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  • August 08, 2022, 02:05:14 AM

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Author Topic: Saito FA-50 prop size  (Read 3095 times)

Offline Craig Beck

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Saito FA-50 prop size
« on: April 29, 2017, 08:01:49 AM »
Im looking at using a Saito FA-50 for a control line engine.  What prop size do you think would work the best for this engine?

Offline Massimo Rimoldi

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Re: Saito FA-50 prop size
« Reply #1 on: April 29, 2017, 10:03:10 AM »
Good morning

I used SAITO FA-50 from '92 to '96
Propeller: 13x6 Merati made in Italy with thinned blades
Venturi: self built 6.9 mm diameter with Supertigre spraibar (4 mm.)
Fuel: 70% methanol-20% oil (All synthetic) -10% nitro
Plug: OS "F"
RPM 8000-8200

With this setup, the engine pulled a heavy 1900g (67 oz.) Model without any problems.
I am currently reading on this forum that many people use 20% of nitro, if I still use the 4T I would undoubtedly try this option.

I hope that this helps,    Massimo   

Offline Craig Beck

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Re: Saito FA-50 prop size
« Reply #2 on: April 29, 2017, 10:21:18 PM »
Thats a very good place for me to start. I really appreciate it.  My problem is i think a 13" prop my hit the ground during takeoff. I might need to stick with a 12" prop...

Offline Massimo Rimoldi

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Re: Saito FA-50 prop size
« Reply #3 on: April 30, 2017, 09:51:47 AM »
If the diameter is a problem you can use a three-blade propeller ......

Regards, Massimo

Offline Robert Zambelli

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Re: Saito FA-50 prop size
« Reply #4 on: May 04, 2017, 06:15:58 PM »
Massimo's suggestions are correct. I've used both 13-6 and 12-6 on my SAITO 50 with excellent results.

Don't hesitate to try a higher pitch. I've used as high as 8 but of course, it depends on the aircraft.

I've never used a three-blade propeller but I know some people who tried them and liked the performance.

The SAITO 50 is a very good engine and close in performance to the 56.

I never made a venturi for mine  - I just adjusted the throttle between 90 and 100% until I got what I wanted.

Bob Z.

Offline Craig Beck

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Re: Saito FA-50 prop size
« Reply #5 on: May 04, 2017, 07:26:22 PM »
I appreciate all the help guys. Im going to start with a 12x6 and go up from there.


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