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Old 10-13-2012, 12:03 PM
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ORIGINAL: blw

Mine from HF is okay. I think you get he luck of the draw. Someone posted abpout their $100 3 jaw puller from NAPA and it was about the same thing. I would have gotten that mismarked Sear's one for sure.

They are normally $69.99 from Sears on-line. I don't know what my local Sears store was doing W/that 1 in stock, but I did them a favor & took iy off their hands because I'm just a nice guy I guess.[:@].
Old 10-13-2012, 12:20 PM
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kenh3497, from my own research the only differences between the first and second gen Saitos are brass inserts for the valve seats and a new cam "Quiet" profile that apparently slows the initial climb rate on the leading edge of the cam lobe.

Easiest determination is the first gen has the metal throttle arm and the smaller diameter end inlet muffler, but the new plastic arms and new gen side inlet mufflers are a direct swap and not always a good indication you have the later version.

Other than that, the 120 was built on the 150 case and is relatively bulky and heavy for it's size. The 125a was built on the 100 case and is stronger, lighter and smaller. If anything, like every other Saito I have experience with, your 120 should still be a great performer.

As for the link to the puller, that was the only one I could find in short order. If I get the opportunity I will check to see if there is a P/N on mine.
Old 10-13-2012, 12:40 PM
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ORIGINAL: kenh3497

I just acquired a Saito FA120 along with a Carl Goldberg Monster Pitts. Beings I'm kind of a motor head... has anybody done any performance mods to a 120 like different cam from a newer engine or increase compression ratio or the like.

Thanks!

Ken
I put a 180 rotating assembly & top end on a 150 case W/good results.

[youtube]http://www.youtube.com/watch?v=5xaiAR8Yelc[/youtube]


[link=http://www.rcuniverse.com/forum/m_11170233/anchors_11170233/mpage_1/key_/anchor/tm.htm#11170233]HERE IS THE THREAD.[/link]

You might be able to do the same thing W/the 120 as the same parts that the 180 shares W/the 150 are common W/the 120. The cam, lifters, pushrods, cam housing, rockers, springs, keepers, bearings, prop hub, collet, prop nuts/washer, exhaust pipe & intake manifold threads are all the same)

If the 120 case is not large enough on the bottom to house the longer 180 stroke, a 150 ratating assembly & top end might be emplyed W simliar benefits..

If you break down the engine & get some measurements, perhaps I can determnie what will work on your 120 case.

Be forwarned that a high compression big block Saito single can be a bear to live W/on glow ignition. A CDI system will improve user friendliness tremendously on a hot rod high compression Saito big block single.

On a bone stock Saito, CDI alone gives a nice performance boost, increases fuel economy by as much as 25% & makes even the stock engine a lot more user friondly
Old 10-13-2012, 12:43 PM
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ORIGINAL: Cougar429

kenh3497, from my own research the only differences between the first and second gen Saitos are brass inserts for the valve seats and a new cam ''Quiet'' profile that apparently slows the initial climb rate on the leading edge of the cam lobe.

Easiest determination is the first gen has the metal throttle arm and the smaller diameter end inlet muffler, but the new plastic arms and new gen side inlet mufflers are a direct swap and not always a good indication you have the later version.

If he has the 1st gen cam, I would not swap it out. Faster opening rates on the cam lobes = more torque.
Old 10-13-2012, 01:22 PM
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From the description provided I think I have a first gen engine, metal throttle arm, back plate only case vent, but don't know about the exhaust as I'm still a bit "ignorant" to all the tics and pops of the Saito line.

Would there be any advantage to drilling and tapping the valve covers when running the engine inverted or for that matter upright for oil recovery? How about that same line back to the intake manifold to aid in pulling oil through the motor? I assume a check valve would be a good thing to use at the back plate and valve cover location.

Ken
Old 10-13-2012, 01:28 PM
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Ken, does it have a letter designator on the right lug, that will come closer to telling you when it was made. My very first gen 1.50 has no letter on the right lug nor does my first gen .80.
Old 10-13-2012, 01:53 PM
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ORIGINAL: kenh3497


Would there be any advantage to drilling and tapping the valve covers when running the engine inverted or for that matter upright for oil recovery? How about that same line back to the intake manifold to aid in pulling oil through the motor? I assume a check valve would be a good thing to use at the back plate and valve cover location.

Ken
[link=http://www.rcuniverse.com/forum/m_11170233/mpage_1/key_/tm.htm]GO TO POST#42 IN THIS THREAD[/link] for some experiments on that subject.

An inlet checkvalve on the back plate W/breather nipples on the rocker covers plumbed to a "Y" fitting W/an outlet checkvalve will accomplish what you are seeking.

In addition, you can run the crankcase pressure to a bleed-off regulator to pressurize the fuel tank. That will allow you to pump fuel from a remotely located tank over the CG.
Old 10-13-2012, 05:25 PM
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ORIGINAL: Hobbsy

Ken, does it have a letter designator on the right lug, that will come closer to telling you when it was made. My very first gen 1.50 has no letter on the right lug nor does my first gen .80.

It has a letter "F" on the lug.

Old 10-13-2012, 06:38 PM
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What does the group feel is a good fuel mix of nitro/oil for a Satio 180 would a low nitro ( 5% )be any better than say a higher ( 15 % ) mix.
Thanks
Old 10-13-2012, 10:09 PM
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I run 10% in everything now but if you are looking for the last few hundred rpm you will run higher.Remember that you will need a bigger fuel tank if you do.My 220 is a lot thirstier on 25%
Old 10-14-2012, 04:06 AM
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Doug, all Saitos except the little .30 run perfectly on 5%, many of our European friends and others run no nitro with no problem. If you get the LS needle set correctly the 1.80 will be fairly frugal on the 5% and will have a smooth, softer idle than if on more nitro.
Old 10-14-2012, 04:52 AM
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ORIGINAL: Hobbsy

Doug, all Saitos except the little .30 run perfectly on 5%, many of our European friends and others run no nitro with no problem. If you get the LS needle set correctly the 1.80 will be fairly frugal on the 5% and will have a smooth, softer idle than if on more nitro.
Thanks for the info, I'll give the 5% a try but what about oil contenr, is 18% enough?
Old 10-14-2012, 06:34 AM
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Yes, 18% is enough. Having a small percentage of castor is desirable. It will run fine without it.
Old 10-14-2012, 12:38 PM
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Is there any loss in power at WOT when you run at 5% nitro instead of 15%? I never measured.
Old 10-14-2012, 01:58 PM
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Ballpark loss- maybe 200 rpm. 300 tops.
Old 10-14-2012, 02:06 PM
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ORIGINAL: hsukaria

Is there any loss in power at WOT when you run at 5% nitro instead of 15%? I never measured.

Power loss would only be a concern if your WOT power was marginal in the 1st place.

If you aircraft will fly well @ 1/2 throttle then then loosing 200-300 RPM @ WOT shouldn't be an issue.
Old 10-14-2012, 04:35 PM
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Yeah, 300 rpm for an overpowered plane is a non-issue.
Old 10-14-2012, 05:01 PM
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ORIGINAL: Hobbsy

LOP. you probably saw an earlier mention of my tearing my left bicep loose from my shoulder plus 75% of my left rotator cuff. I thought I was finished with therapy last Thursday but the Doc. extended to Sept 4th. This has been going on since Feb. 27th. So far, no fly this summer. I sincerely hope this is a once in a lifetime Orthopaedic experience. I'd much rather orthopede an engine.

I have about 250 various Saito picture and was looking for a picture of the ''fire hose nozzle'' muffler that came with my 1.50. I may have deleted the picture since I only run a TurboHeader on it now. I am going to do a before and after picture because it is a genuine mess. I'll give it a 45 minute boil in antifreeze and take another picture. Off to therapy now.


Hobbsy,

Can't you find a club member to drive you to the field, setup your stuff, put the plane on the ground, hand you the TX, set up the lawn chair. then you just hold the TX on your lap. that should be less than 5 lbs.

I am in Michigan or I would have come over to get you in the air at least a few times this season.




Old 10-14-2012, 06:17 PM
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ORIGINAL: Old Fart

That's interesting and the cap looks to be about 72?'' wingspan,the standard 180 would rip it's nuts off.

Sig CAP231 arf w/Saito 180, nuts ripped off. FULL pucker, Loads of fun.
Old 10-14-2012, 06:31 PM
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ORIGINAL: Old Fart

Now THAT looks like a lot of fun.Do you really need the wheels or are you just going to hand launch?

Old Fart,

I know you are funny, but I didn't know you are psychic, The wheels came right off. luckily we had a jar of applesauce. the applesauce was all gone, but the lid was extra virgin.

one of the locals jokingly said here use this. ad laughed his head off. then I put a screwdriver throught it and mounted it up. flew it around a few passes and then did a few sassy ground loops. Just as good a the bird if you please. And now I present photographic evidence of said outing. for your viewing pleasure sir.
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Old 10-14-2012, 06:32 PM
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ORIGINAL: Hobbsy

I have about 250 various Saito picture and was looking for a picture of the ''fire hose nozzle'' muffler that came with my 1.50. I may have deleted the picture since I only run a TurboHeader on it now. I
What the heck does a "fire hose nozzle muffler" look like?

Old 10-14-2012, 06:49 PM
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Would a 18/6 prop be too much for a 150?
Old 10-14-2012, 07:15 PM
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ORIGINAL: Dolphpb

Would a 18/6 prop be too much for a 150?

If it is on a streammlined airframe that will gain speed & allow the prop to unload inthe air it will do great. I ran that prop on my FA150 in an 89" WS Dynaflite PT-19 & it did a wonderful job.

If it's on a big high drag airframe like a Stearman, you might be better off W/a 16X6.
Old 10-14-2012, 07:34 PM
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just finished reading it all, 23,120 posts, 925 pages.

I now know what the reward is. - being able to contribute and reply as part of the current discussion.

I was taking my 5 year old daughter to school, she is in Kindergarten at a Lutheran church here, on the wall is a baptismal chart listing names. one caught my eye. William L. Robison

Cheers.
Old 10-14-2012, 07:43 PM
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Must be the same William Robison? Thanks for the nice warm post jkr1100. You are truly blessed.

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