Team Details

Scuderia Mensa HS RheinMain Racing

University	Hochschule RheinMain DE Wiesbaden UAS short 71
Location	Wiesbaden, Germany
Homepage	https://www.scuderia-mensa.de/
Social Media
CV Team	Scuderia Mensa HS RheinMain Racing
Short Link	tid.fsg.one/349
Event Details	car 165 - withdrawn

Team Description

The Scuderia Mensa HS RheinMain e.V. is the Formula Student racing team of the University of Applied Sciences Wiesbaden and Rüsselsheim (Hochschule RheinMain). Although the majority of the team consists of engineering students, members from a wide range of faculties contribute to the project, resulting in a nearly constant workforce of approximately forty students.

Since 2006, the team has been participating in Formula Student events across Europe. The first car, SPR08, was a combustion-powered vehicle that competed at Hockenheim in 2008. This marked the beginning of a tradition in which a new and improved car was developed each year. From 2008 to 2010, Scuderia Mensa built combustion vehicles. For the following five years (2011–2015), the team focused on electric race cars before returning once more to combustion engines.

In 2019, the decision was made that the SPR19 would be the final combustion-powered vehicle of Scuderia Mensa, marking the definitive start of the electric era. The first all-wheel-driven electric car, SPR21evo, exceeded expectations by not only achieving rule compliance but also successfully completing its first dynamic events. With the SPR23evo, the team took the next major step by demonstrating reliability through the completion of multiple endurance events.

The team’s latest car, the SPR25e, represents the culmination of years of continuous development. It is a fully rule-compliant, reliable, and high-performance race car, achieving a major milestone by completing the acceleration event in under four seconds. This success reflects the team’s technical expertise and ongoing commitment to pushing the limits of performance and innovation.

Past Events

2024

Car #65

Info

103x

The Scuderia Mensa HS RheinMain Racing Team is proud to present their fourteenth Formula Student car, the SPR23evo. After the successful switch to an AWD electric drivetrain on our last car, we are now focusing on reliability with the second car of our three car plan. A lot of work went into the new generation of our accumulator, consisting of pouch cells and a completely new designed wheel package. The team consists of 30 students from various courses of studies from Rüsselsheim and Wiesbaden.

Engineering Design Priorities:

Reliability Maintainability Manufacturability Platform Understanding Reusability becauseracecar

Car Specifications

General

Frame Construction	Monocoque sandwich structure with square alu roll bar and inlays
Material	Aluminum Honeycomb, Rohacell Foam, Aluminum Inserts, Steel Inserts, UD/TW Carbon Fiber
Overall L	2880 mm
Overall W	1435 mm
Overall H	1160 mm
Wheelbase	1530 mm
Track (Fr)	1225 mm
Track (Rr)	1225 mm
Weight with 68kg driver (Fr)	137 kg
Weight with 68kg driver (Rr)	155 kg
Suspension	Double unequal length A-Arm. Push rod with ARB
Tyres (Fr / Rr)	16.0x7.5-10 R20 Hoosier
Wheels (Fr / Rr)	7 inch, self developed, machined EN AW-6082, 35 mm offset
Drive Type	Planetary Gear
Differential	n/a
Cooling	Two seperate cooling circuits for the motors and the inverter. Each with a 1200cc radiator
Brake System	4-Disc system, self developed rotors, adjustable brake balance, AP Racing calipers
Electronics	Self developed AMS & Vehicle Control Unit

Powertrain

Number of Motors	4
Motor Location	Wheel hub motors
Max Motor Power (per motor)	35 kW per Motor kW
Motor Type	AMK DD5-14-10-POW/ PM synchronous
Max Motor RPM (highest)	20000 rpm
Motor Controller	AMK KW26-S5-FSE-4Q
Max System Voltage	600V V
Electrode Materials	Lithium-Polymer
Combined Accumulator Capacity	7,86 kWh kWh
Transmission Ratio (Primary)	1:10,47 : 1
Transmission Ratio (Secondary)	n/a : 1

2022

Car #65

Info

30x

The Scuderia Mensa HS RheinMain Racing Team is proud to present their thirtheenth Formula Student car, SPR21e. After four years of building combustion driven cars, we are back to electric propulsion - with the first four-wheel-driven car in the teams' history. We are especially proud of our self-developed Accumulator Management System and Vehicle Control Unit. The team consists of 35 students from various courses of studies, which are looking forward to come to Hockenheim.

Engineering Design Priorities:

scrutineering reliable grip lightweight pretty becauseracecar

Car Specifications

General

Frame Construction	Single-piece CFRP Sandwich Monocoque
Material	Carbon Fibre Prepreg (Woven & UD IMS65), Aluminium Honeycomb and Inserts
Overall L	2850 mm
Overall W	1435 mm
Overall H	1160 mm
Wheelbase	1530 mm
Track (Fr)	1225 mm
Track (Rr)	1225 mm
Weight with 68kg driver (Fr)	132 kg
Weight with 68kg driver (Rr)	161 kg
Suspension	Double unequal length A-Arm. Push Rod with front and rear ARB
Tyres (Fr / Rr)	16.0x7.5-10, Hoosier / 16.0x7.5-10, Hoosier
Wheels (Fr / Rr)	7
Drive Type	Planetary Gearbox
Cooling	Twin side pod mounted radiators and seperate cooling systems for motors and inverter
Brake System	4-Disk system, self developed rotors
Electronics	self developed AMS & Vehicle Control Unit

Powertrain

Number of Motors	4
Motor Location	wheel hub mounted
Max Motor Power (per motor)	35 kW kW
Motor Type	AMK DD5-14-10-POW
Max Motor RPM (highest)	20.000 rpm
Motor Controller	AMK KW26-S5-FSE-4Q
Max System Voltage	600V V
Electrode Materials	Li-Ion
Combined Accumulator Capacity	7.78 kWh kWh
Transmission Ratio (Primary)	1:11.71 : 1

2015

Car #55

Info

5x

Scuderia Mensa, team of 35 students at the UAS Rhein Main is presenting their 8th racecar, the SPR15E. A new aerodynamic package, magnesium rims and the advanced 3rd generation planetary gear are only some of our developments this season. Events in Germany, Spain and Czech Republic encourage our appearance and form the season to an unforgettable time of hard work, processing and success. The progress is every year more voluminous, more effective and more intensive. This is formula student!

Car Specifications

General

Frame Construction	Steel Spaceframe
Material	S235JR G2 and E355 steel round tubing
Overall L	2910 mm
Overall W	1430 mm
Overall H	1148 mm
Wheelbase	1575 mm
Track (Fr)	1218 mm
Track (Rr)	1181 mm
Weight with 68kg driver (Fr)	115 kg
Weight with 68kg driver (Rr)	185 kg
Suspension	Double unequal length A-Arm. Push rod actuated almost horizontally oriented spring and damper.
Tyres (Fr / Rr)	20.5x7.0-13 R25B C2500 Hoosier
Wheels (Fr / Rr)	20.5x7.0-13 R25B C2500 Hoosier
Drive Type	Electric motor with a selfmade Planetery
Differential	Drexler formula student differential
Cooling	Rear mounted, continuously bled by swirlpot, air tunnel, no electric fan
Brake System	4-Disk system, self developed rotors with 220mm diameter, adj. brake balance, BREMBO calipers
Electronics	Live Telemetry via Wlan or UMTS, Traction control, Dashboard with remaining range

Powertrain

Number of Motors	1
Motor Location	Middle Rear
Max Motor Power (per motor)	100kW kW
Motor Type	YASA 750
Max Motor RPM (highest)	2000 rpm
Motor Controller	Sevcon Evolution 5
Max System Voltage	378 V
Electrode Materials	LiCoO2
Combined Accumulator Capacity	6,6 kWh
Transmission Ratio (Primary)	-1.5:1 : 1
Transmission Ratio (Secondary)	n/a : 1

2014

Car #65

Info

17x

This is the 7th year we compete in Hockenheim in a row. Our goal for 2014 is to build a racecar with competitive driving dynamics and a strong motor. A big focus was set on reliability when designing every part of the racecar. The suspension of the SPR14E features a completely new design of all major parts. Our all-new telemetry allows to monitor the whole racecar in detail whenever it is needed. This is the third year in a row where a self-developed battery pack and BMS is used.

Engineering Design Priorities:

Reliability Driving dynamics Development

Car Specifications

General

Frame Construction	Steel Spaceframe
Material	S235JR G2
Overall L	2710 mm
Overall W	1442 mm
Overall H	1157 mm
Wheelbase	1312 mm
Track (Fr)	1218 mm
Track (Rr)	1181 mm
Weight with 68kg driver (Fr)	146 kg
Weight with 68kg driver (Rr)	146 kg
Suspension	Double unequal length A-Arm. Push rod actuated horizontally oriented spring and damper.
Tyres (Fr / Rr)	20.5x7.0-13 R25B C2500 Hoosier
Wheels (Fr / Rr)	7x13, 28mm neg. offs, 1 pc Al Rim
Drive Type	Electric motor with a selfmade Gear
Differential	Drexler formula student differential
Cooling	Rear mounted, continuously bled by swirlpot, air tunnel, no electric fan
Brake System	4-Disk system, self developed rotors with 220mm diameter, adj. brake balance, BREMBO calipers
Electronics	Live Telemetry via Wlan or UMTS, Traction control, Dashboard with remaining range

Powertrain

Number of Motors	1
Motor Location	Middle Rear
Max Motor Power (per motor)	100kW kW
Motor Type	YASA 750
Max Motor RPM (highest)	2000 rpm
Motor Controller	Sevcon Evolution 5
Max System Voltage	403V V
Electrode Materials	LiPo
Combined Accumulator Capacity	5,63kWh kWh
Transmission Ratio (Primary)	1.44:1 : 1
Transmission Ratio (Secondary)	N/A : 1

2013

Car #104

Info

18x

You know us! We are the team with the yellow racing cars! With the experience of the past two seasons of building electric race cars, we start into the new season. Powered by a brushless DC engine, the SPR13E features programmable and adapted power electrics. The multi-disc, self-locking, differential causes reduced revolutions per minute and an increased maximum torque up to 1100 Nm. The battery and the battery management system are both self-developed. Double wishbone suspension made of stainless steel. The dampers are actuated by pushrods. Complete re-design of uprights and wheel hubs. Tyre and rim data are better used for simulation purposes as well as final suspension setup. Increased use of carbon fiber parts. FE-analysis of entire frame. TiG-welded space frame made of E355. Weight loss of 10 kg. Better center of gravity by centering battery packs. Our first lightweight aeropack will gives us as much downforce as possible while not adding too much drag.

Car Specifications

General

Frame Construction	Steel Spaceframe
Material	S355JR
Overall L	3018 mm
Overall W	1422 mm
Overall H	1080 mm
Wheelbase	1575 mm
Track (Fr)	1219 mm
Track (Rr)	1181 mm
Weight with 68kg driver (Fr)	115 kg
Weight with 68kg driver (Rr)	200 kg
Suspension	Double unequal length A-Arm. Pull rod actuated almost horizontally oriented spring and damper
Tyres (Fr / Rr)	20.5x7.0-13 R25B C2500 Hoosier
Wheels (Fr / Rr)	20.5x7.0-13 R25B C2500 Hoosier
Drive Type	Electric motor with a planetary gear
Differential	Drexler formula student differential
Cooling	One radiator mounted on the left side of the car with air tunnel integrated under the body.
Brake System	4-Disk system, self developed rotors with 232mm and 220mm diameter, adjustable brake balance
Electronics	self designed accumulator and BMS as well as HMI, wiring harness sealed to IP66 easily removable

Powertrain

Number of Motors	1
Motor Location	Rear, middle
Max Motor Power (per motor)	100 kW kW
Motor Type	YASA 750
Max Motor RPM (highest)	2000 rpm
Motor Controller	Sevcon Evolution 5
Max System Voltage	345V V
Electrode Materials	LiFePo4
Combined Accumulator Capacity	6,9 kWh kWh
Transmission Ratio (Primary)	1:1,44 : 1
Transmission Ratio (Secondary)	N/A : 1

2012

Car #65

Info

You have a Déjá-vu? Maybe it is because the Scuderia Mensa HS RheinMain Racing Team now participates for its fifth season at the FSG Events and grows in members and experiences every year. The mix of a rising competence in engineering design and marketing activities leads to more confidence from our supporters. After three seasons of gasoline powered cars you might remember the yellow flash from Ruesselsheim with the 65. Those days have been noisy! Since 2011 Racing became quite silent in the RheinMain area. An electric powertrain concept gave the opportunity to the students to learn today what will fulfill their future. With state of the art technique the SPR11E has been a bench to figure out how systems like those have to be engineered. This year’s SPR12E will be more than 100 kg lighter, even more reliable, comfortable and better in performance with active differential (torque vectoring) and traction control. Most of these systems are primarily self-made designed by the team.

Car Specifications

General

Frame Construction	Tubed Frame
Material	E 355 in different thicknesses
Drive Type	Direct Drive via CFK Drive Shafts
Differential	Active Differential controlled via steering sensor
Cooling	Liquid oil cooling cicuit with
Brake System	self designed 4-Disk system with XY mm diameter, adjustable brake balance, brembo 4-calipers
Electronics	self designed accumulator and BMS as well as HMI, wiring harness sealed to IP66 easily removable

Powertrain

Number of Motors	2
Motor Location	Rear Left & Rear Right
Max Motor Power (per motor)	100 kW kW
Motor Type	YASA-750
Max Motor RPM (highest)	2000 rpm
Motor Controller	dSpace MABX II
Max System Voltage	353V V
Electrode Materials	Li-Polymer
Combined Accumulator Capacity	7,5kW kWh
Transmission Ratio (Primary)	1:1 : 1
Transmission Ratio (Secondary)	1:1 : 1

2011

Car #65

Info

After developing three combustion cars – SPR08 to SPR10 – and successful participations in Hockenheim, Austria and Italy last year the Scuderia Mensa of HS RheinMain Racing will get part in the new electric class of Formula Student in its fifth year after foundation. The new SPR11e bases on the experiences we gained during manufacturing our combustions. Last year’s proven parts were optimized and adapted to the new requirements the electric drives has brought with it. Besides some changes e.g. on the body-kit and improvements concerning the chassis, the development of the electric tractive system and drivetrain has been mastered by a team of Designer, Electric, Economic and Mechanical Engineering Students in collaboration with our sponsors. Our goal is to build a car that has at least the same performance, reliability, safety and ergonometric qualities as the SPR10. Therefore we worked hard and will participate successfully at the Hockenheimring and in Turin (ITA) this year.

Car Specifications

General

Frame Construction	Space frame
Material	E235/E355 steel round tubing/ 14mm to 25mm outer diameter
Overall L	2635 mm
Overall W	1433 mm
Overall H	1112 mm
Wheelbase	1650 mm
Track (Fr)	1230 mm
Track (Rr)	1180 mm
Weight with 68kg driver (Fr)	158 kg
Weight with 68kg driver (Rr)	237 kg
Suspension	Double unequal length A-Arm. Push rod actuated spring and damper.
Tyres (Fr / Rr)	20.5x7.0 R13 Hoosier R25B
Wheels (Fr / Rr)	7x13, -28mm offset, 1 pc Al Rim
Drive Type	Chain
Differential	Electrical Differential
Cooling	twin side pod mounted Mini radiators with thermostatic controlled electric fans
Brake System	Floating supported rotors with 220mm diameter, adjustable brake balance, 4 piston calipers
Electronics	wiring harness sealed to IP67, Live-Telemetry System

Powertrain

Number of Motors	2
Motor Location	Rear Right, Rear Left
Max Motor Power (per motor)	65kW , 65kW kW
Motor Type	RR , RL : Sineton Perm Synchronous Motor
Max Motor RPM (highest)	RR , RL : 3.000 rpm
Motor Controller	modified Actua
Max System Voltage	350V V
Electrode Materials	Li(NiCoMn)O2
Combined Accumulator Capacity	10,85kWh kWh
Transmission Ratio (Primary)	1:1,95 : 1
Transmission Ratio (Secondary)	-