The camdrive:
![Image](http://www.atomracing.se/W9/W9_camdrive.jpg)
Thanks to Clag at Gp-lounge.com for the link.
Excellant points Ciro, no doubt this engine is quite impressive, especially having been built by 1 guy in such short time. He even designed the pistons when he could have easily bought them off the shelf. PC's have definatly improved the quailty of home grown engineering for sure.Ciro Pabón wrote:Close, close. It's a prototype for a thesis by Thomas Johansson:
3 liter W9, at 105 Kg (118 with pipes), 500 Hp, 12.500 rpm. Built in 13 months. Here is the thesis in PDF form:
http://epubl.ltu.se/1402-1617/2006/099/index-en.html
C'mon, Islam, maybe "when you have a hammer everything seems a nail".
I have only praise for Mazda, but the excellent engine the 20B is has 2 liters and the core weighs around 140 kilos in racing configuration, around 300 kilos in the standard, all gadgets included, configuration that I have seen.
For me, the difference is not technical, but of means: the 20B is the work of a corporation during the 80's, this one is the work of one guy in one year and a half in the 00's, that's what catches my eye (and what, I think, proves that PCs have changed the world).
The thesis is an excellent read. I recommend it to all. A very good intro to "newbies" and a refresher course for others beyond that stage. The only disapponting aspect for me was the lack of discussion about head design -- combustion chamber size and shape, number of valves (4, but why?), design of intake and exhaust tracts, and camshft lift and duration. I'm nitpicking - it's a very good work.Ciro Pabón wrote:Close, close. It's a prototype for a thesis by Thomas Johansson:
3 liter W9, at 105 Kg (118 with pipes), 500 Hp, 12.500 rpm. Built in 13 months. Here is the thesis in PDF form:
http://epubl.ltu.se/1402-1617/2006/099/index-en.html
C'mon, Islam, maybe "when you have a hammer everything seems a nail".
I have only praise for Mazda, but the excellent engine the 20B is has 2 liters and the core weighs around 140 kilos in racing configuration, around 300 kilos in the standard, all gadgets included, configuration that I have seen.
For me, the difference is not technical, but of means: the 20B is the work of a corporation during the 80's, this one is the work of one guy in one year and a half in the 00's, that's what catches my eye (and what, I think, proves that PCs have changed the world).
Yeah the W9 looks like a complicated beast and breaks no new ground. Conventional in every aspect. Impressive engineering from these students or student team leader. I still want to see innovation over refinement. This ecomotors engine shows fresh thinking. I know the answer lies in some sort of rotary valve or two stroke design. The conventional poppet valve engine simply uses way too much energy just to move the valve train. I guess this engine has to be a diesel as I cannot see (or imagine) a spark ignition working effectively in that combustion chamber shape. Unless you have radial spark plugs all perfectly timed, how could the flame front efficiently burn the mixture?tomislavp4 wrote:Cool stuff, I envy himbut it´s way too complicated... Anyway, talkin of cool engines, have you guys seen the EcoMotors new oposed cylinder engine? I really see potential in it, it´s sooo much simpler than this beast
http://www.ecomotors.com/technology