i used copper pipe fittings, they transfer heat well for brazing and were pretty much the right shape to start off with. Also make some cool colours untill you run the saw.
i think they were $1.50AUD each...
i think they were $1.50AUD each...
i used copper pipe fittings, they transfer heat well for brazing and were pretty much the right shape to start off with. Also make some cool colours untill you run the saw.
i think they were $1.50AUD each...
Ah, I was interested in copper. Good to know it works. I've never tried brazing anything as I don't have a MAP setup. I should really get one sometime. Luckily my current project has a 2 piece muffler that I can take apart to mod so I don't have to weld/braze anything. I definetely want to on my next one though, I love some of the pipe mods.
Joe,
If you consider copper, keep in mind where you place it as it is very soft. Especially when it becomes warm.
What model saw are you considering modding? If you tell me what size ID pipe you need, I could send you out an already made insert that all you would have to do is cut the hole, stick it in and take it over to your nearest auto muffler shop and have em weld it in.
And I would send you the insert no charge, Thats one with the screen already built in. And no charge means free shipping too!
Or do it this way.
. He could do that using some Stainless screen, the metal diverter, high temp silicone to seal the small gaps. And a couple of stainless steel Rivets.
Scott.
You can use high temp silicone in a muffler? I didn't know it would take that much heat.
I'm actually not sure yet, it will depend on what I can find for another project saw I appreciate the offer, and I may take you up on it later on.
Tim!
Thats a great mod, Have some Wojo Mojo. Did you do it yourself?
I think he does not have a welder. He could do that using some Stainless screen, the metal diverter, high temp silicone to seal the small gaps. And a couple of stainless steel Rivets.
You can get the Rivets from a restoration supply company. Thats also where I buy my High Temp POR 15 paint.
Scott.
The exhaust gasses are 1200 to 1400F at the engine, and tad lower at the exhaust.... Good luck with any silicone, even chimney grade...
Oh yes... watch out for the stainless mufflers appearing on Stihl pro saws next year... shut up Andy
Andy, there is a major chemical manufacturer that has a silicone avail that has a 100 hour continuous service life at 602 degrees farenheit. The Epoxy has an operating temp of 1500F.
We are not talking about the interior of the muffler near the exhaust stream close to the cylinder port. You would have to agree that the temperature on the outside of the muffler that is exposed to the 10 degrees to 100 degrees farenheit atmosphere would be more than a "tad" lower than the usual 600C on the inside of the exhaust stream. The would be greatly lowered in a modified muffler that breathes easier with less restriction.
I hope that don't mean...................CAT!
Enter your email address to join: