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Christ · 07-26-2013, 03:14 AM

I decided I'm going to build a DIY centrifuge, and I was going through the paces figuring out where to source some materials, etc...

So I thought about using a brake drum from a large truck, with a diameter of ~ 15" (380cm)

I used a G-Force calculator because I'm kinda special when it comes to the more advanced maths and just wanted a quick answer... plugging in the numbers I was asked for [radius and RPM] yielded an answer of almost 24,600g.

The numbers I gave are r=190cm, RPM = 3400.

This is basically representative of a 15'' drum spinning at 3400RPM, but it doesn't seem right that the (g) experienced at the outer edges of the drum will be around 24,600g...

I'm not even positive that a cast iron brake drum would hold itself together at that force.

Edit:

Nevermind, I really shouldn't math when it's so late. Stupid decimals.

07-26-2013, 03:14 AM	#1 (permalink)
Christ Moderate your Moderation. Join Date: Nov 2008 Location: Troy, Pa. Posts: 8,919 Pasta - '96 Volkswagen Passat TDi 90 day: 45.22 mpg (US) Thanks: 1,369 Thanked 430 Times in 353 Posts	G-Force calculation I decided I'm going to build a DIY centrifuge, and I was going through the paces figuring out where to source some materials, etc... So I thought about using a brake drum from a large truck, with a diameter of ~ 15" (380cm) I used a G-Force calculator because I'm kinda special when it comes to the more advanced maths and just wanted a quick answer... plugging in the numbers I was asked for [radius and RPM] yielded an answer of almost 24,600g. The numbers I gave are r=190cm, RPM = 3400. This is basically representative of a 15'' drum spinning at 3400RPM, but it doesn't seem right that the (g) experienced at the outer edges of the drum will be around 24,600g... I'm not even positive that a cast iron brake drum would hold itself together at that force. Edit: Nevermind, I really shouldn't math when it's so late. Stupid decimals. __________________ "¿ʞɐǝɹɟ ɐ ǝɹ,noʎ uǝɥʍ 'ʇı ʇ,usı 'ʎlǝuol s,ʇı"