Hi Stebbo,
The database is private, an not open for subscription ( i need an edge).
A one turn track is basically a horse shoe layout of the race distance. ie they start in the back straight an finish in the front straight, most one turn tracks have a 60 - 65 metre radius turn whereas two turn tracks are around the 50 metre radius

I think the first goal if your producing an Odds Line is to develop an Oddsline that is within a % point or two of the General Publics Odds Line.an is smooth in its transition thru the rankings, when tested

Then you produce a performance envelope for each runner, that is, what is it's Mean and its Standard Deviation, the STD is maybe one of the most important formulas in racing.This then allows you to produce an OddsLine.
Then you would be able to compare, both your Public Generated Line an your own to at least give you an idea, as too what sort of investmnent you may make on this race.

I personally use Monte carlo simulations, using a variable that will outperform the General Publics Line's best variable for that particular race.