- Nascar heat 4 setups spreadsheet how to#
- Nascar heat 4 setups spreadsheet driver#
- Nascar heat 4 setups spreadsheet series#
You will see how I am using the Solver function, combined with some automated trend-line functions to be able to automate the gear selection process. It plays pretty well in 1.5x speed and I’ve done the subtitles in case sound is an issue where you are watching. If you are keen to take the next step with choosing the best gear ratios for your own racing car, I strongly suggest you grab a coffee and watch the video walkthrough for the spreadsheet. You have seen that it is possible to use the maths and formulas to optimise your gear ratios but, for such a simple question, it quickly gets fairly involved – as you will no doubt have discovered!Ī quick reminder that our newsletter subscribers get my spreadsheet on this at 25% discount. In summary, choosing the best gear ratios is some theory, some maths and also some practical tweaks to make sure you end up with a sensible set of gear ratios and final drive ratio for any given track in any given car.
Nascar heat 4 setups spreadsheet driver#
The velocity profile you can get in a real racing car from the data logger or you try get your driver to remember the speed (or RPM) figures coming on too, and at the end of, each straight.įinal Thought on Choosing The Best Gear Ratios Therefore, what you can do is plot a velocity profile of the track you are trying to optimise for, on the tractive force chart. You know at what RPM to change between each gear but it is not good if you need to make a mid-corner gear change or an up change just as you are coming into a braking zone. 3 – Positional Timing of Gear Changesįinally another thing to consider is the timing of your gear changes. Once you are up to speed and doing laps, a more optimum gear ratio stack might be one with slightly longer lower gears that enables you to stay closer to the tractive force limit, at those higher speeds, more often than a more “standard” gear ratio set. 2- Minimum Corner SpeedsĮqually, it might be that the track has mainly fast corners with very few slow ones. What you can do in that situation is instead of optimising your gear ratios to hit the cars theoretical Vmax, you can shorten them a bit so you are instead aiming at hitting your peak power in top gear at the Vmax for the track instead. There are 3 things to consider here: 1- Length of Straights
🙂 If you can change the gear ratios you have the opportunity to run an optimum setup for best performance.īut how do you choose these optimum ratios?įollow those rules and it will give you a great setup for a drag race but will not necessarily be optimised for your specific race track.įor example, you might have a track where the straights are never going to be long enough for you to reach Vmax. One you now need to find!! – as if you are not running the optimum, then you are giving away performance unnecessarily.įlipping that into a positive. If you can change the ratios (and/or the final drive ratio) then there will be an optimum setting for your racing car for each track. When you have freedom in choosing the best gear ratios it can actually become something of a mixed blessing! These restrictions, whilst a pain in terms of pure performance, do have the beneficial effect of often making your gear ratios selections one fewer thing to worry about!
Nascar heat 4 setups spreadsheet series#
These are either specified by the series you race in or by the gearbox design. With real racing cars (verse simulators) there are always limits on the ratios you can choose. But that is only for those specific gear ratios.
Nascar heat 4 setups spreadsheet how to#
Alternatively, you can dive straight into the big time.You already know how to determine your best gear change RPM for each gear 😎 (no? – seriously have a read because this article builds on that one) And, as you are already shifting gears at the best possible RPM points, you will already be getting the best possible acceleration. Work your way to the top, starting in the Xtreme Dirt Series and moving through the Gander RV & Outdoor Truck and Xfinity Series before you reach the pinnacle – the NASCAR Cup Series. Test your car setup & make the proper adjustments ahead of time to increase your chances of winning during the official races where it counts!
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