Finally got the Mack Mag built!

[Kpi890]

Here’s that new gas line @FurryOnTheInside

 

[FurryOnTheInside]

View attachment 82657View attachment 82658
Here’s that new gas line @FurryOnTheInside

It wouldn't work underneath? I'm sure it'll flow, I'm just not keen on the aesthetic of going over the top of the frame, personally.
Your bike though!

 

[Kpi890]

It wouldn't work underneath? I'm sure it'll flow, I'm just not keen on the aesthetic of going over the top of the frame, personally.
Your bike though!

If I had gone underneath it puts it too close to the cylinder head... very little clearance there.

 

[FurryOnTheInside]

If I had gone underneath it puts it too close to the cylinder head... very little clearance there.

Could you if you use two 90° elbows to shift from right to left? The elbows tight up against the underside of the top tube?

 

[Kpi890]

HPS 1 Foot Silicone Tube Coupler Hose Turbo Hot Side Aramid

Motorcycle Modified Muffler Exhaust 150CC Racing Scooter Dirt Bike ATV 2 Stroke 727670536836 | eBay

Use the 7/8" ID hose
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Muffler came really fast from ebay and man this thing should be called the absolute silencer! I put it on the bike and you literally cant hear the exhaust at all, I think it's quieter than a stock HT kit. I havent run it a whole lot yet but the muffler seems to breathe really well I don't notice a loss in power so far. I didn't expect it to quiet it all the way I thought it would just change the tone to something more reasonable. For $15 shipped to my door that quick I'm about to order 3 more to experiment with!

 

[gary55]

Muffler came really fast from ebay and man this thing should be called the absolute silencer! I put it on the bike and you literally cant hear the exhaust at all, I think it's quieter than a stock HT kit. I havent run it a whole lot yet but the muffler seems to breathe really well I don't notice a loss in power so far. I didn't expect it to quiet it all the way I thought it would just change the tone to something more reasonable. For $15 shipped to my door that quick I'm about to order 3 more to experiment with!

A lot of people are cutting them in half, drilling out the rivets and re-riveting the end on. They look a little better shortened, but I kind of like the quiet. it's weird how quiet they are with no flow restriction. Here's a pic. for those who want to see what's inside.
View media item 61381

 

[Kpi890]

A lot of people are cutting them in half, drilling out the rivets and re-riveting the end on. They look a little better shortened, but I kind of like the quiet. it's weird how quiet they are with no flow restriction. Here's a pic. for those who want to see what's inside.
View media item 61381

It honestly did amaze me how quiet it was... and I don't think there is any restriction I have found so far. I am extremely impressed with it so far, but not sure how much I like how quiet it made the bike... it sounds like nothing if that makes sense lol. When I pull the muffler off the bike is like a motocross bike whining loud at the high rpms and now its like your grandma's vespa with it on hahaa!

 

[gary55]

Gota love a sleeper.

 

[Jesus]

I’m building a motor bike with a mongoose Mack mag but I’m having a hard time with getting the rear sprocket installed on the back tire. Can you give me some detailed instructions on how you did it

 

[gary55]

I’m building a motor bike with a mongoose Mack mag but I’m having a hard time with getting the rear sprocket installed on the back tire. Can you give me some detailed instructions on how you did it

are you using a sprocket made for disc brake attachment? I'm guessing your mag is set up for disc brakes.