372xpw vs 372xtorq vs 7900 felling saw

Arborist Forum

Help Support Arborist Forum:

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.
Joined
Oct 7, 2010
Messages
4,467
Location
IRELAND
Most guys call this torque, but I think it more accurate to say that the power band is wider and the saw will still pull real good when the RPM's drop a bit in bigger wood.

Torque - Wikipedia, the free encyclopedia

It is torque. Without torque, a saw can do zero work. Any time a turning force is applied, it can be measured in torque, often measured in ft lbs. In fact, the basic principles of distance and angular speed determine which pin sprockets you will use for your saw - you are determining how much torque you want on a given saw set up, not how much HP you want. In a piston engine, HP can remain constant, but torque can be manipulated via gearing, levers, etc. A saw has to be able to apply torque to make use of whatever HP it has. I have used more than a couple ported saws in all types of wood, and I notice it when they lack torque. Cutting cookies is one thing, but chasing cuts, fighting a pinch, bore cutting, gunked up wood, leaning trees, dulled chain, etc etc all require the saw have torque and not just top end HP, unless you want to use a light touch(which means it lacks torque). In many saws, torque comes along with uprated HP, but porters like Simon know where that torque needs to be for a saw that will see use other than cookies. Porters like him get feedback from folks that use their saws for work. I think it's more accurate to say that when a saw has a broad powerband that it has good torque.
 
lone wolf
Joined
Oct 5, 2009
Messages
71,917
Location
Prowling The Pine Barrens
I've only ran a 288 a few times. If I recall correctly the 288 was real torque saw, more so than a 390, but the 390 has the chain speed.

And I guess the 390 has better buffers.I have an old 288 still has plenty of compression the weak link seems to be the pullstart system the compression wreaks havoc on it.And it dont really scream like you said it is mostly torque makes a hell of a stump saw.
 

Latest posts

Top