The search for answers

Where to begin ?

Safety testing for cars is a European approach. Common rules exist in all countries, the execution of testing is as far as possible equal. Since we envisage the suspension of Citroën A-types we would like to be informed of the situation in your country.

We can explain here the way we followed in one region with its own government of a small country.

We highlight the relevance of the results obtained so far.

1- The CEO of the Association of historical vehicles was informed by sending him the report of he bachelors. He could arrange a meeting with the private company representatives executing the safety testing of cars in licence from the government.

3- The meeting with the private testing company representative, the CEO and the blog owner present, revealed the following :

– In the preparation of the dynamic testing of suspensions of cars late 1990, many different cars where investigated to check the relevance of the test and to set a  workable limit to define the safety aspect.

– Whether A-types where taken as a sample could not be confirmed.

– The chairmen of the meeting stated that maybe for the A-types the starting frequency of 24,5 Hz is too high.

Note : a high frequency is relevant to simulate driving over cobblestones.

The A-type suspension is known to have difficulties to coop with driving “normally” over cobblestones. In relation to the test this explains also why flattening the tyres is the way forward. See the comparison with the cycling in Paris-Roubaix and the lower pressure in the race tyres.

– It was also clarified that maybe very stiff race shock absorbers could help to meet the limit.

Note : a test later in a testing station revealed that the race absorber, even in its            lowest damping position is too stiff and such that the car came loose from the test            bench. The race absorber is not aligned with the low weight of the car, however            driving the car with them installed comes close to driving a modern car.

4- Further information given to the private testing company allowed for a second meeting. The responsible person of the relevant administration of the ministry of mobility was present via a video link.

The outcome, afterwards notified by a phone call, was that the private company was not able to assist in informing the administration what would be the best outcome. Probably further investigation by them would be necessary.

5- A phone call with the responsible person of the administration made clear that the issue was understood. The matter would be discussed internally to find the best outcome.

6- Some months later, an overview of most aspects of the testing by the private company of a deriveative car (lowered suspension) was send to the administration highlighted above.

7- A mail was sent by the administration to the blog owner stating that they acknowledge to have received all necessary information to start an internal evaluation of the matter reported. They envisage an update of the technical test prescriptions, but state that it will not be handled as a priority.

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