Another good question, If you like to run a shorter stroke, such as 2mm, simply adjust your tube to allow the needles to barely hang out. There is nothing better than running a 3.5 stroke machine but bringing down the tube to expose either 1.7 or 2.5mm of needle. This way you can have that short stroke that you desire but the ink delivery of a 3.5 stroke machine. trust me this is the absolute better option.
Good question, you can use the 3.5 stroke to do the softest black and grey work well as pack in the most blended and realistic colors. If you like to run a shorter stroke, such as 2mm, simply adjust your tube to allow the needles to barely hang out. The 4.2 Long stroke works best to use as a solid color packer as well as tribal black and designed to do excellent line work as it has more of a stronger hit.
All bishop Rotary® machines work with almost any power supply. The Eikon EMS 250 does not work with rotaries. If you want to use the Eikon EMS 300 then check the menu for a rotary mode and turn it on. If your Eikon EMS 300 does not have a rotary mode on the menu then it will run only for a few seconds. All new Eikons EMS 300 work with rotaries and all other future Eikon models will be rotary compatible.