TorqSoft Engine design Software * Good stuff *

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http://www.torqsoft.net/index.html
TorqSoft develops software applications that are an aid to motorsport competitors and race engineers.
Our aim is to give you that "winning edge".
Our software tools are designed with your ease of use a top priority.

Piston Position:
http://www.torqsoft.net/piston-position.html

Compression Ratio
http://www.torqsoft.net/compression-ratio.html

Reed Pedal Design:
http://www.torqsoft.net/reed-petal-design.html

Squish Velocity
http://www.torqsoft.net/squish-velocity.html