StuartARowe

Hi All

I want to put one of these engines into a Great Planes Revolver.

Anyone got any views on which one would be most suitable?

Thoughts?

Stuart

w8ye

My Feedback: (16)

The Saito 82 is more simple and will offer the most flexibility in the future

mike109

G'day

I have both. The 81 Alpha is in a Hanger 9 Piper Pawnee and the 82 will be going into a Sig AstroHog. I had an 82 previously in an Astrohog which I subsequently sold. It worked really well in the Hog. The 81 in the Pawnee has only had a couple of flights so far.

Both run well and swing similar props but I have never put a tacho on either.

Here the OS is $40 dearer than the Saito.

I prefer the Saito for its simplicity and the fact that the crankcase is not sealed. I wonder about the internal plumbing of the OS blocking up at some stage.

I only bought the OS as it was going out very cheaply.

If I had to choose again, it would be a Saito.

blw

My Feedback: (3)

at Chiefaircraft.com:

Saito .82b $299.99 shipped

At Tower Hobby:

OS .81a $369.99 and $9.99 s/h

liquid_TR

I vote for OS 81a, as its rock solid carburator will make tuning very easy; and OS will burn less amount of fuel than Saito..

OS internal oil circulation will keep your engine's inside well lubricated and rust free as well as your planes covering clean.

You can catch a deal at tower and get that engine for less than $300..

Augie11

You really can't go wrong with either one. I have 3 of the OS alphas and I like the feature which eliminates the breather tube. Only have 2 years on these engines so we'll see if there are any problems with that. I don't think there will be but then I run 4 stokes for about 20 years before I get tired of them! The glow plug is also a little easier to get at with the OS. But of course a Saito is.....a Saito. They're tough and really sound great.

All choices in life should be this hard : )

StuartARowe

Thanks for the replies guys. They both sound like great motors.

Still don't know which one to go for.

I did notice there is a pumped version of the OS. Does that make a difference to the decision if that's added into the mix?

Augie11

Yes, the price goes up! I've never used a pumped OS or Saito. They both seem to have adequate fuel draw with muffler pressure. I imagine the pump might allow for a little more remote a tank placement and give smoother running for aerobatics but again, I've never needed that.

w8ye

My Feedback: (16)

The pumped OS engines tend to run more consistent. They are not noticeably more powerful. Their worst drawback is that OS will change the design for the sake of change periodically and you can no longer get the old parts.

Saito is much better about obsolescence if you are going to keep the engine for many years

StuartARowe

Thanks Guys.

I've made my decision

I'm going for the Saito.

Stuart

lazyace

My Feedback: (126)

dle 20 gasser is the good fit

Hobbsy

My Feedback: (102)

Only if you enjoy hearing your chainsaw run.

Rudolph Hart

blw

My Feedback: (3)

Stuart, good decision. A Saito is an excellent engine for your first 4 stroke. Just ask about tuning when you get it. They are easy once you do it. I just broke in my first .82a and I already love the thing.

mike109

G'day

Do a search for Dave Hobbs's way of running in his Saitos. It is simple and it works well.

You will probably find that the low speed needle is set very rich "out of the box". leave it like this for the first 20 minutes or so of running and leave the glow starter connected initially to keep it running with the really rich setting that Saito suggests for the initial runs.

And enjoy. I am sure you will.

StuartARowe

Thanks Guys

Really helpful stuff.

Purchasing in the morning.

As for chainsaws. Love them. Got 2.

Cheers

Stuart

NM2K

My Feedback: (14)

No model engine sounds like the real thing, even the four-strokes. So we can choose between hearing something that sounds like our lawnmower (four-stroke) or our chainsaw (two-stroke). Now that I think of it, the turbine model engines sound the most like their real counterparts. And me stuck with a lowly pulsejet. (sigh)


Ed Cregger

Hobbsy

My Feedback: (102)

Ed, each year Bruce Tharpe and his father attend a Pulse Jet gathering at, possibly the Salt Flats and I've viewed several views of various years. Cool Stuff. They definitely have their own sound.

NM2K

My Feedback: (14)

Now that is one gathering that I would like to attend.


Ed Cregger

Broken Wings

My Feedback: (20)

All of my model engines are real, even the four strokes...

NM2K

My Feedback: (14)

There's always one in every crowd.


Ed Cregger

Konrad

Now what would really make their head spin is the concept of imaginary numbers as it applies to the ZDE. Now thats a "REAL" engine.
http://www.airplanesandrockets.com/r...ent-engine.htm

Toy engines rule!,

Konrad

NM2K

My Feedback: (14)

Ah, another trig freak seeking the solution for the square root of -1.


Ed Cregger

Augie11

I'm still waiting for someone to come out with a 7-cylinder 2.0 cu. in ROTARY 4-stroke engine for a Dr I. Glow driver installation might be tricky though ; )

SJN

Just build your own

[youtube]http://www.youtube.com/watch?v=oLW_6XCvBWI[/youtube]


[youtube]http://www.youtube.com/watch?v=A16EW19oR6k&feature=related[/youtube]