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#Post#: 74198--------------------------------------------------
Oregon LPX vs LGX chain
By: John Mc Date: November 2, 2016, 1:08 pm
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Some time ago, I tried comparing Oregon LPX vs LGX chain. It was
just informal, which feels smoother, seems faster, bore cuts
better. I took some notes, but can't find them. My recollection
was that the LGX might have cut a little faster, but the LPX was
nicer when bore cutting: just as fast, possibly faster when bore
cutting (which seems weird, given the bumper near the depth
gauge).
I'm curious where some of you guys might choose one style over
the other (I'm not really interested in the Stihl vs Orgeon vs
Woodland Pro/Carlton debate at this point. I just would like
opinions on LGX vs LPX
#Post#: 74200--------------------------------------------------
Re: Oregon LPX vs LGX chain
By: Cut4fun Date: November 2, 2016, 1:19 pm
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I like the 20LPX now over the 33LG I used to run. 325
Dont recall using it in 3/8
#Post#: 74201--------------------------------------------------
Re: Oregon LPX vs LGX chain
By: John Mc Date: November 2, 2016, 4:11 pm
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I use the 21LPX on my .325 saws. When it first came out (I
believe as the 21LP?) it seemed noticeably faster in bore cuts
than the 34LG I had been using, and maybe a bit faster in
bucking cuts as well, but I never timed it.
I'm wondering if it's the same thing with 72LGX vs 72LPX.
#Post#: 74202--------------------------------------------------
Re: Oregon LPX vs LGX chain
By: HolmenTree Date: November 2, 2016, 4:19 pm
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Back in the day LPX and LGX were originally called LP and LG
In 1972 Oregon introduced the LP as Super 70 Series 3/8" pitch
anti-kickback chain.
10 years later in 1982 they introduced the LG. Two years earlier
our logging camp was picked to field test the LG chain, led by
field engineer Gary Walrath from West Linn, Oregon.
After running the LP chain for years 8 hours a day us fallers
noticed how much faster and smoother the LG was. We felled,
limbed and topped spruce and jack pine into tree length for
piecework production.
When a chain moves in the kerf with its porpoise cutting action
the LG safety ramp depth gauge is always doing its job
protecting the cutter bit. The LP's safety ramp which is
seperate from the cutter and on top of the drive link doesn't
offer the same level of protection. Also the straight fronted
LP depth gauge also has no protection coverage from the side.
The LP ramp drive link is more of a optical illusion.
#Post#: 74216--------------------------------------------------
Re: Oregon LPX vs LGX chain
By: HolmenTree Date: November 3, 2016, 10:33 am
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Speaking of optical illusions here's a pic I took with my phone
off my laptop.
This is a Stihl 36RM chain from the 1980's from a fellow from
Germany. Hand filing sure wasn't his best skill. Look at the
rear sloped side plate angle with no hook what so ever . No
wonder why the side links are wore out from all the down
pressure to make that chain cut. :o
The RS chain also had the same ramped side link directly in
front of the depth gauge. A design that was discontinued in the
1990's.
In 1989 I asked Hans Peter Stihl about the RS/RM "anti kickback
side link" comparing it to Oregon's LG ramped depth gauge.
He replied "the hump back side link is just a optical illusion."
Years later the RS/RM chain design as we know today was
introduced, and the humpback was a thing of the past.
#Post#: 74241--------------------------------------------------
Re: Oregon LPX vs LGX chain
By: SawTroll Date: November 4, 2016, 12:32 pm
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[quote author=John Mc link=topic=6159.msg74201#msg74201
date=1478121063]
I use the 21LPX on my .325 saws. When it first came out (I
believe as the 21LP?) it seemed noticeably faster in bore cuts
than the 34LG I had been using, and maybe a bit faster in
bucking cuts as well, but I never timed it.
I'm wondering if it's the same thing with 72LGX vs 72LPX.
[/quote]
Oregon once used to make a big point of 20 series LP
outperforming 30 series LG in all kinds of cutting, including
bore-cutting. This was in the early 2000s, when they were about
to discontinue the 30 series LG.
72 LGX vs. 72LPX hardly is exactly the same relation, as the 30
series LG may suffer from the lower profile vs. 20 series LP,
while this is not the case with 72LGX vs. LPX.
Regarding 73LPX vs. 73LGX (I use .058) I have made some
deliberate comparisons, but not by any means scientific ones -
and imo the LPX is the better chain in all respects, by a narrow
margin. What mainly is better is smoothness and bore-cutting. I
happily use both (+ Stihl RS/RSC). Something I haven't tried is
bars over 24" - the LGX (and RS/RSC) may have an advantage when
chip clearing becomes an issue?
If I did a lot of bore-cutting, I would make an effort to have
LP/LPX on the saw though. Good ol' Frank Crofter surely was
right about what works best for that.
#Post#: 74242--------------------------------------------------
Re: Oregon LPX vs LGX chain
By: SawTroll Date: November 4, 2016, 12:53 pm
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[quote author=HolmenTree link=topic=6159.msg74202#msg74202
date=1478121540]
Back in the day LPX and LGX were originally called LP and LG
In 1972 Oregon introduced the LP as Super 70 Series 3/8" pitch
anti-kickback chain.
10 years later in 1982 they introduced the LG. Two years earlier
our logging camp was picked to field test the LG chain, led by
field engineer Gary Walrath from West Linn, Oregon.
After running the LP chain for years 8 hours a day us fallers
noticed how much faster and smoother the LG was. We felled,
limbed and topped spruce and jack pine into tree length for
piecework production.
When a chain moves in the kerf with its porpoise cutting action
the LG safety ramp depth gauge is always doing its job
protecting the cutter bit. The LP's safety ramp which is
seperate from the cutter and on top of the drive link doesn't
offer the same level of protection. Also the straight fronted
LP depth gauge also has no protection coverage from the side.
The LP ramp drive link is more of a optical illusion.
[/quote]
That was their marketing then - seemingly totally opposite of
the marketing in .325 a couple of decades later. ;D
If the LG was so much better in 1982, why is the LP(X) still
made today?
It certainly isn't about kickback protection - both are "yellow"
chain despite they both offer some kickback production (as is
the case with many other chain models). On the LG/LGX (and
RSC/RS) the kickback protection is the large ramped rakers, on
LP/LPX it is the ramps on the drivers.
#Post#: 74243--------------------------------------------------
Re: Oregon LPX vs LGX chain
By: John Mc Date: November 4, 2016, 2:23 pm
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Cut4Fun, SawTroll & HolmenTree, thanks for sharing your
thoughts. I may have to just compare a loop of each and see if I
can tell a difference. I don;t cut enough that maximizing
production is really a concern (especially for what I assume if
a fairly minor difference in performance). However, I am
curious, and do a fair bit of bore cutting, so if there is a
difference there, it may be worth checking in to.
BTW, SawTroll - I use .058 gauge as well. I just wrote down the
wrong numbers. Funny how the preference between 050 and 058
seems to be such a regional thing. Everyone around here runs 058
(unless they are running Stihl equipment). In other areas of the
country, folks seem to prefer the 050.
#Post#: 74244--------------------------------------------------
Re: Oregon LPX vs LGX chain
By: Efisher26 Date: November 4, 2016, 4:01 pm
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I recall some one saying somthing about Oregon vanguard chain,
how it's the best of 2 worlds, speed and smooth cut. has anyone
used it?
-•------------------------------------------------------------
Just a home owner that likes the older better made machines
Craftsman 3.7
Echo 290evl
Husqvarna 36
#Post#: 74245--------------------------------------------------
Re: Oregon LPX vs LGX chain
By: Chainsawrepair Date: November 4, 2016, 4:08 pm
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[quote author=Efisher26 link=topic=6159.msg74244#msg74244
date=1478293290]
I recall some one saying somthing about Oregon vanguard chain,
how it's the best of 2 worlds, speed and smooth cut. has anyone
used it?
-•------------------------------------------------------------
Just a home owner that likes the older better made machines
Craftsman 3.7
Echo 290evl
Husqvarna 36
[/quote]
Vanguard to me is root cutting chain for a chain I dont care
about. I would never ever buy it.
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