Speed ratings are a tricky beast. With so many https://www.topspeed.com/cars/best-radar-detectorsreviewed-ar190065.html available it is hard to decide which ones to base your betting on – as a rule of thumb it’s best to avoid the services like timeform and topspeed, not that they are not good; it’s just that will such large amounts of people using them you’ll never find any value in their selections. The best thing to do is to calculate and maintain your own speed ratings – owing largely to the fact that most punters are far too lazy to spend a few minutes each day keeping their ratings up to date, by using methods that require user input or that you created yourself you automatically get an edge over 99% of the betting public!
So the purpose of creating speed ratings to compare the speed of several different horses, in several different races to see which one is faster. It sounds easy but in reality is a tad trickier; you see the finishing times of each race vary greatly depending on several different things…
1. The Distance – The obvious one, the longer the race the longer it will take to run
2. The Going – The condition of the going has a massive impact on the finishing time of a race, the softer the ground the longer the race is going to take
3. The Course – This one is overlooked by most ratings but of massive importance. Each racecourse is different and some are just trickier to get around than others so just because a race takes longer for the same distance as another race at a different track it doesn’t mean the horses will run that slowly again. It can be very deceptive
4. The Weather – Again like the going; wind speed and direction, rain, bright sun etc can all have a profound effect on the time of the finishing time
Those are just the main ones; there are many little things that again will affect the speed of the race. The trick is to apply mathematics, common sense, judgement and knowledge to effectively remove all these factors from the time of the race – so essentially you level off and adjust the numbers to make it look like every race was run over the exact same distance, on the same going, the same track, the same weather etc so you can then compare any race to any other race and find out which horses are truly the fastest!
But…It is still a lot of work, working out the formulas in the first place, spending months tweaking them to get better results and often ending up with a confused jumble that needs to be throw in the bin and started again.