My experience with the Jet-Tech software. Poryadok regulirovki klapanov dvigatelj perkins 1104. By Alan Rees-Reynolds I have had the pleasure of testing for some time now. I did intend to do a back to back comparison of the other jetting products available but I met with some reluctance from the other software vendors. You may draw your own conclusions as to the reason for that by the time you reach the end of my article but I will say that I have tested the others so I do have knowledge of them, I just haven’t included them in the review.
This app provides, using weather conditions and your engine configuration, a recommendation about jetting and spark plug to use for karts with Rotax Max EVO (Senior, Minimax, Micromax, Supermax.
The first thing you realise when talking to John is that he is passionate about his product. I deal with students with learning difficulties so I like products to be fool proof, so that if I try and be as awkward as possible with something and it still works, then practically anyone can use it. Jet-Tech is such a product. There are helpful notes available on screen to guide you through the various stages towards obtaining the correct settings on your carburettor.
If all else fails, you can rely on John to talk you through calmly and easily over the telephone or by E-mail. Included with the basic product is a section for the setting up of different carburettors other than the Dellorto, so whether you have a Tillotson or a Walbro or something else on your engine, help is at hand. Also included is information on gear ratios and conversion tables for fluids etc.; also included is a section on tyre temperature analysis. A section for recording your chassis setup and weight distribution is another aid for the karter that is included. My only small criticism with the help files is that you cannot print them out and refer to them as you negotiate your way around the screens, but it is a minor point and it can be got around if you know how. However there is a built-in notes feature which allows you to make you’re your notes / testing diary at the track which you can print out on your return home.
Much of the information you would need at the track can be found on the CD. How the software works. The most essential thing you need to go with the software is a weather station that has barometric pressure and humidity include in its functions. These are available from or from the Internet.
Once you have set up and calibrated your weather station for your height above sea level your weather station data is ready to be entered into the software. This gives you a starting point for jet size and needle settings. The thing to remember is that no software can give you the absolute correct information instantly. Engines vary and carburettors vary, so to arrive at the ideal setting, you have to work a little bit. It is this work that suddenly makes the penny drop and you understand what you are doing and more importantly, WHY.