Patterns-Orientation and runner system suggestions

[not-a-number]

Im looking for some advice on part orientation when gravity filling.

I have a sump Im casting and I am at the stage of designing the runner system.
The ideal orientation for this part (for ease of pattern making and runner system design) I feel would be to place the fins at the top.


Images below.


My concern is that with the fins at the top they will collect dross/slag and also not have a very high pressure for how thin they are.


Its a big part. 220mm high and 1m long. Mass is 16Kg aluminium - runner system.


Should I be concerned about this? Or could it not be a problem if I put some risers in there?


Bigger question. How would you do the runner system? Any advice much appropriated


This is my project if anyone is interested.
https://oldschool.co.nz/index.php?/topic/53938-bugatti-t5759-engine-project/



https://i.imgur.com/zSF6SUHl.jpg


https://i.imgur.com/W3aPwcWl.jpg


https://i.imgur.com/78a9G8ll.jpg

[clear out]

I had a quick look at your project and if your doing this stuff at 31 I hope I live long enough to see you make something of your own design.
Im a patternmaker by trade but a way out of touch with modern foundry practise.
We have used an iron foundry here in Sydney that has a computer programme for runners etc.
I have an English book somewhere by the mob who did Aluminium casting for formula one stuff, ill have a search for it, There was some good stuff in there.
Just blown away by your work.
I know some dudes who’ll make the body for you here in Oz. Motorretro.
I saw a few Bugattis at this years Mila Miglia in Mantua whilst on hols in Italy.
H.

[not-a-number]

I had a quick look at your project and if your doing this stuff at 31 I hope I live long enough to see you make something of your own design.
Im a patternmaker by trade but a way out of touch with modern foundry practise.
We have used an iron foundry here in Sydney that has a computer programme for runners etc.
I have an English book somewhere by the mob who did Aluminium casting for formula one stuff, ill have a search for it, There was some good stuff in there.
Just blown away by your work.
I know some dudes who’ll make the body for you here in Oz. Motorretro.
I saw a few Bugattis at this years Mila Miglia in Mantua whilst on hols in Italy.
H.


Cheers.

How would you have done it in the 'good ol' days'?
I dont know modern foundry practice, I dont actually know any foundry practice for that matter! Its been a combination of Google images, 1 book, intuition and guessing.

[clear out]

This is the book.
I think something like this and a chat to foundry people over there in the states would be more use than any memories I have from 40 plus years ago.
The US were the ones to pioneer the thin wall V8s in cast iron which obsoleted the Oldsmobile,Buick Al engines that Rover and Repco played with.
They also developed the lost foam, non binder sand moulding which was vacuum compressed and bottom fed.
H381192381191381190

[not-a-number]

This is the book.
I think something like this and a chat to foundry people over there in the states would be more use than any memories I have from 40 plus years ago.
The US were the ones to pioneer the thin wall V8s in cast iron which obsoleted the Oldsmobile,Buick Al engines that Rover and Repco played with.
They also developed the lost foam, non binder sand moulding which was vacuum compressed and bottom fed.
H381192381191381190


Thats actually the book I have been using. I need to read it in a lot more depth I think.

[bezzastv]

This is the book.
I think something like this and a chat to foundry people over there in the states would be more use than any memories I have from 40 plus years ago.
The US were the ones to pioneer the thin wall V8s in cast iron which obsoleted the Oldsmobile,Buick Al engines that Rover and Repco played with.
They also developed the lost foam, non binder sand moulding which was vacuum compressed and bottom fed.
H381192381191381190

Excellent book, best one I ever got on the subject about runners & risers.

[not-a-number]

This is the book.
I think something like this and a chat to foundry people over there in the states would be more use than any memories I have from 40 plus years ago.
The US were the ones to pioneer the thin wall V8s in cast iron which obsoleted the Oldsmobile,Buick Al engines that Rover and Repco played with.
They also developed the lost foam, non binder sand moulding which was vacuum compressed and bottom fed.
H381192381191381190


Yip thats the one Ive got. I think I need to get some simulation software.