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

[KenJax Tree]

Bazooka bubble gum does the trick

 

[KG441c]

Bazooka bubble gum does the trick

Hubble Bubble better

 

[KenJax Tree]

Hubble Bubble better

Well, yeah for ported saws

 

[Moparmyway]

25:1 Motul 800 off road with VP SEF
.404 RM
Went and did 3 super hard Hickory stumps that had been sitting since the end of spring that were like granite. Sparks everywhere, tore up 3 chains

No where is there any excess oil or buildup

 

[bwalker]

25:1 Motul 800 off road with VP SEF
.404 RM
Went and did 3 super hard Hickory stumps that had been sitting since the end of spring that were like granite. Sparks everywhere, tore up 3 chains

No where is there any excess oil or buildup

I wouldn't expect any with that kinda load. I like your choice in ratio. Bwildered is going to say your killing yourself and your saw running that much oil,lol.

 

[Moparmyway]

I wouldn't expect any with that kinda load. I like your choice in ratio. Bwildered is going to say your killing yourself and your saw running that much oil,lol.

Thanks bwalker !
Bwildered or anyone else can say anything they wish ............. stumpin aint easy and the pictures show it

36" .404 full comp RM on a bloom of about 7 feet on the larger one .......... 5 feet on both of the others.
I used up 6 chains on the stumps, I have 3 to sharpen, and 3 to make into semi-skip due to the damage to the cutters from those 3. They were dropped in early July, didnt know Hickory stumps could get petrified in 3 months

Here is my Freak 066 ............ same mix, same Hickory trees. She is tuned to 13,500 and studdering like a MSD rev limiter. This one used 4 tanks and cut the big stuff laying around from when they were felled. Buried the 36" in the big one for about a dozen cuts, the other two had the tip sticking out a little

 

[bwalker]

Btw running a fuel with a distallation curve tailored to two cycles helps with unburnt oil in the exhaust. Something like avgas does the opposite.

 

[bwalker]

Thanks bwalker !
Bwildered or anyone else can say anything they wish ............. stumpin aint easy and the pictures show it

36" .404 full comp RM on a bloom of about 7 feet on the larger one .......... 5 feet on both of the others.
I used up 6 chains on the stumps, I have 3 to sharpen, and 3 to make into semi-skip due to the damage to the cutters from those 3. They were dropped in early July, didnt know Hickory stumps could get petrified in 3 months

Here is my Freak 066 ............ same mix, same Hickory trees. She is tuned to 13,500 and studdering like a MSD rev limiter. This one used 4 tanks and cut the big stuff laying around from when they were felled. Buried the 36" in the big one for about a dozen cuts, the other two had the tip sticking out a little

Dirt tearing up the chains? What about carbide?

 

[porsche965]

Wish I was there. The harder the better.

 

[Moparmyway]

I used to think the same porsche, but before I was done with the first stump, I was thinking to myself that this wood aint wood anymore.

I have cut black lucust that sat for a couple years and even that stuff didnt tear up .404 RM
Take a look at the 661 picture, I didnt even see it before, but that is what most of the cutters look like .............. there wasnt anything metal and no rocks, just rock hard wood. Guy said Hickory .............. should have said granite

 

[Moparmyway]

Dirt tearing up the chains? What about carbide?

Wasnt any dirt or rocks, just rock hard wood.
I could get me some carbide chain, but then I would have to get a diamond wheel to keep it sharp

** EDIT**
That might not be a bad idea, it will just have to wait untill after the Holidays

 

[porsche965]

I've had chains come out like that. Good testing ground to really see just what a saw is made of.
Still wish I was there to grind teeth with you!

 

[Bwildered]

for us non smoking guys that use saws most days, its just common sense to use a mix which is best for your health, then for the saw running a oil & ratio that doesn't produce flaking deposits that are going to erupt on a regular basis, then become lodged between piston & bore with may lead to scuffing, seems to be a no brainer too!
what hasn't been discussed is the added wear caused by the abrasive byproducts which comes with burning more oil than necessary, excessive oil consumption in engines causes premature piston, bore & ring wear, sure the bottom end will love the extra oil but its not an even trade off.
ta

 

[Bwildered]

I used to think the same porsche, but before I was done with the first stump, I was thinking to myself that this wood aint wood anymore.

I have cut black lucust that sat for a couple years and even that stuff didnt tear up .404 RM
Take a look at the 661 picture, I didnt even see it before, but that is what most of the cutters look like .............. there wasnt anything metal and no rocks, just rock hard wood. Guy said Hickory .............. should have said granite

I'm almost a fully qualified wood butcher & have never seen just wood do that to metal, especially the soft stuff you guys have!!!!!! LOL
thansk

 

[Trx250r180]

When cutting stumps 10 degree top plate like a millimg chain will last longer,also bore in and cut from inside out will keep the stump from pulling dirt in the whole cut like starting on the outside edge does.

 

[Moparmyway]

what hasn't been discussed is the added wear caused by the abrasive byproducts which comes with burning more oil than necessary, excessive oil consumption in engines causes premature piston, bore & ring wear, sure the bottom end will love the extra oil but its not an even trade off.
ta

Ok, I havent looked yet, but I will and I will take pics of the pistons and rings. I think you are a little off base here

I'm almost a fully qualified wood butcher & have never seen just wood do that to metal, especially the soft stuff you guys have!!!!!! LOL
thansk

Almost is a qualifier in your statement.
I get that you are in the land of Oz, but dont discount everything here as soft, especially since it sat for a season. There was nothing but wood, no rocks, no metal, just knots and wood ......................... thangst !!

When cutting stumps 10 degree top plate like a millimg chain will last longer,also bore in and cut from inside out will keep the stump from pulling dirt in the whole cut like starting on the outside edge does.

Couldnt bore into this stuff, the chain was just bouncing .....I try to bore every one first since you suggested that technique a few months back, it has made a difference, but not here..... had to dog in to start cutting.

I will file a couple of loops of RM to 10 degree top plates, didnt think of doing that. Thanks junk man, your advice is allways appreciated ........

 

[bwalker]

for us non smoking guys that use saws most days, its just common sense to use a mix which is best for your health, then for the saw running a oil & ratio that doesn't produce flaking deposits that are going to erupt on a regular basis, then become lodged between piston & bore with may lead to scuffing, seems to be a no brainer too!
what hasn't been discussed is the added wear caused by the abrasive byproducts which comes with burning more oil than necessary, excessive oil consumption in engines causes premature piston, bore & ring wear, sure the bottom end will love the extra oil but its not an even trade off.
ta

Once again you haven't a single clue what your talking about. Bravo!

 

[redbull660]

Thanks bwalker !
Bwildered or anyone else can say anything they wish ............. stumpin aint easy and the pictures show it

36" .404 full comp RM on a bloom of about 7 feet on the larger one .......... 5 feet on both of the others.
I used up 6 chains on the stumps, I have 3 to sharpen, and 3 to make into semi-skip due to the damage to the cutters from those 3. They were dropped in early July, didnt know Hickory stumps could get petrified in 3 months

Here is my Freak 066 ............ same mix, same Hickory trees. She is tuned to 13,500 and studdering like a MSD rev limiter. This one used 4 tanks and cut the big stuff laying around from when they were felled. Buried the 36" in the big one for about a dozen cuts, the other two had the tip sticking out a little

oh how I want to run this saw!

 

[Trx250r180]

440 hybrid with the finger ports and triple port muffler ,40 to 1 ,ethonol fuel ,could not get the camera to focus the top of the piston (i need the snap-on camera still has not got here yet ) but looking down the plug hole what i could see was top of piston carboned lightly ,could see machine marks on top of piston pretty clear ,the muffler is wet from idling before shut down ,i do not think with the 3 ports the muffler gets hot enough to burn the soot out ,but is seems to run good this way ,hard to see the piston top with a cel phone ,interesting thing when i checked the dumonde tech ,the muffler was not as sooty ,nor the exhaust port as black .The hours put on this plug were general tree felling and limbing ,the saw sits idling part of the time ,not run hard the whole time like when i mill . View attachment 451794

 

[Bwildered]

Ok, I havent looked yet, but I will and I will take pics of the pistons and rings. I think you are a little off base here


Almost is a qualifier in your statement.
I get that you are in the land of Oz, but dont discount everything here as soft, especially since it sat for a season. There was nothing but wood, no rocks, no metal, just knots and wood ......................... thangst !!



Couldnt bore into this stuff, the chain was just bouncing .....I try to bore every one first since you suggested that technique a few months back, it has made a difference, but not here..... had to dog in to start cutting.

I will file a couple of loops of RM to 10 degree top plates, didnt think of doing that. Thanks junk man, your advice is allways appreciated ........

I don't thing you're going to see anything abnormal looking in the bore early on in the life of a saw, cumulative wear takes time.
I might become a fully qualified wood butcher with another 30 years experience, if I live that long & can get a Zimmer frame into & around the workshop!
Something in your timber turned up that tooth the way it did & it looks typical of hitting a foreign object.
Thansk