welding exhaust pipe

[brewzalot]

Is there any physical reason an underslung exhaust pipe couldn't be cut at angles at the bends and welded instead of bending?

I have access to thin wall tubing, and decent welding skills.
Obviously the look would be a little different but I'm ok with that.

Thoughts ?

[Slim140]

I vote try it, just be careful if you have to tack it together on the tractor and don’t be welding around the gas tank.

[Jeff Silvey]

I agree with Shane.

[Gary Dotson]

Sure, exhaust pipes are often welded. Do a nice job welding and you can grind the welds and end up with a good looking pipe.

[MiCarl]

Only reason I can think of is hard angles concentrate stresses vs. a curved section. It might be prone to cracking at the joints.

[Larry in WNY]

If it's not galvanized yes. Zinc gas is created if welding galvanized metal which is poisonous.
Larry

[brewzalot]

It might be prone to cracking at the joints.

don’t be welding around the gas tank

If it's not galvanized

No welding near gas or using galvanized pipe, stress is a good point.
I was concerned more with hard angles affecting exhaust air flow.

thanks for the input- will give it a try
Tim

[outdoors4evr]

2 small cuts may turn out better than one large cut and a sharp bend.

[Clemsonfor]

It might be prone to cracking at the joints.

don’t be welding around the gas tank

If it's not galvanized

No welding near gas or using galvanized pipe, stress is a good point.
I was concerned more with hard angles affecting exhaust air flow.

thanks for the input- will give it a try
Tim

At the size of these exhaust pipes and only 9hp at low rpm I don't think you need to worry much about the exhaust flow path. Doubt you will notice any difference.

If we were talking a 600hp race car then mandrel bends would be what you want and no hard or sharp transitions.