Welcome to Club SAITO !
#8702
My Feedback: (2)
RE: Welcome to Club SAITO !
I just inherited a Great Planes Cub 40 (built from a kit) with a 77" wingspan.
Has anyone flown this on a Saito .56? I have a Saito .56 that I can put into this and would like to see what combination prop and engine (hopefully the .56 will fly it) that people are using.
Thanks for the heads-up. Looks like I had better start to order up some Cub wheels, huh?
Bob
Has anyone flown this on a Saito .56? I have a Saito .56 that I can put into this and would like to see what combination prop and engine (hopefully the .56 will fly it) that people are using.
Thanks for the heads-up. Looks like I had better start to order up some Cub wheels, huh?
Bob
#8703
My Feedback: (16)
RE: Welcome to Club SAITO !
The Saito 56 will have plenty of power in the Cub unless someone built it terribly heavy.
I had a Saito 50 in a H9 80" Cub and it had all kinds of power. Flew around at half throttle most of the time. I sold the Cub to a guy who put a 46FX in it. The engine had so much power that the engine wasn't reliable running that slow. So he put a late model 40LA in the Cub. It seems just right.
One thing I've done on a slow flying plane is to use a 12 1/4 X 3 3/4 prop. The engine will rev up pretty good but I just use ful power for initial take off.
I had a Saito 50 in a H9 80" Cub and it had all kinds of power. Flew around at half throttle most of the time. I sold the Cub to a guy who put a 46FX in it. The engine had so much power that the engine wasn't reliable running that slow. So he put a late model 40LA in the Cub. It seems just right.
One thing I've done on a slow flying plane is to use a 12 1/4 X 3 3/4 prop. The engine will rev up pretty good but I just use ful power for initial take off.
#8704
RE: Welcome to Club SAITO !
Well I maidened my Wm Super Chipmunk today powered by my rebuilt Saito FA-91S (new bearings, connecting rod, piston ring). Wow, what a difference from before! It ran smooth, idled nicely with good transition and NO TERRIBLE NOISES coming from the motor! I had a bit of a scare when I brought it in and saw a lot of oil on and around the cowl. But then I realized the nut holding the muffler pipe to the head had loosened. I retightened it and flew two more times. Great engine. Thanks for the great advice! BTW, the Super Chipmunk lands like a trainer with flaps deployed and just a bit of down elevator mixed in.
Marl
Marl
#8708
My Feedback: (2)
RE: Welcome to Club SAITO !
Thanks, Jim... I have one of those props that I'll try. I'm also going to try a 11x8 and a 12x7, as those are two props recommended by Saito. Whaddaya think the power would be with either of those? The RPM's will be down, compared to the 12-1/4 x 3-3/4 but I'm wondering if there would be a power increase.
Thanks again for that note,
Bob
Thanks again for that note,
Bob
#8710
RE: Welcome to Club SAITO !
Have a saito 125 with problems. It flew great for 8 or so flights today with good settings.....then on my last flight decided to die after TO. on the ground it idles fine.....but at FT it rpms....and dies. will restart, then do the same thing. I checked my lines and tank, and everything seems to be fine.
It has 7-8 gallons though it
It did seem a little slow with a apc 16x6. 8400 rpm @ 5000ft
Ideas????????????
Thanks
871
It has 7-8 gallons though it
It did seem a little slow with a apc 16x6. 8400 rpm @ 5000ft
Ideas????????????
Thanks
871
#8712
My Feedback: (3)
RE: Welcome to Club SAITO !
871,
That may be a bit too much prop for the 1.25. Look for high 9k with an APC 15x6. You may need to richen the HS needle valve setting a couple of clicks. Just noticed where you are.....maybe low 9K with that prop.
Bob,
An APC 12x8 should give you around 10,500 RPM on the .56. I've used something like a 11x7 in the past, but the RPMs were really up there and it didn't perform as well. The .56 is a fairly powerful engine. Mine is on a Sig Kavlier which may be weighing around 5 lbs. It sounds like you will like the larger prop more with your Cub.
That may be a bit too much prop for the 1.25. Look for high 9k with an APC 15x6. You may need to richen the HS needle valve setting a couple of clicks. Just noticed where you are.....maybe low 9K with that prop.
Bob,
An APC 12x8 should give you around 10,500 RPM on the .56. I've used something like a 11x7 in the past, but the RPMs were really up there and it didn't perform as well. The .56 is a fairly powerful engine. Mine is on a Sig Kavlier which may be weighing around 5 lbs. It sounds like you will like the larger prop more with your Cub.
#8713
My Feedback: (16)
RE: Welcome to Club SAITO !
For Ft Collins that rpm is not too bad.
Are your sure the temperature didn't get cooler later in the day? That will require you to enrichen the mixture to keep the engine running.
Edit: I see its cloudy there and there hasn't been much temperature drop
Are your sure the temperature didn't get cooler later in the day? That will require you to enrichen the mixture to keep the engine running.
Edit: I see its cloudy there and there hasn't been much temperature drop
#8714
My Feedback: (2)
RE: Welcome to Club SAITO !
Jim and blw, thanks for your opinions. I hope to have the Cub in a basic flyable shape in a couple of weeks. I have an 11x9 and a 12x7 on order - they were props that were recommended by Saito. I also have some 12x6's that I can play with as well. I presume that you have the valves set pretty closely for best power. Mine are, I used the celophane cigarette wrapper trick that I learned elsewhere on this forum.
Thanks again for the opinions. Good advice,
Bob
Thanks again for the opinions. Good advice,
Bob
#8715
RE: Welcome to Club SAITO !
ORIGINAL: Wing-Ding
But then I realized the nut holding the muffler pipe to the head had loosened. I retightened it and flew two more times.
Marl
But then I realized the nut holding the muffler pipe to the head had loosened. I retightened it and flew two more times.
Marl
#8716
My Feedback: (3)
RE: Welcome to Club SAITO !
Jim,
I meant low 9K with the 15x6. I thought the 16x6 sounded about right too for that altitude. I remember having to get carbs rejetted a long time ago for the Colorado Springs area when I lived there. The heat and altitude was tough on full scale flying.
I meant low 9K with the 15x6. I thought the 16x6 sounded about right too for that altitude. I remember having to get carbs rejetted a long time ago for the Colorado Springs area when I lived there. The heat and altitude was tough on full scale flying.
#8717
RE: Welcome to Club SAITO !
Here's one for the Saito Cognoscenti. I have an Ultra R/C Giles 202 with a 180 Saito in it. I've flown it around a bunch but the 17X6 APC prop was pulling too fast. Just a couple of clicks and it was flying, forget anything over half throttle! I just replaced the prop with a 17X4W APC and fired it up for the first time tonight. When I run it up and bring it back to idle, it pops out the exhaust- a backfire. Prior experience tells me that this is from fuel in the exhaust stream firing after the compression event. That would dicatate that it needed to be leaned out as the lower-pitched prop is loading the engine less than the other. I did lean out the needles a little but it still has a little bit of a pop, not as bad as before. Does this mean I should go more or is this just not enough prop for this engine? I don't want to harm the engine but flying with that other prop was just too much. Should I drop pitch but go up to an 18 inch prop? I should say that the engine appears to run great except for this pop which occurs only when the throttle is opened and closed briskly. Suggestions are welcome. Thanks in advance.
#8719
RE: Welcome to Club SAITO !
Yea, Co is great
The strange thing is It flew great all day, and with the same settings, the dying at full throttle just started out of knowhere.
Is there something that can commonly go out, or come loose, or start an air leak, out of the blue????
I was at 2.25 out on the HS
871
The strange thing is It flew great all day, and with the same settings, the dying at full throttle just started out of knowhere.
Is there something that can commonly go out, or come loose, or start an air leak, out of the blue????
I was at 2.25 out on the HS
871
#8721
RE: Welcome to Club SAITO !
ORIGINAL: w8ye
Needle settings vary from engine to engine.
What I was trying to say earlier, If the temperature drops a little, you are going to need to screw the needle valve out just a little. And vice-versa
Needle settings vary from engine to engine.
What I was trying to say earlier, If the temperature drops a little, you are going to need to screw the needle valve out just a little. And vice-versa
thanks
871
#8722
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Join Date: Dec 2001
Location: Colonial Beach, VA
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RE: Welcome to Club SAITO !
Show, lose the turns count and set the engine to run best each time you fly, counting turns is iffy even as a starting point from engine to engine on the same make.
#8725
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RE: Welcome to Club SAITO !
Hi Fellows!
What's the best APC prop for a FA 82. I want to try some 3D. The plane weighs just under 6 lbs. I had a YS.63 in it until now and it just wasn't quite enough. I hope it will hover now with the FA-82.
Thanks
What's the best APC prop for a FA 82. I want to try some 3D. The plane weighs just under 6 lbs. I had a YS.63 in it until now and it just wasn't quite enough. I hope it will hover now with the FA-82.
Thanks