custom ud pulley

[sam c.]

Originally Posted by Topless

Space-X Technologies.

Wow! Maybe I'm a bit of a dreamer, but I believe SpaceX is one of a small handful of companies that are currently in the process of changing the course of human history right before our eyes. Very nice!

[Topless]

Originally Posted by sam c.

Wow! Maybe I'm a bit of a dreamer, but I believe SpaceX is one of a small handful of companies that are currently in the process of changing the course of human history right before our eyes. Very nice!

I absolutely agree. Man on Mars in our lifetime I think. These guys are very focused and determined and currently have a $2Bil satellite launch schedule on the calendar... And Tom owns a Boxster.

[sam c.]

Originally Posted by Topless

Man on Mars in our lifetime I think. These guys are very focused and determined and currently have a $2Bil satellite launch schedule on the calendar

...and who says capitalism and free enterprise don't work?

[Jake Raby]

I have not tried a 3" pulley. My hypothesis is it would be great on the track, but would suffer greatly in highway scenarios. I say this because 4" seems to be on the ragged edge.
Have fun.

Send it to me and I'll dyno it back to back and test some other dynamics of it and how they impact the engine, too.

Just like bigger is seldom better with an engine displacement and "just right" is the hardest sweet spot to find, there becomes a point where smaller is not better with something like these pulleys.

[sam c.]

Awesome! Will do.. yeah, that sweet spot is what I'm curious about. I plan on cutting a 3" to start with and monitor the real world impact on cooling, charging, and drivability. Getting some dyno numbers would be great data. If the 3" turns out to be crap, I'll step back and do a 3.5". If the 3" is good to go, I'll have a 2.5" cut just to see what happens.

[The Radium King]

i'd also look at the size of other pulleys in the system. get too small and you are actually increasing the amount of work the engine has to do, as you lose the benefits of mechanical advantage.

[sam c.]

yeah, you def loose leverage as you go down in size. The key is to find that sweet spot, as Jake pointed out. And who knows, that sweet spot may end up being 4" and all this was nothing more than a validation of what's already being done.