NITRO and gasoline fuel: Saito FG21 crazy test

[@ya33a]

Now that was worth watching, I have Saito Engines too, an FG20 and a 125, plus tbe 100T and an R325, so I always wondered about Petrol/Gasoline in the 100T and 125...and now I have some baseline info to measure against.

[@crazyengines88]

Thanks for the comment, I'm glad that CrazyEngines channel was helpful a bit ! I think the 100T can really run great on petrol, all you need is the right carburetor, and the RCEXL twin ignition is quite affordable. The sticking point for me was the magnet flange for the 100T, and the 100T had a nasty habit of quitting off one cylinder (usually the left, pilot's side) on the glow ignition. Perhaps a petrol modification will cure it from this behavior ? I wish you success in this modification, it will be very interesting. Thank you and have a nice day !

[@aSpyIntheHaus]

Exactly. Yeah he's done well

[@crazyengines88]

@@aSpyIntheHaus Thank you for your comment !

[@aSpyIntheHaus]

I love how low you get your engines to idle mate. 😊

[@crazyengines88]

Thank you for your comment ! To achieve the lowest possible and stable idle is still one of my dreams. Almost collected a lot of practical experience, step by step going to reduce the idle speed limit🙂

[@billjones3071]

Thanks for the video, very cool

[@crazyengines88]

Thank you very much for your comment ! Much pleased, that you like it ! Thank you !

[@TestECull]

Nitro in the gas def perked that thing up. Wouldn't mind seeing hotter brews tested, too.

[@crazyengines88]

Thank you for your comment ! Definitely, this 10% of NITRO addition really make some improvement. I like its idle with 10% NITRO.

[@EnglishTurbines]

Predictable results....The spark ignition will always give the best results due to the precise timing of a spark ignition system....The Nitro provides oxegen and just helps the gasoline burn faster. Nitromethane and four strokes = Rusty bearings....from Nitic Acid residue.....🤔🙄😳🇬🇧

[@pablopercara3523]

Gracias por compartir

[@crazyengines88]

Gracias, fue un experimento muy interesante, espero que estos resultados sean útiles.

[@homienat3374]

Holy sh ttt . Nice mate you have that running perfect u know ya stuff 👍👍👍👍

[@crazyengines88]

Thank you for your nice comment !

[@TestECull]

I almost wanna see you feed that thing some model diesel fuel. Witch's brew of kero, ether, castor. Dave McIntyre tested a Saito glow/nitro single on the stuff and it ran quite well on it, aside from a bit of an ignition knock here and there.

[@crazyengines88]

Thank you for your comments ! I'll think about your ideas of alternative fuels. The only I definitely need, it's an extended time. 24 hours isn't enough, unfortunately. 🙂

[@mattiananni1450]

hi Crazyengine I'm having problems with my Saito fg21, I use apc 15/8, Saito spark plug, the engine has 5 liters of petrol, the maximum rpm it takes is 8000 rpm, and the minimum is difficult to regulate, if I lose weight for having 1600/1700 rpm as soon as I accelerate it dies, to keep it from dying I have to grease the idle a lot, I have to open it even more than what is open at the factory, and so it doesn't puncture, but it is very fat at idle and you can't get low rpm and regular, do you know what it could be? A thousand thanks

[@crazyengines88]

Hi, and thank you for your very interesting question ! Definitely, I can't catch up what the problem is, may be, you have some short videos of your engine run ? There could be a real bunch of potential issues. Only one is clear enough - probably, the reason of such behavior is in carburetor settings (if you're not don't dismantled your engine earlier). So, will wait for your videos. Thank you and have a nice day !

[@xKmotx]

This was a very interesting test session. Quite astonished to learn that glow plugs will stay energized with a 20:1 gasoline mixture. I was always under the impression that the platinum element had a catalytic reaction only with methanol. I wonder, did you secretly also try some standard non-4 stroke glow plugs? What is the performance number, R&M, or octane rating of your "regular" gasoline over there? And lastly, you need to make a proper throttle linkage for your test stand. You are, after all, an engineer! 😆

[@crazyengines88]

Thank you very much for your comment ! 95 octane regular (unleaded) gasoline was used. I borrow a quart from the fuel tank of my generator. Due to the very big amount of problems, which Saito FG21 was created today, it was non real to test something else. But...it's very nice idea to test 2 stroke glow plugs on regular gasoline fuel ! Engine is still mounted on the bench stand, so, stay tuned ! You can't even imagine, that every kind of investigation / research / test / experiment just open the doors of unknown. The more we're truing to know, the more we're understanding, that we don't know a lot (or even at all). There is never being an exact answers...new questions are coming. Thank you and have a nice day !

[@xKmotx]

@@crazyengines88 Can't even get 95 octane fuel in the USA anymore. In Calif "premium" fuel is 91 octane.

[@crazyengines88]

@@xKmotx Very interesting, thank you ! I can buy 92 octane this week, anyhow, should close my generator debit 🙂, and could make a fuel mix. Also, there is some gas stations, where we can buy even 100's octane ! Do you think, that different octane number can really make some influence with our small engines ? More and more questions...

[@xKmotx]

@@crazyengines88 As you know, higher octane fuel reduces the speed of the flame front travelling from the point of ignition across the top of the piston, to prevent detonation. If your engine has adjustable timing, then it could be advanced a little when using a high octane fuel. This theoretically could produce more power. The limitation would be either reaching detonation, or running out of timing advance. If there is no adjustability of your engines timing, then using high octane fuel has limitations to its cost/benefit ratio.

[@crazyengines88]

@@xKmotx Thank you for your comment ! Yes, agree with you. I can adjust only the ignition moment in some limits, I think, approx, +/- 12% from the T.D.C. , in this Saito FG21, (this is according to my eyes, not measured). Also, of course, it's possible to shift a bit main valve timing gear but this will shift all 4 phases of the engine cycle, as well. I have to think more about this topic - will it sufficiently affect on the engines performance ? The better way of increasing the engine's power output, could be a kind of a supercharger. Better I'll focused on fuel mixes and glow plug's potential and behavior.

[@Sercan3860]

Hi thamks for perfect video. I have same engine but ı got some issue about working, when ita middle thorttle engine coughing but low and high speed no problem why its happend ı can send a video feom email if its could please help me

[@crazyengines88]

Hi and thank you for your comment. Of course, I'll try to help you, please, send a video to my mail account. Thank you and have a nice day !

[@mikeeiben3430]

Did you have to enrichen the mixture after you added the nitromathane?

[@crazyengines88]

Thank you for your comment ! Yes, I did. Every run was preliminary adjusted with HS needle. I'm still trying to correctly interpret the results obtained.

[@ignasanchezl]

How are you getting nitromethane to mix with gasoline? As far as I knew they don't mix. Do they mix but separate over time?

[@crazyengines88]

Super, great question ! Really appreciate for that. I should say, that information regarding mixing ability of nitromethane with gasoline was extremely confusing, but in fact, up to 30% nitromethane can be added to gasoline fuel. 20% additive does not change the appearance of the mixture at all. More - the mixture begins to become cloudy, and about 30% is the maximum that can be added without the fuel mixture separating. But 30% is very cool. I want to try adding nitromethane to the fuel for my ATV, and see what benefits it can give, and what damage it can do. The main thing is not to add nitromethane to engines with an EFI system, because the lambda probe is guaranteed to blow the minds of the ECU. The cost of repairs may be higher than the potential interest in the topic. Anyhow, I´m really very nice pleased by your question - that means, that I'm doing my job more or less well, thank you !

[@ignasanchezl]

@@crazyengines88 Hey I love your crazy ideas. We think in a similar way. I recently bought myself a NGH GT9 Pro that's coming on the mail, the plan is to try nitropropane mixed with the gasoline and see how much power it will add. Will share the results if you're interested.

[@ignasanchezl]

I will also try porting the engine.

[@crazyengines88]

@@ignasanchezl Thank you very much for your comment ! And what was the result ? Will be interesting to know. Thank you.

[@crazyengines88]

@@ignasanchezl Hi, thank you very much for your information, and yes, of course I'm interesting, what result will you get ! It is very interesting, to investigate, how a kind of fuel additives influence on engines behavior and how ! Thank you ! In awaiting for your additional info after research.

[@alexyanguas2950]

Gasoline plus nitro, the secret of power... 😁

[@crazyengines88]

Thank you very much for your comment, indeed !

[@keizertreasures]

Burt Monroe proved that long ago

[@18414977]

Me gustaría ver el o,s engine 62V funcionar con gasolina y una bujía G5. Sería genial.

[@crazyengines88]

Buenas tardes y gracias por el comentario! Tienes razón, sería una combinación muy acertada! El único requisito es un buen carburador de gasolina que se pueda montar en un motor de 62v sin grandes modificaciones mecánicas.

[@Shokobo966]

what is the prop size?

[@aSpyIntheHaus]

So did you end up advancing (+) or retarding (-) the spark timing to make it work mate?

[@crazyengines88]

Practically, not. I discovered, by accident, that the engine, perhaps during a bad start with a heavy prop, or / and backfire, was able to cut off the locking pin that holds the propeller flange, and, accordingly, is also responsible for the ignition moment. I had to repair this and all settings were restored to "0", so now the engine has factory settings.

[@wagnerfratelli3500]

E se adicionar nitromethane na gasoline, para tentar conseguir outra possibilidade de rpm ?

[@crazyengines88]

Boa tarde ! Neste vídeo, a partir das 7m:20s, todas as lanchas já estão funcionando a combustível com +10% de Nitrometano, a primeira, como de costume, com ignição por centelha, as demais - em glow. Talvez, se este vídeo despertou tanto interesse, nos próximos lançamentos tentarei aumentar a participação do Nitro para 20% na gasolina, embora nos testes anteriores, após + 15% do Nitro, os motores não funcionassem melhor e as rotações até ficou um pouco mais baixo e o movimento ocioso tornou-se menos estável. Acho que neste caso, a mistura de combustível com alto teor de Nitro, (quase um terço), começou a resfriar mais a bobina incandescente, impedindo-a de manter pontos de fulgor.

[@mohdrazwan1194]

can i mix nitro fuel sells in rcshop with gas. if can what is the ratio. ?

[@crazyengines88]

Thank you very much for your question. I think, that attempt to mix nitro (methanol based) fuel with gas will not work, for a few reasons: 1. Glow fuel (methanol based) will not dissolve adequately with the gas addition, this mix becomes a kind of cloudy solution, which later will be will delaminate into 2 layers. 2. Gas fuel and glow fuel have different fuel/air ratios, and each fuel uses a dedicated carburetor that is not compatible with other fuels. I still have some ideas to continue to work with Saito FG and FA engines with diff fuel mixes, so definitely, in a week or two you can find an confirmed answer at CrazyEngines channel. Thank you for watching and stay tuned !

[@urbanairgunner6402]

I'm assuming for this to work it has to already be a gasoline engine were they gasoline carburetor not a Nitro carburetor?

[@crazyengines88]

Hi, thank you for your question ! This engine utilize standard gasoline fuel carburetor, specially designed by Saito for its gasoline engines product line. The same carburetor also used in Saito FG 60R3, or similar engines. Fell free to ask any details regarding this test, its results were really interesting. Thank you and have a nice day !

[@urbanairgunner6402]

@crazyengines88 I've got a Saito 150 Nitro that I would like to convert to gas due to the cost of nitro fuel. All of my other giant scale planes run two cycle engines From 9cc all the way up to 35cc. My other nitro engines are saito 82b I have on my j3 cubs. They are the most reliable engines I have ever had. I am a fan of saito. Anyway. Thanks for the info I will just save up and purchase a saito FG for my new crop duster build. Have a pleasant day.

[@pablopercara3523]

Aplica para Saito fg 60cc trillizos ?

[@crazyengines88]

Buen día, gracias por el comentario! Creo que un 10-15 % de Nitro añadido a la gasolina podría funcionar bien con Saito FG60 R3

[@pablopercara3523]

Gracias por la respuesta

[@crazyengines88]

@@pablopercara3523 ¡Estaba muy feliz de responder! Que tenga un buen día !

[@wagnerfratelli3500]

Tenho dificuldade pelo sotaque , por favor habilitar o idioma tradutor obrigado.

[@crazyengines88]

Boa tarde, obrigado pelo comentário, com certeza irei incluí-lo.

[@crazyengines88]

Almost done !

[@ronaldrose6885]

Try 110 octane or higher aviation gas???

[@crazyengines88]

Hi, thank you for your question ! Definitely, not yet, but I like your idea for the future testes. Could be very interesting, so thank you very much for your nice idea ! Have a nice day !

[@TrippinWithWayne]

nice!

[@michaelhunt8414]

You didn't say how much 10% nitro you added to the gas.....? 1/2 and 1/2...?

[@crazyengines88]

Thank you for your question ! At 7:24 in this video there was a banner with figures, to the standard gasoline mix (20:1), I was add 10% of Nitromethane, this percentage is calculated from the fuel mix volume. Thank you for your question, and have a nice day !

[@michaelhunt8414]

@crazyengines88 I understand that you added 10% nitro.....but how much of it did you add to the gas fuel?? One gallon of gas....did you add 10% of 10% nitro to the gallon of gas??

[@crazyengines88]

@@michaelhunt8414 OK, I understand, what you want to know. So, usually, for 1 test run I prepare 0.0792516 US gallon of fuel mix (300ml), so I add 10% Nitromethane from that volume, it means 0.00792516 US gallon (30 ml Nitromethane). Should note, that during my Nitromethane / Gas fuel mix evaluations I found, that maximum amount of Nitromethane, which could increase engine performance, is approx. 30%. Future increase doesn't make any improvement. Thank you for your questions, have a nice day.

[@remkojerphanion4686]

Next step: Nitrous oxide injection!

[@crazyengines88]

Thank you for your comment ! Definitely, you're reading my thoughts ! 🙂 Really, thinking about it !

[@remkojerphanion4686]

@@crazyengines88 You're crazy! I like that.... 😉

[@crazyengines88]

@@remkojerphanion4686 Not so much, Sir, not so much...there is few practical questions to solve 🙂