Monday, March 26, 2012

Exhaust System Technology: Science and Implementation of High Performance Exhaust Systems

Exhaust System Technology: Science and Implementation of High Performance Exhaust Systems


All too often the engine exhaust is an afterthought for the engine and chassis builders, yet its design and construction impacts significantly upon car performance. The exhaust system can be a vital tool for optimizing the performance of the engine, through the way in which its design manipulates the pressure waves that can crucially assist cylinder filling and scavenging. On the other side of the coin, the exhaust system presents many challenges. It is a major loss-path for thermal energy; and it can be a car packaging nightmare.
The environment which a competition exhaust system, and particularly engine headers, must survive, can only be described as a brutal combination of temperatures, stresses, corrosion and vibration. Contemporary exhaust technology can help reduce the problems and help to maximize the potential gains of the system.
BMW Formula-One Engine at Full Power
Figure 1
Publish PostBMW Formula-One Engine at Full Power

Friday, March 16, 2012

How To Build A Low-Cost Sturdy Work Bench From 2x4's And OSB

How To Build A Low-Cost Sturdy Work Bench From 2x4's And OSB

Where the legs intersect the horizontal boards (I call them "stretchers") I always overlap the boards and fasten them securely with four or five 3-inch deck screws or 3-inch nails. When two boards of decent width are overlapped and joined securely, they form a good tight connection that resists movement (sometimes called "racking") when the workbench is bumped or moved.
I say "decent width" because width of these structural members is important. I have built workbenches and shelf units using 2x4's or 4x4's for the legs, and using 2x4's, 2x6's or 5/4x6 deck boards ripped in half (cut lengthwise) on a table saw for the "stretchers". I would never use 2x2's for legs or horizontal supports... they aren't very strong and they aren't wide enough to form a solid connection.
A cheap and sturdy workbench that's easy to build. 

Monday, March 12, 2012

Sunday, March 11, 2012

Thursday, March 8, 2012

Lucky Monkey: Elvira X blacksheep

Lucky Monkey: Elvira X blacksheep: "


Lucky Monkey Noli's baby Elvira aptly named after his grandma who gave him his first bike when he was 4. The full set of photos by Ben of Blacksheep Manila.
2 and a half years in the making a continuing work in progress just like all our bikes.
She tours with us and we do take a lot of gas stops our bike have tiny tanks. Form triumphs over function.

Monday, March 5, 2012

Sunday, March 4, 2012

Friday, March 2, 2012

Thursday, March 1, 2012