Author Topic: Oregon LPX vs LGX chain  (Read 6804 times)

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Offline SawTroll

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Re: Oregon LPX vs LGX chain
« on: November 04, 2016, 01:53:46 pm »
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.


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.

 

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