Worn Shifting Dogs

[fox46]

I have been doing some research on transmissions, and it seems that many teams are using "two speed shift-on-the-fly" transmissions that use a shifting dog to engage one gear ratio or another by locking together with a counterpart. I was originally thinking of a tranny with a similar mechanism, but I was worried that the shifting "on-the-fly" would result in a very violent transition between high and low gear, in addition to excessive wear on the shifting dog, from meshing with it's gear-mounted counterparts. Is there a trick to these transmissions, or do you just have to move the dog really really fast and hope it doesn't grind against the dog gears? If my concernes are justified, then what kind of life expectancy do you get before you have to replace the dogs?