Spark arrestor screens

[jmester]

Looking for some ideas on how to install a spark arrestor screen on a saw with a pipe style muffler mod.

 

[jmester]

This is what I meant by pipe style muffler mod. My pipe ID is 3/4 .750

 

[ucm931]

Braze a just barely legal stainless screen onto the inside of the muffler cover where the pipe goes through?

 

[jmester]

I have been looking at some small engine spark screens that might work like this
Honda part number 18350-Z0H-820

Just not sure of the OD of the pipe on the spark screen will fit inside the pipe.

 

[jmester]

Braze a just barely legal stainless screen onto the inside of the muffler cover where the pipe goes through?

I thought that as well, but I figured I would melt the screen before I got it brazed on.

 

[ucm931]

Stainless screen and some silver solder?

 

[jmester]

I don't know for sure but I don't think silver solder will stick to the muffler well. I would think it would work for the screen it self.

 

[jmester]

Stihl part number 4244 140 8100

 

[jmester]

Or maybe something like this

Part number CRF-69207

 

[S Sidwell]

Bottom style would be how you want it that way you Can clean the screen. Don't think it would be fun cutting welds every time you wanted to clean it.

Sent from my SM-G550T using Tapatalk

 

[Stump Shot]

Here's my take on the problem. If the screen is on the inside it can not be cleaned. When the ring is pushed over the screen it flairs out behind it, once tacked on to the muffler, rendering it unable to come off. When cleaning does become necessary, just burn with a propane torch and done.

 

[jmester]

Here's my take on the problem. If the screen is on the inside it can not be cleaned. When the ring is pushed over the screen it flairs out behind it, once tacked on to the muffler, rendering it unable to come off. When cleaning does become necessary, just burn with a propane torch and done.
View attachment 245409

I like what you did there. Any way you would be willing to share a few more pictures of how you do it

 

[ucm931]

Here's my take on the problem. If the screen is on the inside it can not be cleaned. When the ring is pushed over the screen it flairs out behind it, once tacked on to the muffler, rendering it unable to come off. When cleaning does become necessary, just burn with a propane torch and done.
View attachment 245409

Four screws and the muffler half comes off, que no? Then propane torch and burn it clean? Won't hurt my feelers if my idea isn't used, just like the idea of the screen being out of sight. Either way, I'd use a less restrictive screen.
My .02

 

[Stump Shot]

I like what you did there. Any way you would be willing to share a few more pictures of how you do it

If I had them I would, but I don't, so I can't. I barely got the one I took.

Four screws and the muffler half comes off, que no? Then propane torch and burn it clean? Won't hurt my feelers if my idea isn't used, just like the idea of the screen being out of sight. Either way, I'd use a less restrictive screen.
My .02

For a muffler with a removable front, that's an option, the one I did does not, hence a lot of head scratching to make something work.
Use whatever screen you like.
I didn't post what I did to supersede what anyone else came up with, just one more take on it, I'm actually quite interested in an internal screen that works out.