> "required a full engine rebuild insanely often, something like every 1000 hours." If that is true it is delightfully ironic. I have heard that the main reaso

> "required a full engine rebuild insanely often, something like every 1000 hours." If that is true it is delightfully ironic. I have heard that the main reason the M1 has a turbine is that the army saw the dramatic improvement in reliability that turbines brought to their helicopters and said "that, we want that in a tank"