What carb setting for Saito 82 4s

[Swanee_3D]

The first thing you need to do is get some 20 20 fuel. The settings i use on my saito 82 is 1/2 out on the low end and 1/2 to 3 1/2 out. And when you get runing open the throttle up all the way and lean it down until you get max posible RPM's And then richen it up and take it down about 300 RPM.

[3dcrashandburn]

i have a new 82 and the directions says 2 1/2 out to start , 4 to 5 is way to rich thats for the 100 and up. this is four the high end needle

[aviti]

You can start at 4 or 5 out, it will just be running sloppy rich. 1/4 turn adjustments sound like your tuning a gasser. Just keep going in until you reach the peak and then back off a few hundred RPM. If it turns out you are like 1/2 turn from fully closed then you probably have a problem but otherwise you should be fine. Seems like mine ran at somewhere inside of 2 turns out but it can certainly vary. Low end is usually a little rich at the factory starting point. Again it should still run but be rough on idle and rich on transition. Lean the low end in very small increments until you get a smooth idle and a good transition.

I also ran my 82 in a profile and the vibration can give some tuning issues. My 82 would run much smoother on the bench and develop more RPM. Unfortunately the bench didn't fly worth a crap.

[stommerd27]

My 82s didnt run good until they had about 3 gallons of fuel through them. Then they were awsome. I have noticed that the biggest mistake I have seen people make with saitos is they have there low end set to rich. And they adjust there top end to compensate. It will run great on the ground but you get it in the air and its good and warmed up the first time you hold it 3/4 to full throttle for more than ten seconds she dies and your dead stickin. All I run are saitos and they seem to be tempermental on the bottom more than the top. They can be pretty rich, almost to the point of looking like you have a smoke system on board, up top and still perform well. But you have to have the bottom set right or they like to die or stumble along.

[pitviper51]

i wish i still had my pretty 82,, back when i started this thread i had it on a 40 size profile,, now i wanna do it again haha might have to go with a 91 and a 60 size profile heheh
mike

[Craigsc5]

I have two Saito 82's and two 125's, if you set the idle adjustment first and as reported in other posts, not too rich but slightly lean, after idle is reliable then set high end, not too lean, also get rid of the Saito glow plug and use OS type F plug, the engines will run well on 15% and better on 20-20. I am having good results with 13-7 APC props on the 82. On the 125 the 16-7 works well.

[obriendigital]

How many turns out from the stock setting for the low end are you running? Stock setting is flush with the plastic control arm correct? I have mine about 3 full turns in and still runs bad on the low end, but transitions to high end real well. Thoughts?

[2walla]

Set the main needle about 2 and 1/2 turns. Then with the throttle barrel closed gently close the low end needle all of the way. Then crack open the throttle barrel so you can just see a sliver of the air passage open. Put a piece of fuel tubing on the nipple and gently blow into it while opening up the low end needle. When you can just hear the air start to flow you are at the starting point to begin tuning. Run the motor, set the high speed needle then reduce the throttle to idle, let it steady out for 10 seconds or so, then pinch the line, if it dies immediatly it is too lean, when it is right it will run for a couple of seconds with a slight acceleration before it dies. The low speed and the high speed interact much more than you think. Most 4 strokes come from the factory a bit rich on the low end.

[Craigsc5]

As 2walla says, most 4 stroke Saitos come rich on the low needle setting, in addition temperature, humidity, altitude, and the condition of the glow plug will have a bearing on the setting, I pay less attention to how many turns and more attention to how the idle sounds. If you have a nice crisp idle and still have good transition to open throttle then you would be pretty close.

[Dewayne Vaughn]

mam-o-man craigc5, thems some ugly airplanes you got there......

( can I have 'em?!?!?!?!?)


Haaaahahahahahaha

All kidding aside, get an os #F glow plug for starters....

there's a very good thread at rcu on saito engines and how to adjust them.
more info there than you can digest all at once,but it's broken into segments to make it easier.
I promise you will know everything you will ever need for the care and feeding of your saito after you get through that post.

Luck, Dewayne

[obriendigital]

I had an inline sullivan "crap trap" trap on my line from the tank to the motor on my FA-82 and thought that was causing my low end to die after about 20 second at idle.

Now with a straight tube from the tank to the engine I am having even more problems! My engine will die immediately when I pull the glow driver off it is less than half throttle stick. It will run with the driver on however at low end. So, I have taken the driver off and set the high end, about 9100 rpm. Then back down to the low end and it dies every time when it hits 5000-6000rpm. I have set the low end needle back to factory settings, nearly flush with the throttle arm, then moved out a quarter turn at a time. I have gotten to at least 4-5 full turns out and no luck. I am running an OS "F" plug. This motor has about 2 gallons of 15% fuel through it. Any ideas?

[FlyingMadDog]

	Quote: Originally Posted by obriendigital
	I had an inline sullivan "crap trap" trap on my line from the tank to the motor on my FA-82 and thought that was causing my low end to die after about 20 second at idle. Now with a straight tube from the tank to the engine I am having even more problems! My engine will die immediately when I pull the glow driver off it is less than half throttle stick. It will run with the driver on however at low end. So, I have taken the driver off and set the high end, about 9100 rpm. Then back down to the low end and it dies every time when it hits 5000-6000rpm. I have set the low end needle back to factory settings, nearly flush with the throttle arm, then moved out a quarter turn at a time. I have gotten to at least 4-5 full turns out and no luck. I am running an OS "F" plug. This motor has about 2 gallons of 15% fuel through it. Any ideas?

When your engine runs with the glow plug on but not without it, you are either rich, or you need a new plug. You said that you set the idle flush with the arm and then started to back it out, that is making it more rich (and the factory setting is usually very rich on the low end). Reset it back to the factory setting and start turning it IN a quarter at a time, if your idle rpm peaks and then drops off, back it out a little richer than the peak. If it STILL won't run when you take the glow starter off after that, time for a new glow plug (and yes OS "F" plugs are all I ever used in my saito .82).

Hope this helps.