Castlemaine Economy Ride Sunday 22nd
July, 2007
|
Name |
Bike |
finish |
start |
km |
litres |
km/l [indic.] |
km/l [estim.] |
|
Group1: |
|
|
|
|
|
|
|
|
Ben Warden |
Honda CBR954 |
83129 |
83065 |
154 |
10.61 |
14.5 |
14.5 |
|
Simon Trubiano |
Honda CBR929 |
33251 |
33127 |
126 |
7.48 |
16.8 |
16.8 |
|
Geoff Ross |
Triumph 675 |
5796 |
5645 |
151 |
9.79 |
15.4 |
12.9 |
|
|
|
|
|
|
|
|
|
|
Group 2: |
|
|
|
|
|
|
|
|
Cameron Stevens |
Suzuki GSXR1000 |
21136 |
21018 |
118 |
8.48 |
13.9 |
13.9 |
|
Renzo Cunico |
Honda VFR750 |
52829 |
52697 |
132 |
6.82 |
19.4 |
17.3* |
|
David Twentyman |
Hayabusa |
23183 |
23046 |
137 |
11.00 |
12.5 |
10.7 |
|
Dave Wilson |
Yamaha R1 |
17512 |
17387 |
125 |
7.70 |
16.2 |
15.3 |
|
Duncan Ferguson |
|
12280 |
12160 |
120 |
8.70 |
13.8 |
13.5 |
|
Cameron Burgess |
Yamaha YZF1000 |
34489 |
34368 |
121 |
8.58 |
14.1 |
13.8 |
|
|
|
|
|
|
|
|
|
|
Group 3: |
|
|
|
|
|
|
|
|
Paul Southwell |
Honda CBR1000 |
34428 |
34268 |
160 |
9.35 |
17.1 |
17.1 |
|
Dale Shallcross |
Ducati 620 |
41910 |
41750 |
160 |
9.54 |
16.8 |
16.8 |
|
|
|
|
|
|
|
|
|
* winner of Economy Ride 2007
Economy is a function of distance and fuel. Ideally, for a fair comparison, to take account of varying riding conditions such as topology, air pressure, wind, and ambient temperature, all participants would ride the same roads at almost the same time. This did not occur on the ride due to the group effectively breaking up into three smaller groups – as a result of the corner marking system failing when new riders left the corner before the rear rider arrived. Hence, for the purpose of calculation, the participants are split in to three groups.
Group 1 consists of the people stranded on corners past Broadford who completed more kilometres than Group 2. The ride regrouped at Broadford with Ben (extra 32 km), and Simon and Geoff (extra 3 km). Ideally the total distance used in the calculation would be the same, despite what each individual odometer indicated – and they varied wildly. For Group 1, it appears that the Triumph is reading diabolically high. Incidentally, the reading was confirmed. To calculate a more realistic economy reading for the Triumph I standardised against Simon’s 929 reading of 126 km. It is impossible to standardise on Ben and Simon’s odometer readings so the indicated numbers are taken as true. Most likely they are about four percent high.
Group 2 consisted of riders who travelled exactly the same distance, despite being stranded on corners from Strath Creek to Broadford. Group 1 riders came back and the decision was made to have morning tea at Broadford. When Group 3 riders came through they swept up all the remaining Group 2 riders. Despite having travelled the same distance, the odometers varied form 118 km to 137 km. I took Cameron’s 118 km as the standard reference and used that figure to calculate the other readings. So, despite Renzo appearing to have economy of 19.4 km per litre based on the raw figures, in reality it is only 17.3 km. This is because his odometer is reading high because he has changed the gearing by changing the front sprocket – increasing it by one tooth. Similarly, the Hayabusa probably has revised gearing.
Group 3 took the long way to Broadford via Yea, Trawool and back to Strath Creek, rejoining the ride to Broadford. They covered an additional 40 km compared to Group 2. Coincidentally, both Paul’s CBR and Dale’s Ducati registered 160 km to Lancefield, so 160 km was used. CBR1000s are noted for their economy compared to 929s and 954s (1000s have smaller throttle bodies) and Paul missed winning by a whisker. In reality his economy would be about 4% worse than indicated due to the typically inbuilt error.
Renzo Cunico wins a membership on the oldest and almost heaviest bike with the least power. Go figure.
Ben
Warden