Author Topic: Pro Mac 805 bar on Super pro 125  (Read 2563 times)

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Offline Eccentric

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Re: Pro Mac 805 bar on Super pro 125
« Reply #30 on: December 21, 2012, 08:32:35 pm »
The recoil on the 125 is the same as what other saws?  I have a 250 that looks to have the same recoil as my 125 but I really don't want to start taking parts off a nice saw.

The starter from most other LH start large frame Macs (250, 300, etc) will work on a CP125 without modification.  To use that starter on an SP125 or SP105, you must swap on the longer ratchet (starter shaft/cup thing that engages the pawls on the flywheel) as the SP saws have a reinforced flywheel cover that spaces the starter farther from the flywheel than on earlier large frame LH start Macs. 

Replacement starter assemblies sold by Mac in the 1970's came with both ratchets so you could use the starter on all the saws.  Seen a few on feebay recently.  The longer SP ratchet was also available separately (and I've seen those listed too).
-Aaron

For older saws:
Tune the H side so that it 4-strokes (burbles) at WOT unloaded and just cleans up when under load.
When you lift cutting load, the saw should immediately revert to 4-stroking.  Fine tune the transition point for the wood you're cutting.

Offline Al Smith

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Re: Pro Mac 805 bar on Super pro 125
« Reply #31 on: January 21, 2013, 09:34:16 am »
In the last year I've dropped a fair amount of hundred footers around 3 feet in diameter .Now had they had been sliced into firewood I would have used the big displacement saws .As it was I salvaged  the usable saw logs and firewooded the rest .Therefore I could not justify dragging out those heavy as lead saws for just a few cuts .I've got enough good runnng saws in the 70 to 80 cc range for that stuff without breaking my back and poor old worn out shoulders hoisting a 35 pound saw with a long bar .

I mean you have to keep your priorities straight now .If you get all worn out man handling a saw all day long how pray tell could you enjoy a brew under the big umbrella on tha patio after the work is done ? You'd have to drink the thing out of a straw .

Offline super44

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Re: Pro Mac 805 bar on Super pro 125
« Reply #32 on: January 21, 2013, 10:29:59 am »
I mean you have to keep your priorities straight now .If you get all worn out man handling a saw all day long how pray tell could you enjoy a brew under the big umbrella on tha patio after the work is done ? You'd have to drink the thing out of a straw .

Works for me too.  If I won't use the tank of gas it's not worth the fight with the big saws but it is fun to hear them run every now and then.

Offline mcbob

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Re: Pro Mac 805 bar on Super pro 125
« Reply #33 on: March 23, 2013, 03:06:51 pm »
You're getting confused or I didn't explain it enough ."Driver " meaning the amount of drive links on the chain not the drive system .

The 10 series saws use 5/16" bar studs ,the large Macs like the 125 use 3/8" studs so the 10 series bar in that respect wouldn't work unless the slot were milled out .Do to the fact the tail of a 10 series bar is not wide enough to both engauge the bar tightening apparatus plus not wide enough to engauge the oiling hole it just won't work .

This same question arose on another forum maybe 2 months ago .To find out for certain I layed a 10 series bar over a Mac 125 style and there's just no way it could work .

Sorry Al but that bar does work thats the way i setup my SP125 to run 3/8" chain i just widen the bar adj slot with a file

McBob
I am a idiot so my pics disappeared.

Offline Al Smith

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Re: Pro Mac 805 bar on Super pro 125
« Reply #34 on: March 24, 2013, 06:48:08 am »
You must have found a 10 series bar with a wide heel then Mc Robert . The ones I had would not cover the oil channel .I've probaley got 20  10 series bars from 16" to 32" and not a one of them was wide enough to work on a reed valve .

I've got a picture some place buried in one of the computers if I can find it  .It shows a 10 series layed over top of a reed valve bar .

Offline Al Smith

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Re: Pro Mac 805 bar on Super pro 125
« Reply #35 on: March 24, 2013, 08:12:44 am »
Found the picture .The bottom bar is that 48" Mac hard nose that's on the Homey in my avatar .Next a 28" Mac branded ,24" 20".

Windser made a majority of the bars for McCulloch but I think others might have too .Some would fit a Husqvarna and some would not .Those had a little wider heel section ,not shown in this picture .All I have in that style are 16" bars .

If memory serves me the more narrow bars if a person moved the tighening hole it would end up in the bar rail slot .Not good . The wider ones might possibley work depending but it's kind of over kill to run a 16" bar on a 125.

Actually for my methods I've found that a Stihl mount size from 024 to 066 works out great using spacers on the bar studs .Like 12 mm OD to 3/8" ID .The bars are plentifull and the heels wide enough to adapt to a reed valve McCulloch .

Now I'm noy saying that some 10 series bars might not be adaptable but none I have in my pile of stash would .

 

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