w8ye

My Feedback: (16)

The Viton O-ring in the little separate package in the kit is the one that goes in the head

freeonthree

My Feedback: (1)

Saito 56, threaded pipe between the cylinder and muffler. Anyone know off hand what size and thread pitch it is ? If I can't find a Pitts muffler, I need a longer section of pipe to get the muffler outside the cowling on my little Pitts.

RC Specialties

freeonthree,

The thread is a 10x1.0mm at the cylinder. On the .56 I believe it is the same at the muffler.

Jim

freeonthree

My Feedback: (1)

Thanks ! Now to find some of that... I hope it's available locally here somewhere... I'll try the local True Value Hardware store first. Thanks again !

freeonthree

My Feedback: (1)

Well, True Value doesn't have it. The search goes on !

w8ye

My Feedback: (16)

1/8" schedule 40 water pipe is the right diameter but you will need the 10m X 1m die

The 1/8" pipe has an OD of @0.405"

10mm = .3937"

RC Specialties

freeonthree,

Below is a link that has the die if you need it.

Jim

www.e-taps.com

blw

My Feedback: (3)

kochj,

Saito rates both the 1.20 and 170R3 at 2 hp.

Ernie Misner

>>> The Viton O-ring in the little separate package in the kit is the one that goes in the head >>>

Thanks Jim! Let me know if anyone has ever found these at a local supplier....

Thanks,

Ernie

Ken6PPC

Ernie, I don't know if you will find the exact size you need, but Auto Zone and similar auto parts stores sell Viton O-rings. I got some at my local Auto Zone in a little blister pack.

EDIT: Just make sure you get VITON O-Rings! The package specified that they were Viton, and are fuel-resistant.

freeonthree

My Feedback: (1)

I think I will just order another stock pipe, and join them together with a 10x1.0 nut and use the red loctite. That will be the easy way out. I will just have to cut the 2nd pipe a little shorter.

blw

My Feedback: (3)

Ken,

Thanks. I think a lot of us were wondering where to buy those locally.

freeonthree

My Feedback: (1)

I called Horizon, but all they had was stock stuff. He suggested that I call slimline mufflers, but they said that they didn't make a pitts muffler or an extension pipe for a 56. I just need to order the extra stock pipe now.

Ernie Misner

Thanks loads Ken!

Ernie

jm_obrien

My Feedback: (6)

Well guys I've said it time and time before but Saito and Horizon Hobby are the greatest!! Some of you may remember my posts about my 82A......I just opened the box from Dave at Horizon and the note said that the connecting rod was seized at the bottom AND top and there was major damage to the internals. In other words, I completely destroyed the motor. Best part was that a new engine was in the box as well, UNDER WARRANTY!!!! No other manufacturer is going to do that for us, I am a customer for life!! I already was for Horizon anyway but it will be nothing but Saito's in my future. I'm obviously going to spend more time on the stand making sure this one is tuned right. Thanks to all and a special thanks to Horizon Hobby.

Jon

N1EDM

My Feedback: (2)

On page 281, I showed some photos of a Saito 120 that I was rebuilding. I'm re-attaching those photos here along with some "after" photos. All I did was to use the old anti-freeze in the Crock Pot trick for about 4-5 hours. The goo came off pretty well. Sorry about the fuzzy photos. I just can't seem to get my camera into manual focus tonight, but you can get the idea.

And, for the new guys, if you haven't downloaded the last Saito Notes (from last November, the last time that they were published) you can head up to http://www.ssrcc.org/Secret%20Page.htm and grab them along with a couple of videos.

Bob

Hobbsy

My Feedback: (102)

Lookin good Bob, I've got my 1.50 back together but haven't it run it yet, too many planes to get ready to fly.

N1EDM

My Feedback: (2)

I know what you mean, Hobbsy. I have that same affliction... and a scale bird or two that I also want to start....

Bob

alfredbmor

Guys I have a problem here:
I rebuilt a Saito 72 some about one year a go (After I bought it at ebay and found that it didn't work at all) I replaced the bearings and had to disassemble almost for complete. After the rebuilding, and breaking in again, I noted that it does not run anything similar (or close) a saito 82 but pulled my H-9 Stick 40 size OK with a 12 x 7 prop. Since that rebuilt I have been thinking if something is not OK with the engine and I have read many things about these kind of engines, I have posted many questions here and I have learned a lot from many of you, like Bill and many others.
The question now is that I decided to disassemble the engine again and look for that tiny dot at the rod, because I found at this page:
http://tech.flygsw.org/sick_saito4.htm
That this dot goes towards the intake side of the cylinder; disassembling mine found that the dot goes towards the front of the engine, I turned the rod as this page states and found that I just can assemble the engine again because the piston position (Too much to the back), I believe that the answer is obvious but I need this professional advised about the "short" and "long" side of the piston.
I took a few pics of the related confusion.

Thanks.

Alfred.

Hobbsy

My Feedback: (102)

The bearing in the big end of the rod will have a relief or a chamfer on the side that goes next to the crankshaft, it fits against a filet (or radius) on the crankpin.

alfredbmor

Like this?
If so, this is the way with the dot towards the intake and the piston is to much to back of the engine.

alfredbmor

Sorry about that Hobbsy I think that you mean this chamfer.
Is it correct?
Thanks for your valuable help.

proptop

My Feedback: (8)

Yep...that's the chamfer Hobbsy is talking about.

Kmot

My Feedback: (24)

Alfred: Here is a good description of a chamfer, so you can recognize one anywhere:

http://archvlsi.ics.forth.gr/arch_ca...fer/index.html

proptop

My Feedback: (8)

The bottom end of the rod is off-set...
IIRC he dot goes towards the crank....
The chamfer is necessary to clear the crank-pins fillet radius.