Cars & Motorcycle (4)

Julien ARNAUD

MX-30 lowered with 19" rims

I quite like my MX-30 but the rims and the ride height always seemed off. Using H&R springs (-35mm front, -40mm rear) and Borbet "V" rims, the result is most satisfying. I carefully researched tires, as I was forced to go from 215 to 225 width and didn't want to sacrifice too much range to that. It is after all, a tiny 32kWh battery ! Turns out Goodyear Eagle F1 Asymmetric 5 in 225/45/19 have better rolling resistance (A) than stock Bridgetone T005A tires in 215/55/18 (B) without sacrificing on…

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Julien ARNAUD

Twizy 2.2 DSP corrected sound system with 3D printed subwoofer

I designed a soundsystem for my Renault Twizy around the following elements Subwoofer The subwoofer enclosure was designed to fit in the narrow space behind the passenger seat. This gave the subwoofer a kind of rounded/organic shape. From this shape I got an internal air volume. I looked for speakers that would work in such a small volume and still produce the desired level of bass (I aimed for around 45Hz -3dB). The software popped out a 6.5" Audax with dual coils. The simulation has some compromises though, at full…

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Julien ARNAUD

Motion simracing rig

Components Intel i7 7700K 16 GB DDR4 512 GB NVMe 2x nvidia GTX 1080 in SLI 750 W Corsair PSU 3x 43" 4K TVs (11520 x 2160 px) ProSimu T1000 2DOF Fanatec Clubsport 2.5 Wheel base ClubSport Wheel Rim SPARCO┬« Rally ClubSport Porsche 918 Wheel ClubSport Steering Wheel F1┬« Esports V2 Fanatec Clubsport V3 Pedals Fanatec ClubSport Shifter SQ V 1.5 4.0 audio using 2x 8" Samson Resolv A8 active monitors (front) 2x 6" Samson Resolv A6 active monitors (rear) The whole system draws about 460W idle, and around 700W…

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