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Hey guys,
Getting my ht20 ready for another heavy winter season. I al looking to upgrade my stacks. I bought the tractor without a manifold and a dual stack system, which looks and sounds pretty great. But with my 15 month old son loving my tractors and seat time as much as me, I would like to quit it up a bit. I am going to put some Stanley IH-1 mufflers on it, and would like to make some brackets for added support. I have a good idea of what I would like to do, but some pictures and ideas from your set ups would be great before I start the project.

Thanks!
 

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Every time I see straight pipes on a mower i think about my Honda 90 I had at 16. I think it was a 1964 model. The muffler came off fairly quickly. The resulting straight pipe was loud. In order to keep the police happy I bought a baffle which worked very well. It consisted of a washer that just fit inside the pipe with a small bolt welded to the edge. A hole was drilled in the side of the pipe about 3" from the end, the washer went in to the end of the pipe and the bolt stuck out the hole. Now is where memory begins to fail. It had a piece curved to match the outside of the pipe then a spring then a knurled nut to tighten the spring. With this setup the washer could be turned parallel to the pipe or transverse. when it was parallel it was a straight pipe, when transverse it was amazingly quiet. the spring allowed the washer to move enough to prevent back pressure building Of course the harder you pushed it the louder it got. Don
 

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Every time I see straight pipes on a mower i think about my Honda 90 I had at 16. I think it was a 1964 model. The muffler came off fairly quickly. The resulting straight pipe was loud. In order to keep the police happy I bought a baffle which worked very well. It consisted of a washer that just fit inside the pipe with a small bolt welded to the edge. A hole was drilled in the side of the pipe about 3" from the end, the washer went in to the end of the pipe and the bolt stuck out the hole. Now is where memory begins to fail. It had a piece curved to match the outside of the pipe then a spring then a knurled nut to tighten the spring. With this setup the washer could be turned parallel to the pipe or transverse. when it was parallel it was a straight pipe, when transverse it was amazingly quiet. the spring allowed the washer to move enough to prevent back pressure building Of course the harder you pushed it the louder it got. Don
We called them snuffers Had some on my Honda 305 scrambler in 1966 and they did help keep the cops off my back.

Google snuff or not baffles , and you will find info on how to make them.
 

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We called them snuffers Had some on my Honda 305 scrambler in 1966 and they did help keep the cops off my back.

Google snuff or not baffles , and you will find info on how to make them.
Yep those are what I had, But in the Utube video the guy shows the hole going through both sides of the pipe. The original was only held on one end of the washer. Don
 

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Here's how I braced the stack on my M18. I'm using a single IH 1 muffler.

[sharedmedia=core:attachments:168181]
 

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How do you like the IH-1?
Sounds great as a single. I made my manifold from a motorcycle header, perfect ID for the cast iron.

[sharedmedia=core:attachments:168180]
 
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