Husky internal clutches choke with dust…?

[Woodwackr]

Yep

Gonna try a filter skin

View attachment 448449

Maybe try cutting better quality wood? Or, something not 10yrs dried out, lol

 

[davidwyby]

Finally scrounged washers at work. Obv could make something but wanted to see how close I could get.

This one is .050” thick, .010” slop. Way less than the OEM washer.

Dia slop about the same. OD barely enough to retain the rim sprocket.



This one is .060” thick, no slop there, but sloppy fit to the crank dia.

I think the best would be the next size smaller dia washer that is .060 thick bored out to barely slip on the crank.




The graphite didn’t work. Was hard to remove.

More grease seems to help. I think it kinda seals between the washer and drum hub.

Too bad they quit putting the grease port in the cranks.

The bearing cage sits recessed down in the clutch drum, maybe a rubber or plastic oring in there…or bronze.

 

[davidwyby]

Maybe try cutting better quality wood? Or, something not 10yrs dried out, lol

I got what I got. I take pride in making liabilities into assets. It’s funny to see the big logs laying out in the country, sometimes with a crooked little saw cut in them.

 

[davidwyby]

The OEM washer basically grabs and funnels dust down into the bearing.



I bet that is a problem more than the center being loose.

 

[Woodwackr]

Finally scrounged washers at work. Obv could make something but wanted to see how close I could get.

This one is .050” thick, .010” slop. Way less than the OEM washer.

Dia slop about the same. OD barely enough to retain the rim sprocket.

View attachment 448450

This one is .060” thick, no slop there, but sloppy fit to the crank dia.

I think the best would be the next size smaller dia washer that is .060 thick bored out to barely slip on the crank.


View attachment 448451

The graphite didn’t work. Was hard to remove.

More grease seems to help. I think it kinda seals between the washer and drum hub.

Too bad they quit putting the grease port in the cranks.

The bearing cage sits recessed down in the clutch drum, maybe a rubber or plastic oring in there…or bronze.

Very interesting

 

[davidwyby]

The gap, turned into a funnel by the shape of the washer

 

[Wilhelm]

I am not smart, but shouldn't the centrifugal force fling dust outwards?!

I never noticed something like that happening on any of my Dolmar's and nearly all feature inboard clutches.

 

[Timjus]

I am not smart, but shouldn't the centrifugal force fling dust outwards?!

I never noticed something like that happening on any of my Dolmar's and nearly all feature inboard clutches.

clutch drum acts as centrifugal fan and draws air from middle bearing hole.

 

[Wilhelm]

clutch drum acts as centrifugal fan and draws air from middle bearing hole.

Like a turbo fan.
Didn't think of that.

A tighter ID fitting outer washer might help a little.
If there is enough space several thinner washers may seal better.

Though I think the dusty dry wood David is cutting is the main issue.

 

[Wilhelm]

What is that cranks OD?

OEM Dolmar thin steel shim, goes on the clutch, 10.2mm ID, 17.9mm OD, 0.5mm thick
181-224-090

 

[Wilhelm]

OEM Dolmar thin steel shim, goes on the clutch, 10.1mm ID, 15.9mm OD, 0.5mm thick
021-224-011

 

[Wilhelm]

OEM Dolmar steel shim, goes under the clutch weights, 10.2mm ID, 44.5mm OD, 1.0mm thick
165-182-060

 

[davidwyby]

What is that cranks OD?

OEM Dolmar thin steel shim, goes on the clutch, 10.2mm ID, 17.9mm OD, 0.5mm thick
181-224-090

Husky is 12mm, larger than stihl or dolmar.

You can see the dolmar better washer (flat) at 6:30

 

[Wilhelm]

OEM Dolmar flat steel shim, goes under the clutch weights, 12.2mm ID, 44.5mm OD, 1.0mm thick
267389-1

 

[rogue60]

Ya need to sharpen ya chain! that's the standard answer by softwood cutters lol

I've not experienced the locking up bearing myself in the hard dry timber that makes lots of dust but that's with Stihl saws.
I usually only grease the bearing when I put a new rim on.
Sorry am of no help but I think you are onto something with the washers.