Kensington TB675 - Same fate as TB800.
Hello folks,
out of curiosity, I unpacked the brand new TB675 thinking I would swap the stock bearings to G5 silicon nitride ones. Hovewer, before that I plugged it once more just to test the movement on stock bearing once more, lo and behold - if you use the rightside portion of the ball for any rotation, then that movement is almost dead, like the cursor wont move as it should, it moves in erratic way and in very small direction, no matter how you would try to spin the ball on that rightside of the ball - it is completely random movement in small directions. If you put the thumb on exact top center of the ball, or on its left side, then the cursor moves as it should.
I suspect it is because the dreaded offset of its sensor, very close to the side , next to the one of its bearings. In comparision, Elecom IST PRO has its sensor on exact bottom center and the bearings are aligned precisely as on the perimiter of the ball. Plus no matter where your thumb is, the cursor moves exactly as it should. So, stay away from TB675 if you move your thumb to the right side of the ball often (I do.) It is damn shame, that Kensington cant put their bussiness in order - for such a mark, I would not expect **mediocre** flawed hardware, just to be put in one of the best ergonomic shaped trackball casing.
Included phots for reference of the dead rightside.