A series of repeated breakdowns of a hydrostatic transmission gave birth to this article, called "What Drives What".
3 May, 2020
No matter how long I work with hydraulics and how many situations defying common sense in most unbelievable ways I come across - I'll never say "Now I've seen it all!" since there will always be someone willing to challenge the current champion of the "industrial ignorance" race...
My discussion of closed-loop charge-pressure-related stuff would be incomplete without addressing the loop flushing subject, which is, therefore, the prime topic of today's post.
12 April, 2020
Today I want to continue with the topic of charge pressure and talk about the peculiarities of measuring charge pressure in hydrostatic transmissions. And also recall that when you troubleshoot a piece of hydraulic equipment, being able to measure temperature is as important as being able to measure pressure. Did you know that not all technicians know how to use an infrared thermometer correctly?
5 April, 2020
Before adjusting the charge pressure in a closed-loop transmission we must define its value - and that's where doubts may arise. How high should it be? 18 bar? 22? Maybe 28 bar? How about 30? I am discussing this matter in my post on How High Should the Closed Loop Charge Pressure Be?
Another report from the wireless pressure gauge project. The system gets an extra channel, new modular PCB design, new ABS enclosure, and a lot more - Road to the MVP
Last Friday (of course it had to be a Friday) I pulled an all-nighter fixing a very interesting and unexpected problem of this small HAWE PSL size 2 directional control valve. This simple fix raised several extremely important questions, almost turning itself into a "compensated DCV master class". Now, this having been an all-nighter and all - I didn't have time to dish out a "proper" article, and since I believe that it is has to be perfect - I am putting this one off till the next week. For now, however, I am leaving you to wonder how this poor bearing managed to survive a massacre - Parker P2075 Pump - Mashed to Pieces Yet The Bearing Survives!
This time I decided to do things differently, and instead of wring an article - I made a video that demonstrates an interesting and perhaps less common situation that you may run into when adjusting load sensing controls of certain open loop varibale displacement pumps, and at the same time showcases the latest prototypes of the wireless monitoring system that I have been working on for some time now.
5 January, 2020
Starting the new year with a Full Bronze Barrel. A rare sight these days...
