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Saito FA-120 ABC with Brass Tube muffler

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Saito FA-120 ABC with Brass Tube muffler

Old 03-23-2017, 02:44 PM
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Broken Wings
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Default Saito FA-120 ABC with Brass Tube muffler

I bought this engine and would like some information. Apparently from reading Bills Saito notes that it's an early ABC type with a liner. It's got a brass tube muffler and the exhaust exits from the rear. It has the letter "B" stamped on the right hand lug.

Any guess as to what year this version came out? I assume that it's one of the low cam low compression models.

A link to a manual for this engine would be greatly appreciated. It's never been mounted/fueled. There's a small glass bowl fuel filter that came with it. Is this a firewall mount or can you attach it to one of the screws on the engine?

I wish Bill was still with us. He really knew his stuff.
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Old 03-25-2017, 07:52 AM
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Hey Broken Wings, nice little engine. I think only one twin had a liner. I can look at an old brochure if I can find it. I'm about 100% sure Saito only put out one engine with a liner and one engine with nickel plating. Both were twins or radials.
Old 03-25-2017, 12:16 PM
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I read this: http://www.rcuniverse.com/forum/glow...ml#post3582901

And figured it had a liner if it was the Large Fins over the cam box.
Old 03-25-2017, 05:36 PM
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I don't know crap about Saito, but it's good to see you around again BW.. thought about sending a PM to see how you're doing these days...
Old 03-25-2017, 05:50 PM
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That engine is known in some circles as the Fat Head 120, w8ye could enlighten us some on that I think.
Old 03-26-2017, 03:24 AM
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Originally Posted by 1QwkSport2.5r View Post
I don't know crap about Saito, but it's good to see you around again BW.. thought about sending a PM to see how you're doing these days...

I'm good. I've been working a lot.
Old 03-26-2017, 03:27 AM
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AAC or ABC......?

I'd rather not take it apart to find out....

Last edited by Broken Wings; 03-26-2017 at 03:30 AM.
Old 03-26-2017, 04:07 AM
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http://sceptreflight.com/Model%20Eng...%20FA-120.html

The 1.20 that Clarence Lee tested here is similar to yours but has a different intake pipe mount, same carb and same exhaust pipe but he says its AAC. It must be a tweener model. You can see the step blow the cylinder, (in the crank case) that was done on certain models to keep the brass sleeve from sliding downward.
Old 03-26-2017, 05:11 AM
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Originally Posted by Hobbsy View Post
http://sceptreflight.com/Model%20Eng...%20FA-120.html

The 1.20 that Clarence Lee tested here is similar to yours but has a different intake pipe mount, same carb and same exhaust pipe but he says its AAC. It must be a tweener model. You can see the step blow the cylinder, (in the crank case) that was done on certain models to keep the brass sleeve from sliding downward.

I think I'll go with William Robison......ABC with bronze valve guides/seats.

In the article, Clarence mentions a carburetor venturi throat restrictor for use with larger propellers. Does anybody have one?
Old 03-26-2017, 05:18 AM
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I think I'll go with William Robison......ABC with bronze valve guides/seats.

I think you'd be right. It seems to be a rare or just not well known.
Old 03-26-2017, 05:39 AM
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Originally Posted by Hobbsy View Post
I think I'll go with William Robison......ABC with bronze valve guides/seats.

I think you'd be right. It seems to be a rare or just not well known.

My reasoning is how it was manufactured. I think Bill may have looked at it a little closer. If it was AAC, I would think that it would be a pain to install the guides/seats after plating. He was a motorcycle guy and those guys are rarely ever wrong.....
Old 03-26-2017, 05:43 AM
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Yes he was, a Vincent nut, he was also a sports car nut and drove a Grand Mercedes 600 that got about 8 mpg and maybe 11 on a good day.. If he got hold of one he definitely would have looked. He borrowed my little Saito .30 for that very thing and sent it back with a black cylinder, he powder coated it for a little joke. It's very special now. Woops, wrong picture, can't find the correct one.
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