Not sure what other models have them, but I have a McCulloch 10-10 that has exactly that. Well close to it anyway. There is a reed under the deflector in the muffler outlet. The higher the exhaust pressure, the larger the exit. Mcculloch was definitely ahead of their time in some aspects. Not the same as what you mentioned, but same principal.
I'm a fan of this method. I never did understand and/or like the way the exhaust hammers the clutch side case half with the factory outlet. Nice work!
Tig welded
I wouldn’t waste your time unless you get one with high frequency to clean the porosity that you will be drawing out from inside the muffler. If you’re already brazing them it makes a much cleaner looking joint. I tig mine and it comes out nice but you really have to have patience and let the high freq do it’s cleaning and just dab little at a time. Not saying you can’t do it wouldn’t high freq, just saying you will draw porosity through the metal and that will take some more tricks to remove and make it look nice. Like some thin stainless tie wire can draw porosity out but it’s another aggravating process to deal with. If your already doing quality brazing there’s nothing wrong with that at all!
Black nickel or whatever it is sure is fine!!!
I bet that guy sounds nasty!!! In a good way, I’m talking stank face!
Gets the exhaust out and away from the operator, is the main reason, but they do sound pretty sweet
Ha ok you know it all I guess. Funny mine says hf start only off or on. It’s used to clean bub. When you weld aluminum it stays on all the time to clean oxidation. It can also be used when welding dc to do the same. But I’m just some dumb kid I guess. Even though I have a degree in electronics and have repaired many welding machines and know how they are mostly all designed. Maybe I imagine things
