STC Spreewaldring June practice RS660 2026
Aprilia RS660, Track Days, Body Position, Ergonomics
I went to Spreewaldring without the goal of going faster. The goal was to feel the corner entry and stop fighting the bike with my body.
No speed display, no lap times, no real-time feedback. Just the bike, the track, and whatever my body could learn on its own. The only variable I deliberately adjusted was tire pressure — correcting it based on surface temperature at the end of each session. Everything else had to come from feel.
Neither corner entry speed nor body position can be read off a screen. You either feel them or you don't.
And in just a few sessions, the lap time dropped by 4.6 seconds compared to the 2025 best.
Summary
The first session revealed an ergonomic problem: the rear brake lever and shifter were out of reach when sitting fully back on the seat. Both were adjusted after session one.
From the first corner after the change, movement on the bike became natural — the correct body position was no longer blocked by hardware.
Better position unlocked confidence at lean: knee on the ground in all right-handers, consistent across the sessions.
Throttle application out of the apex became more aggressive as a direct result of establishing the correct weight distribution early in the corner.
This was the first track day in two years where I fully enjoyed the process, and results came on their own.
Key findings
Warm-up session findings
Cloudy, +19C to +21C, wind gusts
The first session was at noon. The track was still drying after light showers.
Three goals going in: maintain correct body position — all the way back in the seat — full focus on corner entry, no dash feedback.
From the very first warm-up lap, it was immediately clear how critical the seat position was. By the second corner, the knee was on the ground. At that point, I knew I was ready to reduce ATC intervention — the confidence was already there.
RS660 STC warm-up
Practice sessions
After three sessions, I found my consistent pace but decided not to rush the straights to make a new position and corner-entry routine a habit. I deliberately braked less aggressively to be less overwhelmed, to trail-brake deeper into the corners.
I adjusted the tire pressure to match the pace, keeping the tire temperature below 55-60 degrees C, and set my fastest lap at STC. Without going hard on the throttle or brakes, I managed to cut the lap time by 4.6 seconds compared with my 2025 best lap.
As the plot above shows, I was barely using the throttle on my fastest lap. Only on the main straight was I at full throttle to make it easier to follow the selected braking point.
After understanding the bike's potential, I decided to simulate the ideal lap, taking into account my custom gearing and G-G tire capabilities. Simulated data is displayed with purple dashed lines, and the lap time is only 1:36.72 seconds, which is 16 seconds faster. To achieve that, I will need to master the racing line, have no traffic, and switch off the fear. The fear is the integral of the area between the red and dashed purple line.
Next Track Day Priorities
Motorcycle setup:
Pitch chassis forward — target 80% front suspension travel at hard braking
Install a short-stroke throttle grip to improve ergonomics
Piloting:
Learn the STC line
Make a new body position a habit
Explore lower ATC levels (below level 4)
Add 100% throttle at every straight segment