Insane Hydraulics Guestbook

Submitted by
Name: Joseph Ebersole
From: Ohio, USA
E-mail: Contact

Comments:
Thanks so much, Sergiy, for sharing what you've learned. I've come back numerous times to the calculators and helpful practical tips on common problems. I can understand the lack of time to maintain this, but keep it up as you are able - it is much appreciated! As a hydraulic shop mechanic/owner, I would be disappointed to lose access to all this info.

Added: April 29, 2026

Submitted by
Name: Klaus
From: Germany
E-mail: Contact

Comments:
Hello Sergiy,

Just in December I Have found this brilliant website, actually ChatGPT showed me your Interactive Nomogram.

Anyway, I was able to learn a lot and unfortunately late to the Show apparently, Thanks for putting all this great stuff here and also for keeping the site up!

Perhaps there is a more modern(which by no means is equal to better) Way to distribute your Knowledge and Stories.

Either Way, I am recently diving into Hydraulics a lot, learning as much as I can from fixing our obsolete old Machines. Funnily enough since I started looking Into Hydraulics more, all the Hydraulic Stuff is constantly Breaking. Loaders A4V56DA had no more boost pressure, Tractor spat oil from the Aux. Control Valves, Small loader got Rubber in the Priority Valve, Cylinders leaking. ...
And Each time I have a new problem Icome here and checkout if you got something covering the Topic, Thanks again!

Added: April 15, 2026

Submitted by
Name: Lucas
From: Poland
E-mail: Contact

Comments:
Thank You Sergiy, for Yor work and passion/

Added: April 5, 2026

Submitted by
Name: justin
From: everywhere
E-mail: Contact

Comments:
website from the when the internet was still useful. best discussion of all things hydraulics, especially given that so little written down on these systems anywhere else. hope to see the site continue

Added: February 24, 2026

Submitted by
Name: Keegan F.
From: Milwaukee
E-mail: Contact

Comments:
In the dead internet era, where every article is written by AI and usually incorrect, this website is a beacon of sanity. Keep up the great work.

Added: January 27, 2026

Submitted by
Name: DirtFarmer

Comments:
Thank you for the posts, extremely useful blog for solving some of the complications we are finding.

Added: January 16, 2026

Submitted by
Name: soren Pilgaard
From: denmark
E-mail: Contact

Comments:
I am looking for information system By John Deere ( Bosch Rexroth ) 85 cm3 pump .. there is a system to reduce noise på 8 db. and reduce pressure peaks .. PCV it is a chamber inside pump connected to port P like but JD Also tells that there is a small amount of oilflow from P to T.

Added: January 11, 2026

Submitted by
Name: Khurshed irani
From: India
E-mail: Contact

Comments:
Wishing you and your family a very happy new year. Thank you for your detail posts. Have a great year ahead.

Added: January 7, 2026

Submitted by
Name: Jeremy Myer
From: Georgia, United States
E-mail: Contact

Comments:
Thank-you Sergiy for excellent blog posts that address real issues that we as hydraulic techs face. I get so TIRED of reading engineering pie-in-the-sky in fluid power trade magazines, or how to integrate AI into designs. I suppose these topics are important and somebody gets inspiration from them, but your blogs are refreshingly practical and instructive. Thanks again and keep up the good work!

Added: December 29, 2025

Submitted by
Name: Dave
From: Australia
E-mail: Contact

Comments:
In the Google desert this website is an oasis. Thanks so much for helping a brother out, I'll definitely be following the blog and leaving a tip
Dave

Added: November 12, 2025