Mcculloch sp125/101b kart saw build thread

[Bigmac]

First start after baseline tune

added a 5° flywheel

 

[jacob j.]

Sounds good - especially with that five-degree flywheel.

 

[Bigmac]

Sounds good - especially with that five-degree flywheel.

Thanks, don’t want to lean it out too much being fresh, but a little more tinkering with the screw and she is sounding decent! I may add a couple more degrees of timing, it really liked 5°

 

[heimannm]

It almost seemed like the acceleration came before the throttle was opened with the 5 degree flywheel. Did you also open the points a bit?

Mark

 

[Woodslasher]

It almost seemed like the acceleration came before the throttle was opened with the 5 degree flywheel. Did you also open the points a bit?

Mark

I think he chipped it.

 

[Bigmac]

It almost seemed like the acceleration came before the throttle was opened with the 5 degree flywheel. Did you also open the points a bit?

Mark

I am running a chip on this on mark, then it’s fully timed by the flywheel

 

[heimannm]

I see...

 

[Bigmac]

I see...

I know it’s the dark side Mark, I feel like is a preformace gain at times

 

[Bigmac]

Made and air filter mount, probably going to make a difference one, it works, but could be better

 

[Hinerman]

I want one!!!

 

[Lee H]

That thing sounds awesome, Nice work Nate, I think i'm going to have to build one in the future.

 

[Lee H]

Got a surprise if i have time later for picture taking, 598 cc's of monster Mac's

 

[Maintenance Chief]

Made and air filter mount, probably going to make a difference one, it works, but could be better View attachment 319586View attachment 319587

Put it in some wood!

 

[Bigmac]

Put it in some wood!

That is the plan soon, need a few parts to be 100%, be patient! Lol I will have a decent size test log, so that’s a bonus! Going to have that greasy 101 saw and the cp going head to head, so that will be fun.working all week and am not getting home tell after dark, so hopefully this weekend is like this last one!! It’s was storming pretty good Saturday

 

[Lee H]

So over the past couple years i have sold a few 125's and kinda regret it. So i have been on the lookout
for replacements. Here is what i have found over the past 3 months.

 

[Maintenance Chief]

So over the past couple years i have sold a few 125's and kinda regret it. So i have been on the lookout
for replacements. Here is what i have found over the past 3 months.

View attachment 319713 View attachment 319714 View attachment 319715 View attachment 319716

I think we have a winner boys and girls!

 

[Lee H]

This 105 i picked up this weekend, Yes it is the one that was on the popular auction site that came with
a 50 inch bar with helper handle. The story goes. A fellow bought it new in eastern Maine to do some
milling. I guess he wasn't happy with milling and it then sat for years till the guy i got it from bought
it from him. The saw has seen a little use but it is in really nice shape.

 

[Lee H]

Next is this 125 i bought from a very known member here, It is rebuilt and in nice shape.
has the fully adjustable carb and runs perfect. Gotta love the big H&S felling dog.

 

[jacob j.]

You have some sweet saws there Lee.

 

[Lee H]

View attachment 319742 View attachment 319726 View attachment 319727 This 125 came from a guy i have been doing saw biz with for years over on the west coast.
It appears to have been a very low hour saw, Has the original chain brake but unfortunately
it appears to have been a fire victim. It didn't burn long but enough to discolor the paint
and melt the original yellow chip screen. It currently doesn't run and has a scored piston.
To me it looks like it was straight gassed.