Did a muffler mod on my Husky 435. I may have goofed!...

[ANewSawyer]

I have been working on my husky 435, getting ready to run it. I wanted to muffler mod it, since I already removed the spark screen. I got out my dremel and set to work enlarging the outlet under the deflector. But I ground to far forward and the outlet now extends out from under the deflector. Is this gonna be a problem? Like melt the top cover or the chain brake problem? I took the top cover off for this photo. They gray is the chainbrake handle.

 

[KenJax Tree]

No its fine i did the same thing on my 346 and 550 and neither one has melted anything

 

[blsnelling]

The exhaust velocity will be shooting forward. I think you'll be fine.

 

[ANewSawyer]

Kewl! Thanks guys!!! Now to find some wood to cut...

 

[RedFir Down]

I recently made that mistake on a Husky 576. I kept a close eye on it and after 2 cuts (with a 28" bar buried) it was starting to melt/bubble the chain brake handle.
So I cut the stock deflector off and made a new deflector that is bigger. Now I need to braze it on.

If you think it would help try using some heat wrap on the under side of the top cover and chain brake handle.
Just keep a close eye on it.

 

[Teddi]

I used several layers of aluminized duct tape (the real stuff) on a top cover when I cut out too much that wasn't covered by a deflector cover. It seemed to work pretty well. It got hot, but the tape stayed in place and nothing melted.

 

[ANewSawyer]

I had a thought to glue or epoxy extra heavy duty aluminum foil to the bottom of the cover and chain brake handle. I guess you mean HVAC foil tape when you say aluminized duct tape. I guess it would work too. Like this: http://www.lowes.com/pd_350444-98-3340_0__?productId=4009889&Ntt=aluminum+tape&pl=1&currentURL=?Ntt=aluminum+tape&facetInfo=

 

[Teddi]

That's exactly what I meant, HVAC foil tape. I put it on several layers thick.

 

[ANewSawyer]

Insurance is not a bad thing. Thanks for the tip!

 

[Brandi Harris]

The exhaust velocity will be shooting forward.

 

[7sleeper]

Wouldn't put ANYTHING on the chainbrake!!!

Why?

Simple, you are changing the weight of the chainbrake so that the inertia mechanism might NOT WORK!!! as designed!

Personally I would simply use it and if a problem evolves, which I highly doubt since we are talking mini cc saws and there is hardly any serious heat to be expected compared to a 70cc saw. If a problem develops you can do a el cheapo repair by just lengthening the "roof".

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