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Welcome to Club SAITO !

Old 01-16-2006, 08:32 PM
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Default RE: Welcome to Club SAITO !

The Saito 270T is a discontinued product for Horizon Hobby.

Here is the current opposed Twin instruction manual.....

http://www.horizonhobby.com/ProdInfo...n_cylinder.pdf
Old 01-16-2006, 09:07 PM
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Default RE: Welcome to Club SAITO !

Been reading some of the post here because by Friday my LHS said my Saito 125 will be here. Had K & B's' Fox's, ST's, Magnum', OS's but this is my first Saito. So I may need a little help here and there. Looks like this is a very good place for a new Saito owner.

one question if I may? I use Omega 15%. Some people here add Castor oil to there fuel. Why is that?
Old 01-16-2006, 09:10 PM
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Default RE: Welcome to Club SAITO !

Omega already has some castor in it.

People like to have a little more oil in their fuel

Enjoy,

Jim
Old 01-16-2006, 09:14 PM
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[b]Thunderchild:

A Jim said, the FA-270T is long gone. A lot of the parts are the same on the FA-300T and some of the swingles, so routine service is still possible. The last time i remember seeing one on the shelf was about 1990, but don't take that as the lawst date for their sale.
-------------------------------
Bob:

Again, agreement with Jim. Back the LS adjuster right out, set the HS needle, and only then do the low speed. And install a good fuel filter.

Bill.
Old 01-16-2006, 09:37 PM
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Default RE: Welcome to Club SAITO !

Can someone tell me what the velocity stacks do and what size engiens these will work on? Will they work on other brands?
Old 01-16-2006, 09:56 PM
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Default RE: Welcome to Club SAITO !

Thanks William re the 270,

There is a secondhand one out here up for sale. Says it has had no real use. I'll keep scratching around.

Regards,

Thunderchild
Old 01-16-2006, 09:56 PM
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KH:

Strictly speaking, we're not talking about velocity stacks. A true velocity stack is part of a tuned intake tract, all we have are extensions to the intake ducting.

These stacks work to good effect on all engines, not just two or four stroke. I'm sure you've noticed the fuel spraying back out of the intake, the stack keeps most of that fuel in the airflow, it's drawn back in on the next intake cycle. The result is better fuel economy, and less fuel sprayed around inside the cowling. The best of all is a stack with an air filter.

Bill.
Old 01-16-2006, 10:08 PM
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What was the valve lash...and what did you set it too now? just wondering Capt,n
Old 01-16-2006, 10:15 PM
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Thunderchild:

Don't dismiss the engine out of hand. If it's truly a low time engine it will give many hours of good service before it needs anything other than routine maintenance.

If you can get it on approval up to $400 should be an OK price. Without approval I'd stay around $300 though.

Bill.
Old 01-16-2006, 10:18 PM
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Default RE: Welcome to Club SAITO !

Thanks Bill, good advice.

What HP does the 270 make?

Cameron (Thunderchild)
Old 01-16-2006, 10:26 PM
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Cameron:

Zinger 18x10, 8500 rpm (I've been told) and that means a little over 4 hp and about 25 pounds static thrust.

Bill.
Old 01-17-2006, 12:07 AM
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Default RE: Welcome to Club SAITO !

Valve lash is listed as .0015" to .004"
Old 01-17-2006, 12:17 AM
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Jim:

I thinki he was asking if Bob had checked th valves on the engine he was trying to tune.

Bill.
Old 01-17-2006, 12:19 AM
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Default RE: Welcome to Club SAITO !

I see now that I've re-read it in that context.

Thanks,

Jim
Old 01-19-2006, 11:39 AM
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I swapped the carbs on this Saito .50 and .56, the .56 carb had a boss cast on the back of the carb for the old airbleed which prevented me from mounting it on my RCM 40, the venturi size and intake tube are identical. The .50 is several years newer than the .56The .56 is on the left.
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Old 01-19-2006, 12:15 PM
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Jlkonn,
On the Intake Velocity Stack, does it just clip on the Saito 100 Carb? Looks like it in teh picture from Horizon. I understand the need for a o-ring in between the carb and the new stack. Is it secure or did you have to make it stay by other means? How about a Bru line filter, did you try one of them? Allot of questions I know and I don't mean to come off rude but was just wondering. I talked with Bill Robinson about a week or so ago and he told me I should do it on my 100. I have only run mine 4 times now on a test stand. I am also going to put mine on my UCD .60. I read in the thread that you have a 100 on your UCD and I was wondering how it is working out for you? Thanks again for any help or advise you guys are a blessing to us new too Saito! BTW
I really like how the 100 sounds quiet, but tough! mine allready seems to idle fairly well! Thanks again and good luck all!

Chuck

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Old 01-19-2006, 01:01 PM
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Default RE: Welcome to Club SAITO !

Chuck,
No problem with the questions.
You use the two screws that mount the carb to the engine.
The velocity stack bracket stradles the carb.
It is an easy job to put it on.
Once you get one you will see immediately how it works.
The Saito 1.00 on the UCD .60 works great!
I had no problems mounting it except I had to switch the carb orientation...swing it 180 degrees to make the throttle linkage work. Again, an easy job.
I have unlimited verticle with a 15x6 APC and Sig 25% nitro 20% oil, 50/50 castor/synthetic.
I have around 7 gallons of fuel thru mine now.
The first couple gallons was Wildcat 15% nitro and I still had unlimited verticle.
I hope this answers your questions.
Feel free to ask away any time!
Good luck!
JLK
Old 01-19-2006, 01:12 PM
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Jlkonn,
Thanks for the info! I am running 15% Omega, using Marvel air tool oil fro after run and turning a 15X6 MAS currently but will go to APC when the project is complete! Glad to hear the 100 works good on the plane and no major problems! I was looking at the horizon web site and Saw what I think you all were talking about! Vertical intake stack #SAI50K93 I hope is the right one! Ahh I need an High Speed needle valve extension anyway so I might just go ahead and order one...Just a little shy right now! I spent a ton at Tower Hobbies the other day for another receiver and Servo's and gear for my UCD..Oh well can't take it with you right! Ok well thanks for the info and if there is anything you think I can do with the 100 or the UCD let me know, all advise is greatly appreciated!

Chuck
Old 01-19-2006, 01:49 PM
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ORIGINAL: Thunderchild

Thanks Bill, good advice.

What HP does the 270 make?

Cameron (Thunderchild)

--------------


I once saw a 12' Telemaster fly. It was powered by a Saito 2.70 twin. The humongo Telemaster was owned by a friend named Fran Coneeny, in the Salem County R/C Club in Salem County, NJ.

The Saito 2.70 twin got lost on the nose of that huge Telemaster, but fly it it did. Very quiet engine too.
Old 01-19-2006, 02:15 PM
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I almost took the Velocity Stack off my .91 in disgust. Fresh fuel made me reconsider that opinion. I can get close to 11 minutes with my Funtana, where before I could only get 7 with a dead stick. It climbs faster than a throttle off down-line.
Old 01-19-2006, 02:21 PM
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I ran the .56 with a Graupner 12x6 on 10% fuel and a Fox Miracle plug, I wish had run it with and without the stack. It's obvious the 12x6 is not enough prop. The 1,700 rpm idle was not a keeper, it would idle well for about 30 seconds and then procede to miss a little and stop, raising it to 1,950 cured that.
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Old 01-19-2006, 02:48 PM
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All:
I just got off the phone with Horizon and I was going to order a velocity stack for my 100, they explained to me that Saito does not require them to go on this motor so thats why they are not Incorporated with the engine any longer!

Ok so no doubt guys it is a positive thing in most cases to help out maybe with economy and possibly idle to HP but I am reconsidering buying one if there is no need...Maybe I am wrong or maybe it is over kill to use one? The Tech told me they used to be needed on older saito engines due to the velocity of the wind around the carb intake, now the carb placement on the FA 100 is directly behind the piston/main body so maybe he is right? Heck I don't know but thought would pass this info on to all! Have fun and again this is just something i am passing on!

Chuck
Old 01-19-2006, 03:02 PM
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Hello; It is my understanding that the velocity stack on the carb is to contain the fog of mixture that is blown out the carb when the valve closes. It keeps the fog available for when the valve opens again. Without the stack, the fog will just be blown away and stick to your firewall, or otherwise not go into the engine. This will take advantage of fuel that you would otherwise lose.

Saito is right in saying that the velocity stack isn't needed, but it's a good idea for economy, and it will keep your firewall cleaner.
Old 01-19-2006, 03:19 PM
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Default RE: Welcome to Club SAITO !

Granted, the intake stack is not needed for the engine to run, and there is only a vanishingly small probability you''ll see any more power using one.

What you will see is a cleaner plane, and as much as 30% lower fuel consumption with no decrease in power.

Well worth the expense.

Bill.
Old 01-19-2006, 03:25 PM
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Gentleman,

I just wrote a note to Brenton (who by the way runs an incredible web site) with the following information.

The muffler thread size on the production run 125a engines is 13 x 1mm. The original preproduction protoypes had the 1/2 - 20 threads but that size did not make it to production.

Pete
Radio & Engine Category Manager
Horizon Hobby Inc.

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