7 or 8 tooth sprocket?
- Thread starter caddguy
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Sawdustmaker
Addicted to ArboristSite
yes, 044 has plenty of power for a 20inch bar. eight tooth would certainly be faster.
Are you heavy handed at all using the dogs? If so, you're better off with the 7-pin.
Using the spikes to lever the saw into the wood. The 8-pin will add chain speed but will sap torque from the saw. It will bog more easily. It just depends on what you're cutting and your cutting style as to which will work best for you.
Yep! I just switched to an 8 tooth on my 441 with a 22" bar and the results are good so far.
Wild Knight
ArboristSite Guru
I didn't think the 8 pin was all that much faster than the 7 pin in small wood. However, you'll definitely notice that the 7 pin holds its RPM's better in the cut (hardwoods anyway), especially when you burry the bar. It may be a toss-up with 20" bar, but you'll want the 7 pin for any bar larger.
SawTroll
Information Collector
I have found that with most stock saws the loss in torque just isn't worth the extra chain speed, stick with the 7 pin.
B_Turner
Addicted to ArboristSite
I have found that with most stock saws the loss in torque just isn't worth the extra chain speed, stick with the 7 pin.
I agree. At the end of the day less wear and tear on saw and operator.
I now run 7 pins on all my 3/8 saws. I used to swap and fuss.
8 pin is esp unforgiving when a chain starts to dull.
SawTroll
Information Collector
I have found that with most stock saws the loss in torque just isn't worth the extra chain speed, stick with the 7 pin.
I am not a pro, and not in a hurry - but I like to experiment a little.
8-pin easily beats 7-pin with a 15" bar on my MS361 in my birch - it doesn't really matter, but it is more fun to run that way......
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DarylB
ArboristSite Operative
I like the 8 pin on my 440 and 038 mag w/20" bars in hardwood.
Stihlman441
Addicted to ArboristSite
In your soft woods 8 pins will be farster no probs.
Will an 8 pin be faster? maybe, will it work? yes, but it's harder on the saw and in the end generally not worth it. Now if we're talking softwood or modded saws, that's a different story. With that said it's still probably best to stick with a 7 pin on a 70cc saw.
And yes the experimenting part is fun and like others have said an 8 pin sprocket is cheep.
I was just trying to answer the OP question to the best of my ability. A stock 440 will run best with 7 pin in most circumstances.
And yes the experimenting part is fun and like others have said an 8 pin sprocket is cheep.
I was just trying to answer the OP question to the best of my ability. A stock 440 will run best with 7 pin in most circumstances.
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I am not a pro, and not in a hurry - but I like to experiment a little.
8-pin easily beats 7-pin with a 15" bar on my MS361 in my birch - it doesn't really matter, but it is more fun to run that way......
You know that birch is closely related to butter. Steve
SawTroll
Information Collector
It varies a lot - slow-grown "mountain birch" with less than a mm between the year rings actually can be pretty hard.
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Wild Knight
ArboristSite Guru
Will an 8 pin be faster? maybe, will it work? yes, but it's harder on the saw and in the end generally not worth it. Now if we're talking softwood or modded saws, that's a different story. With that said it's still probably best to stick with a 7 pin on a 70cc saw.
And yes the experimenting part is fun and like others have said an 8 pin sprocket is cheep.
+1 :agree2:
They are cheaper than a pack of smokes.
Just ####in BUY SOME AND SEE FOR YOUR SELF.
Just ####in BUY SOME AND SEE FOR YOUR SELF.
McC
ArboristSite Guru
When I got my 7900, I put a 24" bar and 8 sprocket on it. I didn't like it. I threw the chain a couple times, and the extra chain speed was kinda scary sometimes while cutting firewood. It just seemed like the combination of a powerful saw, and a blazing chain for limbing and smaller wood is asking for trouble. It's not that I use the 7900 for limbing, but sometimes you end up limbing just because it's easier than getting the 5100 to cut for a couple minutes. I'm not a wimp, I run a 10 pin on my mac hotsaw, but that is a more controlled situation, you're not going to pinch the chain, or have a kickback. You really need to get the stopwatch out to see if it would cut faster anyway. You might be surprised with the results.
Scott
Scott
