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Montreal is the highest power factors of the season – Cosworth



June.09 – One of the F1 engine suppliers Cosworth have provided their own look at each race weekend with a fact list and table analyzing the circuit from an engine’s perspective.

Engine’s Eye View
Coming off the back of the twisty streets of Monaco, Montreal has one of the highest power factors of the season.

Whilst the effect of power on lap time is not as high as the more traditional engine circuits, particularly Spa and Monza, it is towards the top of end of the remaining tracks, similar to Melbourne, Istanbul and Abu Dhabi.

The 1100m long straight between turns 10 and 13 is one of the longest of the season.

The slow speed exit of the turn 10 hairpin ensures all aspects of the engine’s power curve are fully tested on the run down to the final chicane.

In recent years, a slight change in wind direction has also made the difference between just ‘kissing’ the throttle based soft limiter towards the end of the straight, or sitting in it for extended periods. The latter leaves the driver vulnerable to passing attempts into the final chicane.

Montreal is very tough on brakes, but the large stopping zones provide an ideal opportunity to keep the KERS system fully charged. The track is not used regularly, so ‘rubbers-in’ greatly over the course of the weekend.

From the Race Track
The race starting fuel load will be one of the highest of the season, although this will be governed to a certain extent by race strategy.

Ignoring turn 11, which is a non event, turn 5 is the fastest of the circuit and was generally taken flat in 2010. With the reduction in downforce brought about by this year’s regulation changes, the drivers may have to lift slightly this year.

The rest of the corners are quite slow by comparison. As a result, Montreal is one of the relatively few circuits where teams opt to run less downforce than usual, which increases both braking distances and top speeds. This also helps with overtaking.

Information provided by David Lamb, Cosworth Senior Engineer

Data Analysis

Metric What does this mean? Severity Ranking*
Fuel Consumption How full does the fuel tank need to be on the startline? 5
Lap Power Demand How long is the engine at full power during a single lap? 3
Time Off Throttle (KERS Recharge Opportunity) How much of an opportunity does the track provide for KERS recharging? 4
Total Race Power Demand How hard does the engine work over the total race distance? 3
“Shortness of Breath” How much is the maximum engine power compromised by the atmospheric conditions? 4
Engine Challenge How do all of the factors combine to challenge the engine? 3

* Rating of 1-5 where 1 is the lowest severity and 5 is the highest.

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