good thing is that with the glow driver still attached, saito's will run even at these crazy rich settings. So, for all your engines, I wouldn't hesitate starting at 4 turns out and tuning from there.
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Old Apr 25, 2011, 08:01 AM
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I TOBOR's Avatar
Joined Feb 2007
2,705 Posts
I personally never got a 300 rpm increase, the range would be from 210 to 260 rpm, the 1.25 would be the exception, the TurboHeader does nothing for the 1.25 except make it sound better and eliminate the huge stock muffler. In the case of the Saito 2.20 the TH weighs 1.8 oz and the stock muffler weighs 3.6 oz with a gain of about 240 rpm.
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Old Apr 25, 2011, 04:37 PM
Cognito, Ergo Imbibo
old_dan's Avatar
Morgan Hill, CA
Joined Sep 2007
310 Posts
Is there some reason that you don't mount the engine straight up on the Four-Star & let the stock exhaust point back just over the wing?

I always find that it's easier to hook up the glow driver when the cylinder is up.

Dan
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Old Apr 25, 2011, 06:26 PM
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United States, OR, Klamath Falls
Joined Aug 2005
1,929 Posts
Quote:
Originally Posted by u2builder View Post
I have three used Saitos, new to me, on three planes built this winter. What would be a good starting point for the high speed needle. I'll be using Omega 15% nitro fuel, at an altitude of about 500 feet if that matters. The engines are an 82a, 100 and 125. Thanks.

Also, does anyone know where to get a connecting rod for a Saito 72. They seem to have been out of stock since last summer.

http://www.advantagehobby.com/produc...roductid=26743
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Old Apr 25, 2011, 06:53 PM
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United States, FL, Palm Harbor
Joined Feb 2007
652 Posts
glad to see this thread here.I got tired of rcu.I sold all my 2 strokes but love my satios ...I fly my dynaflite PT-19 on a satio 180.and my 1/4 scale spacewalker on a satio 150.
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Old Apr 25, 2011, 07:42 PM
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Jimmy Hoffa's Avatar
Orlando, FL
Joined Jul 2004
2,344 Posts
Quote:
Originally Posted by u2builder View Post
What would be a good starting point for the high speed needle.
If you are talking about break-in, about 5 turns out. As Teookie mentioned, it won't run without a glow driver attached at that setting. After break-in is complete, who knows? Every setup is different. Tach it and richen to drop peak rpm by about 300.

Do you know the break-in procedure?

http://www.rcgroups.com/forums/showthread.php?t=796034
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Last edited by Jimmy Hoffa; Apr 26, 2011 at 05:53 AM. Reason: added link
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Old Apr 27, 2011, 10:11 PM
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United States, WA, Port Townsend
Joined Mar 2005
130 Posts
Quote:
Originally Posted by old_dan View Post
Is there some reason that you don't mount the engine straight up on the Four-Star & let the stock exhaust point back just over the wing?

I always find that it's easier to hook up the glow driver when the cylinder is up.

Dan
I'm lazy. I really like having as much oil as possible puke itself away from the plane.

And thanks to those who provided some data on the other mufflers. I'd still like to bend the stock one though.
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Old Apr 28, 2011, 05:37 AM
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Jimmy Hoffa's Avatar
Orlando, FL
Joined Jul 2004
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Quote:
Originally Posted by u2builder View Post
The engines are an 82a, 100 and 125. Thanks.
You should consider changing the rear cover on your .82 to the new style which is made of aluminum. The black plastic ones allowed vibration of the carb, which can quickly wear out the intake manifold o-ring where it enters the cylinder.

http://www.horizonhobby.com/Products...rodID=SAI82B17
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Old Apr 28, 2011, 08:53 AM
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Deltona, FL
Joined Dec 2006
587 Posts
Hey Jimmy, will this fit an older 72 as well?
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Old Apr 28, 2011, 09:49 AM
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MaverickP-51D's Avatar
United States, TX, Palestine
Joined Dec 2007
165 Posts
Hey Jimmy, I dont remeber if you told me if you've flown the 1.25 yet.
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Old Apr 28, 2011, 04:34 PM
Fly'em like you Stole'em
MikeMcChiken's Avatar
The Gehto,Ca.
Joined Jun 2008
1,109 Posts
Quote:
Originally Posted by u2builder View Post
I have three used Saitos, new to me, on three planes built this winter. What would be a good starting point for the high speed needle. I'll be using Omega 15% nitro fuel, at an altitude of about 500 feet if that matters. The engines are an 82a, 100 and 125. Thanks.

Also, does anyone know where to get a connecting rod for a Saito 72. They seem to have been out of stock since last summer.
I believe I'm around 1.5-2 turns out on my.82a . I think my 115 n 72 are about the same . So I would say 2.5 is a good start point for a already broken in motor .
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Old Apr 28, 2011, 07:25 PM
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Jimmy Hoffa's Avatar
Orlando, FL
Joined Jul 2004
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Quote:
Originally Posted by gluemaster View Post
Hey Jimmy, will this fit an older 72 as well?
It is my understanding the .72 and .82 and new .82 share the same case so it should fit fine.
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Old Apr 28, 2011, 07:28 PM
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Jimmy Hoffa's Avatar
Orlando, FL
Joined Jul 2004
2,344 Posts
Quote:
Originally Posted by MaverickP-51D View Post
Hey Jimmy, I dont remeber if you told me if you've flown the 1.25 yet.
Hi Charlie, the Mojo 60 was flown with the 1.25 that you gave me and it is great! Thanks a million!
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