Welcome to Club SAITO !
10-05-2021, 02:46 PM
My Feedback: (27)
Dave
I use the Klotz Super Techniplate that is 20% castor. I know your feelings on using castor and I am thinking on switching when my supply is gone. I have had exhaust valves get carboned up on small 4C engines. I have also used a Go- Kart oil called Thor with good results but the price has gone up and it is now harder to find. My normal fuel is 18% oil and 3% nitro. This mix works good in all my engines for the type of flying I do. I am always on the look out for a lower cost oil that is good. The Klotz Techniplate is now about $70 and Super Techniplate is about $60 a gallon on Amazon.
I use the Klotz Super Techniplate that is 20% castor. I know your feelings on using castor and I am thinking on switching when my supply is gone. I have had exhaust valves get carboned up on small 4C engines. I have also used a Go- Kart oil called Thor with good results but the price has gone up and it is now harder to find. My normal fuel is 18% oil and 3% nitro. This mix works good in all my engines for the type of flying I do. I am always on the look out for a lower cost oil that is good. The Klotz Techniplate is now about $70 and Super Techniplate is about $60 a gallon on Amazon.
10-05-2021, 02:59 PM
Senior Member
I just cleaned up an old high compression Saito 80 today, the exhaust valve was really heavily coated with black residue and the was from using 80/20 blend lube years ago.
10-05-2021, 05:36 PM
18% oil content at 80% synth/20% castor calculates to 4.5% castor. That's double the amount of castor I've been using these last 3 years. No problems so far with carbon build up sticking the exhaust valve at 2.25% castor. Time will tell I suppose.
I have no experience running 100% synthetic with methanol so I can't comment but Dave's engines seem to be doing good so far.
I have no experience running 100% synthetic with methanol so I can't comment but Dave's engines seem to be doing good so far.
Last edited by Glowgeek; 10-05-2021 at 05:42 PM.
10-06-2021, 06:55 AM
I have run 100% synthetic in 2 strokes but you had to be careful of overheating, I think I will stick with a little castor in the oil blend of the 4 stroke fuel.
10-07-2021, 10:15 AM
O/K. I have one I need help on. Have a Saito 100 that I simply cannot lean enough with the LS needle to idle reliably. Even with the needle screwed all the way in still rich.
Will be pulling it off to have a boo, but other than an extremely opened jet or deformed needle end would not think this is possible.
Any ideas?
Will be pulling it off to have a boo, but other than an extremely opened jet or deformed needle end would not think this is possible.
Any ideas?
10-07-2021, 10:20 AM
I need a bit of help with this one. Have a side mounted 100 that I simply cannot lean enough with the LS needle to smooth out, even bottomed all the way in.
Other than a deformed jet tube or damaged needle cannot think of any reason could not drop the mixture without cutting it out completely, but it will still run, just rough.
Fuel is 15% nitro, 17% lube and used throughout the fleet.
Other than a deformed jet tube or damaged needle cannot think of any reason could not drop the mixture without cutting it out completely, but it will still run, just rough.
Fuel is 15% nitro, 17% lube and used throughout the fleet.
10-07-2021, 02:08 PM
I need a bit of help with this one. Have a side mounted 100 that I simply cannot lean enough with the LS needle to smooth out, even bottomed all the way in.
Other than a deformed jet tube or damaged needle cannot think of any reason could not drop the mixture without cutting it out completely, but it will still run, just rough.
Fuel is 15% nitro, 17% lube and used throughout the fleet.
Other than a deformed jet tube or damaged needle cannot think of any reason could not drop the mixture without cutting it out completely, but it will still run, just rough.
Fuel is 15% nitro, 17% lube and used throughout the fleet.
As to not being able to lean the lsn enough you may have crud built up inside the tubular portion of the lsn. That could cause a false "fully seated" feeling when screwing it in and cause all kinds of problems at other rpms too.
Another thing to check is the throttle barrel retaining screw for excessive wear. If it is badly worn the throttle barrel will extend outward further than normal causing an overly rich condition. I have never seen one worn to that degree but have heard of it.
Last edited by Glowgeek; 10-07-2021 at 02:33 PM.
10-09-2021, 04:14 AM
My new engine test stand has gotten a good workout this week. I've run up four different engines so far (26cc to 55cc). Set up time is very quick, that is until I mounted up my Saito 90T. No way to get glow igniters on with those angled back plugs. Doh!, hadn't considered that.
Time to rummage through my old parts boxes to see if I can find a couple of remote glow assemblies.
Time to rummage through my old parts boxes to see if I can find a couple of remote glow assemblies.Last edited by Glowgeek; 10-09-2021 at 04:20 AM.
10-09-2021, 11:13 AM
Senior Member
That Fitzpatrick gave a new definition to the word loud. The other engine is a Webra P-5 91, designed to turn a 16 x8 at 9,000 on 5% fuel, and it did exactly that. it flew a Cermark Cap 232. I tried that same 16 x 8 on a Super Tigre 91 and it turned it 7,700 and then started smoking then knocking loudly.
10-10-2021, 06:28 AM
IIRC, it had a proper Saito four stroke/cycle under the cowl too.
Dave, That OPS was a sweet engine, but only Chrysler can legally call it a "
HEMI ®" 
Last edited by Jesse Open; 10-10-2021 at 06:34 AM.
10-10-2021, 08:26 AM
Just kidding, but actually the word "Hemi" ® a
trademark registered by Chrysler so nowowned by the current Italian operators
Hemispherical, perhaps but Hemi is already owned . The Guzzi V twins are true Hemispherical, happily not "Hemis"
Last edited by Jesse Open; 10-10-2021 at 08:29 AM.
10-10-2021, 07:42 PM
My Feedback: (1)
and, back then, Chevy had a 372, with a 350 crank (3.480 stroke) in a 400 block (4.125 bore) that they raced in the Cheetah. a very cool car if you like setting on a ring gear
LOLJim
10-11-2021, 04:40 AM
Been out flying the Oscar lately? That was my other favorite. Sure looked pretty, that open cockpit and the big round front!
IIRC, it had a proper Saito four stroke/cycle under the cowl too.
Dave, That OPS was a sweet engine, but only Chrysler can legally call it a "HEMI ®"
IIRC, it had a proper Saito four stroke/cycle under the cowl too.
Dave, That OPS was a sweet engine, but only Chrysler can legally call it a "
HEMI ®"
Leaning toward the big FA....