Oregon 21A - presets?

[heimannm]

I broke this loop of Oregon 21A chain in order to shorten it, but come to find out none of my .325 presets will fit the holes in the drivers. I have a pretty good assortment of presets including some that are marked 21, but nothing will fit this chain.

If anyone can help me locate a preset or two I would certainly appreciate it.



Mark

 

[stihl livin]

@Philbert

 

[Philbert]

Never heard of 21A, specifically. Old chain?

.325 pitch, 0.058 gauge?

Is it for display or use?

Drive link holes too small? Drill them out? Tie strap holes OK?

STIHL .325 would be 0.063 gauge at top. Assume Carlton would be identical to Oregon.

Philbert

 

[Shane¹]

I broke this loop of Oregon 21A chain in order to shorten it, but come to find out none of my .325 presets will fit the holes in the drivers. I have a pretty good assortment of presets including some that are marked 21, but nothing will fit this chain.

If anyone can help me locate a preset or two I would certainly appreciate it.

View attachment 414488

Mark

I have some odd presets kicking around got any rough measurements or a part number to look for?

 

[heimannm]

The chain is .325 pitch, .058 gauge, and the hole in the driver is 0.1495" (#25 drill bit). All of the other .325 presets I have on hand are 0.159" at the bearing.

Mark