Originally posted by Windsorguy99
As the bearings warm up the viscosity of the lube will go down allowing it to free up...
don't be so hung up on how long your drivetrain will spin....
agreed,a drivetrain that spins for ages will often have a large rotating mass....yes i admit a free drivetrain will spin for longer but a large rotating mass carrying a lot of momentum will allow the drivetrain to spin for longer.
if you run your bearings dry then they will get hot and often collapse..or collapse easier than a lubed bearing (this was the common cause of xray layshaft bearings collapsing..getting to hot from them running dry)
i run all my bearings with both sheilds removed (apart from the small metal shielded bearings) with a drop of LRP bearing oil in each one....after each run i spray a bit of motorspray (well mine is solvent spray, works same but smells nicer..muahaha lol) in each hub bearing and drop a bit of bearing oil there, they seem to run nicely and they aren't feeling gritty yet..i have run them shieldless since i built the car.