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stihl rm vs rs chains---which one and why?

demc570

demc570

ArboristSite Guru
Joined
Dec 30, 2012
Messages
951
i always use rs or rsk,but never rm........i heard rm stays sharp longer..anyone use both that could compare? thanks
 
mopar3

mopar3

ArboristSite Operative
Joined
Feb 13, 2013
Messages
186
Location
NH
The Rm does stay sharp a little longer but Rs cuts faster and smoother. In clean wood it's a wash.


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demc570

demc570

ArboristSite Guru
Joined
Dec 30, 2012
Messages
951
thanks i never have tried the rm and looking to buy few more chains either the rs,rsk, or try the rm... i hand sharpen all my chains so didnt know if rm was harder to sharpen,or just stay with my rsk on the ms 361 with 3/8 and what .325 on 028 av woodboss?
 
dingeryote

dingeryote

Blueberry Baron
Joined
Nov 21, 2008
Messages
13,604
Location
Michigan
Try a loop of RM, and keep it handy as a spare.

Even if you think the speed is off in the cut, over the course of a couple tanks it will even out with less filing time, especially in dirty wood and stuff growing alongside roads and farm fields.

Best part is, RM is very forgiving of the file bieng a bit off when field filing. It's hard to screw up.

In the long run, it's a good tool to have in the box, for when it's needed, and adequate for when it's not.
 
longbowch

longbowch

ArboristSite Guru
Joined
Aug 27, 2012
Messages
626
Location
Blue Grass Ia
I cut for firewood and almost all of what I cut is dead and dry. I rarely cut clean green wood. That being said, I use both types of chains only because I have both.
I definetly prefer rm, it stays sharp longer and is easy to sharpen. When you are out in the woods cutting by yourself you wont notice if it is any slower and in the long run it will actually be faster
because it stays sharp longer. Unless you are cutting cookies racing your friends give it a try. It might be the cheapest part of CAD.
 
luckydozenfarm

luckydozenfarm

THE MAN OF STIHL
Joined
May 7, 2013
Messages
447
Age
43
Location
Hockley, Texas
I use the RS chain exclusively on my larger felling and bucking saws, MS440, MS660...however I use RM chain on my limbing saws like my MS250's due to the lower kickback and initial bite. When I get a tree down and I'm usually cutting in awkward positions as I make my way down the tree, I don't want the saw jumping around at all. I find there isn't much difference in cutting speed, maybe +/- 1 second through a 25" log?? The RM chains (esp the low-kickback chains) are the best in a de-limbing a downed tree.
 
513yj

513yj

ArboristSite Operative
Joined
Jan 26, 2013
Messages
396
Location
Upper Peninsula MI
I use the RS chain for everything but I always carry a handful of hand files and spare chains. I thought I used to buy RSC but maybe they changed the name or my new dealer sells different stuff but it still has the yellow links.
 
DonnerParty

DonnerParty

ArboristSite Operative
Joined
Dec 27, 2013
Messages
141
Location
Sierra Nevada Mountains
I cut mostly big softwoods (pine, fir). A properly sharpened full-chisel (RS) chain cuts noticeably faster, for me, on my saws, in the wood I cut. "Properly sharpened" is the key. Semi-chisel is a big more forgiving when sharpening and if you are hitting the ground, but is certainly slower. On full-chisel, once that leading corner is dull, the chain won't cut well, period.
 
mdavlee

mdavlee

Tree Freak
Joined
Apr 18, 2008
Messages
18,140
Location
tn
I use the RS chain exclusively on my larger felling and bucking saws, MS440, MS660...however I use RM chain on my limbing saws like my MS250's due to the lower kickback and initial bite. When I get a tree down and I'm usually cutting in awkward positions as I make my way down the tree, I don't want the saw jumping around at all. I find there isn't much difference in cutting speed, maybe +/- 1 second through a 25" log?? The RM chains (esp the low-kickback chains) are the best in a de-limbing a downed tree.
I've never noticed chisel to be any more jumpy when limbing than semi chisel. If you're using full skip then that could be the reason.
 
sunfish

sunfish

Fish Head
Joined
Jul 12, 2010
Messages
14,307
Location
Success Missouri
I cut mostly big softwoods (pine, fir). A properly sharpened full-chisel (RS) chain cuts noticeably faster, for me, on my saws, in the wood I cut. "Properly sharpened" is the key. Semi-chisel is a big more forgiving when sharpening and if you are hitting the ground, but is certainly slower. On full-chisel, once that leading corner is dull, the chain won't cut well, period.
Chisel does cut faster in soft woods. But not so much diff in hard woods.
 
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