mixing ratios for 2 stroke chainsaws

[bwalker]

Are you talking about Stihl or Husqvarna engineers ?

I'm talking about you... you didn't even know that in a 2 cycle oil is deposited in the crankcase as soon as it enters.

 

[Ethobling]

Exactly...

While I greatly appreciate the information you have provided, you should still treat people with more respect.

I know you get frustrated with people wanting easy answers or not citing information for their point of view, but try to understand we all start somewhere.

Again, I appreciate you being here and giving us some of the information you have.

 

[bwalker]

While I greatly appreciate the information you have provided, you should still treat people with more respect.

I know you get frustrated with people wanting easy answers or not citing information for their point of view, but try to understand we all start somewhere.

Again, I appreciate you being here and giving us some of the information you have.

Everyone on those board is woefully ignorant on certain topics. This is fine. What's not fine is when you are woefully ignorant, but still find it prudent to opine. People that do that should not only not be respected, but should be ostracized until they shut up. If not the board gets bogged down with so many falsehoods and stupidity that it becomes of no value to anyone.
Make sense?
And for the butt hurt. File a hurt feelers report.

 

[bwalker]

No smoke when you tune your equipment to the mix.

Exactly.

 

[bwalker]

Yep. I can tell from this thread that the people who make this stuff don't know a damn thing about it.

And engineer designed the Tacoma Narrows bridge..

 

[huskihl]

Everyone on those board is woefully ignorant on certain topics. This is fine. What's not fine is when you are woefully ignorant, but still find it prudent to opine. People that do that should not only not be respected, but should be ostracized until they shut up. If not the board gets bogged down with so many falsehoods and stupidity that it becomes of no value to anyone.
Make sense?
And for the butt hurt. File a hurt feelers report.

It also grows tiresome when we post pics of our findings multiple times and every time another newb comes along we have to go through it all again. They forget (or refuse to do the math) that their 30 year old 028 that still runs perfect on 50:1 only has 300 hours of cut time on it.

 

[ZeroJunk]

I'm talking about you... you didn't even know that in a 2 cycle oil is deposited in the crankcase as soon as it enters.

Curious how you arrived at that. I only worked on about 20 pieces of Stihl today. It is what I do you know.

 

[link]

It also grows tiresome when we post pics of our findings multiple times and every time another newb comes along we have to go through it all again. They forget (or refuse to do the math) that their 30 year old 028 that still runs perfect on 50:1 only has 300 hours of cut time on it.

Id say its a privilege, if someone wants your comment again and again.

 

[Bob Hedgecutter]

It also grows tiresome when we post pics of our findings multiple times and every time another newb comes along we have to go through it all again. They forget (or refuse to do the math) that their 30 year old 028 that still runs perfect on 50:1 only has 300 hours of cut time on it.

You think chainsaws and fuel mix newbies are bad? Try beekeeping and coming with 40 odd years of experience versus some first season beehaver with a thousand hours of youtube videos watched!
Then you will learn about banging your head on brick walls!

 

[huskihl]

Id say its a privilege, if someone wants your comment again and again.

Most don’t want it. They just want to defend their own baseless opinion

 

[huskihl]

You think chainsaws and fuel mix newbies are bad? Try beekeeping and coming with 40 odd years of experience versus some first season beehaver with a thousand hours of youtube videos watched!
Then you will learn about banging your head on brick walls!

That sounds terribly similar. No doubt

 

[bwalker]

It also grows tiresome when we post pics of our findings multiple times and every time another newb comes along we have to go through it all again. They forget (or refuse to do the math) that their 30 year old 028 that still runs perfect on 50:1 only has 300 hours of cut time on it.

 

[bwalker]

Curious how you arrived at that. I only worked on about 20 pieces of Stihl today. It is what I do you know.

Your own words...
And sorry, I'm not impressed. Chainsaws are so simple that most guys can work on them.

 

[camel2019]

Curious how you arrived at that. I only worked on about 20 pieces of Stihl today. It is what I do you know.

Yay for you and I can rebuild the top end on most pro saws in about 20 min as long as the piston clips cooperate. You wouldn’t have to work on so much equipment if the company you support so much would design things better stop producing in China and find a better oil company to supply them.

 

[Piotr Pakuła]

one oil fumes more and the other less

 

[ZeroJunk]

Your own words...
And sorry, I'm not impressed. Chainsaws are so simple that most guys can work on them.

You can quote something I said if you like. I simply said that if scavaging 20% more fresh air was 20 % less oil in the crankcase made sense. Duh.

In the meantime. You have a strong emotional belief that some bearing failures you have seen would not have happened with more oil in the mix.

The only thing I am saying is that without a test group it is just something you believe.

The manufacturers who test this stuff out the ying yang don't seem to agree with you.

I never even said you were wrong. Just pointing out the scientific method.

 

[rogue60]

I did some work at a steal dealer not long ago yup all day cleaning blocked spark arresters that ultra **** is good for business lol

 

[bwalker]

You can quote something I said if you like. I simply said that if scavaging 20% more fresh air was 20 % less oil in the crankcase made sense. Duh.

In the meantime. You have a strong emotional belief that some bearing failures you have seen would not have happened with more oil in the mix.

The only thing I am saying is that without a test group it is just something you believe.

The manufacturers who test this stuff out the ying yang don't seem to agree with you.

I never even said you were wrong. Just pointing out the scientific method.

Manufacturers drop lemons all the time.
And that's not what you said... just admit they didn't tell you that in Stihl school..

 

[buzz sawyer]

Interesting video. I noticed he ran the saw just on the edge of 4 stroking in both tests. I think he should have re-adjusted the carb for the same max rpm in each test. Oil burns more slowly than gas. It only burns hotter if the heat is there to burn it. I would also like to have seen it run on 16:1 - should have been even hotter, right? 80:1 should be even cooler, right? That being said, is the difference in temps shown really something to be concerned with?

 

[bwalker]

Interesting video. I noticed he ran the saw just on the edge of 4 stroking in both tests. I think he should have re-adjusted the carb for the same max rpm in each test. Oil burns more slowly than gas. It only burns hotter if the heat is there to burn it. I would also like to have seen it run on 16:1 - should have been even hotter, right? 80:1 should be even cooler, right? That being said, is the difference in temps shown really something to be concerned with?

Good points. 80 degrees is peanuts and maybe within the margin of error for the tach.
I wouldn't assume oil burns any slower than gasoline. Also keep in mind the oil is present in the combustion chamber as a liquid that is sitting on the surfaces of the piston crown, cylinder wall, etc. It only combusts once the main flame has started and the heat generated vaporizes it. As you mentioned the oil only combusts if the heat of combustion is such that it can heat the oil up past its end point. That's why rich carb tuning causes oil to be expelled in the exhaust.