Saving big bucks or Saito FA180 gasoline conversion

[@davidmifsud645]

Another brilliant video. Love the graphics at the start.i think this experiment is a good idea as it also depends on the use of the engine. For a uav application to save lives a more simple setup and efficient set up like this with a longer range is better. Maybe gasoline is not the best for the engine to last forever but for uav application if it lasts for 20 missions the positives outweigh the negatives. Also if the uav is not designed to come back home it doesnt matter. Its good to see you push the little engines to there limits only then can we learn and understand them. Great work .

[@crazyengines88]

Thank you very much for your comments and thoughts ! Really appreciated ! I've some plans for the next tests for this Saito FA180, so, please, stay tuned !Have a nice day !

[@modellismo1856]

Hi, Saito glow engines don't use bearings on connecting rod, gasoline is less "dry" and give a little lubrication compared to methanol and maybe this can help; an investigation after some tanks could be interesting. Thanks for this experiment.

[@crazyengines88]

Thank you, great comment, really ! This is not just one time run, I'll try to investigate engine's behavior in such conditions. So, in a week or later we'll have a continuation of the whole story - I've some more glow plugs, which weren't intended to run with gas fuel mix, but we'll learn this later. Thank you for watching !

[@TestECull]

Not really worth it when you factor in how short the engine's lifespan will be and how easily it will throw a rod. These conversions overstressed the engines in three ways. 1: Excessive heat load. Gasoline burns way hotter than methanol/nitro, which means the engine will effectively be overheated at all times. Glow engines generally don't have enough fin area to deal with this. And you're encountering some of this as well. 2: Oil ratios are too thin. Gasoline typically runs a 25:1-100:1 ratio of fuel to oil. Glow fuel is usually in the 4:1-7:1 area. Saito engines are designed for the latter, with plain bearings in their conrods that rely on a ton of oil blowing past the ring that just doesn't happen on the super thin fuel/oil ratios of gasoline. These engines are RELIANT on oil mist blowing past the piston ring to lubricate themselves and that requires a lot more oil in the fuel than even the 20:1 brew you're running here. Saito's gas radials, in particular, are bad about throwing rods because of this. 3: The leaner AFR of gasoline over methanol/nitro further starves the engine of oil. Not only is the oil content of the fuel way way WAY too low, but the amount of fuel running through the engine is a mere fraction. This is why people try to do these conversions...cheaper fuel use less of it....but it's also what kills them. Saito has enough trouble with the gas engines they sell exploding. I never advise converting ANY Saito glow to gasoline. It may run sweet now but it won't last very long.

[@mikeeiben3430]

I have ever heard of people ruining connecting rods on OS FT-300 's running 4 stroke glow fuels with reduced oil content.

[@crazyengines88]

Thank you very much for your comments and for your opinion ! This is very important for me. But, I should say, that there is some areas, were this engine will be very nicely used. 1. As a part of UAV flight range extender. Being operated with a alternator, such engine/generator bundle can seriously extend the range of researching UAV, or else. Lifespan of the engine in the human life conditions isn't so important, if your UAV mission was successful. You can save a hundreds human lives for a price of the one potentially burned Saito FA 180. I know, what I'm talking about. 2.I've some plans for engine's behavior investigation.consequences 3. I'll increase fuel / oil mixture ratio to keep better engine lubrication conditions. Absolutely agree with you about the tough engine's load conditions during last run. 4. I'm really like this engines and don't want to kill them. Thank you very much for being very informative, appreciated for that ! Have a nice day!

[@crazyengines88]

@@mikeeiben3430 Definitely, interesting, thank you! As I start this investigation, I'll not leave all of you washout the results. Just give me a little bit of time. Thank you !

[@mikeeiben3430]

@@crazyengines88 I recall from one of your previous videos running an FG engine on gasoline with 20% oil content. I was surprised how well it ran with that much oil. I believe Saito is now recommending a 15:1 gas to oil ratio in their FG series engines.

[@crazyengines88]

@@mikeeiben3430 Hi and thank you for your comment and information. Understand, next runs will be provided with bigger oil content, 15:1, at least. Also, will be interesting to know, how increased lubrication will affect engine's performance. Thank you and have a nice day !

[@Sercan3860]

I enjoyed watching your video very much. However, I could not understand the brand of the carburetor you used. Is it possible for you to specify the brand and model? Additionally, where can I buy it?

[@crazyengines88]

Hi, and thank you for so high evaluation of my work. I'm really pleased, thank you. Such positive comments is a great motivation to make more and better content. Regarding your question, this is DLE 30 / 35 Walbro carburetor for DLE 30/35 cc engines, and you can purchase it here, at Aliexpress: www.aliexpress.com/item/10000122402866.html?spm=a2g0o.order_list.order_list_main.120.4edf1802Ef4V3s Hope, it could help. Thank you and have a nice day !

[@Sercan3860]

@@crazyengines88 hi again, so how did you connect this carburetor to the apparatus with the original saito carburetor? Did you use any equipment or how did it happen?

[@crazyengines88]

@@Sercan3860 Hi again, and thank you for your question ! In case of installing DLE30/35 carb, I just utilized 2 holes at the carb body, it were exactly the size for 2 screws to screw it to the intake manifold. In case with genuine Saito carb I use plastic tube to tighten the carb body on Saito intake manifold.

[@EnglishTurbines]

Having the engine on a proper timed ignition is very desirable. The glo plug is not really suitable because the timing is uncontrolled. Reducing compression ratio and retardation and advancing timing is crucial to prolong engine life...Get it on an ignition system is my advice....🤔🙄😳🇬🇧

[@crazyengines88]

Hi, definitely, you're totally right, you can rely on spark ignition, it is more predictable, for sure.

[@aSpyIntheHaus]

Hey mate sorry for the no show of late. KZbin seemed to think that I no longer needed to see these vids an decided to stop showing the notifications for them.

[@crazyengines88]

Hi, and thank you for your comment ! Very nice, that you returned without any KZbin notifications ! I like to read your comments and your opinion about some video topics, so welcome again ! I'm really can't understand KZbin algorithm, and there is no any idea, how I should react on that. I only know exactly, that when I publish the video, I always check the checkbox with "notification to subscribers". I think, that you missed some very interesting videos, dedicated to the flat twin line of the OS engines, called "Gemini", as FT120, early version, FT120 II, FT160, FF 240 "Pegasus", really rare and quite interesting engine. A few other videos are in production. So, enjoy this, and definitely, I'll wait for your comments ! Thank you and have a nice day !

[@aSpyIntheHaus]

@@crazyengines88 mate I'll keep coming back. I love your vids. Actually you have convinced me that running 5% nitro in a Saito engine is a really good idea. I have found it helps minimise soot build up and as you found it assists at idle and generally just running smoothly. I'm not trying to over power them just keep them running nice a clean and smooth.

[@crazyengines88]

@@aSpyIntheHaus Thank you for your feedback ! Than was exactly what I want to achieve, to stabilize engine's behavior, to increase the efficiency of fuel combustion. As a side benefit - less sooth and carbon build up. Thank you and have a nice day !

[@Aviator747a]

You should make a spacer with some G10 between the carb and its mounting flange. Heat from the engine will migrate into the carb and throw off your carb settings.

[@crazyengines88]

Thank you very much for your comments ! Definitely, very useful advice, thank you. This is just a first steps in the gas conversion adventure w/o spark ignition, so stay tuned, will be more interesting later.

[@danielhitchens4407]

Grab a asp engine and check out their conrods, brass bushed they are, asp fs91, converted to gas stock glow carb..it runs absolutely perfect, and smooth idle after breaking it in..

[@crazyengines88]

Thank you very much for your comment ! I'll check this engine after the test run cycle, probably, it will be really necessary to modify both conrod ends with a bronze bushing, as usually implemented in O.S. engines design.

[@danielhitchens4407]

The bigger the glow engine the more methanol they use! Conversion to gas of 4 stroke engines is no way a bad idea, i run a saito fa120r3 converted, yes plain aluminium conrod journals, woop di do.. i started break in at 15 to 1 roughly 65ml per litre oil..now im running 40ml per litre. 10lt of fuel so far..i run about 1 litre per week and this engine is awesome..i run 20min air time and it sits on full throttle most of that, 8500rpm on the ground. So with the wind would hit close to 9000rpm..sure the engine runs slightly hotter than glow,but definitely not excessive

[@crazyengines88]

Thank you for your explanations, very interesting ! I was really a bit scared after seeing the smoke. It was really overheated.

[@danielhitchens4407]

​@crazyengines88 richen up the high speed needle so it wont get hot..i would run the engine at a rich level for quite awhile..how old is the engine? Either way the engine needs to run rich for atleast 2hrs..

[@crazyengines88]

@@danielhitchens4407 Thank you for your advice ! Engine isn't new, it's from completely rebuild story, kzbin.info/www/bejne/Z5zSimNnnLCkfLM and kzbin.info/www/bejne/q56YZGNso8mMkKc, new bearings, etc. I'll follow your recommendation to richen fuel mix, will also increase oil content. So, next run will shows... Thank you and have a nice day !

[@danielhitchens4407]

Asp ft160 converted to gas..this engine took some time to break in and get it reliable, this engine and the others converted so far they all produce plenty of oil waste out the crank case, despite being a lower oil content,the gasoline vs methanol, gasoline has much better lubrication over the methanol hence the need for way less oil content over a glow/methanol fuel.. ..go scale down a single cylinder motorcycle engines cooling fins to the saito cooling fins..example a xt600 (4" bore) Saito fa180 (1 1/2" ?) Then compre the scale? It has been proven that a converted glow engine can give many years of engine life, dig deep and find the right conversations on forums, youl see

[@crazyengines88]

Thank you, your information is very valuable, especially from the first hands. Much appreciated for support ! Have a nice day !