[bemused]

so-o-o...

now that I'm playing at landed gentry out here on Bemused Acres, I gots me sum 2-stroke imp-plee-mints: namely, a chainsaw & a brushcutter. naturally, they call for different mix ratios (only ever had 1 gas device at a time before, so this wasn't an issue).

question: just how finicky are two-strokes about an EXACT mix of oil/gas? for example, the chainsaw calls for 45:1, the cutter wants 50:1-- can I split the difference, and avoid having two separate gascans? or will I fry one & gum up the other if I try it?

thanx in advance... all opinions / advice / verbal abuse / shameless thread hijacks / sexual innuendoes welcome.

[Kham]

on sexual innu.... whatever, how is the sex life? heheh...

long time no talk. where have you been?

[bemused]

Originally posted by Kham


on sexual innu.... whatever, how is the sex life? heheh...

long time no talk. where have you been?

great!

and... Oregon!

how's things in your world?

[Brian_C6]

45:1 and 50:1 is so close it shouldn't matter. I would mix 45:1 and use that mix in the 50:1 motor.

50:1 and 32:1.... that is a big gap and you run the risk of blowing the engine. If you absolutely HAD to use the same mix, you are better off using too much oil, than too little. Extra oil woul basically cause the motor to run rich and the worse (short term case) that would happen would be fouling a plug. Not enough oil would cause improper lubrication and build up friction... causing over heating and eventually cease.

Brian

[bemused]

Originally posted by Brian_C6
45:1 and 50:1 is so close it shouldn't matter. I would mix 45:1 and use that mix in the 50:1 motor.

50:1 and 32:1.... that is a big gap and you run the risk of blowing the engine. If you absolutely HAD to use the same mix, you are better off using too much oil, than too little. Extra oil woul basically cause the motor to run rich and the worse (short term case) would be possibly fouling a plug. Not enough oil would cause improper lubrication and build up friction... causing over heating and eventually blow.

Brian

tanks, mang-- just the kinda answer I was looking for.

(assuming, of course, that you didn't just make it up to blow smoke up my ass... )

[benVFR]

As an aside what is the design constraint that determines how much oil you need in the mix?

Is this just a carbueration issue? A leaner running 2-stroke will require more oil in the fuel? Or the other way around.

Brian I'm guessing you know the answer to this?

[JeffL]

Originally posted by bemused
tanks, mang-- just the kinda answer I was looking for.

(assuming, of course, that you didn't just make it up to blow smoke up my ass... )

Nah, you'd rather be on the safe side and mix in more oil (45:1), then at the very worst you are running a bit rich and smoky, but at least the engines not gonna overheat or sieze.

[Kham]

Originally posted by bemused
great!

and... Oregon!

how's things in your world?

not good. slowly fading away and will all end some day.

[ChR1s]

more oil = more oil, and less fuel. Therefore, a leaner air:fuel mixture is the result. Unburned oil is unburned oil, not "running rich."

[FireFly]

The ratios are so close , it probably wont matter. If you use a 50:1 ratio in both and the one that calls for a 45:1 ratio smokes (probably wont) then you know know its a picky motor. Correct me if im wrong but in my opinion I think it would be better to risk having a little extra oil in a two stroke then not enough. Just my 2 cents

[RandyO]

I have always heard that it's better to run less oil than more oil in a 2 stroke, extra oil is more likely to foul plugs and carbon exaust and just make it not run good by interfering with spark and restricting the exaust, carbon deposits will make it more likely to overheat & seize, its the fuel oil mixture that doing the lubricating, a small amount of oil is added to the gas as lubrication addatives

rich/lean is fuel/air, oil don't make a difference


I run 50:1 in everything I own that is 2 stroke.... which isn't much, a Husquvarna chain saw and a royobi hammer drill, don't know what mixture they call for

[R7]

Originally posted by RandyO
I have always heard that it's better to run less oil than more oil in a 2 stroke, extra oil is more likely to foul plugs and carbon exaust and just make it not run good by interfering with spark

Exactly my theory as well. I use the same gas/oil mix for my chain saw, weed wacker and my pocketbike. Motul 800 2T Synthetic at a 50:1 ratio.

Also when I had a 2-stroke quad, I used a 50:1 mixture even though the manual called for 32:1. I'm sure using a good quality oil helps a lot though. My first Banshee (1987) was 8 years old before I even took the head off it mixxing it at 50:1

[jeffR1]

I use the same mix ,a 50:1 ratio in my chain saw , brush cutter and my kids CR85 . no problems in any of them .

[Phate]

I use the same for my weedwacker and chainsaw and its all good as well. I would split the difference of the 45-1 and 50-1 but whatever you do you should be fine. Just watch the smoke on each machine and how they are running to make sure.

[theothersean]

I run 50:1 on my 5 speed kick start ass dildo and it seems to run just fine. I'm thinking of adding an oil injector for extra lubrication, but not for the motor....................


Oh and jeff, how the hell have you been? Say hi to fratiti (sp?)
for me.

[rmbbikes]

My girls Pussy Basher 2000 uses 32 to 1 and my Ice Auger uses 24 to 1 and I run the Ice Auger gas in the Pussy Basher 2000 and it smokes a little more but it's all good. It disguises the smoke coming out of other places!!

KB

[beet]

jefffffffffffffffffffffffffffffffff ive ran gas only in my vespa as a kid
dont do this .

[bemused]

Originally posted by theothersean
I run 50:1 on my 5 speed kick start ass dildo and it seems to run just fine. I'm thinking of adding an oil injector for extra lubrication, but not for the motor....................


Oh and jeff, how the hell have you been? Say hi to fratiti (sp?)
for me.

Sean, ya ole bastich!

I'm doing good, Pratiti's doing good, and the RF is just an oil change away from being back on the road this weekend. s'pose to hit 60 today, I'm jonesin' to be on two wheels again.

how's by you and Leah (sp?)?

to all that answered: thanx for putting my mind to rest about this. knew I could count on y'all for a motor-related question...

[Stoneman]

I always like a bit of chicken broth mixed in with smashed potatoes...

[legalspeed]

I never measure anymore.

If you want some extra kick, not so much oil.

[bemused]

Originally posted by Stoneman
I always like a bit of chicken broth mixed in with smashed potatoes...

no you don't.

not always ...

[Stoneman]

Originally posted by bemused
no you don't.

not always ...

...yeah, you're right. Not ALWAYS...

[SSearchVT]

If it's a toss up between 32:1 and 50:1, I go towards the 32:1. More importantly - don't use old pre-mix in a 2 stroke. If I have old pre-mix I mix it about 50/50 with the regular gas for my push mower or riding mower (both are ancient - so a little oil won't hurt anything) to use it up and run fresh pre-mix through the 2 stroke motors.