Let's See Your Lathe

[Andy T]

Would it really matter if I used different gears so long as they were all the same type? As I understand it as long as the ratio's are the same the end result should be the same. All I have to do is match the bore to fit the leadscrew and drive from the tumbler and also hope the overall gear size is near enough so that everything reaches from the tumbler acros the banjo and on to the lead screw, a myford gear would be much too small.
Or am I getting things very wrong ?