MS261 VS MS261 C-M Comparison

[bryanr2]

i seem to run into him once in a while when i look into the mirror. i hear hes pretty excited about the project and has some other projects in mind.....046, 064, 066, 660 and his newest arrival an 048 av he picked up over the weekend while falling a tree for friend.....maybe even a 2100 cd later on.....he says to keep up the good work and looks forward to the results.

There was a rumored Mastermind 2100cd rebuild/ port thread here a while back. Might ease your decision.

 

[MCW]

I'd really like to see a 261C worked off it's tits and then a more sensible build side by side.
Super quick may sound all good for a fun saw but for a work saw it ain't that good or efficient.

 

[Mastermind]

There was a rumored Mastermind 2100cd rebuild/ port thread here a while back. Might ease your decision.

I tried to send you a PM yesterday.......clean yer box.

I'd really like to see a 261C worked off it's tits and then a more sensible build side by side.
Super quick may sound all good for a fun saw but for a work saw it ain't that good or efficient.

The saw in this thread will be a simple worksaw, I've not started porting it yet. So far all I've done is a muffler mod and set the squish to .020...

The 026 in one of the videos, that was a saw just for GTGs and stuff.

 

[Scooterbum]

Randy
As always I enjoy your threads on builds. But this one more so with the gains being shown at each mod. I know that takes a bit of time with all the video shoots and uploading.
Just wanting to let you know it's enjoyed very much here. Keep it up Buddy !!

 

[bryanr2]

cleaned the inbox

 

[Mastermind]

Randy
As always I enjoy your threads on builds. But this one more so with the gains being shown at each mod. I know that takes a bit of time with all the video shoots and uploading.
Just wanting to let you know it's enjoyed very much here. Keep it up Buddy !!

I must admit that Brad sorta pushed me into doing it this way. I don't really have the sort of time it takes to do one this way often though.

Right now I'm porting the OE MS261 and will then try that jug on the M-Tronic saw. I'm pretty sure it won't run that way, but what the heck.......we've gone this far, so I figure we should try that too.

Then when I put the MS261 jug back on, it will be ported, but with the stratos intact, and with the compression at 210 or so.

 

[Scooterbum]

I'm curious to see the difference's between these 2 saws. Not that I'll be runnin' one. Since I joined the "30cc gang".
I did manage to get one of those new "Sabot" pistons installed in the 064 to knock her down to 30cc's so i can still run her though..............

 

[Mastermind]

I'm curious to see the difference's between these 2 saws. Not that I'll be runnin' one. Since I joined the "30cc gang".
I did manage to get one of those new "Sabot" pistons installed in the 064 to knock her down to 30cc's so i can still run her though..............

My first attempt at porting this new design will be a conservative approach for sure. Mostly I'll be adding intake timing and compression. I'd rather err on the side of caution than overshoot the mark.

Sabot piston huh?

What if a guy tied helium balloons on the saw? Would that make it tighter? opcorn:

 

[Scooterbum]

My first attempt at porting this new design will be a conservative approach for sure. Mostly I'll be adding intake timing and compression. I'd rather err on the side of caution than overshoot the mark.

Sabot piston huh?

What if a guy tied helium balloons on the saw? Would that make it tighter? opcorn:

Yeah you just resleeve with one of them new Space AgeTeflon Liners and a dinky piston. Pretty slick....................................................................................................................................................................................................................I''l go back to my corner now.

 

[Yukon Stihl]

Do I smell pie? :msp_biggrin:

Are you sniffing fingers again?

 

[Mastermind]

Color me overly surprised. I installed the jug I gutted the stratos on the "C" model and it seems to be running just fine. Excellent throttle response and everything. I'm gonna eat some lunch and then try it in wood. :msp_thumbup:

 

[thomas1]

Color me overly surprised. I installed the jug I gutted the stratos on the "C" model and it seems to be running just fine. Excellent throttle response and everything. I'm gonna eat some lunch and then try it in wood. :msp_thumbup:

Have any of the other m-tronic had fueling issues?

 

[Mastermind]

Have any of the other m-tronic had fueling issues?

No, none that I've done. I still doubt this saw will pull like it should with the strato ports gutted. It's idles and revs good but..........

 

[thomas1]

No, none that I've done. I still doubt this saw will pull like it should with the strato ports gutted. It's idles and revs good but..........

You're thinking the engineers may know something?

 

[Mastermind]

You're thinking the engineers may know something?

I'd reckon. :msp_thumbup:

 

[Hedgerow]

You're thinking the engineers may know something?

Yeah...
They know all sorts of things...
Problem is, with all the "Things" rolling around in those heads of theirs, it's hard for anyone to decide what exactly, they meant to do...
And why...

 

[Mastermind]

I've got a video uploading....for the second time. The first failed for some reason.

I didn't see any serious gains though. 13.22 seconds. We were at 13.97 with just the muffler mod and the squish mod.

 

[john_bud]

Is there a learn time lag after changes?

 

[Mastermind]

Is there a learn time lag after changes?

Running the saw with the choke on for a minute is suppose to set the system.

 

[Adirondackstihl]

Brad, I don't know how in the world you make those slots look so good. These I did look like ####.

I'm gonna do a welded deflector so I don't have to hang my head is shame when someone sees this mess. :msp_sad:

I made the mistake of cutting all four slots with a thin cut wheel and then attempted to shape and bend them with a pair of duck bill pliers.
After looking at it, and trying to figure out how Brad keeps his neat, I came to the conclusion that he cuts the front slot 1st and bends it. Then proceeds to work his way back, cutting and bending as he goes.
Cutting all the slots 1st and then bending 2nd will make for a mess that's tough to straighten out. Do em 1 at time....starting in the front

Do I smell pie? :msp_biggrin:

Get your finger outta your nose.....didn't you just drop the browns off at the superbowl?........friggen hog