McCulloch 640 & 660 Geardrives

[Nitroman]

I am in lust. Deep, unabashed, lust.....

 

[Mastermind]

 

[Al Smith]

Hey, who had that giant gear-drive McCulloch over on AS? I think it had an SP125 motor mated to a Mac gear reduction?

Mc Bob throwed at least one together using a 125 power unit and a gear reduction unit from something .If I'm not mistaken some have used 797's and reduction units too .

I've only got one which is pictured on Mike Acres site being a 650 .It an 87 cc with a 2 to 1 reduction unit and an 8 tooth 1/2" spur adapted from a Homelite .For a gear drive it's surprisingly fast .

 

[Lee H]

Huh. Well, I can just fiddle with it after memorizing Mark's thread regarding the primer. I could probably figure something out using a modern primer bulb and some fittings. At this point I don't really care, a squirt can will work just as good.

Hey, who had that giant gear-drive McCulloch over on AS? I think it had an SP125 motor mated to a Mac gear reduction?

Here is the last big cube geardrive i built. Sporting the Super 797 motor.

Lee

 

[Mastermind]

Well......just so happens, I have a 797......and a geardrive.

 

[Lee H]

Well......just so happens, I have a 797......and a geardrive.

You have all the ingredients there. Very simple to do.
I'm sure you can handle the task.

 

[Nitroman]

Here is the last big cube geardrive i built. Sporting the Super 797 motor.

Lee

That is beautiful. Simply beautiful.

 

[Nitroman]

That sounds wicked. I can't wait!

 

[Mastermind]

Still having idle issues......

 

[afleetcommand]

Never saw this thread! Very cool....you still "monkeying" around with those old saws? I notice the Bar & Chain alignment is real close to the center of that saw.....wonder if thats for limbing.. (Per that dude over at arboristsite who's all about out board clutch for "ballance" )

 

[Mastermind]

No Walt, I gave the 797 to @Definitive Dave

 

[afleetcommand]

No Walt, I gave the 797 to @Definitive Dave

Re-visiting the past a bit. Bob & I get needled on a vid we did a few years ago. SO a round two is in the making. Digging out the Mac Stuff that's collected in the corners of the shop.. Have some Pro Mac 81 parts. Really want to build them into a saw too.

 

[Warped5]

SP81 is really impressive .... especially after running a 10-10.

 

[67L36Driver]

@Mo.Jim

 

[afleetcommand]

Here is the last big cube geardrive i built. Sporting the Super 797 motor.

Lee

Wow...that is a pretty saw! ( Typical for your work ) Impressive.