cast alum vs cast iron

   / cast alum vs cast iron #11  
I agree on the iron. It's still king and most manufactures brag about this material in their sales information if they use it. That alone should tell you something. Never heard of anyone bragging about cast aluminum.
 
   / cast alum vs cast iron #12  
Regardless of material it's all about the design strength.
 
   / cast alum vs cast iron #13  
My opinion: It depends on design and material used. There are times when cast aluminum is stronger than cast iron and vice versa. No one ever talks about compacted graphite iron much... bring best of both worlds -- lightness and strength. But expensive.
 
   / cast alum vs cast iron #14  
Grew up in Defiance Ohio home to General Motors Powertain plant. Cast iron engines, axles, and other auto and truck parts. Friends worked there out of high school for their entire lives in the early 1970s. Change over to all aluminum this year. Employment has gone from 3500 to 1500 people. 350 and 4.3 engines are a thing of the past.
 
   / cast alum vs cast iron #15  
Regardless of material it's all about the design strength.

Iron has a higher young's modulus, better stability, fatigue resistance, vibration and noise dampening. But well designed aluminum is just fine also, especially if Iron castings are crude and porous.

On a tractor, all things being equal, neglecting weight, I vote Iron. Be nice if CGI but grey is all you seem to see used.
 
   / cast alum vs cast iron #16  
There is a big difference in the two designs you are referring to. I sell both makes you are comparing. We do far less warrantee work on the Kubota then the NH chassis. The frame is steel on the Kubota vs the cast iron on the NH design. The aluminum housing on the Kubota does nothing other then support the drive train parts as it is not a structural part of the tractor. They in your comparison do not do the same job! The rest of it comes in as the lighter is always better as it allows you to place the correct
weight in it's best place.

Very well explained.
 
   / cast alum vs cast iron #17  
Compared to the competition, Deere uses lots of aluminum and plastic on their E Series tractors, including rear axle/diff and transmission housings. They seem to be priced reasonably in their class, though they are lacking in features and lift capacities. I'm sure they sell lots of them (tons for sale on the used market) and I haven't heard many complaints from owners, considering how many are out there. As large as Deere is, they're not going to release a product that could potentially have reliability issues, especially with all the internet exposure and how websites like this one can affect purchase decisions. Going by sheer mass, Branson seems to have the heaviest compact tractors, with Deere being the lightest, and lots of brands in between (Mahindra, Kubota, LS, Tym, Massey, New Holland, Kioti, etc). For the vast majority of us, buying the "right" tractor comes down to many different factors, such as purchase price, dealer location and attitude/capability, driving comfort, PTO and loader lift capacities, horsepower, anticipated resale value, and even color. In the end it's all about understanding your application and expectations and hopefully finding the tractor that makes you happy.

It's also knowing when you are dredging up a thread that has lain dormant since Feb. 2004.
 
   / cast alum vs cast iron #18  
I agree on the iron. It's still king and most manufactures brag about this material in their sales information if they use it. That alone should tell you something. Never heard of anyone bragging about cast aluminum.

Yep, and they can enjoy their cast iron chainsaws, drills, flashlights, wheel barrows and all the rest. :D

Same applies to transmissions and rear ends. Engine blocks as well. Depends on the design. AL is often better.

Other parts... fiberglass sometimes, plastic sometimes.
 
   / cast alum vs cast iron #19  
Yep, and they can enjoy their cast iron chainsaws, drills, flashlights, wheel barrows and all the rest. :D

Same applies to transmissions and rear ends. Engine blocks as well. Depends on the design. AL is often better.

Other parts... fiberglass sometimes, plastic sometimes.

Not a fair comparison. A tractor is supposed to be heavy. A chainsaw and flashlight are supposed to be light.
 
   / cast alum vs cast iron #20  
Not a fair comparison. A tractor is supposed to be heavy. A chainsaw and flashlight are supposed to be light.
Since when is a tractor supposed to be heavy?
 

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