Welcome to Club SAITO !
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RE: Welcome to Club SAITO !
ORIGINAL: rangerman
It doesn't have power in terms of pounds of thrust.
It doesn't have power in terms of pounds of thrust.
...Just do some HP divided by Ounces action and get a good comparison number.
Then post the info here so we can enjoy it too!
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RE: Welcome to Club SAITO !
Yep Y8YE, that's what I posted on the previous page but I didn't want to sound like Captain Obvious
I'm thinking it's around 7-7.5 lbs with their recommended prop but I may have to experiment with prop brands.
I'm thinking it's around 7-7.5 lbs with their recommended prop but I may have to experiment with prop brands.
Senior Member
RE: Welcome to Club SAITO !
Went to the field today, since the weather was nice.
Started my new (to me) 125 and was into the process of running it in and tuning.
Starts to sound funny. Or maybe it was my imagination.... But soon afterwards it seized. Woe is me!
It appears that one of the ceramic balls in the large bearing has disentergrated. It was obvious upon installing the ceramic bearings that there was more play than normal. But I'm still a noob and thought it was acceptable.
Jesus. What a mess. It appears I need a new crankcase, piston rod, piston, ring, and cylinder. New engine would be cheaper.
I might as well see if I can fix it. Certainly nothing to lose. I'll dremel down the burrs enough for the crank to rotate freely. I'll wet-sand and buff the piston skirts so the piston will fit inside the cylinder again. The grooves in the cylinder walls are here to stay. I'm sure I'll lose a percentage of the compression but maybe it'll still have enough power to fly more scale than I usually like to fly, anyways...
At least I kept the perfectly good stock bearings...
Started my new (to me) 125 and was into the process of running it in and tuning.
Starts to sound funny. Or maybe it was my imagination.... But soon afterwards it seized. Woe is me!
It appears that one of the ceramic balls in the large bearing has disentergrated. It was obvious upon installing the ceramic bearings that there was more play than normal. But I'm still a noob and thought it was acceptable.
Jesus. What a mess. It appears I need a new crankcase, piston rod, piston, ring, and cylinder. New engine would be cheaper.
I might as well see if I can fix it. Certainly nothing to lose. I'll dremel down the burrs enough for the crank to rotate freely. I'll wet-sand and buff the piston skirts so the piston will fit inside the cylinder again. The grooves in the cylinder walls are here to stay. I'm sure I'll lose a percentage of the compression but maybe it'll still have enough power to fly more scale than I usually like to fly, anyways...
At least I kept the perfectly good stock bearings...
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RE: Welcome to Club SAITO !
I got my goldberg cub out of the box tonight and started putting it together.." Worst covering job I have ever saw"..I am going to use my saito fa80...My questions are..
1 I am going to mount it inverted..Do I need any kind of stack on the carb?
2 How much of the cowl has to be removed for cooling? Looks like I can get by with just cutting the bottom since I am going to use a turbo header..DO I need to remove more to keep it cool?
1 I am going to mount it inverted..Do I need any kind of stack on the carb?
2 How much of the cowl has to be removed for cooling? Looks like I can get by with just cutting the bottom since I am going to use a turbo header..DO I need to remove more to keep it cool?
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RE: Welcome to Club SAITO !
A stack is not necessary, but will reduce the amount of fuel inside the cowl. It won't help or hinder performance based upon my limited experience.
Cooling requires 2 and possibly 3 times exit area compared to intake area. The ticket is how the airflow is directed to cylinder and cylinder head of the engine and around exhaust manifold, and to reduce ambient heat from the pipe and muffler. Usually the muffler is hanging outside the cowl, so is not much of an issue.
Cooling requires 2 and possibly 3 times exit area compared to intake area. The ticket is how the airflow is directed to cylinder and cylinder head of the engine and around exhaust manifold, and to reduce ambient heat from the pipe and muffler. Usually the muffler is hanging outside the cowl, so is not much of an issue.
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RE: Welcome to Club SAITO !
Horizontal engines run as good as vertical engines
If you invert the engine, you will need to relocate the tank to be even with the needle valve
I've knocked out a few blind nuts, filled the holes and redrilled before but it is less trouble than cooling problems
If you invert the engine, you will need to relocate the tank to be even with the needle valve
I've knocked out a few blind nuts, filled the holes and redrilled before but it is less trouble than cooling problems
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RE: Welcome to Club SAITO !
My Saito 125 valve covers have the Kevlar reinforced gaskets that are at least 1mm thick. I wouldn't exactly call them rice paper.
Now the gasket on the back plate might be getting close to rice paper?
http://www.horizonhobby.com/Products...odID=SAI125A32
http://www.horizonhobby.com/Products...rodID=SAIG2032
Now the gasket on the back plate might be getting close to rice paper?
http://www.horizonhobby.com/Products...odID=SAI125A32
http://www.horizonhobby.com/Products...rodID=SAIG2032
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RE: Welcome to Club SAITO !
ORIGINAL: jdkxtreme
Crap..lol... I figured That is what I would have to do..It sure does look good inverted though..lol
Crap..lol... I figured That is what I would have to do..It sure does look good inverted though..lol
You won't see it from the ground when the model is flying. To have an absolutely reliable engine (sidemounted) versus something that looks better, but deadsticks rather frequently is a no brainer for me.
Ed Cregger
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RE: Welcome to Club SAITO !
ORIGINAL: N2ECW
You won't see it from the ground when the model is flying. To have an absolutely reliable engine (sidemounted) versus something that looks better, but deadsticks rather frequently is a no brainer for me.
Ed Cregger
ORIGINAL: jdkxtreme
Crap..lol... I figured That is what I would have to do..It sure does look good inverted though..lol
Crap..lol... I figured That is what I would have to do..It sure does look good inverted though..lol
You won't see it from the ground when the model is flying. To have an absolutely reliable engine (sidemounted) versus something that looks better, but deadsticks rather frequently is a no brainer for me.
Ed Cregger
Senior Member
RE: Welcome to Club SAITO !
ORIGINAL: w8ye
My Saito 125 valve covers have the Kevlar reinforced gaskets that are at least 1mm thick. I wouldn't exactly call them rice paper.
Now the gasket on the back plate might be getting close to rice paper?
http://www.horizonhobby.com/Products...odID=SAI125A32
http://www.horizonhobby.com/Products...rodID=SAIG2032
My Saito 125 valve covers have the Kevlar reinforced gaskets that are at least 1mm thick. I wouldn't exactly call them rice paper.
Now the gasket on the back plate might be getting close to rice paper?
http://www.horizonhobby.com/Products...odID=SAI125A32
http://www.horizonhobby.com/Products...rodID=SAIG2032
The gasket for the FG-20 is at least 5x thicker.
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RE: Welcome to Club SAITO !
Then you are a better engine tuner and setup man than most, that's all.
I don't run engines inverted as I don't care if the cylinder head sticks out of my engine holder's cowl or not. Seldom do I bother with using a cowl anyway.
Fortunately, for me, I'm not into seeing airplanes as works of art. Having worked in crash/rescue in real life, all of my illusions have been shattered long ago about the aesthetic beauty of airplanes. To me, form follows function. The beauty, to me, is in the function. Not in how a plane looks so much. I know - I know. I'm in the minority. Well, someone has to be, so I guess it might as well be me.
Ed Cregger
I don't run engines inverted as I don't care if the cylinder head sticks out of my engine holder's cowl or not. Seldom do I bother with using a cowl anyway.
Fortunately, for me, I'm not into seeing airplanes as works of art. Having worked in crash/rescue in real life, all of my illusions have been shattered long ago about the aesthetic beauty of airplanes. To me, form follows function. The beauty, to me, is in the function. Not in how a plane looks so much. I know - I know. I'm in the minority. Well, someone has to be, so I guess it might as well be me.
Ed Cregger
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RE: Welcome to Club SAITO !
Mikester, I put a set of BOCA Ceramic bearings in my well worn Fox .50, they are very precise. The Fox is converted to Diesel operation. I have inspected the bearings twice since installation and all is well. I have a set of the BOCA ceramics here to install in an Enya .46 MKII. Its a shame you had a ball bust, that would be very disheartening.
RE: Welcome to Club SAITO !
GaGeeBees,
I agree, a Saito will run inverted just as well as upright. I too, mount mostly inverted and I don't have any deadsticks either. Properly tuned, it is not a problem.
Jim
I agree, a Saito will run inverted just as well as upright. I too, mount mostly inverted and I don't have any deadsticks either. Properly tuned, it is not a problem.
Jim
RE: Welcome to Club SAITO !
jdk,
You need to have an inlet opening of sufficient size to provide good air flow across the cylinder, if possible. Youalso need an exit, usually at the bottom that is large enough for exit air. The rule of thumb is three times the inlet size.
Jim
You need to have an inlet opening of sufficient size to provide good air flow across the cylinder, if possible. Youalso need an exit, usually at the bottom that is large enough for exit air. The rule of thumb is three times the inlet size.
Jim