I am building a bike. The headset is in the head tube, and the next thing is to fit the stem and handlebar to the steerer. At this point, it seems I need some headset spacers in between the headset and the stem.
How many headset spacers am I likely to need? Or rather, how much total height of spacers? Is there any way to work this out other than trial and error?
The frame has quite different geometry to my current frame, although my body's geometry is not changing. Should I try to reproduce the space on my current bike?
Headset spacers are available in all sorts of combinations; would it be prudent to get something like a pack of five 10 mm spacers? Or a set of a 10 mm and two 5 mm? Am I likely to need more space than that? Less?