Ernie Misner

Are you familiar with the low speed adjustment on the Saitos for break in? They come set from the factory WAY rich. (with the low speed needle head flush with the throttle arm)

Ernie

Test005

Ernie; Please enlighten me... In fact, I'd very much appreaciate any break-in info or Saito basics you can give me.

nitrobeast

Hey guys
Need a little tuning help. I picked up a used saito 82 which looks to be pretty new. Im using a 13x6 prop, cool power 10% fuel. I cant get a low realiable idle. I was getting about 10,200rpm on the high and then set it to 9800 because its cold here in NJ and figured i should richen it up a little. The throttle response in great but when i go to idle it drops to about 2400 rpm and then goes to about 3300rpm. Do you know if that means the low end it rich or lean? Could it be that its still not really broken in and thats why the idles like that?

Also wanted to mention that if i leaned the bottom more the transition wasnt as good

Thanks for the help

boogermancan

try a 14x6 mine idles well below 2000 1850 sounds nice but i will never go to 10000 more like 9200 on ground how ever i have a gk with a velocity stack in short it idles real well i have not had a 13x prop on it but if you must have 10 k on ground try a heavy brass prop nut to help with idle <edit have you made sure you dont have any air leaks >

WMB

My Feedback: (1)

That 13x6 is a great prop for a Saito 65. I broke-in my 82 in with a 13x7 APC. I needed to keep it very rich to keep from going over 10,500. I currently have a 12x9 APC, but it keeps pulling harder so I will switch to 12x10 in near flying future.
After ~ gallon, mine has reliable idle of 2100 rpm. Getting better all the time.

w8ye

My Feedback: (16)

Lighter props do not idle as well as heavy props or ones with more reactive centrifugal force

RC Specialties

To All,

I must report another great job of Saito support from Horizon. I developed a bad front bearing on my 1.80 and the leakage was bad. Since it was still under warranty, I packaged it up with a copy of my receipt and sent it off. I just didn't have the time to fix it. About a week later it came back good as new. They went through everything, replaced the bearings (as a courtesy), adjusted valves, and test run. Didn't cost a dime. You just don't see that everyday. Well done Horizon!

Note: The engine had 3 months left on the warranty.

Jim

swixtt

hey guys,
i'm back with another question. i'm sure this is in the forum somewhere in these pages... what size of 3 blade would you run on a 150? 16" seems like it would be the right size?
any thoughts would be great!

w8ye

My Feedback: (16)

The Saito 150 likes two blade props in the 15-7, 15-8, 16-6, to 16-8 and on a three blade you would want to drop an inch off the diameter
http://www3.towerhobbies.com/cgi-bin...?&I=LXRF49&P=7
http://www3.towerhobbies.com/cgi-bin...?&I=LXNGV2&P=7

swixtt

so i guess a 16x10 air screw is too big? i checked the manual and the prop range for a 2 blade is 15x8 to 18x6.

thanks

Ken6PPC

You could try a 16x10 3 blade prop, but I doubt the engine will be happy with that much load. It will probably have a slow spin up to speed.

w8ye

My Feedback: (16)

I run a APC 16-8 two blade on my Saito 150 and it loads it down pretty good. It turns in the 9200-9300 rpm range

Horizon also recommends a 16-8 two blade for the 180 and they say 9300 rpm. The biggest prop they recommend for the 180 is the 18-6

EDUAL777

I finally purchased my 1st 4stroke engine, a Saito 82. I will be installing it in a OMP Boxxer Biplane. The instructions state that for break in to not exceed 4k rpm for the 1st 10 minutes of operation. I've read and reread Bill Robison's sticky notes on 4 strokes. It sounds like he breaks in his new engines by advancing to full throttle for 5 seconds then retarding to idle for 20 seconds on a rich high end setting. I'm brand new to 4 strokes, have decent experience on 2 strokes. To me Bill sounds like an extremely knowledgable person but can someone perhaps clarify his break in procedure? I will be using Omega 25% fuel and a 14X6 S2 prop.

Thank you

w8ye

My Feedback: (16)

Some people are of the opinion that the engine should be run at different speeds for short periods during the break in to properly accomplish the task.

I like to do as the manual says for the first part of the run and then try to do as Wil Robson says

N1EDM

My Feedback: (2)

My Saito 82 came in a white box... how about those valve covers? Are they the gold anodized finish or is that just the way that the light hitting the chrome ones?

Bob

w8ye

My Feedback: (16)

I think the gold look of the valve covers is caused by incandescent lighting and because of the chrome, the color temperature correction system in the digital camera did not work correctly.

blw

My Feedback: (3)

I do both the way you describe Jim, and like Hobbsy does. The first 10 minutes below 4000, but close to it. The second tank is about 5500 but with a couple of blips to near wide open throttle to see how it runs. Third tank about 6500 with more short spells at WOT. Last tank around 7500 and holding it longer at WOT. I sometimes run a fifth tank with a lot of WOT and setting the needles. The bulk of the time is just keeping it at those RPM speeds, and watching the engine smooth out and fuel consumption closely.

Edual777- you are Saito club member #569.

BountyHunter51

I'm planning on putting my Saito 100 on an 84" Cub. I know that it's more motor than this plane needs, but I'll be doing some banner towing among other 'duties'. Or so the plan goes.
Can anyone recommend a prop for my set-up. Also, should I break it in with my intended prop?
Sorry for the dumb questions............Cheers! BH

w8ye

My Feedback: (16)

You didn't mention your intended prop

For banner towing, I would use a 15-6

BountyHunter51

Sorry w8ye,

15x6 MAS is what I have on hand and thought that it might be what would work. I guess that I'm just second guessing myself. Thanks for the input.

Cheers! BH

pub

couple questipms on a SAITO-FA50, would it be good on a SUKHOI .40 or KADET SENIOR. If so what would be a good price on a used well taken care of a FA-50. thanks pub

w8ye

My Feedback: (16)

A Saito 50 will fly these two planes very well. But there will not be an over abundance of power.

You can look in the RCUniverse Marketplace for a good idea of engine prices and availability.

The Saito 50 was made for over 15 years and there are a few variations in them. The early ones are more common than the later ones.

I have two earlier versions and they run very well as far as I'm concerned. I use one of them the most of all my engines.

overall, I have 23 Saito engines.

blw

My Feedback: (3)

BountyHunter51- glad to see you hanging out here. You are # 570. Hope you enjoy the engines

BountyHunter51

Thanks for the welcome, blw. I feel like I've finally 'graduated' now that I own a Saito, LOL. I can hardly wait to get the 100 flying. I'm as anxious as a new bride waiting for the reception to get over with. Great thread with tons of info and good folks!

Cheers! BH

Capt Lou

Ed:

The Saito manual describes the break in procedure you should use for their new engines. It is a 40 minute run time at various RPM's. I have followed this procedure on all my new engines with good success. His recommendation appears to follow the Saito procedure. As they say, "if works don't fix it".