Flywheel Broaching

[Mastermind]

Here's a few pics of what it takes to rebroach a flywheel to alter timing.

What we have here is a few 1122 flywheels.

 

[Mastermind]

This one is correct for the 1300 non-limited standard coil.



This one is correct for the limited coil that some 064s had. This is a very common flywheel that is usless without the correct coil (which is hard to find in working order).



This one is for either a Prufex or a 1300 coil. It will not work with the 064 oddball coil though.

 

[Mastermind]

Now what I do is line up the magnets and clamp the flywheels together with the one that works with the 1300 coil on top. Then press the broaching key thru both coils. This gives me a slight cut to go by on the bottom flywheel.

Here are the tools.......

 

[Mastermind]

 

[Mastermind]

Finished product.

 

[Mastermind]

I didn't take any pictures while I was using the tools in the press.......got the tunnel vision.

Questions?

Comments?

Mild Criticisms?

 

[Sty57]

What kinda press? Arbor, Hydraulic?

 

[psuiewalsh]

Do you fill the wrong key for people like me to figure out later?

 

[Duane(Pa)]

Could this be done as a conversion to say a 361 (integral key) flywheel?

 

[Mastermind]

What kinda press? Arbor, Hydraulic?

Just a cheap Harbor Freight hydraulic.

 

[Mastermind]

Do you fill the wrong key for people like me to figure out later?

I mark it with a drop of paint.....

Could this be done as a conversion to say a 361 (integral key) flywheel?

I don't think so........because the keyway in the crank is odd sided.

 

[CJ Brown]

Now what I do is line up the magnets and clamp the flywheels together with the one that works with the 1300 coil on top. Then press the broaching key thru both coils. This gives me a slight cut to go by on the bottom flywheel.

Here are the tools.......

I don't quite understand this. Do you mean you press the broaching key through both flywheels instead of both coils, or am I missing your meaning altogether?

 

[Mastermind]

I don't quite understand this. Do you mean you press the broaching key through both flywheels instead of both coils, or am I missing your meaning altogether?

Both flywheels.

 

[CJ Brown]

Pretty impressive the amount of tooling you have.

 

[Mastermind]

Pretty impressive the amount of tooling you have.

Considering that I work in a 200sqft shed........I'd say it is. lol

 

[Al Smith]

Just as a bit of hill billy engineering you can make a broach tool from thread tap .Grind the teeth off,grind a cutting edge and use a heavy drill press as an arbor ,nibble it then finish with a file .It's slow but what the hey if that's all you have .

 

[Mastermind]

Just as a bit of hill billy engineering you can make a broach tool from thread tap .Grind the teeth off,grind a cutting edge and use a heavy drill press as an arbor ,nibble it then finish with a file .It's slow but what the hey if that's all you have .

With these flywheels fitting on a tapered shaft........I'm sorta hillbillying it as it is. lol

 

[EvilRoySlade]

Seems to me like a huge amount of work when you could easily just get in there with a hacksaw blade locked in a pair of vice grips, then just flail around until you've removed enough material to allow the flywheel to rotate through a few degrees. That way while the saw is running, if you don't like the advance it has you just stick a branch through the starter cover and nock the flywheel a couple degrees different. Whalah...adjustable timing.

You're welcome.

 

[Mastermind]

Seems to me like a huge amount of work when you could easily just get in there with a hacksaw blade locked in a pair of vice grips, then just flail around until you've removed enough material to allow the flywheel to rotate through a few degrees. That way while the saw is running, if you don't like the advance it has you just stick a branch through the starter cover and nock the flywheel a couple degrees different. Whalah...adjustable timing.

You're welcome.

Repped !!!!

 

[Stump Shot]

I didn't take any pictures while I was using the tools in the press.......got the tunnel vision.

Questions?

Comments?

Mild Criticisms?

Question: (and a dumb one at that) Are you doing this to run a coil other than what the saw came with?