There are some around aside from adaptations of non specific products.
This is an adaptation of a non specific bag
But as you correctly observed any bag connected to the frame will expose the camera to a lot of vibration, depending on the type of terrain that you will be biking on.
So if tarmac is your thing you won’t be exposing the cameras and lenses to too much stress un less you fall of you collide with some hard object.
However I think that the best thing for you is to carry a backpack if you have a lot of gear or alternatively stick to carry one body and one lens worn with a harness on your chest, which might include, or not, a backpack with some more gear and other necessities
Edited by milandro, 05 May 2016 - 07:57 AM.
the popular expression wishful thinking is an oxymoron!
Please remove the obnoxious tapatalk signature, it adds nothing to anyone’s contribution and it is only a sneaky way used by tapatalk to push their product by polluting each forum participant with promoting their products. They don’t even pay you for this! Nobody really wants to know about the brand and type of your phone or the program that you use to post on the forum.