As the kinetic trainer is very linear in its power curve there is a calculation that converts mp/h to power. I have converted this to KM's and the information is as below. What this means is that you can attach a cheap speedo to the rear wheel of your setup and still get average, max and current power by converting the current speed, average speed and max speed figures of the reading on your cheap speedo using the table below.  You can identify target average and current speeds that equate to the power you want to train to and used these speed figures in your training.  Alternatively you could also use your polar watch and record laps on it then from the data Work out your average power for the lap. The Polar CS600 watch has enough range to work on the rear wheel.


Formula is Power = (5.244820) * Speed + (0.01968) * Speed * Speed * Speed

Miles	KM	Power
1.0	1.6	5.3
2.0	3.2	10.6
3.0	4.8	16.3
4.0	6.4	22.2
5.0	8.0	28.7
6.0	9.7	35.7
7.0	11.3	43.5
8.0	12.9	52.0
9.0	14.5	61.6
10.0	16.1	72.1
11.0	17.7	83.9
12.0	19.3	96.9
13.0	20.9	111.4
14.0	22.5	127.4
15.0	24.1	145.1
16.0	25.7	164.5
17.0	27.4	185.8
18.0	29.0	209.2
19.0	30.6	234.6
20.0	32.2	262.3
21.0	33.8	292.4
22.0	35.4	324.9
23.0	37.0	360.1
24.0	38.6	397.9
25.0	40.2	438.6
26.0	41.8	482.3
27.0	43.5	529.0
28.0	45.1	578.9
29.0	46.7	632.1
30.0	48.3	688.7
31.0	49.9	748.9
32.0	51.5	812.7
33.0	53.1	880.3
34.0	54.7	951.8
35.0	56.3	1027.3
36.0	57.9	1107.0
37.0	59.5	1190.9
38.0	61.2	1279.2
39.0	62.8	1371.9
40.0	64.4	1469.3
41.0	66.0	1571.4
42.0	67.6	1678.3
43.0	69.2	1790.2