u/The_Last_Lark

I am not a percussionist, so I am not sure about the rules (written or unwritten) of which parts can be put together for one player. I did hear however that typically, the timpanist doesn't play other instruments because it's more difficult to move around.

In a piece I am writing, I would like to give the timpanist bass drum and tambourine as well. They'd have about 2 and a half minutes to move from timpani to bass drum and 1 minute 45 to go from bass drum to tambourine. There is no timpani in the second half of the piece. My guess is that would be long enough and that it should be fine. Is that correct?
Sidenote is too that if there is no bass drum, the bass drum part would also be played on the timpani.