This is the best build I could come up with for the WHM-6D
https://mwo.smurfy-n...679c0b93780b025
Now let's plug the build data into my spreadsheet with ALL heat gen nodes and ALL coolrun and capacity nodes for a "best case" scenario.

So, if you look at row 37 you will see "Net heat per alpha burn". This represents an alpha of heat minus the dissipation that would occur over the duration of the laser being fired.
34.99 heat divided by 74.75 heat capacity results in about
%47 heat generated.
By the time you could fire again, the mech should be resting at %36 heat.
Someone could verify this in-game, but it's obviously not worth that effort.
Edited by Solahma, 01 March 2018 - 12:33 PM.