HARRIS-G

The thing that Redline oil is not recommended for that engine.... but nobody using it had problems is something i cannot understand........

Harris

CRG

My Feedback: (3)

Horizon recommends Red Line or Power Model oil in Saito gas engines.

radfordc

My Feedback: (14)

Easy to understand....Redline is a very good oil.

the pope

Pretty much everyone who flies giant scale planes use redline or sthil ultra HP oil . I know thats 2stroke but they have alot of $ tied up in their planes .

scubaozy

Did you re-adjust the needles after changing the oil? This thing is very sensitive to the changes in the fuel/oil mix. It could be that with new oil, your needle settings became too lean because it was adjusted for something else. I would re-adjust after changing the mix.

radfordc

My Feedback: (14)

I checked the needles...the adjustment didn't change. The engine was running slightly rich like always. The max cylinder head temp I saw was just over 300F.

HARRIS-G

I can't find it somewhere in Horizon site!!

HARRIS-G

So why everybody says that you must not use it.... it doen't oil properly the engine...... and finally do they have their own experience with this oil....??? or what????

Harris

radfordc

My Feedback: (14)

I don't think "everybody" says not to use it. Maybe a few "loud" voices have said it and others repeat what they hear without any experience.

HARRIS-G

YES Exactly!! So if someone wants to help in this thread.....It would be better to share his own experience, and maybe that help to find out want happens with the cracked cylinders.

Harris

ForcesR

I purchased the FG60R3 back in Jan-2016 after it was mentioned that the engine was upgraded by Saito to include the Ray English modifications, addition of the crank pin bronze bushing and the more efficient fuel inlet manifold. I had not run the engine for the break-in procedure yet, so I decided to remove the rear cover to confirm the engine had the two RE mods. The good news is the crank has the bronze bushing but the fuel inlet manifold does not have the fuel inlet extension pickup tubes like the FG84R3 has as is shown in the RE modification video. I also have the FG90R3 and both modifications are embodied on that engine, although Saito incorporated a different type of improved fuel inlet manifold mod that is different from what RE installed on the FG84R3.

slither

That is because the intake mods you see in the FG84 video are intermediate... not the final version that ended up on the FG90. Ray said that Saito copied that intermediate version on this engine, but it looks like they did little to no mods on the intake. Regardless, that did not make its way into the FG60 design. For some reason, Saito would rather commit suicide than provide a fix for a bad design! They are taking a beating on this...

Do you have photos ot the FG90? They should have put the roller bearing in it for all the extra weight it has...

ForcesR

The FG90 does not have a roller bearing installed, it has the RE bronze bushing installed in the master rod. The photos of the FG90 bronze bushing and fuel inlet manifold mod are in the FG90R3 thread two threads below this thread.

slither

Yes, you'll note that I said, "They should have put the roller bearing in...", not that they did put it in. I will check out that thread...

beaver1234

Guys for those of you that have the Saito 60R3 who run the cool blue oil with no mods, are there any running well? Also how loud is one on stock muffler vs Keleo. How much of a noise difference is it to say a DA-35 with a pitts or a DLE 35ra. What I mean is not the 4 stroke cool sound but that actual decibels. I don't need exact numbers just a idea.

Thanks

elmshoot

My Feedback: (6)

The book says fuel burn is 30CC min is that a good number?
I like that I don't have to carry a tone of fuel to fly 8-10 minutes. I'm thinking 16-20 Oz tank.
Sparky

aquaskiman

My Feedback: (46)

The one I had sipped gas

scubaozy

I am flying with 500ml (17oz) tank and after 10 mins of flying I still have it half full (or half empty :-)).

beaver1234

Guys for those of you that have the Saito 60R3 who run the cool blue oil with no mods, are there any running well? Also how loud is one on stock muffler vs Keleo. How much of a noise difference is it to say a DA-35 with a pitts or a DLE 35ra. What I mean is not the 4 stroke cool sound but that actual decibels. I don't need exact numbers just a idea.

Thanks

BobH

My Feedback: (2)

what is the "cool blue oil"?

beaver1234

Morgans Cool Power 'Blue' Synthetic Lubricant stated in the manual and what Ray suggests

BobH

My Feedback: (2)

thank you,
So far I've only used Stihl ultra. So far no issues. about 2 hours running time.

slither

I spoke to Ray last week and he had this to say. He has a few oils he recommends for an important reason. The 2-cycle oils he does not recommend are intended to lubricate the 2-cycle engine cranckcase first and then burn off in the engine's combustion chamber. They are formulated to leave little residue. This is helpful to keep chain saws and weed eaters from getting covered with gunk. The oils that Ray is recommending, 4-cycle oils, do not burn in the combustion chamber, and, thus, tend to linger on the lower end crankcase parts to keep them lubricated and cool. The oils blow by the piston rings, and that is how the bottom end is lubricated in these engines. If the oil is burned up in the combustion chamber it cannot get down into the case to lubricate the bottom end.

The down side is that the oil tends to pass out the exhaust (and crankcase vent) and gunk up the bottom of the plane, leaving a lot of yuk all over, including inside the crankcase where you need it - all this according to Ray. This is the most important reason not to use the 2-cycle oils in your 4-cycle Saito gasser.

beaver1234

Good explanation. You are correct. I too remember Ray mentioning the differences and importance of running the right oil. As never owned one of these engines how does it compare noise wise compared to a 2 stroke? Obviously it is a nice 4 stroke sound but if you put 2 side by side how much louder is one over the other?

Thanks

SWORDSN

My Feedback: (13)

Has anyone using the 4 cycle oil had a cylinder crack or internal parts break?