What carb setting for Saito 82 4s

[obriendigital]

	Quote: Originally Posted by FlyingMadDog
	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.

Well, tried a brand new plug, no luck at all. Set it back to the factory low end and it will start, but when i pull the glow it dies. So, if i rev it up to full throttle set the high end with the tach and am getting about 9,000RPM, and pull the plug it runs, but then back the throttle off and it dies about 7,000RPM everytime. Tried leaning the low end a bit again, no luck. I am really out of ideas now...

[pani]

Obrien, 9k is far too low. What prop do you run? Sounds to me that you are way rich both high and low. My 82a needed two turns leaning (that is screwing the needle in) at the low needle from the factory setting and that is with 20% nitro. My high is around 2 and a half. Yours should be even leaner as there is more methanol in the 15% nitro mix. Blip the throttle from idle to full as you lean the low. When it stops transitioning, turn back 1/4 turn. You 're there. Same as Maddog says, different approach.

[eblenkle]

	Quote: Originally Posted by 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?

I just got off the phone with Horizon, they confirmed the low needle should be flush with the top of the plastic arm. Set that way from the factory.

Ernie

[rcairflr]

	Quote: Originally Posted by eblenkle
	I just got off the phone with Horizon, they confirmed the low needle should be flush with the top of the plastic arm. Set that way from the factory. Ernie

Sorry to tell you, but Horizon gave you bad information. I have set up numberous Saito engines and they all come with the low end needle very rich. Usually takes 2-4 turns ins from factory setting to get them right.

[eblenkle]

	Quote: Originally Posted by rcairflr
	Sorry to tell you, but Horizon gave you bad information. I have set up numberous Saito engines and they all come with the low end needle very rich. Usually takes 2-4 turns ins from factory setting to get them right.

Thanks Rcairflr

I called because I "accidently" moved the needle and needed to get to a good starting point.

I would think to begin you want rich, otherwise you could overheat the engine in a hurry.

I appreciate the info.

Ernie

[rcairflr]

Just make sure you lean it out some before flying to avoid deadstick. Don't be afraid to lean out the low end needle. Once you get it set right, there aren't too many glow engines that run as good as a Saito with the needles adjusted correctly. Enjoy

[eblenkle]

Ok, someone please clarify...

The Saito 82 uses an Air Bleed carb, so just like any other carb "in" on the high needle is leaner, but "in" on the low end needle should be richer because you're adjusting the air mix, not the fuel.

Am I missing something here? Earlier in the thead I was directed to lean the engine by adjusting the low end needle in 2-4 turns "in"

Sorry I'm used to OS, Saito is new to me, maybe someone can explain. I just want to make sure I'm adjusting in the correct direction.

Thanks
Ernie

[rcairflr]

Low and high end: Clockwise = leaner, Counter clockwise = richer

Low end, 2-4 turns in from factory setting of flush.

[Dewayne Vaughn]

Quote: The flush initial setting of the LS needle was with the metal throttle lever. With the later plastic lever the flat of the LS adjuster is roughly 1/16" down at the factory setting - the thickness of the plastic at that point. : end quote

that is from 'the complete saito notes' by Bill Robison

[eblenkle]

	Quote: Originally Posted by Dewayne Vaughn
	Quote: The flush initial setting of the LS needle was with the metal throttle lever. With the later plastic lever the flat of the LS adjuster is roughly 1/16" down at the factory setting - the thickness of the plastic at that point. : end quote that is from 'the complete saito notes' by Bill Robison

Thanks Dewayne

That might explain why my seting seems a lot richer than it needs to be.

Ernie

[Dewayne Vaughn]

Your very welcome.

The Saito engine line has improved drastically in the last 20 years. They don't really have many duds in the lineup.
You might want to give Bill Robison's note a good read. I think it's here, but I know its over at rcu.

Luck, Dewayne

[blackbeer]

	Quote: Originally Posted by eblenkle
	Ok, someone please clarify... The Saito 82 uses an Air Bleed carb, so just like any other carb "in" on the high needle is leaner, but "in" on the low end needle should be richer because you're adjusting the air mix, not the fuel. Am I missing something here? Earlier in the thead I was directed to lean the engine by adjusting the low end needle in 2-4 turns "in" Sorry I'm used to OS, Saito is new to me, maybe someone can explain. I just want to make sure I'm adjusting in the correct direction. Thanks Ernie

Wrong, it's not an air bleed carb. It's the same as your OS. I have no idea why people are hung up with factory setting. I treat them just like any other engine. I close both needles and open them 2 - 2 1/2 turns, start them up and tune from there. Mine all run great and I can't remember the last time I had a dead stick with them.

Tom