Welcome to Club SAITO !
03-06-2020, 05:11 AM
Amen to that brother.
The airbleed screw is the horizontal screw, the hole at the right end of it is exposed/open to intake. at very low throttle. Consider it as a trim to compensate for changes in ambient temperatures, fuel differences, prop load etc.
About 85% of the throttle range's fuel flow is controlled by this slot on this early carb. This carb barrel does not move in and out.
The airbleed screw is the horizontal screw, the hole at the right end of it is exposed/open to intake. at very low throttle. Consider it as a trim to compensate for changes in ambient temperatures, fuel differences, prop load etc.
About 85% of the throttle range's fuel flow is controlled by this slot on this early carb. This carb barrel does not move in and out.
They also used a similar carb on early big block Saito engines and large twins. By rotating the collar, you could also adjust the mid range a bit. Had a SUPER, low idle on my old 120 Fathead single. Best Idle I have seen today, on a Saito anyhow. Transition was also excellent.
The variable width slot was also a part of Perry carbs IIRC. Cold start fuel circuit on Bing carbs as used with BMW motorcycles as well as the Solex carb on Triumph TRW motorcycles also uses the same type slot to enrich the mixture for starting.
Last edited by Jesse Open; 03-06-2020 at 05:13 AM.
03-06-2020, 07:37 AM
03-06-2020, 08:24 AM
03-06-2020, 08:26 AM
Yep, another way to look at it is that the airbleed screw is an adjustable vacuum leak at idle. The 2 needle carb and the airbleed carb both allow for creating a leaner air/fuel mixture at idle which is necessary to keep the engine from loading up on fuel. The 2 needle carb lsn adjusts fuel quantity whereas the airbleed carb adjusts air quantity. Same results, just a different way to get there.
Best answer ever.
Thanks Dewd!
03-06-2020, 10:43 AM
So driving through the KFC parking lot here in Iowa and seen a Oklahoma license plate.
Made me think of a little pink Saito 56 that’s down in that neck of the woods. I just couldn’t help but wonder how that little guy is getting along.
What say you OKC?
Made me think of a little pink Saito 56 that’s down in that neck of the woods. I just couldn’t help but wonder how that little guy is getting along.
What say you OKC?
03-06-2020, 10:48 AM
find myself doing that at major attractions like Yellowstone, devil’s tower, mount Rushmore and few other place I’ve been while everyone is stuck on the attraction I’m looking around to see what kind of crazy dude could be lurking about.
03-06-2020, 10:59 AM
Life has been getting in the way a lot lately. I have been working like mad and still have a business trip the week of 3/23. When I'm not working I have been playing taxi driver taking the wife to physical therapy and driving to Kansas to help out my son and his family. I hope to get back on the Pink N' Poke next month and get the covering started. I found a few errors on the part of the previous owner, some build steps left incomplete or skipped along with some hanger rash to fix. At leat the airplane was free!
03-06-2020, 11:01 AM
U and me both my fellow AmeriCAN!
03-06-2020, 11:53 AM
Yesterday I splurged and bought an ultrasonic cleaner to clean up the 90T and so far I’m impressed. I hear it works well on brass & gun parts too.
Another thing I haven’t seen in a glow engine before are oil rings around the main bearing. Huh!
Another thing I haven’t seen in a glow engine before are oil rings around the main bearing. Huh!
03-06-2020, 12:09 PM
03-06-2020, 04:40 PM
My Feedback: (102)
Join Date: Dec 2001
Location: Colonial Beach, VA
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Life has been getting in the way a lot lately. I have been working like mad and still have a business trip the week of 3/23. When I'm not working I have been playing taxi driver taking the wife to physical therapy and driving to Kansas to help out my son and his family. I hope to get back on the Pink N' Poke next month and get the covering started. I found a few errors on the part of the previous owner, some build steps left incomplete or skipped along with some hanger rash to fix. At leat the airplane was free!
The good word today is,
A little dust from the packing material, it was very well packed. It's wearing a Turbo Header that is out of sight.
the new Saito 100 GK arrived and it's beaut.
03-06-2020, 05:03 PM
Yeah Dave, the carb on mine is the one with the idle needle opposite the high speed needle. Thanks for the offer on the velocity stack, but I have a couple that will probably work from a GK (SAI50GK93). Besides keeping the fuel from spitting out the intake on the carb, what, if any, advantage is there when running a velocity stack?
03-06-2020, 05:10 PM
My Feedback: (102)
Join Date: Dec 2001
Location: Colonial Beach, VA
Posts: 20,370
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25 Posts
Yeah Dave, the carb on mine is the one with the idle needle opposite the high speed needle. Thanks for the offer on the velocity stack, but I have a couple that will probably work from a GK (SAI50GK93). Besides keeping the fuel from spitting out the intake on the carb, what, if any, advantage is there when running a velocity stack?
That's about it, the one you have will be fine with the 65. I just kinda get a kick out of makin them.
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acdii (03-07-2020)
03-06-2020, 08:24 PM
03-06-2020, 08:54 PM
Newly acquired Sig 4 Star 60 kit plane. It came with a Magnum fs91 but well, we can't have that now can we? It's now sport'n my newly rebuilt fa100 w/ apc 14x8. Coverite covering, Hitec HS635 2bb servos, AR5000 rx, 6v nimh battery and never flown for $75, couldn't pass it up!
Weedeater line throttle cable replaces golden rod cable. Works nicely and no fraying!
4 Star 60 kit with clipped wings (64-1/2" WS).
Weedeater line throttle cable replaces golden rod cable. Works nicely and no fraying!
4 Star 60 kit with clipped wings (64-1/2" WS).
Last edited by Glowgeek; 03-06-2020 at 09:05 PM.
03-06-2020, 09:27 PM
My Feedback: (1)
no-p she is yellow with the number 50 on it, click my link, you 's is going to go like a monster with the 125 in it, but be careful, maybe not tell Pete, he don't like the 125 LOL
Jim
Airborne-Models
Jim
Airborne-Models