Gauging Bar Groove Wear?

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Gypo Logger

Gypo Logger

Timber Baron
Joined
Dec 8, 2001
Messages
16,788
Location
Yukon Territory
Well, I took my own advice and went out and measured everything. The drivers on a new chain measure in at .062" The bar groove width measures with a caliper at .075-.080". So the clearance (slop) is about .013-.018". Are there any bar specs that would set a limit to this?

Thanks,

Steve
Oregon states that 8 thou is the allowable tolerance.
Its interesting to note that most saw racers use 1.3 chain in 1.5 bars.
 
BeatCJ
Joined
Nov 4, 2014
Messages
698
Location
SW Washington State
I tried this test with a new chain and the bar is at the end of its useful life. There is a small amount of daylight under the straightedge at the front of the cutter but none at the sharpening indicator at the back of the cutter.

Any suggestions for good aftermarket bars for a Stihl 028AV? Carlton? Forrester? Cheapest place to get them?
I just got a bar from this thread for quite a bit less than I could get a bar at my local Stihl dealer. NOS Stihl Mount Bars
Then I went and got the chain locally. Jon1212 was good to deal with.
 

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