Ratings help wanted

[tommylorna]

I would like help with speed ratings, for example if a horse ran 10 furlongs and another 7 furlongs.
I can give each horse a rating but I dont know how to adjust for the distance they ran.
Can anyone help please.

[wyldesyde]

I used to be a big fan of the late Ken Hussey, who compiled speed figures for ‘Sporting Chronicle Publications’ under the name ‘SPLIT -SECOND’.

I don’t know if this guide devised by Mr. Hussey will help, but here it is:

5f – 6f……..1 length = 4lbs
7f – 9f……..1 length = 3lbs
10f – 14f…. 1 length = 2lbs
15f+………..1 length = 1lb

1 second = 5 lengths

Best of luck!

[TheBluesBrother]

The lbs per length which I devised for each course and distance can be obtained from my

standard time list

(see below) along with the

furlong distances

to use.

I have

highlighted

the use of the lbs per calculation (Distance adjustment) below.

So in this example, the lbs per length calculation for 5f trip at the Curragh is

3.37

, if a horse had run instead over 6f you would adjust the distance and use

2.82

lbs per length

(See Standard times list)

.

In this example I used Dave Edwards

"Top Speed"

going allowance as an example, when I compile my own speed ratings I use my own going allowances

Here is an example how I rated the 2yo

"Dawn Approach"

over 5f trip at the Curragh on Sunday 25th March.

One thing to note is that I do not use

Weight For Age

in my calcuations, you can if you want.

1. The going time for the race was

+6.93s

above standard.
2. The going allowance was

-0.9s/f

per furlong (the yeiding going was slowing the horses down).
3. I use

.2 secs

per length.

Now for the calculation:

multiply 5 furlongs by the going allowance i.e. -0.9

5 x -0.9 = -4.50s

As the race was run

+6.93s

outside standard subtract the updated going allowance correction i.e

-4.50s

. (note that if the going allwance was

+4.50s

you will have to add the going correction)

+6.93-4.50 = +2.43s.

Now divide the corrected going allowance of +2.43 by .2 secs per length.

2.43 /.2 = 12.15 lengths.

multipy the lengths by the lbs. per length calculation which is 3.37 lbs per length for 5f trip at the Curragh.

12.15 x 3.37 = 40.94

now subtract the figure 40.94 from 100.

100-40.94 = 59.06 or rounded down 59.

As Dawn Approach carried

9st 5lb

we now have to adjust the speed figure of

59

.
For weight carried over 9st adjust the figure for the rating i.e.

59 + 5lb =

64

( this is Dawn Approach speed figure).

So if Dawn Approach had carried 8-11 we would have had to subtract 3lb from his speed figure i.e.

59 – 3lbs = 56.

Once you have arrived at any horses speed figure you could add the Weight for age allowance, I don’t because it corrupts the ratings.

Compiling speed ratings is easy

Dawn Approach

ended up as my highest rated 2yo with a speed figure of

102

[mlmrob]

Excellent post Blues Brother. Do you use excel to calculate the figures?

[TheBluesBrother]

Excellent post Blues Brother. Do you use excel to calculate the figures?

Yes I do.

I use an excel macro which lays out the whole meeting, all I do then is add the distance in furlongs + my lbs per length calculations, this calculates the speed figures to a going allowance of 0.00s/f per furlong.

The next step is to then build up the excel table using various factors and means which I have developed, to calculate the going allowance.

Without the means to work out the daily going allowances, your speed figures will never be accurate

[Slowly Away]

I would like help with speed ratings, for example if a horse ran 10 furlongs and another 7 furlongs.
I can give each horse a rating but I dont know how to adjust for the distance they ran.
Can anyone help please.

To answer your specific question I adjust all race distances to a mile

So if the 7F race was 3.5 seconds slower than standard, divide that by 7 and times by 8 = 4 seconds per mile slow

if the 10F race was 5 seconds slower than standard, divide by 10 and times by 8 = 4 seconds per mile slow

then work out your ratings on the basis of the ‘per mile’ time so you’re always comparing like with like

[mlmrob]

Thanks Blues Brother, learning curve continues to rise.

[Author]

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