rcspec

My Feedback: (15)

I think 8800-9200 is within range. Down much lower I don't think your getting full power advantage out of the engine and you may be generating more heat. The cooler the better as far as engine life is concerned.

Jim

blw

My Feedback: (3)

Jim,

The 170R3 came in a silver box with black letters.

w8ye

My Feedback: (16)

BLW,
I guess you are correct because my 90R3 also came in a silver box. I just went and looked.

NM2K

My Feedback: (14)

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It won't hurt anything to run 30% nitro in the Saito 100, but it won't buy you anything that you need with that engine/airplane combination. Good old 10-15% nitro fuel will work just fine, as will YS 20/20 blend.


Ed Cregger

NM2K

My Feedback: (14)

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I have a brand new bubble pack of Saito letters. How many do you need? <G>


Ed Cregger

w8ye

My Feedback: (16)

I have several Saito's with no sequence letter but they had the crankcase replaced on them

Flyer95

My Feedback: (1)

I have gotten some stainless bearings for my Saito 180 and the rear bearing have some kind of plastic ball retainer. Is it normal? I was wondering what is the different compared to steel retainer and advantage/ disadvantages for these?

w8ye

My Feedback: (16)

The polymide ball retainer is considered desirable over having the steel retainer

sundancer007

Saito timing. I have forgotten how to time a saito single. Put the piston on TDC for the cam install or BDC????

w8ye

My Feedback: (16)

Piston Top Dead Center with the dot straight down

To check yourself, then turn the crank 360 degrees and both valves should be exactly evenly open. One is closing and the other is opening. If you look across the tops of the rockers arms from the side, they should be even and parallel with each other.

Turn the crank another 360 degrees for the compression stroke and the point where you adjust valve clearance.

ClayH

Can someone tell me if the stock motor mount for the Saito 300 twin will work on the Saito 270 twin? I need a motor mount for this motor and am not having luck finding any cross reference on the part.

Thanks,

Clay

Flyer95

My Feedback: (1)

Thanks Jim,
I have now fitted the new bearings in my engine. Firstly the crankcase fit was extremely tight on the rear bearing and I had to use a lot of heating and force to remove the old one. My problem is now that the new rear bearing feels really rough[sm=cry_smile.gif], actually worse than the old stock bearing. The old one was loose but this one is rough. Do you think the extremely tight crankcase tolerances is forcing the rear bearing to go rough? Is it normal and should I continiue the assembly or should I buy new bearings?

Rob2359

Hi my name is Rob. I just got 2 Saito 72 & am working on a 91 or 100. I would love to have folks who's brains I can pick & find info from. I am new to 4 stroke. Flyinf 2 stroke for a long time.

Thanks

w8ye

My Feedback: (16)

Flyer,

Sounds as though you have ruined the new rear bearing?

When installing a bearing into the crankcase, you must drive against the outer race only.

No hammers. Use a arbor press only

The balls of the bearing have made imprints on one of the races

Jimmy Hoffa

My Feedback: (3)

Would having the cam gear timing off by one tooth noticeably effect performance?
Phillip

w8ye

My Feedback: (16)

Yes They do not run well at all.

It is easy to check the timing on our four strokes by just removing the valve cover(s) and the rocker arms should be parallel with each other when the piston is at top dead center. One the compression stroke both valves should be closed and 360 degrees rotation to top dead center again, you will find both the valves open the same amount and the rocker arms are still parallel. One valve happens to be closing and one opening.

OverTheEdge

My Feedback: (1)

Hi all,

I've got my first Saito on order... 82. Got a prop question.

What's the best fun fly / 3-d prop for this engine? I'm thinking apc 14x4W, 14x6 or 15x4W. Am I on the mark or does someone have a suggestion.
Also... Is the carb on this engine such that you can flip it for right or left side throttle linkage?

Thanks,

Ken6PPC

Any of those props will work on your .82 Saito, but the 15x4 is probably at the upper end of what I would try. I usualy go with either a 13x8 or a 14x6, but I know the 14x4W works well too.

As for rotating the carb 180 degrees - no sweat. Just remove the two mounting screws, and gently rotate the carb to the new position.

Once I got the LS needles dialed in correctly, I LOVE my .82's! I'm sure you will be happy with yours too.

N1EDM

My Feedback: (2)

Hello Rob,

Welcome to the group! There's lots of information here. And, occasionally Bill Robison consolidates the information here into something called Saito Notes. You might get a start by reading them (instead of all the posts listed here). Bill will send them to you directly, or if you (or anyone) wants, I've put them on my club's website with Bill's permission at http://www.ssrcc.org/Secret%20Page.htm.

I think that the Nov 11 2006 notes are the latest, but if not, could someone advise me so that I can get a more recent copy for the website?

Thanks

Bob

Birman

Bob, the link you posted for Bill's notes on your club website doesn't work.

Larry

Jimmy Hoffa

My Feedback: (3)

Very helpful info.
Thanks!
Phillip

N1EDM

My Feedback: (2)

Sorry about that. Not sure why it won't work. Perhaps that period at the end of the URL.

Try this:

http://www.ssrcc.org/Secret%20Page.htm

rajul

My Feedback: (58)

Thanks Bob. That's an excellent idea

mandtra

My Feedback: (29)

Has anyone tried to advance the timing on a Saito say such as a saito 91? I have tried and it seems to run better idle better .

w8ye

My Feedback: (16)

Advancing the timing on the cam one tooth generally degenerates the idle.

To retard the timing makes the idle better.

But when you change the timing and one area improves - the other end degenerates

The ignition timing can be changed by using a hotter or colder glow plug. But you advance a four stroke very much in ignition and it will throw the prop.