The engine is new and hasn't been started. I want to know if I can turn the carborator around so the throttle will be on the oppisite of which it is now? Also I have 13x6 K-Series and a 14x6 K-series props. These are the only 2 I have at this time.Which one should I use? Any more help you could give would be helpful.
Vic

You can turn the sarb. Just remove the two screws that hold it to the back plate. Then swivel it toward the top of the engine being carefull not to pull it out from the head. Then you can turn the carb around and rotate it back into position. Once the screws are back in your done.
I would break it in with the 13x6. The book gives pretty good instructions on break in. My .82 would turn to much RPM even at the richest setting. So I did the first few tanks at 1/2 throttle with the needle all the way rich. I also adjusted the valves before the first run. Mine were way to loose. Go slow Vic and ask if you need more help.

David

Thank you Sir
I DID AS YOU SAID and Started with the 13x6 prop and the 15% Omega fuel.it started wright up with no problems and i set the idle at 4000 rpm. and ran three tanks thrue it then i adjusted the high to where it was doing approx. 9500rpm.It sound good even with the low speed set at the factory setting it still responds very quick.I think i will take it for a flight tommorrow if i get off in time.I read the manual about setting the low speed but can you give me a few extra tips.You know where thay say to set a two stroke by sound well from wourking 25 years in the rental natural gas compression business i have trouble hearing the diffrence in the sounds i guess it from wourking on a lot of Ajax and Cat natural gas engines.That a good one i can keep engines running that cost several million of dollars but have trouble with a $200.00 one.Go figure.
I really do thank you for your help.
Vic.

1. Don’t fly with low-end needle at factory setting!
2. Buy immediately any of cheap tachometers.
3. Turn in you low-end until your engine will hesitate to throttle up (to 1.1/4 turns from factory settings!). After that turn the low-end out ¼.
4. Adjust your high-end by max rpm and turn it out by 200 rpm less.
5. Fly after all above is done. Use 13/6 prop.

I was told that the Omega 15% (which I currently run on my 2 strokes) does not have enough oil in it...?? Or are you running a different version of the Omega 15%. If this is correct can you let me know... as I have not started my Saito yet, and would like to continue to run the 15% Omega if I can.

For anyone out there who could put my mind at rest. The fuel I brought was Power Master YS/Saito 20/20, fully Synthetic. Is this any better/worse....?
Also, I originally got myself a 13/6 prop when got the engine, but then didn't see that prop in the propeller chart so then changed it to a 13/8. Good - Bad, doesn't matter...?
Finally, the book said to oil various parts of the engine prior to the first run. What oil can/should I use??
Any Suggestions??

Chris

I will set the low neddle how you said to set it .I,m pleased with the motor so far.I have a tach.I will let you know how it goes.
Thanks again
Vic.

Chris, I don't know anything about Omega fuel. The YS 20/20 is a good choice for the the Saito. I run 30% Riches Brew in one of mine and PowerMaster 15% in the other two.

The prop size and pitch depends on your plane. The prop chart is a good starting point. The 13x6 will be a good break in prop but I hesitate to tell you what prop to use without knowing the plane.Just be sure on the first few runs to have a tach and keep the RPM below 6,000.

I use my own blend of after run oil to pre lube the engine. It's a mix of ATF and Mystery oil mixed 50/50. I have also seen guys use air tool oil and gun oil.

David

The Morgan's Omega 15% fuel is fine in a Saito, it's my fuel of choice. Plenty of oil, and it's a castor/synthetic blend.

I would avoid the YS 20/20 all synthetic, unless you add 3-4 ounces of castor oil per gallon. Just buying Omege 20% will get the castor oil at no additional cost.

The 13x6 is a fine starter prop, fly with it and see what happens.Want more vertical, go to a 14x4. More speed? Try a 12x8.

Bill.

I didn't get to fly the plane today but i ran the engine a bit more it sure sounding good the only think i need help with now is you said to turn the low speed needle valve in till it cut out when you opened it up. You wrote turn it in no more than 1.4 turns well i had to turn it in approx. 3 turns to make it hesitats but the idle did smooth out at that point but i fugered that was to much so i reset it back to the factory setting and am writting you to see what you think.But i may have missed under stood what you wrote.
Thanks a bunch
Vic.

Vic the factory low end settings are way rich. It is possible yours is three turns to rich. If it will idle good and transfer good you should be fine. If it stumbles during a fast transfer richen it up until it dosn't. Also did you adjust the valves? The suplied feeler gauge should drag slightly when set correctly. When my Saitos valves get out of adjustment it seems to effect the low end and transfer first.

David

Hi Sir
Thank for the help that makes me feel much better i will go back and reset the low end needle it was some where around three turns but i didn't count them.But as i turned it in till it hesatated then turned it back out approx.1/4 turn that made it idle much better and the transition was good.This is my first 4 stroke and if it keep going like it is now i will not go back to the 2 strokes because if you have a tach, setting up the engine is not that bad .I've stayed away from 4 stroke because all the things you hear bad from people about them.About the valves when i got it the intake valve was way to loose. so i checked and reset both of them because the exhaust was just a bit tight.But after running it for a while i rechecked them and thay both where a bit tight i think i got them a bit tight when i set them the first time.I'm not used to working on a set of valves that small heck i have trouble see the valve gap it being that small.
Thanks again i could not have did it without your help.
Vic.

Good luck and good flying Vic. I love my Saitos. I got my first one 2 years ago. A .72. I fly a lot in the Summer. I have yet to have a dead stick with any of them. My next project will use a YS 1.40. I hope it's half the engines my Saitos are.


david

I have a Saito FA 82 (my second Saito). Have about 1 1/2 gals fuel through it so far. Have adjusted the valves. Running 15% Omega fuel, 14x6 APC prop. Plan to go to a 15x4 after another gal or so. It is in a Funtana 40. 11 oz tank. Runs great but have a strange problem.

I can not get more than 6 minute flights. The only time I use full throttle are the take off run (very short), going straight up (3-4 times a flight) or pulling out of trouble. I timed it on the ground with throttle set at about 4300 rpm and no throttle change. It ran 7 minutes & 45 seconds. Very small amount of fuel left in tank. I flew today with quite a bit of wind and spent most of the flight playing with the wind at low throtte like stationary harrier (lots of fun). Rest of flight was maneuvers like KE, cubans etc. Barely made 6 minutes. I have NOT adjusted the low end. It transitions really well so have seen no need.

Any Ideas? I thought I would get 10 minutes easily. BTW, I had to open the needle 3 turns to get rich enough at the beginnninng. It is now more than 2 1/2 turns ouut at 9100 rpm.

Thanks

Rider:

It's time to lean the idle. The FA-72 should give at least 10 minutes on an eleven ounce tank, if you don't keep it wide open.

Bill.

I have the same thing. I Funtana .40/ Saito 82 / APC 15x4W/ 30% riches Brew. I fly 8-9 minutes and land with fuel.
I have gone as much as 10 minutes and still had fuel. Mine is wide open maybe 10% of the time.

david

Omega is 17% oil 70/30 castor/synthetic ratio. It contains sufficient oil as long as you keep her 300 rpm rich of max lean rpm.

William,
Thanks. I have an 82 not 72 but I think I should still get about 10 minutes. I will lean the lower end the next time I get a chance and see if that helps. Others get 10 minuutes on this combo and so should I.

Jim

Rider, do not afraid to lean that low end, it is not a big deal with Saito to get it running right.
You will have 10-12 min. I think with your prop you have to get 10000 RPM. I have 10 500 with 13/6 MA in humid hot weather after one gallon.

I AM going to lean the low end as suggested. I assume the low end being rich DOES cause higher fuel consumption?? Is that because the low end needle adjusts fuel flow while the high end adjusts air? This would obviously apply to all Saito engines?? My 100 is also poor on fuel consumtion.

I am one of those who wants to know why, not just what or how. Don't mean to be a pain in the a**. Can't help myself. Just ask my wife.

Jim

The low speed needle controls about 80% of the throttle travel mixture control so it influences most of the fuel economy or the lack of it. When I lose or think I have lost the needle settings I richen both needles a little, then peak the high speed needle, richen the rpm from peaked down about 200 rpm. Next I procede to lean the low speed needle 1/8 turn at a time checking the idle and transition and high speed setting after every other change, one of the lowspeed needle changes will make a greater change in idle rpm than the previous ones did, now you are close, now set the LS needle for the best transition. I prefer to sacrifice a little idle speed in favor of a better transition as in I settle for a 100 rpm higher idle speed to get the best transition. It's the better trade off if a trade off is necessary.

Unbelievable difference!! The low speed needle was almost 2 turns too far out (rich). I turned it in until it hesitated on transition. Went back a bit more than 1/8 and the transition was fine. Tweaked the high speed needle a bit but left it a bit rich. Still want to run her more before I tweak it out. Couldn't fly because of a loose strut on my horiz stab. BUT, timed it at 4500 rpm which is about half throttle. I made sure it was a little faster than my last test. The first time, it ran 6 min 45 sec and quit. This time it went 17 1/2 minutes with some rev up every once in a while. I got sick of waiting for it to run out of fuel. Shut it down and it took 16 cranks of my Hobbico fuel punp to empty the tank the rest of the way. That is about a third of a tank. WOW!

I'll tweak a bit more but this is going to be way more fun, not to mention a lot cheaper. Will cut my fuel bill to about a third of what it was.

Bet I get at least 10 minutes of whatever flying I want to do now.

Thanks everyone. I'll do my 100 next time.

BTW, a LOT less fuel and oil on the airplane. Guess that should have been a big clue to me before but I just don't have enough experience with these four strokes. This has been a great lesson. Wonder why Saito doesn't make this really clear in their instuctions?

Again, Thanks.

Jim