Do you like torque or RPMs?

[blsnelling]

My reply - Why not both? This is a MS440 with a ported MS460 topend. This is the very first 1/4 tank of fuel on this P&C, so no break-in time yet. In the vid, I have it tuned just a tad rich to 15,000. You can easily hear it 4-stroke every time it comes out of the cut. I saw as high as 15,800 in tuning it, but not sure I'd cut with it there. 15,500 would be fine for cookie cutting. Push on it and it's still turning 11K+. There's nothing weak about this saw, despite the RPMs it makes. There's no popup in this saw, but is already making 175 PSI compression cold and 162 PSI hot. It started cold this morning in 2 pulls. There's no reason for a ported saw not to be at least as user friendly as a stock saw. Porting is really just optimizing the design. Young, enjoy your new toy!!!

<iframe width="853" height="480" src="http://www.youtube.com/embed/5Pnnzm2OisM?rel=0" frameborder="0" allowfullscreen></iframe>

 

[Fifelaker]

Me likee lots.

 

[SawTroll]

You need a good balance of both (chain speed and enough torque to keep it up, actually) to cut fast.

 

[ratso]

Nice work Brad would it be possible to put a 460 top on a 044?

 

[Metals406]

I like torque. . . Modern saws turn plenty of RPM stock. I'm not talking cookie cutters, but a work saw.

There's nothing better than a saw you can dog-in and lean on, and she keeps pulling.

The first best mod is a razor sharp chain though. I sharpened my bro-in-laws chain on his 310, and he was amazed at how fast it cut -- and 310's aren't known for their power! LOL

On average, most people don't understand chain geometry, or how to correctly set teeth or depth gauges.

If a chain isn't pulling 1/2"-2" chips, there's room for improvement.

 

[blsnelling]

Nice work Brad would it be possible to put a 460 top on a 044?

The 044 and MS440 are the same saw, for all intents and purposes. So, yes.

 

[Andyshine77]

Brad like you I like both, and boy does it sound like that saw has both. Again this is why 70cc saws are the top of the heap in my book, they have rpm's and torque.

 

[blsnelling]

70cc saws rock!!!

 

[RiverRat2]

Nice work Brad would it be possible to put a 460 top on a 044?

The 044 and MS440 are the same saw, for all intents and purposes. So, yes.

Not in all cases it depends as follows

So long as it isnt an early 044 as they came with a 10MM wristpin as long as the serial # on the 044 is post/after X29 382 283 (thats where the 10MM ended & the 12MM Wrist pin began with ser. # ending in 284) as Brad stated you can use an OEM Cylinder and piston with little extra modification to the cylinder/flywheel or Crank case clearance Your preference and the plastic air top cover clearance but it weill fit,,,

Ive built a few its not to bad,,,, and they make really nice Hotrods as evidenced by Brads no less than stellar work,,,,,, what can I say the kid is off the Hook!!!!! if you have a 10MM wristpin unit Baileys offers a NWP Kit to fit it but I think you are SOL on OEM 046/460 Fitament

Hope that helps

RR2'ed

My reply - Why not both?

Brad just curious,,,,, do you often reply to you own questions???

LOLOLOL!!!

 

[lone wolf]

Brad like you I like both, and boy does it sound like that saw has both. Again this is why 70cc saws are the top of the heap in my book, they have rpm's and torque.

You nailed it that is the perfect combination of both !

 

[porsche965]

Torque first, rpms second. Bliss is a torque work saw pulling rpms in the cut no less than 1500 from WOT IMO.

Torque is the elusive measure of power/speed. RPMs are easy to make. The Zen of porting is once again, 1500 rpms minimum below WOT with a 28" bar from a 70cc saw in hard wood. Hence, longevity, maxium production, maxium HP anywhere in the saws work range. This makes for an easier workday too.

Just what I prefer in a chainsaw, but not the easiest to produce.

 

[porsche965]

...and don't limit this thinking to just 70cc saws, the 90+ or the 70- cc saws can enjoy the same benefits of these thoughts!

I enjoy them all. CAD rules.

 

[Mad Professor]

Torque.

And when I don't have my left elbow locked out, in the cut as it should be, any kickback will hit my wrist/saw will die. Wimpy saws with low rakers that just bog out in a real cut SUCK!!!

Oh yes, need to tailor your chain to saw/wood. Bogging and kickback can be traced to filing techniques.......

 

[Trx250r180]

sounds good that engines powerful sounding ,question ,would you run the rpms that high if in 28 inch wood and still pull the bar ok ?or would you richen it a little more ?

 

[056kid]

Maybe put it in some real wood. . . .

 

[HARRY BARKER]

Maybe put it in some real wood. . . .

HAHAHAHA that what i was thinkin too

 

[Andyshine77]

Maybe put it in some real wood. . . .

Like what?? rock hard Doug Fir

 

[056kid]

how bout a big old shore pine? Or a solid chunk of shag bark hickory. .


Actually anything green and the size of the bar would suffice. .

 

[porsche965]

And let me add one more thing. IF a saw pulls a solid 15,000 over the factory 14,000 rpms and is still fourstroking lightly, a product from the porting, then so be it, that's great! But when leaned on, let her not drop no more than 2000 rpms when in the cut and making great time and production. RPMs are fine but with torque to carry the request of the operator and not have any fall off of speed in the cut.

This is where the M-Tronic helps out by giving a measure of fuel or timing to assist in task at hand.

Great stuff this new technology. But I know that good porting can enhance old technology to be better saws as well. I own them.

Good video as well.

 

[porsche965]

HAHAHAHA that what i was thinkin too

Me too. But all of us, myself included, aren't blessed with big wood all the time so what we have is what we got.

I'm sure that more vids will follow.