Hi guys!!!

I'm returning to the sport after several years and have jumped into the deep end by getting a Saito 100 which I'm putting in a JR F3A 90 Pattern aircraft. Just to prove I'm insane, I've done this having just moved to Japan!! As such I have trouble getting advice as I don't speak Japanese!!

I got the engine today. Very nice but I have one question, It has a pressure nipple installed both in the crankcase and on the muffler. Do you use both? If not, which would you reccomend? What is the best way to blank off an unused one?

If anyone has a Saito 100 (Or similar) could someone help me out and scan the instructions (In english!!) to me? Or perhaps a reverse charge fax?

My email is [email protected]

Thanks

Hello!
The nipple at the back on most fourstrokes is not a pressure nipple!
It is a nipple for getting out the exess oil in
the crankcase (the same for all other fourstrokes,cars etc).
The nipple on the muffler/exhaust tube is the one you you should use for pressurizing the tank, if you want to pressurize that is...the engine will work okay on no tankpressure!!
Regards!
Jan K
Sweden

All becomes clear!!

Thanks Jaka, that's a great help!!

I take it you then run a line from the crank nipple overboard?

Thanks again,

rossan

I would run this engine some on a test stand first to get the needles set. (do it just like you did your two cycles.) Run the first tank slobbery rich wide open throttle but richen down around 7000. Alway keep the mixture rich enough to where there is a smoke trail behind the engine.

The glow plug may work in your engine and it may not. The best plug is the OS 'F' for that engine. If you cannot find one, you might get by with a Enya #3. Break it in on 10% but after you get it broke in you want to run 20-30%. 13-6 is about the smallest prop. A 13-7 or 8 would be better.

Keep in mind that this engine has a very strong torque kick and may shake your airplane so much that you think the prop is out of balance.

Also on a four cycle if you get it the least bit lean, it will back fire and bust the spinner or throw the prop off.

Jim

Now Jim, you know that is not what the Saito instructions say. He should run it for the first 10 minutes at 1/4 to 1/3 throttle and only slightly rich at 4,000 rpm, the first 10 minutes is the most critical. The manual leaves you on your own at that point, I than run a 12 OZ tank through it at 5,000 and another at 6,000, Saito considers it broken in after 40 minutes. If you run it slobbery rich the operating temperature will be so low that the clearances will not wear in properly.

My new OS 91 Surpass had a different break-in procedure. It called for the engine to be at full throttle and slightly rich (normal run). Then every 10 or 15 sec to adjust the from rich to normal run while at full throttle. Do this for 2 tanks (in the plane). Then for the first 10 flights start at rich and slightly lean to a normal run after 10 flights. I followed the 2 tank bit but couldn't see dogging it through 10 flights to get to normal. I went to normal after the first or second flight. Are both Saito and OS sleeves nickel lined? What is the basic difference in these 2 engines?

Rossan, maybe it would be best if you went to horizon and down loaded an English manual http://www.horizonhobby.com/shared/t...itosingles.pdf the manual for the 80 and 91 are the same as your 100

The Enya #3 will get WAY by the OS F plug . It will work every bit as well and is likley to outlast 2 or 3 OS "F' plugs.
The OS F plug is now my "second choice" plug in YS and Saito engines . I only use it when I can't get an Enya.

Buz and Rossan, I have nine different Saito's no two the same size and the instructions are the same for all, Buz is correct about getting the instructions from the Horizon website. LadyFlyer is also right about the OS-F not being the plug of choice anymore, the Enya and the Hangar Nine Super Plug are both better.

I have 4 and they each have there own tick's, My question for you would be, I know where to get the H-9 plug's but where can i find the ENYA plug's , my LHS does'nt have em ??

You can get them from Tower among many other places.

Jim

Thanks to all!!

I'll print off the manual which will be invaluable. RC modellers sure are the best when it comes to helping each other out!!

Hello!
I have ben into this hobby for more than 25 years (know 48) And from time to time have heared that the Enya 3 glowplug could be used instead of the OS F plug in fourstrokes... I have tried this on varius ocations but can only say that I have been disapointed.... I must stress that the plug to use...at least in OS engines ..is the F plug!
Regards!
Jan K
Sweden