Close-up bicycle technology

Films showing the bicycle test laboratory, the Expert’s Report division GDFS – Gesellschaft der Fahrrad-Sachverständigen mbH and Zedler – Institut für Fahrradtechnik und -Sicherheit GmbH.

The Zedler TV films will give you an insight into the work of the bicycle and pedelec experts, the test engineers, the bicycle mechanics and the experts of the technical documentation for bicycles.

SWR – "Marktcheck" checks bike racks

SWR – Marktcheck checks bike racks
SWR - "Marktcheck"

Tuesday, September 22, 2020
Subject of the programme: safety and usability of bike racks for cars. Dirk Zedler provides information and explains where material, construction or operating errors may occur.

SWR – "Marktcheck" checks Decathlon

Bicycle or pedelec
SWR - "Marktcheck"

Tuesday, August 12, 2020
Do you get good quality at a low price or disposable products? Decathlon-bicycles on the testing systems of Zedler-Group. Dirk Zedler evaluates the test results.

Guests of an automotive engineer off the beaten track

Thursday, June 18, 2020
In times of Covid-19/Corona:
Digital company visit of Umweltprofis von morgen (Environmental pros of tomorrow) at the Zedler-Group. Managing Director and founder Dirk Zedler made a guided online tour through the company.

SWR – 90-seconds safety check for your bike

Bicycle or pedelec
SWR - spring check for your bike

Tuesday, May 19, 2020
"Cycling without risk": Dirk Zedler gives tips and tricks on how to make your bike fit for spring.

WDR – Bicycle or pedelec

Bicycle or pedelec
Yvonne Willicks and Dirk Zedler during the shooting

Wednesday, May 6, 2020
What’s the difference between a bicycle and a pedelec and what characterizes a good bike? This question was raised by host Yvonne Willicks in her German TV show "Haushalts-Check".

SWR - Low-priced, useful, good? Bicycles

Tuesday, September 25, 2018,
Tuesday, July 30, 2019,
Tuesday, May 26, 2020
Finding a parking lot everywhere, avoiding the jam – the dream of every car driver has already become true for cyclists. But with which bike do you have most fun?

SWR - With souped-up e-bikes on the fast lane

Dirk Zedler, Sachverständiger für Fahrradtechnik
Come to the point Baden-Wuerttemberg

Thursday, July 5, 2018
Retiree bikes, as if! Around 300,000 souped-up e-bikes are allegedly rolling on Germany’s roads. Sometimes they are caught at speeds of nearly 70 kmh/44 mph. (...)

SWR - Low-priced bicycles at the test

Dirk Zedler, expert for bicycle technology
Dirk Zedler, Sachverständiger für Fahrradtechnik

Tuesday, May 22, 2018
Safety risks due to assembly and quality deficiencies - Low-priced bicycles from Real, Lidl, Decathlon and Otto pose major risks: In parts, the assembly manual is missing,  (...)

NDR - electric bicycles at the test: dangerous deficiencies

Electric bicycles at the test: dangerous deficiencies
Electric bicycles at the test: dangerous deficiencies

Monday, June 26, 2017
Electric bicycles, also referred to as e-bikes or pedelecs, become more and more popular. Cycling is less physically demanding as with a common bicycle.

AzubiTV.de - Two wheeler mechatronic technician

Two wheeler mechatronic technician
AzubiTV.de - Real craft

Thursday, June 16, 2016
On your motorcycle you feel like an "easy rider"? Or do you prefer mountain bikes?

WDR – The bicycle as alternative in the city?

WDR – The bicycle as alternative in the city?
WDR – Household check

Wednesday, May 18, 2016
Especially in the German state North Rhine-Westphalia, number one of congested regions and in a city like Cologne where car drivers spend all in all 65 hours per year in traffic jams, switching to the bicycle could be reasonable. (...)

Kabel 1 – Cheap bicycles tested

Kabel 1 – Cheap bicycles tested
Kabel 1 – Cheap bicycles tested

Wednesday, April 27, 2016
We test cheap bicycles from the discount store - and unveil devastating safety deficiencies! Other topics: (...)

NDR – Cheap bicycles: often poor safety

Cheap bicycles: often poor safety
NDR – Cheap bicycles

Monday, April 18, 2016
By order of the German TV program "Markt" experts examined the bicycles in a laboratory specialized in bicycle technology in Ludwigsburg in accordance with current test standards. (...)

Regio TV – "Hero of the new mobility"

RegioTV - Hero of the new mobility
RegioTV - Hero of the new mobility

Monday, November 16, 2015
Interview with Dirk Zedler

NDR - Safety deficiencies in the case of cheap bicycles

NDR - Safety deficiencies in the case of cheap bicycles
NDR - Safety deficiencies in the case of cheap bicycles

Monday, August 3, 2015
Bicycles are on sale in the DIY store and in the discount store for less than 250 Euro. In most cases the low priced bicycles are preassembled: The buyer needs to mount the pedals, tighten the bolts and bring the handlebar in the correct position. (...)

Prosieben – Path of the bicycle from China

Prosieben – Path of the bicycle from China
Prosieben – Path of the bicycle from China

Monday, July 7, 2014
A bicycle manufactured in Germany costs almost 600 Euro, one made in China around 200 Euro. What’s the reason for this difference in price and what does this mean for the quality? (...)

ARD Plusminus / E-bikes - Threatening safety deficiencies

E-bikes - Threatening safety deficiencies
ARD Plusminus / E-bikes - Threatening safety deficiencies

Monday, July 10, 2013
Bicycles with auxiliary motor - also referred to as e-bikes - enjoy great popularity. Some e-bikes, however, reveal considerable safety deficiencies and are apparently not checked often enough. (...)