Welcome to Club SAITO !
#4651
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RE: Welcome to Club SAITO !
Mike:
I mentioned OS as a joke responding to JettPilot’s post, and Bruce went off. Delete all the OS posts, if you have “Mod Power” here. Or maybe W8YE Jim will do it for us.
Bill.
I mentioned OS as a joke responding to JettPilot’s post, and Bruce went off. Delete all the OS posts, if you have “Mod Power” here. Or maybe W8YE Jim will do it for us.
Bill.
#4652
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RE: Welcome to Club SAITO !
Bought my third Saito today--another FA82a. I now have some "off brand" 2 and 4 stroke engines for sale--except for my OS--EEK!---I said it---Wankel.
I also have a 40" DR.1 project in mind for my FA30. Any new tips or tips posted in the past will be appreciated.
I also have a 40" DR.1 project in mind for my FA30. Any new tips or tips posted in the past will be appreciated.
#4653
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RE: Welcome to Club SAITO !
Mike:
I mentioned OS as a joke responding to JettPilot’s post, and Bruce went off. Delete all the OS posts, if you have “Mod Power” here. Or maybe W8YE Jim will do it for us.
Bill.
PS: Sorry, I just thought I had forgotten to copy this one from my editor, didn't realize the deletions had been done. Kill this and the following post too, please. wr.
PPS:Bruce, $25 isn't an offer. $75 might be. try it. Money and ghe mouth, remember. wr.
I mentioned OS as a joke responding to JettPilot’s post, and Bruce went off. Delete all the OS posts, if you have “Mod Power” here. Or maybe W8YE Jim will do it for us.
Bill.
PS: Sorry, I just thought I had forgotten to copy this one from my editor, didn't realize the deletions had been done. Kill this and the following post too, please. wr.
PPS:Bruce, $25 isn't an offer. $75 might be. try it. Money and ghe mouth, remember. wr.
#4654
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RE: Welcome to Club SAITO !
And you will notice that Willie was deleted too. Seems only fair seeing as you can't tell when he's "joking" and when he's not. See post 8486. Oh and Bruce didn't "go off". And the offer still stands, 25 bucks. You should be happy to get rid of it.
#4655
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RE: Welcome to Club SAITO !
ORIGINAL: William Robison
Al:
“Methinks he doth protest too much.” I didn’t think your sound files would do any good beyond confirming detonation or preignition. But what I heard was just the different noise of two brands of propellors. Not to worry about. Put a MAS on and it will sound a lot like the TopFlite wood, a Zinger will be closer to the APC.
What I did hear to worry about was the uneven RPM at full throttle, as though there was a tendency to go lean. This most likely is just due to the remaining stiffness of the engine – not yet fully run in.
All in all, I’d say just enjoy the engine, ignore the noise when you’re running the TopFlite props.
Bill.
Al:
“Methinks he doth protest too much.” I didn’t think your sound files would do any good beyond confirming detonation or preignition. But what I heard was just the different noise of two brands of propellors. Not to worry about. Put a MAS on and it will sound a lot like the TopFlite wood, a Zinger will be closer to the APC.
What I did hear to worry about was the uneven RPM at full throttle, as though there was a tendency to go lean. This most likely is just due to the remaining stiffness of the engine – not yet fully run in.
All in all, I’d say just enjoy the engine, ignore the noise when you’re running the TopFlite props.
Bill.
I appreciate you lending me your ear. The knock is more pronounced in person then as heard in the MP3. And I never would have guessed it to be the prop. To me it is objectionable since I really like the sound of a 4-stroke and the Top Flight takes something away from that. So I think I will try some other props. I know the uneven RPM at full throttle requires some mixture changes, then I am sure the MP3 will make the top 10 on the Saito Billboard list.
Thanks again
Al
#4656
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RE: Welcome to Club SAITO !
ORIGINAL: scratchonly
Clarence Lee recommends dribbling some fuel injector cleaner into the carb while the engine is running to clear carbon deposits. What do you think? Has anyone tried this?
Clarence Lee recommends dribbling some fuel injector cleaner into the carb while the engine is running to clear carbon deposits. What do you think? Has anyone tried this?
#4657
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RE: Welcome to Club SAITO !
ORIGINAL: William Robison
JP:
The only good reason I’ve found for kicking someone out of Club Saito is owning an OS engine. But if I were to enforce that I’d have to kick myself out too – I still have four of the &*^ things.
Huck:
The $100 offer still stands, and I do think it can be fixed for a reasonable price.
Bill.
JP:
The only good reason I’ve found for kicking someone out of Club Saito is owning an OS engine. But if I were to enforce that I’d have to kick myself out too – I still have four of the &*^ things.
Huck:
The $100 offer still stands, and I do think it can be fixed for a reasonable price.
Bill.
--------------------
Every time I read this column in the past, I kept getting a strangely familiar feeling. I finally figured out what it was.
I worked as an auto mechanic at a local garage before attending electronics school in the early Seventies. That was where I worked on my first VW Beetle. Being used to working on American cars only, I was caught by surprise by the fact that Volkswagen didn't make only yearly changes, but they also made a change whenever they felt like it. You had to be cognizant of this fact or you could strand some poor woman on the Beltway around Washington, D.C by using the wrong set of points that eventually shorted out and killed the engine. Talk about feeling like a complete idiot!
Anyway, it is good that they make the changes when the need is recognized.
Oh, I just noticed that Horizon Hobby's owners are opting out and are offering the company to their employees, as the Tower folks just did. Strange Days we live in.
#4658
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RE: Welcome to Club SAITO !
Mike (and others):
Injector cleaner? Some of them actually work, but they have to be used in a pressure bottle and fed into the fuel system in place of the normal gasoline feed to work effectively. And far more injection system “Cleanings” are sold at $100 a pop than are needed. “Doesn’t that sound a lot better?” asks the garage man. With some high grade lab instruments you might notice a difference. The real change is your wallet being $100 lighter. A really high mileage car that has spent its life in town on cheap gas might be helped, but for the average car it’s a waste of money.
About 20 or 25 years back we were having problems with deposits on the intake valve stems of the four cylinder BMW engines. No chemical cleaner was found that would work satisfactorily, we ended making a portable blasting machine. Pulled the intake manifold off, then using walnut shells as media we could clean the valve stems.
Injector cleaner, as sold by the average shop, is little more than snake oil. But there are times when it does work, and makes a difference. It does not work for heavy deposits, and it has to be run through the fuel system in place of gasoline, as I said before.
With all this in mind I tend to think it would be snake oil for a model engine too, but if Clarence Lee says it works give it a shot. At worst it’ll just put more carbon deposits in the engine. I can’t see it doing any real harm.
Bill.
Injector cleaner? Some of them actually work, but they have to be used in a pressure bottle and fed into the fuel system in place of the normal gasoline feed to work effectively. And far more injection system “Cleanings” are sold at $100 a pop than are needed. “Doesn’t that sound a lot better?” asks the garage man. With some high grade lab instruments you might notice a difference. The real change is your wallet being $100 lighter. A really high mileage car that has spent its life in town on cheap gas might be helped, but for the average car it’s a waste of money.
About 20 or 25 years back we were having problems with deposits on the intake valve stems of the four cylinder BMW engines. No chemical cleaner was found that would work satisfactorily, we ended making a portable blasting machine. Pulled the intake manifold off, then using walnut shells as media we could clean the valve stems.
Injector cleaner, as sold by the average shop, is little more than snake oil. But there are times when it does work, and makes a difference. It does not work for heavy deposits, and it has to be run through the fuel system in place of gasoline, as I said before.
With all this in mind I tend to think it would be snake oil for a model engine too, but if Clarence Lee says it works give it a shot. At worst it’ll just put more carbon deposits in the engine. I can’t see it doing any real harm.
Bill.
#4660
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RE: Welcome to Club SAITO !
Mike:
When the FA-125 hit the market we had a discussion about the lack of a spring on the throttle barrel. As memory serves, it was Hobbsy who first mentioned it.
At that time I said it would seem to be proof of the excellent machine work done by Saito, allowing the fit of the barrel guide pin to be good enough to prevent barrel end play and the consequent mixture variation.
After consideration I changed my view. There if, after all, always wear between two surfaces rubbing. When the wear has loosened the match the mixture variations will show up. An added spring will slow the wear by preventing the barrel from hammering on the pin from normal vibration, I think a spring should be added before the wear becomes excessive.
I do not have an FA-125 yet, so I don’t know if one can be fitted easily. I do have one on the way, when it gets here I’ll check, and report.
Bill.
When the FA-125 hit the market we had a discussion about the lack of a spring on the throttle barrel. As memory serves, it was Hobbsy who first mentioned it.
At that time I said it would seem to be proof of the excellent machine work done by Saito, allowing the fit of the barrel guide pin to be good enough to prevent barrel end play and the consequent mixture variation.
After consideration I changed my view. There if, after all, always wear between two surfaces rubbing. When the wear has loosened the match the mixture variations will show up. An added spring will slow the wear by preventing the barrel from hammering on the pin from normal vibration, I think a spring should be added before the wear becomes excessive.
I do not have an FA-125 yet, so I don’t know if one can be fitted easily. I do have one on the way, when it gets here I’ll check, and report.
Bill.
#4661
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RE: Welcome to Club SAITO !
I just bought a SA90R3 as being new in box. I saw no reason to think otherwise of the purchase.
But the first thing I noticed was the lack of a barrel spring. It shows a spring on the Horizon parts site but there wasn't a spring in my carburetor. The engine appears to be four or five years old. Right now the fit is tight enough that the mixture regulation would not be significantly bothered but I don't know about in the future. I'll get a spring for it on my next order to Horizon.
But the first thing I noticed was the lack of a barrel spring. It shows a spring on the Horizon parts site but there wasn't a spring in my carburetor. The engine appears to be four or five years old. Right now the fit is tight enough that the mixture regulation would not be significantly bothered but I don't know about in the future. I'll get a spring for it on my next order to Horizon.
#4662
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RE: Welcome to Club SAITO !
ORIGINAL: William Robison
I do not have an FA-125 yet, so I don’t know if one can be fitted easily. I do have one on the way, when it gets here I’ll check, and report.
Bill.
[/b]
I do not have an FA-125 yet, so I don’t know if one can be fitted easily. I do have one on the way, when it gets here I’ll check, and report.
Bill.
[/b]
#4663
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RE: Welcome to Club SAITO !
Mike,
If you remove your carb barrel and look on the back side... If it has a recess for the spring, the 91 spring should work fine.
The 100 uses the same spring as the 91.
You can look at the picture of the 100 barrel in the parts section at the Horizon site and see the recess I'm talking about. On the 125 parts, they show the other end of the barrel.
If you remove your carb barrel and look on the back side... If it has a recess for the spring, the 91 spring should work fine.
The 100 uses the same spring as the 91.
You can look at the picture of the 100 barrel in the parts section at the Horizon site and see the recess I'm talking about. On the 125 parts, they show the other end of the barrel.
#4665
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RE: Welcome to Club SAITO !
There's no need for loctite.
There's just the retainer screw that goes in the barrel cam slot.
This hex head screw has a lock washer underneath it.
It takes a 4mm wrench to fit the head of the screw.
When you are re-assembling the screw, you must align the slot with the screw to get it back together correctly.
The 125 uses the same spray bar as the 91 so I'm sure the 91 spring will work.
There's just the retainer screw that goes in the barrel cam slot.
This hex head screw has a lock washer underneath it.
It takes a 4mm wrench to fit the head of the screw.
When you are re-assembling the screw, you must align the slot with the screw to get it back together correctly.
The 125 uses the same spray bar as the 91 so I'm sure the 91 spring will work.
#4670
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RE: Welcome to Club SAITO !
I found a slightly cheaper set meant for the FA-100 http://www.horizonhobby.com/Products...dID=SAI100TI90 I suppose it is the same spring for the FA-91, and that it will work with the FA-125?
#4671
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RE: Welcome to Club SAITO !
I agree with Jim, the big end fits over the phlange on the spray bar and logic says the small end should contact the hardest metal surface since the spring is not going to rotate with the barrel.
Mike, neither my 1.25 nor my 2.20 came with the barrel springs. I ordered the larger carb for the 2.20 and it had no barrel spring either. I don't see that as a concern.
Mike, neither my 1.25 nor my 2.20 came with the barrel springs. I ordered the larger carb for the 2.20 and it had no barrel spring either. I don't see that as a concern.
#4672
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RE: Welcome to Club SAITO !
Hi Hobbsy, given that the carb machining tolerances are the same, I find it hard to understand why Saito includes the carb spring in some and leaves it out in the others. I find that the slight spring tension in the carb barrel helps to minimise any effects of backlash in the throttle linkange/servo, and that helps to keep a consistent idle speed. Of course, some have mentioned the possibility of "chattering" wear in the barrel assembly.
#4673
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RE: Welcome to Club SAITO !
Greetings All, I've come across a Saito 45, guess there were a couple/three version and don't know which one mine is.
The engine has all the appearances of being in excellent condition.
So I've installed it in a Taube and the fuel inlet nipple is so close to the firewall that it'd be a real pain to fuel this up.
I will not use a tee! I don't want to move the engine forward.
I'm not aware of any 90 degree nipples but could be wrong.
I’ll just bet that if I heated the nipple with a torch and tried to bend it maybe 30 degrees, I’d break it, so very reluctant to try that.
What are my options??
Your thoughts/suggestions very much appreciated.
Thanks,
Ray
The engine has all the appearances of being in excellent condition.
So I've installed it in a Taube and the fuel inlet nipple is so close to the firewall that it'd be a real pain to fuel this up.
I will not use a tee! I don't want to move the engine forward.
I'm not aware of any 90 degree nipples but could be wrong.
I’ll just bet that if I heated the nipple with a torch and tried to bend it maybe 30 degrees, I’d break it, so very reluctant to try that.
What are my options??
Your thoughts/suggestions very much appreciated.
Thanks,
Ray
#4674
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RE: Welcome to Club SAITO !
Hello; I had a look at my Saito 45s and I think that the collar that the fuel nipple attaches to will rotate. Loosen off the nut that is closest to the niple and see if you can twist the nipple to where you want it. The reason I think that the collar will turn is; each of my 45's carb nipple is in a slightly different position. If you have the 45s then the nipple points straight up, and can't be moved, it has the same carb as the later 50's and 56's. You can always cut the fuel pressure line and put a piece of brass tubing in the joint where you can get at it easily.
#4675
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RE: Welcome to Club SAITO !
donkey doctor, Just went back and took another look at my 45, son of a gun, there is a nut there and it holds the needle valve tension spring in place. Perhaps by loosening that I'll be able to rotate the nipple into an upright position. Will give it a try shortly.
Wonder how I can tell what model 45 mine is, any idea??
Many Thanks, sure hope this works,
Ray
Wonder how I can tell what model 45 mine is, any idea??
Many Thanks, sure hope this works,
Ray