390XP Performance at 10,000 Feet Elevation

[srcarr52]

Are you guys purging these with Argon?

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No need, it's not like we are making butt welds on .035" stainless.

 

[Skeans]

I guess I could have put the muffler together and tried it. I was just welding on an outlet and screen on the front. I may do that on the next 661 muffler.

Make sure you use a bronze muffler it'll help diffuse the argon better I know it sounds odd but works great on the hydraulic pipes.

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[Skeans]

No need, it's not like we are making butt welds on .035" stainless.

I get it completely but it'll help on burn through and help with how it welds.

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[mdavlee]

Make sure you use a bronze muffler it'll help diffuse the argon better I know it sounds odd but works great on the hydraulic pipes.

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I don't think I have any of the good purge rigs from work. A piece of steel wool works well over the end of the hose.

 

[Skeans]

I don't think I have any of the good purge rigs from work. A piece of steel wool works well over the end of the hose.

It might cost a few extra dollars but it's well worth it in the end I purge as much as I can even carbon steel it just welds that much better.

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[srcarr52]

I get it completely but it'll help on burn through and help with how it welds.

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Most deflectors are being welded on the outside, so it you don't burn through you don't have to worry about shielding the back side.

 

[Westboastfaller]

Welder talkin" ****
This guy is my hero

 

[mdavlee]

It might cost a few extra dollars but it's well worth it in the end I purge as much as I can even carbon steel it just welds that much better.

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With my baby bottle of argon it wouldn't last too awful long. I can build 3 084 mufflers and it's out

 

[Little Al]

Living near to the Pyrenees in France we often get wok in the 2/2500 metre altitude the saws used run a muffler mod & are tuned at the altitude they are to be used at generally they just seem to lose a few revs not sure how many as tuning is by ear the fallers tend to work in short bursts.

 

[Ted Jenkins]

I work with the USDA FS for most of my resources. Any modification to the muffler could put you in jail. It has been a while since any USDA personnel looked at my equipment. When they did every thing I had was was in good shape ant the mufflers looked great. Here in California any thing to do with a fire is serious. I have been threatened numerous times for being in my normal work area when fire conditions were high. If some one notices a muffler mod even if it is not a mod that would not endanger the landscape it still is a NO NO.

I live and work at 6,000 feet and higher. 8,500 to 9,000 feet are as high as often work. With this in mind all saws need a little timing boost. At least 5 degrees to start with because it makes quite a bit of gain. Thanks