↑This is an Ortlieb Mud Racer Fan saddle bag—ostensibly designed for drying the rear tire and keeping mud off—but lately I've been feeling like it lacks power.
The battery is rated at 1.2V and uses two AAA cells, but I want to swap it out for a 9V battery.
Since that won't match the motor's maximum voltage rating of 3V, I'm replacing the motor too.
I decided to fit it into a Blackburn Barrier saddle bag.
Like with the Ortlieb, if the saddle bag has good waterproofing,
I don't need to worry about waterproofing the battery case or motor itself.
With a 9V battery and a motor rated to 12V maximum, there's no problem with normal use.
At rated load, the RPM roughly doubled, so if you stuck your finger in the fan while it's spinning,
you'd risk a nasty injury. That's why I'm using a guarded fan now.
The motor box got bigger while the saddle bag got smaller, so fitting one tube in there maxes it out.
Weight jumped from 25g to 204g—a dramatic increase.
It's all a bit backwards, but you have to not worry about that.
It's supposed to be a Rear Tire Dryer Mark II, but the fan's not pointing at the rear tire at all.
I've given up trying to justify it. I mounted it for the propulsive thrust.
↑This is the worst. I just said the quiet part out loud.
But I'm not renaming it.
As another side effect, it also has the benefit of disrupting the drafting of anyone riding behind me.