About Me

For a long time, I was convinced that a society’s path toward prosperity, knowledge, and progress would be the obvious, natural one. I chose engineering so that my work could give life meaning and contribute to progress—yet now I find myself in a post-truth world, where scientific consensus seems to matter little when one’s own opinion is so much more convenient.

This bitter reality was described in 1784 by German philosopher Immanuel Kant: “Laziness and cowardice are the reasons why such a large part of humankind, even after nature has long since released them from the guidance of others, nevertheless gladly remain immature for their entire lives – and why it is so easy for others to set themselves up as their leaders. It is comfortable to be immature.”

With the realization that many resources are finite – and that we should leave a world worth living in for future generations as well – I try to live as sustainably as possible. I repair a lot of things, I haven’t made myself dependent on a car in everyday life, and I do everything by bicycle, whenever that’s possible. “But that doesn’t take away my enjoyment of tinkering and repairing.

On this page I publish everything I feel like doing, without commercial purpose. So you can find here some repair instructions and technical background knowledge about a motorcycle as well as information about hydraulic impact tools, an actual RBMK power plant simulator or other things that apparently have nothing to do with each other.

For a long time, I thought about whether and how I want to position myself politically here, but by now I consider a few statements appropriate. I believe it is a crime to live a lifestyle of gluttony and excess at the expense of the generations that follow. “The world has enough for everyone’s need, but not enough for everyone’s greed” (Gandhi). Human rights are humanity’s greatest achievement and the foundation of freedom; nothing is more valuable. The fact that there are individuals and organizations that, directly or indirectly, act against them is a visible step backward into darker times.

Hartrusion

The name was originally „Hard Rock Intrusion Tools“ created for some company ideas with similarities to my name. It was then used for this website because of its uniqueness and has no other meaning.

CV

Latest Blog Entries

Hydraulic Down-The-Hole Hammer Drilling

As I worked some years on the topic, I’m still interested in the development of hydraulic down the hole hammer drills. So I decided to make some pages to share my knowledge here.

What are these tools and what are they used for?

Process

Which innovation lead to the development of thees tools in history?

History

How do the hydraulic-mechanic percussion drives actually work?

Drive Mechanisms

Workshop and Mechanics Corner

Decades ago, this was around 2007, I bought a small Aprilia RS 125 motorcylce and gained some experience in reparing it. I also had a small website (sonic-rs.de) and was elected as moderator in a bulletin board regarding these bikes.

Most of my knowledge, tipps and ideas can be read online on the pages for the RS 125 here.

View Aprilia RS 125 Page
RS 250 Workshop Diary

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