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Old 03-20-2022, 02:53 PM
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Nice Pete, did you tach peak rpm on that 80? Should be up some from the stock exhaust.

Love the test stand and the flight wagon!
Old 03-20-2022, 03:32 PM
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Pete,
The muffler appears to be a TH12x1A TurboHeader for the Saito 100 and others. The Saito 80 uses the TH12x1B that has a ring machined in the neck to tell them apart. It will probably work okay but you will not get your best performance if it is the A model. Thanks for picking up one of our TurboHeaders. Send me a message if you have questions. You found a great bargain.
Old 03-20-2022, 04:27 PM
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Lonnie
I did not tach the engine. The winds out we gusting to 40 mph. Thanks on the test stand and the field cart. The test stand was built from scrap lumber I had around and coated with spar urethane. The spar urethane is fuel proof after sitting a couple of days in the hot Texas summer sun. My field box on wheels has one special feature. It has a 20-watt amp and speakers that I plug my MP3 player into. I can listen to music while I fly. Nothing like listening to the Beach Boys or Buddy Holly music while you are flying. Did I show my age with that one?

Jim
I picked up two of those mufflers at the swap meet. My plan was to use the other one on a Saito 65. They are sure a piece of art. Do you not recommend using them on the 80 and 65?




Old 03-20-2022, 05:04 PM
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Originally Posted by RC Specialties
Pete,
The muffler appears to be a TH12x1A TurboHeader for the Saito 100 and others. The Saito 80 uses the TH12x1B that has a ring machined in the neck to tell them apart. It will probably work okay but you will not get your best performance if it is the A model. Thanks for picking up one of our TurboHeaders. Send me a message if you have questions. You found a great bargain.
Do you have a pic of the B version? The pic on your site for the A and B versions appear to be the same photo.

Old 03-21-2022, 11:20 AM
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what the????
well I started typing another post, was going to tell you that the guy that sold me this GK100 said he ran it really rich, so I was going to show the valves and how black they are. but I found something odd to me. both valves in my Silver FA100 are the same size. but this GK100 has 2 different size valves. the E-valve is the same size of a 91valave, and the intake is a 100 valve. just looking at the valve ports you can see the Exhaust side has a smaller valve port ID. LOL did someone make a BooBoo. any one here seen this before??
BTW, my manual show me both the Silver 100 and GK100 have the same valve part number. oop, too add, I have a set of 100 valves I bough from Horizon and they too are each the same size.

see how black the valves are, and you can see one is larger.

Jim




Old 03-21-2022, 11:55 AM
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The valves should be .428" exhaust and .468" intake. The .91 is .428" for both.

http://sceptreflight.com/Model%20Eng...%20FA-100.html

Last edited by 1200SportsterRider; 03-22-2022 at 02:52 AM. Reason: Make correction
Old 03-21-2022, 12:48 PM
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With a lot of flying, my fuel with Klotz Super Techniplate (20% castor) will make the exhaust valve black with a lot of carbon build up. If you put the valve stem in a drill press chuck at low speed and spin it, Scotchbrite will clean them very nice.
Old 03-21-2022, 01:14 PM
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Originally Posted by 1200SportsterRider
The valves should be .428" exhaust and .468" exhaust. The .91 is .428" for both.

Saito FA-100
then that means the package I bought from Horizon had 2 Intake valves in it.

thanks Dave, that helps!

Jim
Old 03-21-2022, 06:28 PM
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Originally Posted by modeltronics
With a lot of flying, my fuel with Klotz Super Techniplate (20% castor) will make the exhaust valve black with a lot of carbon build up. If you put the valve stem in a drill press chuck at low speed and spin it, Scotchbrite will clean them very nice.
I need to buy some Scotchbrite, but I never remember to buy it.valve grinding compound will clean them too but it's more of a dirty job.

Jim
Old 03-21-2022, 06:58 PM
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000 Steel wool if you are careful.

Use it wet and some Comet Cleanser.

Last edited by Jesse Open; 03-21-2022 at 07:11 PM.
Old 03-21-2022, 07:07 PM
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Originally Posted by the Wasp
I need to buy some Scotchbrite, but I never remember to buy it.valve grinding compound will clean them too but it's more of a dirty job.

Jim
Never tried grinding valves in Saito engines. Didn't you say compounds are too coarse Gary? Seems I remember tooth paste....
Old 03-22-2022, 02:54 AM
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Sorry for mistype Jim, I see that you caught it, I fixed it. It looks like this is what you got.


Last edited by 1200SportsterRider; 03-22-2022 at 03:38 AM.
Old 03-22-2022, 04:16 AM
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Originally Posted by Hyjinx
Never tried grinding valves in Saito engines. Didn't you say compounds are too coarse Gary? Seems I remember tooth paste....

The steel wool and Comet are for cleaning the valve, not actually seating it. And then, carefully when cleaning the actual valve face.



Dave, you had me scratching my head!
Never saw an engine with an exhaust valve larger than the intake. An easy slip up though.


Last edited by Jesse Open; 03-22-2022 at 04:18 AM.
Old 03-22-2022, 09:55 AM
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Originally Posted by Jesse Open
The steel wool and Comet are for cleaning the valve, not actually seating it. And then, carefully when cleaning the actual valve face.



Dave, you had me scratching my head!
Never saw an engine with an exhaust valve larger than the intake. An easy slip up though.
Yep. That's what I was thinking to Gary. Forgot the pencil eraser face clean up. Slightly off topic, but how are you transporting that cheap methanol. I am heading down to Alabama to pick up a plane. Thinking bout filling a twenty gallon steel drum on the return route.
The Gypsy Queen is riding with me in the mom mobile on this cannonball run. If i put a big can of fire hazard in there she would probably hit me with the iron skillet she keeps around in case I really cheez her off....
Could put a rack on the hitch but that would guarantee getting rear ended by a distracted driver LOL.
Ok Guys. The grilling may start now😉
Old 03-22-2022, 10:10 AM
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Using the 5 gallon, steel VP M-1 empties. Pretty stout cans and already properly labled.
I buffer in between the cans with styrofoam and secure well.

And yes, a sharp eye in the rear view when stopping. Something all surviving motorcyclists learn about That keen eye as well as keeping a viable escape path ahead, even when it means stopping a car length behind the car ahead. I know you know what I mean.

That gaspoline in the tank is even easier to light!

Old 03-22-2022, 10:29 AM
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With the Gipsy Queen riding along I think you're just hosed!
Old 03-22-2022, 12:13 PM
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Could leave the Queen at her throne.
The Norwegian Princess would certainly allow me a leave along with the Royal Coach. She is very well atuned to the methanol aquisition runs.
Considered a tax-exempt, environmental mission. After all, not a fossil fuel.
Plus, flying keeps me away from the Castle at times for many days in a row.

Then again, we could make a separate side trip sometime.


How huge is your new plane?
Old 03-22-2022, 05:56 PM
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Originally Posted by Hyjinx
Never tried grinding valves in Saito engines. Didn't you say compounds are too coarse Gary? Seems I remember tooth paste....
sorry, I should not have used the word "grinding" there^^^! .I have some Clover brand Seating & Honing compound and it says right on the container it can be used to remove carbon,.

when I took the FA91 apart I used Versa Chem Metal Compound on the valves to clean them and it worked very well without hurting or scratching them. I used Versa Chem Metal Compound on the valves because I had more of it than the Clover.

as for Seating Saito valves I have read here on RCU somewhere that people have used gritty toothpaste, but I sure don't know how good it works????

sorry for the edits, its rather dark here and hard to see the unlet keyboard!
Jim

Last edited by the Wasp; 03-22-2022 at 06:02 PM.
Old 03-22-2022, 06:30 PM
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Originally Posted by Hyjinx
Never tried grinding valves in Saito engines. Didn't you say compounds are too coarse Gary? Seems I remember tooth paste....
I can say what I know, when I tried to seat the 100 valve in the 91 head the Valve Seating compound really eat into the Aluminum head fast. rather Fine or Course with a hard valve the compound eats Aluminum fast!!

Jim
Old 03-22-2022, 06:45 PM
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Originally Posted by Hyjinx
Yep. That's what I was thinking to Gary. Forgot the pencil eraser face clean up. Slightly off topic, but how are you transporting that cheap methanol. I am heading down to Alabama to pick up a plane. Thinking bout filling a twenty gallon steel drum on the return route.
The Gypsy Queen is riding with me in the mom mobile on this cannonball run. If i put a big can of fire hazard in there she would probably hit me with the iron skillet she keeps around in case I really cheez her off....
Could put a rack on the hitch but that would guarantee getting rear ended by a distracted driver LOL.
Ok Guys. The grilling may start now😉
be careful! some states only allow you to transport a given amount..

Jim
Old 03-22-2022, 07:35 PM
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Originally Posted by the Wasp
be careful! some states only allow you to transport a given amount..

Jim
Yes, that is true.

Rules vary by state, some by weight, some by volume. Most allow for 4 approved cans of five gallons. That is what I have been using as a guideline from PA thru OH and into MI.



Last edited by Jesse Open; 03-22-2022 at 07:49 PM.
Old 03-23-2022, 11:16 AM
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Originally Posted by Jesse Open
Yes, that is true.

Rules vary by state, some by weight, some by volume. Most allow for 4 approved cans of five gallons. That is what I have been using as a guideline from PA thru OH and into MI.
yeah, I remember way back on the RR Heli forum some guy was saying he got stopped by the PoPo LOL, and he had so much glow fuel he had to call 2 friends to come and take some home for him. it took a while for his friends to show up.

Jim
Old 03-23-2022, 12:55 PM
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it ant your Daddy's race.

Old 03-24-2022, 08:28 AM
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As some of you may know I have a scratch built Ryan SC-W build going on over at RCG. I have been thinking about servo locations and was wondering if a micro servo mounted to the back of the firewall be sufficient for a Saito .82 or .91? Anyone here have an experience mounting a servo to the back of the firewall?
Old 03-24-2022, 08:57 AM
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Got a real nice Saito 45 Special here, looks like new.
Also a disassembled FA-56

They need a free ride to a new home. Shoot me a PM

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