w8ye

My Feedback: (16)

This goes along with my experience

TCraft Lover

My Feedback: (1)

Hey Tony,
Good to hear you're still using your 1.25. I've pretty much settled on the MA15-8 for my Edge. Seems to give me the most pull at take off and for hovering which I'm still trying to improve on.I checked the valve/tappet clearance this morning and found it to be .0065 to .007 on both intake and exhaust so Iset them both to .003 clearance. I have no idea what, if any, difference this might make in the motors performance. I am wondering what difference there might be between APC 15-8 and MA 15-8. I guess I'm not willing to spend the money on test props since I already have several that don't meet my needs.Good Luck!
Dave

w8ye

My Feedback: (16)

I run 16 X 6 and 17 X 4W depending on the plane

my 125's when new I ran a 15 X 6 on them for the first couple gallons. They wanted to run hot at first on a 15 X 8

I have three 125's and two FG-20's

I have some planes that I may have to use a 14 X 10 or 15 X 8 on though in the future

Saito 125 old and new compared








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ton2di

My Feedback: (182)

I'm starting to doubt my saito 125. I have been running an apc 15x8/14x10 on my h-9 p-51 and my friend flying his new h-9 p-47 with an OS 110FS-a with the same prop/fuel combo. (15x8 apc) with 15% omega is a bit faster than mine. For some reason even if our rpms on the ground are almost identical (8,700 on the ground- because of humidity) his engine will slightly unload more in the air ... I don't know the reason for this, but I'm thinking that his OS FSA110 engine has more power than my saito 125.

airraptor

My Feedback: (66)

ton2di are you running the muffler on the saito? Also you cant compare speed on a different plane. With no muffler you can expect about 300-400 more rpm on the Saito. All saito engines respond best with more nitro. I usualy run 35-45% in mine. 20% nitro is the lower limit to me for the Saito's. My Saito 125 on 45% is very close in power to the OS120AX with muffler both will spin a 13x11 APC at 11,300

Also run the 15% powermaster fuel i dont think omega is that great of a fuel could be wrong if your going to run 15%.

ton2di

My Feedback: (182)

Thanks for the advice airraptor. I will try a 30% fuel this weekend and see if there's a speed improvement... or if I could fly faster than the os 110 with a 15x8.

thanks,
ton2di

jriley1974

Going to maiden my H9 p-47 with APC 15x8 (Omega 15%). Engine has about 5 tanks through it on the ground. Any prop advise? Would a 15x7 be better for its first flight?

ton2di

My Feedback: (182)

Jriley1974,

Apc 15x8 should be fine. THat plane is very forgiving and is fun to fly. MAke sure you lean the low end needle after break-in because it will consume a lot of glow fuel at the original setting.

ton2di

mike early

I really like the 14x9 3-blade with my 125 on warbirds....

GoNavy

My Feedback: (15)

I realize this thread is old, but I found the results interesting and thought others might be interested in the results I had with the Saito 125. 65 degrees, 1450 feet asl, 15% nitro Wildcat Premium with 16% oil, after 80 ounces and about 90 minutes breakin. All readings rounded down to nearest 100; Static testing.

Zinger wood 16 x 6, 8500 rpm
Master Airscrew 4 cycle 16 x 6, 8500
Master Airscrew 4 cycle 16 x 8, 8400
APC 16 x 8, 8500
Zinger wood 16 x 6-10, 7300
Zinger wood 16 x 4 three blade, 8500

I did not expect the engine to do so well on 16-8's; Like W8ye I thought they would have been too much. (I calculate that the load of a 16 x 8 to be 133% the load of a 16 x 6 of the same design).
I want to run three bladers on a scale model, and 17inch diameter would be scale. Looks to me like I can go to a 16 x 5 or 17 x 4 three blade and still be within the engine's comfort zone.

I'm impressed with the Saito 125.

Reliable idle was 2100 except APC @ 1900. I have not touched the low speed setting; transition was flawless

ton2di

My Feedback: (182)

Hello,

What pane do you intend to put it in?

Ton2di

GoNavy

My Feedback: (15)

Twin Otter, 1/6th scale by John LaBelle, 132" wingspan, about 38 pounds.

kochj

Reactor bipe
20/20 YS fuel..
Master Airscrew 15x7 3-Blade don't have Rpms....
Pleased to say, the prop performed almost as my MA smintor 16x6 2-blade....
I had broke my other prop and wanted to fly...so I placed the 3 blade on it...
The MA 3 blade instructions says to NOT do violen snaps ect... with this prop on the engine...
I did some anyway....no issues.... ran out of gas and the gear needs reapair....

GoNavy

My Feedback: (15)

I ran the second Saito 125, on 15%, at 49 degrees, with same props as first engine turning about 100 rpms less than first engine at 65 degrees. Also ran the following:
17 x 6 Xoar wood two blade, 8200 rpm
15 x 7 MAS three blade, 8700 rpm
16 x 8 Zinger wood two blade, 7600 rpm

(Aside: the Xoar prop was a thing of beauty; it is the only prop I have ever had that came balanced, both tip to tip and hub to hub, out of the box.)

Jesse Open