Hobbsy

My Feedback: (102)

Jim, the only one of those V-12's that I saw was in a Ford Fire Truck from the 50's, it was actually a tanker for hauling water to fires. When it idled you could set a glass of water on the air cleaner and the water would not visibly giggle.

The Horizon number, 8,800 was achieved using an APC 15 x 6. Judging by the 15 x 8 that would be about right.

Glowgeek

To turn an APC 15x6 at 8800 rpm requires approx 1.50 hp; a good running FA91 can accomplish that. The FA115 is rated at 2.10 hp. I think horizon has a typo.

This Thrust Calc is what I use along with apc props to verify my engines are healthy.

http://godolloairport.hu/calc/strc_eng/index.htm

Hobbsy

My Feedback: (102)

It appears that the 2.10 hp rating is the typo, that figure is not in the specs unless I missed something.

Glowgeek

Dave, the link below is the reference I use to check the health of my engines. The HP ratings listed there are real and attainable using props within our useable range. As I've said before, I have always been able to reach those hp ratings listed on every Saito I've tested (FA45 MKII thru FA125) using 15% nitro. All that is except for Saito's pig (FA82) and those I have not tested (FA80 & FA120).

Specifications

Jesse Open

The Saito Pig is the one I use most!
It lugs well.

Two 72s and a 62 getting listed later today.
I tore down a few more planes and liberated some engines.

Hobbsy

My Feedback: (102)

The 82, both the A and the B are fine engines, the pig designation should saved for some other brand.

FlyerInOKC

My Feedback: (6)

Please PM what a .72 is going for these days. I don't have one that size.

Mike

Kolibri

Hello Saito club members, I am new to this forum (and glow engines) and I am interested in old open rocker engines.
I have a burning question about the old Saito FA 30/40 (MK1 and MK2). On the engine mount (on the side with "Made in Japan") they come with different letters (A, B, BC and maybe other letters?).
What is the meaning of these letters?

FlyerInOKC

My Feedback: (6)

Gary and Lonnie would know better than me but if I remember it was an indication of the batch run of the engine. One of the more smarter members of this bunch should be along eventually to correct me if I'm wrong.

Jesse Open

My favorite pig. I kinda like the way that sounds
Cant say it fits any of my other Saitos.
Lonnie gave it the name, I fly the heck out of them.
After all, a pig is just a small hog.


Long live pig power!

acdii

Those would be perfect for a four engine plane, but too small for what I have plans on. Minimum I will be using are 91's. If I downsize the B-17 plans they would work, but it would cost a small fortune to downsize the 5 sheets of plans, they want $4 and change per square foot to copy them.

the Wasp

My Feedback: (1)

LOL yee-p, I missed something all-right, or all-wrong in this case LOL

Jim

the Wasp

My Feedback: (1)

I see where I got confused, I was thinking about these posts I copied when I bought my 100. forgot all about coping them, it looks that the Saito 100 is rather sensitive to different fuels, and weather of course. a few guys are getting the 100 up to the mid 9s with the APC 15x6 on 15% nitro.

any hoo, it seams to me that the 115 would like the APC 15x7

Saito 100 Tach Readings: Please Post

Saito 1.00 RPM

Saito 100 & 120 RPMs?

what props on a saito 100??

Jim

Glowgeek

Pig power flies the crap outta my 46-55 size Sbach (6.38 lbs.). Pretty good on pull out of hover and strong uplines too. I would say an 82 is a good match for the PM 46-55 series planes or any 46 size plane.

Yeah Dave, there's nothing wrong with them per se.

Jesse Open

At the time when I bought my first 82 I already had 4 FA-72s . I quit buying the 72.
When seeking real power in engines of that size, I would forget Saito and just buy a YS.

Kolibri

Thank you! I will see if they respond with more details. Or is there a way to contact members directly?

Glowgeek

As Mike (Flyerinokc) said, the letters stamped on the lug are batch run indicators. An engine case with no letter stamped can be from an early/initial release batch run or it could be a replacement case which also has no letter stamped.

Private messages can be sent to a member by clicking on their avitar or by using the menu bar.

FlyerInOKC

My Feedback: (6)

Does the power problem make them less valuable? I still think I would like to have one. My flying style is more of the slow scale like poke around type than the 3D tear a hole in the sky type. My reactions aren't what they use to be neither is my building thanks to medication side affects. Darn hand tremors. All the same I'll watch for a YS in the future it sounds like I ned to dip my toe in and give one a try. I have never heard anyone say they didn't have great power.
What do you know I may have really learned something off you smarter guys after all! I confess I am in awe of depth of knowledge you guys have as I read the intricacies of these engines. The next project engine I find for sale may end up my first complete rebuild. The old adage you learn your whole life and when you stop you die certainly seems to apply here.

Hobbsy

My Feedback: (102)

Here is a shot of a pair of 82's, the left engine is an 82-B labeled A on the lug, the right engine is an 82 earlier version with a C on the lug. Addressing the right engine only, If the first run was called the A run/batch then the C is the third, if the first had no designation, then the C is the fourth run. Confusing enough?

One needs to be careful when buying engines, sometimes the early versions get listed as B versions because they have a B on the right lug designating the batch/run.

The right engine is made from spare parts except for the cylinder, it's new.

acdii

Finally got around to replacing the bearing on my 72. The outer one is fine, so left it alone, the inner was the howler. I tore it down, found only one gasket on the entire engine, and that was the cam cover, then I just set it on the bench, placed my heat gun in front of it and heated it to 220*, put my ov glove on, picked it up and thwacked it down on the bench and the crank fell out, put that on the side, and heated it a bit more, to 260, and did the smack down once more, inner fell right out and I let it cool while I cleaned everything else. Once it cooled, verified the bearings and the inner I could feel a bit of friction, and the front bearing was silky smooth like the new one, so left it, plus it has the rubber like seals so less likely to ooze oil out. Cleaned the case up, put the inner bearing on the crank, set it on a block I have made for this purpose, and heated the crank up again. Picked it up with the ov glove on, and slid it right over the crank and held it while it cooled. Went in perfect, and the crank is nice and smooth once more. Took all of an hour fifteen to pull it off the plane, replace the bearing, and put it back on the plane. Looks like a new engine too even though I know it has a LOT of hours on it, the muffler gives away that it has been used. Hoping to get it on the stand and fired up. Last time out I nosed it over on taxi and couldn't get it started again. Have yet to actually maiden this plane, it's the replacement Somethin Xtra that I won a few years ago, and replaced the one that the aileron broke off of and crashed.

Hobbsy

My Feedback: (102)

Good job, give us some rpm numbers if you'd like, we're short on 72 numbers.

the Wasp

My Feedback: (1)

my reply from Horizon>>

now, I will have to reply to this Email and ask Troy Abbott if the Saito Glow Engines> Bench Mark Prop RPM results are from using the fuels he described.

Hello, Are glow engines, we use 15% cool power Omega nitro fuel. On our single cylinder engines (gas) regular fuel 30-32% :1 and twin and radial engines we use 16:1 to 20:1 depending on engine for fuel mix.
Thank you, troy Abbott

Horizon Hobby, LLC

the Wasp

My Feedback: (1)

Mike, couldn't you be like me? are you sure you didn't just forget for a moment that you actually knew? LOL

Jim

FlyerInOKC

My Feedback: (6)

Well Jim they do say the memory is the second thing to go and I forget what the first thing is.

the Wasp

My Feedback: (1)

^^lol ^^, I'm getting there

Jim