"Dog shifters"

[Ryan F.]

I have been looking at methods of making a shifting gearbox for next year, and have noticed the popularity of "dog" shifters this year. I've looked at specs of gearboxes such as 45's, but have not been able to figure out how these work. If anyone would be willing to explain this to me, it would be greately appreciated.

Also, I was wondering if anyone can post some specs of any dog shifters you have....how to make them etc. I've read on some threads that some teams have made some simpler ones that do not require a high degree of machinging....if anyone has a design for something like this...that would be prefered.