The Results from the Qualifying Session today at Circuit Courville are in. Here is Christain's report:
OK. I just finished the qualification. Here's the raw data, I'll let you format it to show it to the guys on the appropriate forum.
I ran the green lane for 90 seconds with each car, at 10.25 volts, which is the normal voltage for my track. The surface is very smooth so results are quite different than the ones from the first race on Ninco track (just like last year's Québec Proxy).
Tires were cleaned before each qualification heat and timing was stopped when there was a deslot. Each car was able to run between 9 and 11 laps, which gave me enough time to get the most out of each car. The Qual order was randomly chosen by the timing software.
For the race, the cars will be driven in groups of 4 (the 3 slowest cars will run together as the first group), also at 10.25 volts.
Very interesting...... Terry's #47 Honda once more to the fore. It's the only car shod with NSR tires, everyone else is on urethanes. Have we all miscalculated?
Post by David Mitcham on Sept 23, 2017 7:32:43 GMT -5
Something of a turnaround in performance and reported characteristics. Team Policar has slumped but at least we are all together and within 0.2 seconds of each other which must mean something. My consolation is that I qualified ninth last time and and finished fourth but somehow I don't think that's about to happen again! A great run by Terry and its no surprise to see Chris in second place. Interesting point about tyres; I did try some NSRs in testing and they were good over a couple of laps but thereafter seemed to lose some grip whereas the urethanes were more consistent on longer runs.
Recognizing the low (10.5 V) power level, I plotted qualifying position vs weight to see if any insight emerged. There was a weak correlation between weight and position, lighter= higher, but enough outliers to suggest that it is a minor factor.
I'll need to seek explanations (excuses?) elsewhere
Post by Andrew Rowland on Sept 23, 2017 17:32:53 GMT -5
Well the excuse from the Policar point of view is indeed the voltage. Up at 12v which they are designed to operate at, normal in line cars become more of a handfull (in my humble experience). But hey i'm sure there are just so many variables that anything could be disproved.... Looking forward to know the outcome, come what may! Andi
Post by Terry Newsome on Sept 23, 2017 17:44:10 GMT -5
Very pleased with my Hondas' pace, and the comments made are quite pleasing, fingers well and truly crossed for race day.
Interesting comments regarding tyre selection, I am a Pauls devotee, all my club cars and indeed most of my proxy cars are shod with Pauls excellent urethanes, however , in testing I could not get a smooth run with various combinations of Pauls tyres, the 18K scaley motor was just too much,even at 10.5 volts, it was only when I tried the NSR tyres did I achieve any sort of smooth running, of course the longevity is a concern, but thats the game we are in,
Incidentally I did go with the Supergrip NSR tyres first and they were worse than Pauls urethanes
Hi everyone. I'm Christian Gingras, owner of Circuit Courville and owner of Slot Car Corner Canada, one of the proud sponsors of this proxy.
Pictures will be sent before the end of the weekend.
We ran the proxy yesterday afternoon and I sent the results to Stewart. He must be off for the weekend (the weather is record-breaking nice here this weekend!). So, here they are:
And here's what I wrote to Stewart when sending the results:
We had 4 racers that stayed in the same lane for all heats so every car got the exact same treatment (4 minutes per lane). There was a track call for each deslot (not enough marshalls to do live marshalling). Some cars qualified weel and got lesser results in the race because I was able to do one or two good laps with them in qualification. But in a race with more than 100 laps, they were just too difficult to control lap after lap. That explains the differences between qualification and race, for the most part.
The #7 car is fine, it just lacks traction on a smooth surface like my track has and the rear just wants to go around the front entering and exiting corners. I can understand it's way better on Ninco track. On a smooth surface, it's just not possible to go faster in the corners.
Car #6 just felt slower this afternoon, like something tightened around the rear axle. Nothing apparent, I checked. Car #69 was just too wild to control during the race. I was able to do a good lap in qualifying but this car has way too much power and not enough brakes for my smaller and more technical track. Car #11 found some grip during the race that it didn't have for the qualification. Car #1 does not have any traction and feels heavy, despite its wonderful smoothness.
Car #19, despite its awkward guide location, did good in the race because of its speed and smoothness. The drivers were able to manage the guide location. It definitely oversteers but the weight distribution may be OK, it's just the guide location that gives this impression.
It's a bunch of wonderful cars to look at. Everybody did a great job!
Regarding the voltage, I can assure everyone that 10.25 volts on my track feels like 12-13 volts on many tracks. The wiring was done by the best guy in the business (Steve Sawtelle from Slot Car Corner) and every volt from the power supply goes to the cars, without any loss in transit. Since it's a relatively small and technical track, 10.25 volts is plenty to handle.
Post by David Mitcham on Sept 24, 2017 9:20:23 GMT -5
Many thanks for posting the results so promptly. Congratulations to the podium three. The unpredictability is most intriguing although I fear Chris Amon and his 312 have settled into their consistent finishing position for the rest of the series. I'd welcome any feedback on why you think the car is unstable in the corners.
At least 'Team Policar' did much better overall in the race than in qualifying.