Gemma Hatton

@dr_obbs @bernie_collins1 @RacecarEngineer I’m so glad you like those articles! I realised there was little info out there that actually explains the mechanics of grip so I thought I’d write my own! 😁

Lots of talk about tyres lately and I love it! I'm sure that @bernie_collins1 who be thrilled with all the tyre chat. I always enjoyed this series from @Gem_Tech in @RacecarEngineer on tyre rubber, and grip. Links below ⬇️ Pay attention to how the rubber modulus changes with temperature. The increased surface temperature of the tyre from pushing too early without high-frequency loading causing hysteretic heating of the bulk rubber is to be avoided. This is why race engineers ask their drivers to "bring the tyre in" during a tyre change. racecar-engineering.com/tech-explained… This article on tyre grip is really great as well. The differences in indentation and molecular grip can be complex, but easy enough to understand in this article. Make the connection between the "how rubber works" figure showing the glass transition temperature and the explanation of the two forms of grip. This is why cold tyres have less grip. racecar-engineering.com/tech-explained… In my opinion, it's so much better to watch races and follow along when you understand a bit more of the "why" things are happening. Enjoy these two reads!

In this piece, I explain: ➡️ How e-motor dynos work ➡️ Permanent magnet motors ➡️ PWM switching frequencies ➡️ Silicon carbide inverters ➡️ Battery emulators ➡️ Typical test programmes ➡️ Latest F1 testing strategies To subscribe to @RaceEngineTech ➡️ highpowermedia.com/Products/all-s…

The most difficult piece I have written in a while, but I learnt so much on EV powertrain testing!💡 Huge thanks to the companies who helped me with this piece 🙏 A sneak preview below ⬇️ The full article is in the latest issue of @RaceEngineTech ➡️ highpowermedia.com/Product/all-is…

@CallumJCParr @mattpt55 Haha! I feel like I’m a bit out of the loop with the whole F1 scene at the moment so not sure I could add much value but I think I still have my mic somewhere! 😅

When I was in F1, one of the tyre blankets was removed too early so the car left the garage with one tyre a few degrees cooler. This never got up to temperature throughout the stint 🥶 F1 tyres are so sensitive, one degree can significantly affect performance 🌡️

@Lew15H Yeh I actually wrote an article for @RacecarEngineer on the difference between road/street courses and ovals with that pit lane closed rule - was so interesting!

@Gem_Tech In Indy, overcut is a bit more powerful due to refueling. However, the saftey car rules also means the pitlane is closed so if you do try and overcut you run a risk of losing many positions if someone does crash, an early undercut can also gain you tons due to this.

@momedic9019 Ah I see - thanks. It’s difficult to get IndyCar in the UK! So do they mostly overcut rather than undercut because of the slower warm up on new tyres?

@Gem_Tech IndyCar has never had tire warmers, just like NASCAR, they spread them out in the sun to try and gain as much heat at possible

Engineers have a crucial role in innovating technologies that can help us be more efficient with the world's resources, time & money 🌍 If you know anyone who is interested in engineering, whatever their gender, race or background then spread the word - engineering is awesome

Happy International Women in Engineering day! ⚙️ 🎉 Hi five ✋ to all the incredible female engineers I have met throughout my career - you are inspirational so this is an appreciation post for you 🙏 #inwed23 #engineering #stem

Engineering is not just a subject, it's a way of thinking and approaching problems. It can lead to building racecars, aircraft, rockets or wind turbines 🚀 We need more engineers!

@Rhinopt Haha no wonder what a race it was! I’m a bit out of the loop with endurance racing at the mo, but I switched it on and just couldn’t switch it off!

@Gem_Tech Just about recovered from Le Mans 👍

Hello Twitter 👋 It's been a looooong time since I posted anything - how is everyone's June going? Mine had a wobbly start but the strategy has come good the last week! 😅

@NIO333FormulaE “It’s a bugger this walking stick has a wheel attached to it” “At least you’ve got one…”

@NIO333FormulaE @zoejj73 What a guy 😅

@JennieGow Really sorry to hear this. You are one of the nicest motorsport people I have ever met. Be patient with yourself as you recover, work will always be there. You’ve got this Jennie 💙💙💙

@PhilippePuetzer ✅ only just made my flight!

@Gem_Tech Were you on the way to Cologne?

Can you tell when I was trying to get to Heathrow and the M25 was shut because of protestors? 🥲

For all my @F1 followers - check out @brrrake and watch the race alongside a former F1 trackside engineer! Can't get better insight than from someone who has actually been there and done it! 🏁

@JulianClary Yep - me too! Hi five 👋🏻

I’m still very optimistic about my sweet peas