powering a 36in bar.....?

[ehp]

On my test guys is it ok if i drop the bar size down to 28 inch for the husky and dolmar and 25 inch for the stihl's , that is the longest bar i have for 3/8's chain for a stihl,have longer but is .404


i will see tomorrow on how things go
i have a 066 dual muffler ports to run as well , i am trying to get Bob's 385 as well

 

[Gypo Logger]

Ed, how do you expect to keep up with me on that 300 acres in Parry Sound, falling those 24" Lucious Yellow Birch and the 32" White Pines without a 36" bar on the Dolmar?
Not a problem though, you start at 5 am., I'll start at noon. Or I could just sub it out to N.B Logger and Bullock and stay on the landing bucking out the logs and making posts on AB with a lap top.
John

 

[ehp]

Gypo there will not be any trees there that i cannot fall with a 24 inch bar, if they are over 55 inches on the stump then a will go to a 28 inch but somehow i donot think so because normally when they get that big they are hollow in the centre, hey but good news oak is up right now so she is time to cut it

 

[ehp]

well it is not as big as you guys wanted but it was a good tesy for the saws, I will need to go down to Gypo's to get some bigger bars and bigger trees,
I have bigger butts but they are not good for testing times in cause every inch you get farther from the stump the softer the wood gets so i found a real nice piece of maple that was 22 inches in diameter and no taper so it held its size to be the same for every saw, I square filed 1 chain all saws used it, I modded the bar for the stihl's so they used that same chain .058 gauge
I made 2 cuts with each saw and used the fastest time here
the log was in a stand so easy to cut, some saws had there spikes still on but no trouble cutting the cookie off.This is what happened no Bullsh!t,
066, dual port , stock but very fast ,my old race saw 5.06
460 ehp runs good but still needs more time on it 4.93
7900 stock brand new made 20 cuts before run 6.12
385 stock 6 months old, here to get ported 6.39
371 ehp ,lots of time on this motor , runs great 4.81
7900 ehp, less than 2 tanks of gas threw it 4.29
7900ehp, the same amount of gas as the other one 4.24
3120ehp, it needed to have the rackers cut more 3.98
all saws had a 8 pin gear on them, I will port the 385 and see how it does , the 3120 i know would go faster with the rackers cut more but then the other saws would not be able to pull it,
the wood was what the mills here call Silver maple , it is softer than rock maple but still hard

 

[Hunter]

Those are some great comparisons Ed.
Looks like the 7900's are doing a pretty good job. That 046 is a Fast one to.
I appreciate the stright up comparison.
Hunter

P.S. It will be interested to see what you get out of the 385.

 

[Crofter]

Ed that must be a pretty "educated" 371 if it is ahead of the 066 in 22 inch wood! Do you remember how it compares timewise in 12 inch wood? Pretty nice times on the the 7900's........ lets see now, what kind of a story could I make up to convince momma I need a faster saw!

Frank

 

[ehp]

Crofter the 371 is pretty loss , she has some hours on her but it screams, I took a cloth tape with me this time and took the bark off , it was a little oval , 61 inches around so it works out i guess around 20 inch of solid wood, plus i am at the small end now but it had very little taper, I was surprized at how the wood cut though ,it cut fast and i know if i had rock maple the times would be slower by a couple of seconds i would think,

The 385 ported went down to 4.34 seconds, it works well now , Bob the guy who owns it came over and ran it , he is happy now, he also owns the 3120,


Itook the 460 and the 371 and drop down to a 7 pin on them ,the 371 ran a 4.73 so a little faster but not much , the 460 cut alot better 4.66, the 8 pin was just holding her down to much


Bob is cutting some 50 to 60 inch oak this week so he may bring me home some bigger wood to play on, it must be big, Friday
they got 22 trees out with a 518 Cat skidder

 

[Hunter]

Ed,
Looks like you can work wonders on the 385 as well.
It really made a big differance in the saw.
Hunter

 

[ehp]

yes but these guys want to see a 36 inch bar , I donot have one ,my dealers donot have any that take 3/8 chain,
i will have to go down to Gypo's and steal one from him



I got to work on a 335xpt today , all i did was open up the muffler and get rid of the limiters on the carb, surprized the hell out of me , it run and cut pretty good, I would of timing it in the log but i would of had to go right around the log to get the cookie off, it is only got a 12 or 13 inch bar on it

 

[Gypo Logger]

Hey Ed, thanks for the heads up about the 335. You just saved me and a few others the time and expense of sending one out to a saw builder.
I have a brandnew one here, never started, but just for ????s and giggles, could you build me a pipe for it?
John

 

[rahtreelimbs]

Those who have experienced running a 36" bar on a 7900, is it running good or just good enough to get by? Kind of like comparing a 32" bar on an 044 vs. a 32" bar on an 066.

Also, are you running full-comp or full-skip chain on these 7900's?

 

[Hunter]

I have run my EHP7900 with a 36" bar quite a few times on big removals. I personally am running full skip square ground chain.
It cuts very smooth and fast for the long bar.
If I am in really hard wood, I drop down to the 7 pin sprocket and if softer wood, I use the 8 pin.
I have had no problems with it and it is not just getting by, it does have very good torque and really keeps the chips flying.
Hunter

 

[ehp]

Gypo , I have one ? for you , WHY IN THE HELL DO YOU WANT A PIPE FOR A 335, it can be done ,anything can be done if you want to


so when are we going to go to one of your bushes and cut one of those big maple into cookies, I only want to cut one that is veneer and worth alot of money,like a 4 ft on the top with a less than 1/3 heart and no defects , that should be worth a grand or better and am I paying for it , no why would I

 

[ehp]

one thing I think is a big factor is the oiling of the bar, on the newer stihl's how do you run a 36 inch bar, the 660's and 460's that i have had the honor running even stock would be hard pressed to put enough oil out to keep the bar in enough oil, now I know cutting different types of wood makes a difference, but in rock maple a 24 inch would be my limit with them , you are very close to burning the bar with the oiler wide open, now softer wood yes you can run a longer bar, Do you guys use a better grade of oil ? And do you guys leave that huge bar on all the time or just carry it with you and put it on when you need it ?

 

[sawracr]

Ed, a lot of us laughed when Gypo wanted Ken to pipe a 346...... noone is laughing now. Jon

 

[kf_tree]

i think "we" or at least "i" have a different idea of what powering a 36in bar means.

i think there's a difference between a loggers and a climbers needs.

i don't just want a saw that will spin a 36in bar i want a torque monster. reason being..... when standing on gaffs cutting chunks i want a saw that will pass right through the piece. when useing a less powerful saw i then have to run the saw one handed and push up on the wood with the other hand to keep the weight of the wood from pinching the bar. so i'd rather have a more powerful saw that i can keep both hands on and pass it right through on a horizontal cut.

i may be wrong but i view a logger as someone slapping notch's and making vertical cuts.

thanks for all the response's . i've decided to go with a 395 sprinkled with fairy dust.

 

[rbtree]

Hey Ken, long time no talk!

Why not get an 066 and buy a ported front muffler cover? Then if you open the stock port and maybe work on the inner cage baffle, the saw should cut like my old one...which is better than a 395 and a lot lighter.

Ken Dunn doesnt think that the 395 is as good a saw as the old 394, if I recall correctly.

If you dont mind these tips: Use a bar wrench, file, wedge or a Sandvik specialized tool to keep the kerf open; second, as the kerf is closing, work the bar back a bit, cutting a space in the closing kerf. Then when it closes, the bar will have some space to work the last bit of the cut without being pinched.

 

[kf_tree]

hey rb

i'm leaving july 1st to climb artesonraju (the paramount pictures trademark peak) plus there's some 15 pitch rock climbs over there. i'll send some pics when i get back.

as far as the saws go i'm partial to husky's. i've been happy with the 394's i've used in the past , and i heard the 395's are not as good. but when i compare the 066 to the 394 we have i'll pick up the 394 every time. it just feels more torquey to me. so i figure a 395 with some work done to it should handle my needs.

"If you dont mind these tips:"

hell i'll always take tips from you. i've been useing your 3/8 dowel trick lately and i also started using the prepacked wooden shims that home depot sells, you get around 20 for 1.25 hard to beat that.

 

[ehp]

By the sound of it you should of bought a 3120 or a 088 if you were looking for huge torque