Rakers with a Stihl USG

[Hinerman]

I have a raker wheel for my Stihl USG. It grinds the inside raker fine. The outside rakers produce a lot of chatter on the wheel (for some but not all the rakers). It looks like it wears the wheel out quick; I can feel small chunks of the wheel hitting me when it chatters and bounces.

Anybody else experience this grinding rakers (on any grinder)? Am I doing something wrong? Is there a fix?

The obvious solution seems to reverse the wheel direction for the outside rakers, but that is not an option.

Thanks in advance.

 

[Wonkydonkey]

What’s your settings. ? And Is the chain clamped good.
Ie stihl say ……
,see pics below…

I’ve got a usg and just got a new wheel as it never came with one when I got it 2nd hand. So I’m very intrigued, as I will be in your shoes at sometime in the near future

Btw, If you don’t have the manual I’m sure i can send it .

 

[huskihl]

There might be some movement in the chain. When grinding the rakers on the back side, the chassis will flex slightly the way the wheel is spinning, which is away from the wheel. When you do the front side rakers, as they flex, that rocking action lifts the raker higher into the wheel causing chatter

 

[president]

I have a raker wheel for my Stihl USG. It grinds the inside raker fine. The outside rakers produce a lot of chatter on the wheel (for some but not all the rakers). It looks like it wears the wheel out quick; I can feel small chunks of the wheel hitting me when it chatters and bounces.

Anybody else experience this grinding rakers (on any grinder)? Am I doing something wrong? Is there a fix?

The obvious solution seems to reverse the wheel direction for the outside rakers, but that is not an option.

Thanks in advance.

I turn the chain around in the vise for the second side ,presenting the raker away from protruding
and this avoids the chatter .

 

[Hinerman]

There might be some movement in the chain. When grinding the rakers on the back side, the chassis will flex slightly the way the wheel is spinning, which is away from the wheel. When you do the front side rakers, as they flex, that rocking action lifts the raker higher into the wheel causing chatter

Probably the case. I was sharpening .063 chain; then went to .050 and .043. to do some rakers, without making any adjustments, because it is a minor inconvenience to do so.

Thanks for the input.

I turn the chain around in the vise for the second side ,presenting the raker away from protruding
and this avoids the chatter .

I don't see how this would work. Seems like the wheel will hit the cutter; and the wheel will be grinding the wrong side of the raker. got any pics?

Thanks for the input.

 

[Hinerman]

What’s your settings. ? And Is the chain clamped good.
Ie stihl say ……
,see pics below…

I’ve got a usg and just got a new wheel as it never came with one when I got it 2nd hand. So I’m very intrigued, as I will be in your shoes at sometime in the near future

Btw, If you don’t have the manual I’m sure i can send it .
View attachment 394880
View attachment 394879

My settings are correct.

Thanks for the input.

 

[Wonkydonkey]

Probably the case. I was sharpening .063 chain; then went to .050 and .043. to do some rakers, without making any adjustments, because it is a minor inconvenience to do so.

Yes I agree with you.

In the manual, it says something about different guage chains and faffing about with spacers to clamp the thinner chains.

I didn’t get them spacers either and I thought about getting some washers instead
Anyhow after all it was only about $350 I paid for my usg.. so I can’t complain to much.


But I’m still intrigued as I know I will be in your boots sometime soon

 

[davidwyby]

Just turn the chain around

Grind from inside like filing from inside

You might also be able to offset enough to get on the other side of the center of the wheel…but will probably affect depth

 

[chipper1]

Just turn the chain around

Grind from inside like filing from inside

You might also be able to offset enough to get on the other side of the center of the wheel…but will probably affect depth

How do you gauge the location of the chain?
I've done this for removing the back side of the cutters on racing chain, using the front side of the raker to gauge it.