It's not that we don't want to share info - but everyone wants everything handed to them these days. To that end you get 10 threads on the same thing in a week.

As for your problems topgun - it's no wonder you melted everything 4850 KV motors on 4S in a 60-70mm fan will run anywhere fromn 50-70 amps! Now I assume you have 1 esc per motor or you would be asking answers for a different problem.

I'll start by telling you there is no cut and dry answer as different quality and type of motors will absorb different powers (low quality, Chinese motors will not do much). Same with batteries, fans, and esc's.

I do have a pair of GWS 64mm fans with 3900 KV motors and on 3S they pull about 17 amps each. Go to 4200 KV and they will pull about 28 amps each. Generally speaking 3000-4000 KV motors are for 3S and 4S anything more than that and you are good for 3S only and upwards of 5000 KV and more is really only suited for 2S. That being said - like everything in life, there are exceptions to this and these are very general rules only.

I somewhat suspect that a 5000mah battery - while good for the amps - is too big and heavy for the plane you are putting it in. (A twin 64mm fan plane). Two of these would probably do well in your plane: http://www.rcgroups.com/forums/showthread.php?t=1138514

I suggest you go to that site as well for anything electric related - everyone hangs out there, with lots of good info.