661 Oil Test 32:1 vs 40:1 vs 50:1 ?

[bwalker]

But marketing has progressed nicely...
LOL...

The chainsaw OEM oils have gotten better, but only because they were so low quality before. The fact of the matter is the technology present in the best oils available existed and was in use twenty years ago.

 

[SCHallenger]

True, but it rarely gets above 3-4'' up here.

Where are you two located? I've seen some ironwood up there (don't remember exactly where) that was in the 7-9in. category. I've never cut it, but I've heard that it's harder than your MIL's head!

 

[windthrown]

How are Cottonwoods hard on chainsaws? It cuts like pulp. Now I don't care to burn it, as it burns like paper, the same can be said about pretty much all poplar spices. Black Locusts is pretty dense, but the rest of the spices you mentioned cut fairly easily. Sorry it really sounds like you haven't cut much wood that is actually hard.

Remember we don't have the rain or the soil you do, our trees generally grow much slower.

Here's a picture of a Magnolia we have, this is about as far north as I know them to grow.

Black cottonwood here is really hard on saws, especially old growth. Ask anyone that has salvage cut it after floods. Also I live at elevation here in the Cascades, and we are well above the 45th parallel. The seasons are not so long here. And if you want to talk about density, I will put western warm growing Eucalyptus, California live oak and Madrone up against your so-called dense cold growing hardwoods back east.

 

[Deleted member 83629]

hedge ,iron wood, black locust can be nightmares to cut here they will throw sparks and that is with a sharp chain.
and hedge is a PITA to split i got some DEAD seasoned hedge last year i thought dynamite would blow it apart better.

 

[KenJax Tree]

I don't like the looks of this

This is out of my new Redmax edger with a non adjustable carb....42:1 Yamalube 2R

 

[mdavlee]

I don't like the looks of this

This is out of my new Redmax edger with a non adjustable carb....42:1 Yamalube 2R

Picture is a little blurry. What's the problem?

 

[KenJax Tree]

Its a nice greyish white color

 

[KenJax Tree]

Here is a better one

 

[Andyshine77]

Here is a better one

That looks spot on to me.

 

[KenJax Tree]

Maybe it is, im just used to a litttle more brown....thats with a little less than 2 tanks through it

 

[KG441c]

Autotune?

 

[KenJax Tree]

No not autotune just non adjustable, it only has an idle screw.

 

[KG441c]

No not autotune just non adjustable, it only has an idle screw.

Looks good! What oil?

 

[KenJax Tree]

yamalube 2R 42:1

 

[KG441c]

How r u liking the R2

 

[KenJax Tree]

How r u liking the R2

I like it. It seems to be leave a better film than Lucas and is the same price, so i'll use it over Lucas.

I still haven't used the Honda HP2 i got which is full synthetic...have you ever used it? Thoughts if you have?

 

[KG441c]

I like it. It seems to be leave a better film than Lucas and is the same price, so i'll use it over Lucas.
I r
I still haven't used the Honda HP2 i got which is full synthetic...have you ever used it? Thoughts if you have?

I raced my 2002 yz250 with hp2 at 32to1 with 0 issues. I like hp2 but havent ran it in a saw

 

[Trx250r180]

yamalube leaves black goo on the edge of my plugs too

 

[mdavlee]

Color looks pretty good to me. The wet goo probably doesn't hurt anything. How did the super M do? I may get some of it to try soon. It is local and cheap.

I was talking to a guy at a bike shop and he said HP 2 was good stuff. I've been meaning to try it out myself.

 

[Miles86]

Hey-

Notice that every factory oil for saws is sae 20 wt. (aka "injector" oil). I think this is due to the carburetor setup at the factory. A heavy oil like k2 or 800T (sae 40wt) might cause a need to slightly richen the tuning to compensate for the change in specific gravity (density) of the fuel mix? It probably wouldn't be noticed.
http://www.racegas.com/article/26
https://www.motul.com/system/product_descriptions/technical_data_sheets/77794/original/800_2T_Factory_Line_Off_Road_TDS_(GB).pdf?1388420010
http://www.echo-usa.com/getattachment/d5e66496-3079-4374-82c2-ad427eb044e2
http://www.maxima.co.jp/images/msds/2stroke/FormulaK2.pdf

Motul oil has higher specific gravity than typical factory oil (echo) and also higher than K2.
Factory must feel the lighter oil is adequate (for warranty at least)?

I couldn't edit this so I had to quote it sorry-
I should have written " a higher specific gravity oil would run richer than a lower specific gravity oil", so the carb would need a slightly leaner setting with the higher specific gravity oil, I wrote my thought backwards.

Just for the heck:
spec gravity :
lawnboy ashless- .865
Motul 800- .911
Max K2 - .86
Echo red armor - .88
Belray MC-1 - .92
Belray H1R - .959
Stihl Ultra - .93
Hsqvrna XP - .86
Opti 2 - .874
Citgo/mystic sea/snow - .87
Mercury Quicksilver PWC - .87

Also viscosity and specific gravity are not related - or to say- a 40wt oil is not necessarily a higher density than a 20wt oil.