[modeleng] Going round the bend

When going from a straight track to a curve, one should build in a 
transition curve, to make the change gradual rather than abrupt.

One can get a reasonable approximation to a transition curve by using a 
series of short curves of gradually increasing radius.
A decent CAD program will draw one, which could then be scaled, and made 
using a table of offsets.

However, there is a formula to calculate transition curves which I learned 
many years ago, and, naturally have totally forgotten.

Can anyone tell me what it is?


Alan Stepney


http://www.alanstepney.info
Model Engineering & steam engine information pages

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