Author Topic: muffler tech  (Read 750 times)

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Offline countryhog

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Re: muffler tech
« Reply #10 on: October 01, 2013, 01:25:28 pm »
anxiously waiting for some results.
now is never here but the past is always present.
semper fi ya'll

Offline Adirondackstihl

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Re: muffler tech
« Reply #11 on: October 01, 2013, 03:04:54 pm »
One of the most important functions of a chainsaw muffler is to dissipate heat. Stainless does not dissipate heat very well. On top of that, the material used in producing chainsaw mufflers is VERY thin. Couple thou at best. So the thicker the material, the worst off you actually are. What material thickness are you using?


Kudos to your fabrication skills!!

Offline doreadeal

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Re: muffler tech
« Reply #12 on: December 03, 2013, 10:01:41 am »
Sorry, have been really busy....lots of fabrication jobs popped up. Agreed that stainless holds heat, but really the primary function of exhaust on any engine is exactly that, exhaust. If removal of heat was high on the list they would be aluminum and have fins. True, some engines in history did have fins but far many don't. Plain steel doesn't suck much heat off the powerhead. I would surmise that the added flow itself will remove just as much heat as the steel muffler. I'm not even sure how you would prove it one way or the other, cause the two mufflers will require different tunes, so heat readings won't tell. I just wasn't going through all this work to have it rust out. Ill get a gauge on the stainless tonight and post it. Its a bit thicker then the stock muffler steel. Not much though. Ill grab some pics of the current progress too, which unfortunately isn't far.

Offline doreadeal

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Re: muffler tech
« Reply #13 on: December 03, 2013, 08:54:58 pm »

Offline doreadeal

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Re: muffler tech
« Reply #14 on: December 03, 2013, 08:59:11 pm »

Offline doreadeal

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Re: muffler tech
« Reply #15 on: December 03, 2013, 09:03:56 pm »
Seriously, if I had to do it again it would be faster. Not that I've had time to play with it. The way to do this would be the bed the cavity with clay, smoothing the gullies and such. Then spraying expanding foam in it so you had a perfect model. Building a box and then the trial and error stuff is way too time consuming. Of course, if I didn't want max volume it would also have been easier.

Offline Moparmyway

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Re: muffler tech
« Reply #16 on: December 03, 2013, 09:04:20 pm »
WOW !!!
That thing looks awesome !!

Offline doreadeal

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Re: muffler tech
« Reply #17 on: December 04, 2013, 05:27:50 am »
Thanks. Hopefully now that the schedule is cleared up a bit I can complete it.

Offline 3000 FPS

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Re: muffler tech
« Reply #18 on: December 04, 2013, 12:38:03 pm »
Looks pretty interesting so far.   I am curious on how you attached it to the exhaust port.   I do not see any screws or bolts.   
PP 505, 475, 445.

Offline doreadeal

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Re: muffler tech
« Reply #19 on: December 04, 2013, 05:24:25 pm »
Its not yet, I just have the gasket surface. Its actually jigged up in my drill press as we speak. Through bolts like the original with tubes...also like the original. This part is going to be tricky.

 

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