Hibrass

My Feedback: (1)

Good Day!!!!!

I just scored two nearly new Saito's! An early 120 that doesn't look as if it has ever been run.... And a never started 180!!!! The only thing on the 180 has some dry rusty bearings.... So it looks like I will have to attempt my first bearing replacement... All in All a good day! ;-)

Hibrass

mobyal

RVM and Jim --
Thanks for the prompt and helpful responses. What you all say makes a lot of sense. I've been priming the engine by opening the throttle to full and running the starter for a few seconds. I'll stop that, clear by removing the plug, turn the idle screw in (clockwise, right?) and prime by opening the throttle and turning the prop through by hand two or three times.
Thanks again!
Al

Hobbsy

My Feedback: (102)

The first 10 minutes should be with the throttle 1/4 to 1/3 open at 4,000 rpm not full throttle, 4,000 at full throttle and extremely rich simply makes the engine run stone cold with no chance to break in. Set the HS needle at about 3 turns open and start over, you'll get much better results.

RC Specialties

Hobbsy,

That's good news. It confirms my findings as well. It is going to production this month.

Jim

mobyal

Thanks.
It'll be Saturday before I can try again. I'll let you guys know how it works out.
Al

blw

My Feedback: (3)

mobyal- you are member #528

thrashin

Hi All,

Can anyone help me with my queries? I'd appreciate a response... my FA-80 sits in parts awaiting assembly!

Cheers and thanks in advance.

RVM

How much runtime on a new Saito is generally required for the valves to fully seat (no leak)?

P47 Jug - Al

My Feedback: (1)

Hobbsy, thanks for the reply. Then when you adjust the low end, are you cutting throttle back and adjust low end for best idle.... cut back throttle some more and adjust low end again for best idle? Something like that?

What I was doing was:
1) turn in the low end
2) adjust throttle for the slowest RPM
3) Throttle up and if I had a good transition, I went back to step one.
When the engine quit upon power up, I richened a little and stopped when had a good transition. That's when I discovered what I posted originally.

Hobbsy

My Feedback: (102)

None, they do not leak from minute one.

jdr43

Hi all, I just finished breaking in my new FA 62a and it ran great on an APC 12-6. Here is the bird I'm going to but it in, I'm just about ready for the maiden flight.
Jim R Saito Club Member # 510

P47 Jug - Al

My Feedback: (1)

Looks good Jim. Let us lnow how it flies.

Al

blw

My Feedback: (3)

P47 Jug-Al,

I think you are making it more difficult than it needs to be from what you wrote. Peak your high speed and leave it peaked at the best RPMs you can get. Adjust the low speed at something like 1/8 of a turn at a time. Slowly advance the throttle and see if it will take it. If so, do it again a bit faster and see if it transitions smoothly. Repeat this process until you think you have gone past the last adjustment where it advanced smoothly. Richen it back to where you had it and check. Once that is good, peak your high speed and richen it at least 300 RPMs.

P47 Jug - Al

My Feedback: (1)

blw,

I think what you describe is what I did, more or less. What I noticed and was looking for was an understanding of was how the engine behaved. Specifically I had good transition to full power. However, it took 10 / 15 seconds at idle until the RPM finally dropped from the high idle (4000 RPM) to a decent idle around 2300 RPM. I slightly richened the low end and now the idle comes down right away to 2300. So my question really is to gain an understanding of the characteristics or behavior of the Saito as it is coming into proper tuning. So I guess what I described above is normal and I am just trying to understand why. Why did it take 10-15 seconds to settle down to 2300 RPM? I guess the answer is that even though I had great transition to full power, because it took 15 seconds to settle down to 2300 once the throttle came back to idle position, is really a NORMAL characteristic on a slightly too lean on the low end engine. Does that sound like a good explanation?

RVM

Interesting. Must be something I am using/doing then. All of mine have had leaks from the valves in some form or another, except for my .91. Two .82s and a 1.00. The 1.00 is pretty mild compared to the rest though.

alfredbmor

Hi:
since I am flying from a very dust place (desert) I d' like to know if the use of a Brue line Air filter could protect my Saito engines, if so I also would like to know if I have to pay the price with power loss of the engine.
Thanks.

TimC

alfredbmor, here's a stack/filter test I did with my .82 some time back: [link=http://www.rcuniverse.com/forum/m_4280741/anchors_4280741/mpage_1/key_BruLine/anchor/tm.htm#4280741]Stack/Filter Test[/link]

alfredbmor

Tim I appreciate your prompt answer and valuable info, I can see that there is no much power loss using this brueline filter, are you still using this kind of filters or do you think that they are not necessary because of the typical lifespan of our engines?
Thank you.

TimC

alfred, I'm still using the filters on some of my engines. I fly off a dusty dry lake mostly and think the filter might help extend the life of the engine. If for some reason I was going to race with a Saito, the filter would come off.

alfredbmor

Tim:
Thanks again.
Yesterday I ordered two brueline fine filters for two of my saitos (.82 and .91) I wanted to know about experiences about these type of filters and also wanted to know how much rev could I lost using them, you have provided me with accurate info (Tested) and now I am more confident to use them soon I will be ordering more brueline filters for the rest of my saito engines. Here at the desert the dust com into the engines easily so I think that the use of these filters is a must.

gjeffers

just make sure you race away from those highline wires Tim

after i get settled in here Tim ill take some time and come down and maybe race ya

TimC

Gary, them power lines are so powerful, I can make a close pass and re-charge my battery. To keep this about Saitos, that Poke is powered by a .40. What a good little engine that is.

RC Specialties

Here are some pics of a new exhaust system for my 1.00 installed on a Hanger 9 Spitfire. The 90 degree adapter came out really nice.

Jim

RVM

Very nice. How does this exhaust compare to your Turbo Header? I'm guessing it's got a different design goal... maybe space saver?

RC Specialties

RVM,

It is strictly designed to fit in close quarters. As opposed to the TurboHeader which increases performance as well. The 90 is very snug to the engine, as you can see in the pic.

Jim