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Old 04-03-2019, 03:38 PM
  #39851  
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Welcome to the club kwalker. I don't have any saitos that big but they're all pretty much the same; wonderful runners.

Saitos: "The engines Jim gives funny names to!"

Last edited by Glowgeek; 04-03-2019 at 04:33 PM.
Old 04-03-2019, 04:59 PM
  #39852  
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Originally Posted by KWalker98
I just acquired my first Saito, I usually run OS two strokes, electrics, or large gasers, it's a Saito 180 Golden Knight that is going into my 1.20 P6E hawk. I'll post pics when I get some. Glad to be here.
Welcome
The 180 is awesome. I have couple myself.
Along with a couple smaller Saito’s.
Old 04-03-2019, 05:04 PM
  #39853  
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welcome aboard Kwalker, but you must be warned early, you will soon be a Saito freak like the rest of us

hey guys, you should have been around for the bearing wars we had back a few years with our OS Hyper 50 Heli engines.. while the first OS 50 SX Heli (silver head) had NTN rear bearings, they were lasting 4, 5, or more years, yet the un-badge rear bearing that came in the Hyper 50 engine (blue head) were lasting only 1 or 2 gallons, some times 3 gallons, if you were lucky., but most were not lucky.
I had 2 OS Hyper 50s, well I bought a NTN and for the other I bought a NSK, I bought both bearings at the same time. in the hand, well I tell you the NSK was smoother !!

Jim
Saito Engines, like butter on bread, sweet sweet sweet
Old 04-03-2019, 05:05 PM
  #39854  
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Originally Posted by Hobbsy
I leave castor far away from my engines, it eventually turns into glue.
And when the exhaust valve starts sticking to the seat it will wipe the nose off the exhaust lobe of the cam.

Been there done that..
Old 04-03-2019, 06:07 PM
  #39855  
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Originally Posted by Jesse Open
Edit: I see the vent that I think you are referring to is at the case bottom(?)
Errrrr uuuugh, yeah. Whoops.....lol
Old 04-03-2019, 06:10 PM
  #39856  
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M
Originally Posted by Glowgeek
Welcome to the club kwalker. I don't have any saitos that big but they're all pretty much the same; wonderful runners.

Saitos: "The engines Jim gives funny names to!"
LOL that name "Spark-O-Matic" was for the plane, but I was thinking about calling my FA 115 "J-Lo" because as the way Pete talks about the 115, it must have it, all over it

Jim

Last edited by the Wasp; 04-03-2019 at 06:34 PM.
Old 04-03-2019, 06:32 PM
  #39857  
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hey guys, I forgot to tell, my wife & son and daughter in-law came back from their trip, he won a $Grand and his wife won $400 in the casino, he said they each were playing a penny slot machine and the machines kept giving them extras and specials, he said once in a while he would put a dime in and win, he said 1 win gave him $500, he said he wants to go back, LOL I told him if he goes back he will slowly be paying back the casino

Jim
Old 04-03-2019, 06:36 PM
  #39858  
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Originally Posted by the Wasp
hey guys, I forgot to tell, my wife & son and daughter in-law came back from their trip, he won a $Grand and his wife won $400 in the casino, he said they each were playing a penny slot machine and the machines kept giving them extras and specials, he said once in a while he would put a dime in and win, he said 1 win gave him $500, he said he wants to go back, LOL I told him if he goes back he will slowly be paying back the casino

Jim
Truth. Won $500 myself on nickel slots, next time I went back lost $200.
Old 04-03-2019, 07:03 PM
  #39859  
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Originally Posted by acdii
Truth. Won $500 myself on nickel slots, next time I went back lost $200.
I just remembered, my fiend went to Las Vegas, he was standing by a big slot machine, he was waiting for his wife and he was broke, but he pulled out 2 quarters and put them in the slot, bells went off and he won 2 $grand, some guy walked up to him and told him that he should have put 2 dollars in because if he did he would have won 200 $grand, that was some 25 years ago

Jim
Old 04-04-2019, 01:35 AM
  #39860  
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Originally Posted by SrTelemaster150
And when the exhaust valve starts sticking to the seat it will wipe the nose off the exhaust lobe of the cam.

Been there done that..
All good things in moderation my grandad said,
Old 04-04-2019, 01:44 AM
  #39861  
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Originally Posted by Rudolph Hart
All good things in moderation my grandad said,
And he said it well.
Old 04-04-2019, 01:49 AM
  #39862  
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New bearings and gaskets done.I use between 3 and 5% castor in all my saito engines.Stripped this one straight after a flying day and as usual the cam gear and pushrods are wet with oil,standard cc vent.

Originally Posted by Glowgeek
If my wife really wants some she'll use a little castor on her neck. Lol
Glad you bought that up pard castor oil has excellent anti inflammatory properties if you rub it on your own joints,not the recreational ones.

Dave that white grease is an old tub of shell molly denim disulfide (MoS2 for the tech heads) i just use a dab to hold gaskets in place,the rest of the parts get a wipe over with automatic transmission fluid.
Old 04-04-2019, 01:51 AM
  #39863  
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Originally Posted by the Wasp
welcome aboard Kwalker, but you must be warned early, you will soon be a Saito freak like the rest of us

hey guys, you should have been around for the bearing wars we had back a few years with our OS Hyper 50 Heli engines.. while the first OS 50 SX Heli (silver head) had NTN rear bearings, they were lasting 4, 5, or more years, yet the un-badge rear bearing that came in the Hyper 50 engine (blue head) were lasting only 1 or 2 gallons, some times 3 gallons, if you were lucky., but most were not lucky.
I had 2 OS Hyper 50s, well I bought a NTN and for the other I bought a NSK, I bought both bearings at the same time. in the hand, well I tell you the NSK was smoother !!

Jim
Saito Engines, like butter on bread, sweet sweet sweet
When I was doing bearing replacements in machine repair, Chinese bearings were not a factor. The Japanese stuff was just starting to show up at the bearings dealers. It was a similar situation. The American and European bearings would blow NTN and NSK stuff away in every way.

I still look for European stuff for my own uses.
Old 04-04-2019, 03:13 AM
  #39864  
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Originally Posted by Jesse Open

When I was doing bearing replacements in machine repair, Chinese bearings were not a factor. The Japanese stuff was just starting to show up at the bearings dealers. It was a similar situation. The American and European bearings would blow NTN and NSK stuff away in every way.

I still look for European stuff for my own uses.
How about dropping some Euro bearing mfg names on us Gary? I'd like to research some better alternatives.
Old 04-04-2019, 03:24 AM
  #39865  
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One of the local bearing suppliers.:

https://www.motionindustries.com/tax...AMRC+%28SKF%29

Often you can even find NOS USA made such as New Departure Hyatt etc.
Old 04-04-2019, 03:24 AM
  #39866  
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One of the local bearing suppliers.:

https://www.motionindustries.com/tax...AMRC+%28SKF%29

Often you can even find NOS USA made such as New Departure Hyatt etc.

Be aware, a Euro name doesn't automatically mean Euro made. They are however made to very high standards.

Last edited by Jesse Open; 04-04-2019 at 03:27 AM.
Old 04-04-2019, 03:52 AM
  #39867  
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Originally Posted by KWalker98
I just acquired my first Saito, I usually run OS two strokes, electrics, or large gasers, it's a Saito 180 Golden Knight that is going into my 1.20 P6E hawk. I'll post pics when I get some. Glad to be here.

Welcome K, we have quite the diverse group as you'll see from viewing our varied and differing opinions
I'm Dave, I keep castor far from my engines and get busted almost daily for it. Avid motorcyclist.
Rudolph is Pete,RC guy and motorcyclist, a very talented builder and motorcycle and auto painter.
Captain Crunch is Mike, flooring guy and RC pilot
Jesse is Gary, man of many talents, RC pilot and builder, great all around machinist, a motorcyclist also
Jim is Jim I don't his vocation, he is an RC builder and flyer
GlowGeek, I'm short on his facts
ACDC, we have trade engines with each other

All of us rebuild engines and compare notes here.

Saito 130 before


Saito 130 after
Old 04-04-2019, 05:27 AM
  #39868  
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Taipan and OS-f,The Fox Miracle lines up the same as the Taipan.


Fox Miracle


Taipan completely fills thread cavity like Fox does.


OS-f leaves two of the cylinders threads exposed even though the nose protrudes into the combustion chamber.
Glow plugs, these pictures are not as good as I'd like, a while back there was some mention that certain glow plugs left threads exposed in the combustion chamber of Saitos. I experimented with a Fox Miracle, Saito SS, Taipan 4-c special and an OS -f. The Fox Miracle and the Taipan completely filled the thread cavity, the OS-f and the Saito ss left about 2 threads exposed. Big deal or no, I don't know, I have always thought that the Fox Miracle, the Taipan and the Sonic Tronics, 4-c all provided smooth midrange and great idle, no plug seems to effect top rpm.
Old 04-04-2019, 06:28 AM
  #39869  
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I found the Fox plugs ran the smoothest over the F. I have some Merlin plugs and the verdict is still out. https://www.merlinglowplugs.com/
Old 04-04-2019, 06:43 AM
  #39870  
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Originally Posted by acdii
I found the Fox plugs ran the smoothest over the F. I have some Merlin plugs and the verdict is still out. https://www.merlinglowplugs.com/
I've found that 1/4" x 32 spark plugs run smother yet.
Old 04-04-2019, 06:47 AM
  #39871  
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Originally Posted by Hobbsy
Welcome K, we have quite the diverse group as you'll see from viewing our varied and differing opinions
I'm Dave, I keep castor far from my engines and get busted almost daily for it. Avid motorcyclist.
Rudolph is Pete,RC guy and motorcyclist, a very talented builder and motorcycle and auto painter.
Captain Crunch is Mike, flooring guy and RC pilot
Jesse is Gary, man of many talents, RC pilot and builder, great all around machinist, a motorcyclist also
Jim is Jim I don't his vocation, he is an RC builder and flyer
GlowGeek, I'm short on his facts
ACDC, we have trade engines with each other

All of us rebuild engines and compare notes here.

Saito 130 before


Saito 130 after

A bit of curiosity here. IIRC, the Saito FA-130T cam set had unique part numbers. Was the FA-182 cam pair a good replacement?


Originally Posted by acdii
I found the Fox plugs ran the smoothest over the F. I have some Merlin plugs and the verdict is still out. https://www.merlinglowplugs.com/
Looks like they are not being made at present.
No problems here from the OS "F" plug, or the Enya #3 plug. Not expensive and very light in weight
They last darn near forever too!

Last edited by Jesse Open; 04-04-2019 at 06:53 AM.
Old 04-04-2019, 10:19 AM
  #39872  
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any one try the K&B 4St plugs, I bought a few but of course I have not tried them yet

Jim
Old 04-04-2019, 10:41 AM
  #39873  
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Originally Posted by SrTelemaster150
I've found that 1/4" x 32 spark plugs run smother yet.
Yep, I know I'm a fan.

Saito 80 with 15.5 to 1 compression.
Old 04-04-2019, 10:50 AM
  #39874  
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Originally Posted by Glowgeek
How about dropping some Euro bearing mfg names on us Gary? I'd like to research some better alternatives.

Here are the first round of Saito 50 numbers: Each number arrived at three times by reducing rpm by 100 rich then re-peaking.

Saito 50 GK
Prop===APC 12x6
Fuel===Wildcat 10% with 18% full syn.
Plug===Fox Miracle
Muffler=Stock cast, not the revised version but same internals.
Turbo Header
RPM stock muffler======9,240
RPM with Turbo Header==9,390
Idle=================1,770

The poit, poit, poit, is alive and well at idle with the Turbo Header.

Last edited by Hobbsy; 04-04-2019 at 10:53 AM.
Old 04-04-2019, 11:10 AM
  #39875  
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Originally Posted by Jesse Open
Could be corrosion etching from oil retained moisture. Is that a rear vented engine?
Yes, corrosion from fuel & moisture and sitting too long.

Front vented engine below the cam box on the crankcase. What interesting is the original main bearing was a shielded bearing. You would think with a front vent that the main bearing would be open to allow efficient flow of oil to the vent.


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