stallwart

Member #243 here. I've recently installed an FA-82A (my first 4-stroke) in a 40 size Spitfire (fits perfectly within the cowl) and have begun running it in.
Thanks to info gained here, starting, running at proper rpms & proper mixture have given good results.
Lowspeed setting had been changed from factory(bought off the shelf), but I reset well enough for first round of break-in.
Can't wait...............

Hobbsy

My Feedback: (102)

Stall, the Saito LS needles are deliberately set very rich from the factory for two reason, #1, to make sure the frist runs are rich and cool for break in. #2, if the LS needle is too lean then no amount of richening the HS needle will do any richening.

stallwart

TW, thanks for your response. Again, info gained here warned me to attempt to reset the LS rich enough. Your reply added more useful information.
I am waiting until high 100deg temperatures here abate so that overheating won't tend to lean the mix while finishing run-in.

William Robison

My Feedback: (3)

All:

I'm still here, reading the mail. Been very busy, I'll catch up before long.

Bill.

Kimhoff

My Feedback: (22)

Will a Saito 56 fly a 4 STAR 40?

w4stp

Kimhoff
The Saito 56 will power the Four Star 40 very nicely you will need to put an APC 12/6 for sport flying or an APC 11/8! I prefer the APC 12/6
for the flying that I do mostly sport and a few stunts and you can look for about 16 minutes of fly time also check your CG real close I needed 2 1/2 oz of weight around the tail of the plane to ballance the Four Star with a Saito 56 Your going to love the way the Four Star fly's with the 56!!

crtmmac

My Feedback: (12)

Thanks. That's reassurring. Any issues with the timing mechanism? I'v replaced bearings on 2 strokes, but never on a 4 stroke. Thanks for your feedback

cheers
/colin

Hobbsy

My Feedback: (102)

Scratch, I'm going to try the .80 inverted today, it looks do-able.

NM2K

My Feedback: (14)

The model was originally shown with a Saito .50 on the plans and warned that Schneurle ported .40's or higher could lead to wing failure without throttle management. The .56 should be just fine.

davidjguerra

I have installed a onboard glow driver, that is the only reason it will idle at all! Horizon Hobbies has told me several times that it should idle normally mounted inverted without a glow driver, but I cant get it to. Ive tried different plugs, fuel, tank positions, etc. to no avail.

Hobbsy

My Feedback: (102)

Inverted Saito, early high compression version with upgrade spray bar and HS needle.
Fuel WildCat 15% Premium Extra with 18% 80/20 syn/castor blend.
Plug Early H9 SuperPlug.
Top rpm 9,500 plus.
With the tank full I leaned the LS 1/4 turn then set the throttle for a 2,000 rpm idle, give or take a few. I then went into the house to get the camera and then in my shop to get the tach, it was still idling when I got back. The transition is as clean and linear as when upright.

scratchonly

Did it idle inverted without the upgrade?

Hobbsy

My Feedback: (102)

I never ran it inverted before, it spent most of life side mounted on a Kombat .60 and Kombat Bi-plane from the Airplane Factory. It always had wet midrange before. But is completely clean in the transition now.

scratchonly

Hobbsy - looks like my setup. your tank even looks high. When I ran mine upright My LS had to be dangerously lean. Even more so inverted. I am waiting for my upgrade kit. they sent one fo the 180 by mistake. I'll keep in touch. Thanks.

scratchonly

Horizon sent me an assembly for a 180 by mistake(which I still have not received). Contact them and find out if they have an upgrade for the 180. The last 3 digits were the same on the part number. I ordered it about 2 weeks ago. They sent the 80 one on Wednesday.

scratchonly

David - they do have an upgrade listed for the 180 SAI180144. Put this in horizon search. You will find it.

scratchonly

Hobbsy-one more thing if you don"t mind; how far would you say your idle bar is from the spray bar? To idle mine is paper thin I need a magnifying glass to see a space between them. That is why I call the idle dangerously lean. Any closer and I can't Richen HS. Thanks for all your help. Proves again modellers are great people.

Iflyglow

My Feedback: (79)

I just picked up a new Saito .40a cheap last night at the LHS going out of business sale (50% off). What would be a good plane to match it with, and how much more powerfull is it than the .30. Is there anyone who would be interested in a new Saito.

rustypep

My Feedback: (6)

Anyone know the weight of the Saito 180 muffler or the AUW of both. The engine alone weighs 31 oz but I am trying to do some calculations and don't have the muffler weight. Thanks!

Hobbsy

My Feedback: (102)

Scratch, I'll get back to you tomorrow on that.

Ron McGrath

My Feedback: (10)

What is the upgrade carb kit for?

JettPilot

My Feedback: (6)

.

w8ye

My Feedback: (16)

First "Left Handed" Saito 08 Golden Knight I've seen?

Hobbsy

My Feedback: (102)

Scratch, according to "mikey" the LS needle is precisely .016 inch from the end of the spraybar. Each Saito feeler guage you see measures .004, 3 of them fall right through, 4 of them stay put with only minor pressure required to move them.

scratchonly

Wow and you can still get the HS rich if you try? I can only get 3 guages in my gap. Could we really be dealing with such small changes to make such a difference? I could run mine like this but i can only richen the HS slightly. It doesn't sound like the upgrade will make much of a difference to the idle. Will come back when I install the upgrade. Thanks for all your efforts, we may learn something here to benefit others.