Degree Wheel Setup/Finding Port Height

[Mastermind]

Here's a couple of videos to help people better understand the degree wheel. Feel free to ask questions, but please try to keep this thread on topic......

 

[Redfin]

Id like to know how some of you measure to figure/grind to your target intake duration.

So far the only way I have done it is set piston at time. Mark piston from intake floor, measure from mark to skirt and transfer to jug.

 

[Mastermind]

Id like to know how some of you measure to figure/grind to your target intake duration.

So far the only way I have done it is set piston at time. Mark piston from intake floor, measure from mark to skirt and transfer to jug.

That's how I do it as well. If I don't want to add volume to the port, I just cut the piston skirt to the line I made.

 

[Redfin]

That's how I do it as well. If I don't want to add volume to the port, I just cut the piston skirt to the line I made.

Im ASSuming case volume? If thats true any negatives of side to side skirt lengths?

 

[merc_man]

Here to learn more about porting.
Just wondering where is a good start point. Im not looking for a race saw just a little more grunt.

Sent from my SGH-I747M using Tapatalk

 

[merc_man]

Randy

Was wondering how you determined the port hight that you set ring to then the paper in second vid? Was that the hight befor cylinder was deckes and you just raise back to that point?

Sent from my SGH-I747M using Tapatalk

 

[Mastermind]

The MS461 gets set up at 102° on the exhaust. I use that height as a compromise. Lower makes a saw with a bunch of grunt, and higher makes a lot of rpm.

 

[merc_man]

The MS461 gets set up at 102° on the exhaust. I use that height as a compromise. Lower makes a saw with a bunch of grunt, and higher makes a lot of rpm.

Ok so if im not looking for rpm then just go wider on both ports or just exhaust.

Sent from my SGH-I747M using Tapatalk

 

[Mastermind]

Widen what you can, using the skirt width as a guide.

 

[merc_man]

Widen what you can, using the skirt width as a guide.

Is it a percentage of the skirt width that you go by?

Sent from my SGH-I747M using Tapatalk

 

[Mastermind]

I'm gonna suggest that you spend more time reading before diving in. I know, that ain't really what a guy wants to hear. But the questions you are asking are very basic level stuff.

How's this sound? Take the saw you are interested in porting apart. Take pics, and start a thread. That way you'll be able to see what we mean by looking at the piston skirt width for example.....

 

[merc_man]

I'm gonna suggest that you spend more time reading before diving in. I know, that ain't really what a guy wants to hear. But the questions you are asking are very basic level stuff.

How's this sound? Take the saw you are interested in porting apart. Take pics, and start a thread. That way you'll be able to see what we mean by looking at the piston skirt width for example.....

Ok thanks.
im gonna start with the stihl 026.
may start looking at it this weekend and will post up a thread.
Thanks for you advice. Will do some more reading till then.

Sent from my SGH-I747M using Tapatalk

 

[merc_man]

I'm gonna suggest that you spend more time reading before diving in. I know, that ain't really what a guy wants to hear. But the questions you are asking are very basic level stuff.

How's this sound? Take the saw you are interested in porting apart. Take pics, and start a thread. That way you'll be able to see what we mean by looking at the piston skirt width for example.....

I started a post for first time porting in the chainsaw section. Mabe should have done that in the technical area not sure. If should be over ther mabe aomeone can move it?



Sent from my SGH-I747M using Tapatalk

 

[Mastermind]

No sir.......the saw forum is the right place.

 

[peter92]

Here to learn more about porting.
Just wondering where is a good start point. Im not looking for a race saw just a little more grunt.

Sent from my SGH-I747M using Tapatalk

yes i would like this to

 

[Mastermind]

yes i would like this to

Just hang around. It will start making sense.

 

[peter92]

Just hang around. It will start making sense.

starting to already , very slowly haha
Peter

 

[Derf]

Everyone seems to say you can mount a degree wheel using a 1/2" drill chuck... I think it'd be helpful if you could show how that is rigged up. I have a reference image on AS, but I think we should start generating our own content.

Also, some people are printing them out online and pasting them on things like CDs, but I think that something bigger, like 7-8" diameter would be more accurate.

 

[Mastermind]

Everyone seems to say you can mount a degree wheel using a 1/2" drill chuck... I think it'd be helpful if you could show how that is rigged up. I have a reference image on AS, but I think we should start generating our own content.

Also, some people are printing them out online and pasting them on things like CDs, but I think that something bigger, like 7-8" diameter would be more accurate.

Most drill chucks are 1/2" fine thread. You can mount a degree wheel using a bolt and washer.

I use 7" aluminum discs....with a printed degree wheel glued on.

 

[Mastermind]

You can use a masonry blade too...