Hi guys I have a BigBang Pegasus and it spins for about 2 min and 10 sec.... is it ok?

If you are using it uncustomized, it is completely normal, because F is not meant to be a Stamina Bottom ... To learn more about Stamina, you should read the Stamina article on Beywiki, and to know what works best for Stamina in Metal Fight Beyblade, you need to check the Competitive Metal Fight Beyblade Combos topic. We also have a Solo Spin Time thread where you can see exactly what got the best solo spin times in Metal Fight Beyblade.