This medicine depends on the degree of modification. First of all, it shows that increasing torque will increase the load of gearbox, and there is a margin in general design. That is to say, if the gearbox is not greatly modified, it will not exceed the normal bearing capacity of the gearbox, and the impact will not be great, but the general modification will not only change this little. If the torque increases too much, the gearbox will be overloaded, and serious problems will occur in life and reliability.