Trimmer porting/MM stihl

[Jimbo209]

Have recently got 3 new brush cutters FS200/250/480
Just need minor fixes pro@era and filters mostly.

Is there much to be gained from muffler mod and or light exhaust porting

Will.be used with heavy trimmer line maybe a blade in long grass

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[Franny K]

There must be old threads on this. I doubt there is too much to be gained as the larger lines and longer lengths put a wind load. I would assume the guard being removed to allow longer line would be in any plan for more power, I remove mine not sure power is much of an issue if one stays with the line length limited by the guard. Then the angle gears are sized for the stock power most likely. A blade at least for me carries a lot of inertia in spinning mass, then the mass of the engine's rotating parts, for me the additional power at least beyond 35cc stock does not seem to matter much if any. At least for what I use these things for. If you do it post how much bigger a circle of the same line you end up being able to spin.

 

[Jimbo209]

Thanks.I.have to get them running first bi suppose.
I did see Brads vid of a Redmax blower a while ago was hoping for similar results.

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