Sunday

The Engine Building Davinci Code



The Engine Building Davinci Code
By Don Terrill (c)2005

It's there, written into every sanctioning body rule book, clues to the Holy Grail of horsepower. The clues are not encoded or hidden, they are in plain sight - you just need to ask the right questions:
  1. Why did they feel the need to write this rule?
  2. What did a racer do to prompt this rule change?
  3. How can I "legally" apply this to my form of racing?
Here's an excerpt from the Formula 1 rule book - look for the clues.
  • 5.1.5 Only reciprocating poppet valves are permitted.
  • 5.1.5 The sealing interface between the moving valve component and the stationary engine component must be circular.
  • 5.6.1 Variable geometry inlet systems are not permitted.
  • 5.6.2 Variable geometry exhaust systems are not permitted.
  • 5.8.1 Ignition is only permitted by means of a single ignition coil and single spark plug per cylinder. The use of plasma, laser or other high frequency ignition techniques is forbidden.
  • 5.8.2 Only conventional spark plugs that function by high tension electrical discharge across an exposed gap are permitted.
  • 5.9 Engine actuators : With the following exceptions hydraulic, pneumatic or electronic actuation is forbidden : a) Electronic solenoids uniquely for the control of engine fluids ; b) Components providing controlled pressure air for a pneumatic valve system ; c) A single actuator to operate the throttle system of the engine.
  • 5.10 With the exception of electrical fuel pumps engine auxiliaries must be mechanically driven directly from the engine with a fixed speed ratio to the crankshaft.
  • 5.11.1 Other than injection of fuel for the normal purpose of combustion in the engine, any device, system, procedure, construction or design the purpose or effect of which is any decrease in the temperature of the engine intake air is forbidden.
  • 5.11.2 Other than engine sump breather gases and fuel for the normal purpose of combustion in the engine, the spraying of any substance into the engine intake air is forbidden.
I recommend you read every motorsports rule book you get your hands on, and not just sanctioning bodies you plan on running, but every form of racing.

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