My name is Don Herholdt and I service and offer consulting and trouble shooting to the engineering community. Mostly in the performance automotive fields and the standby generation industry.

I have over 40 years of practical experience in all fields of engineering from instrumentation to gas turbine and diesel generating sets, racing engine engineering and modifications.

The main service offering that are available at the moment are

however I am open to all interesting engineering projects.

Contact details

I am based in Benoni on the East Rand (now Ekhuruleni district) of Gauteng province, South Africa (about 30 km east of Johannesburg). This is about 15 km from the Johannesburg International Airport (was Jan Smuts International, now O.R. Tambo International) and will gladly travel on consulting jobs.

You can call me at reasonable hours on 072-249-7311 or internationally on +27 72 2497311.

If you are not in such a hurry you can contact me by email by sending a message to Donald at this domain with a meaningful subject line.