Recently I've made a few hacked up mods to make mapping on a pushbike easier and figured it was worth sharing a bit about them.

Problem 1: No bike GPS mounting

Solution: Make one.

Pic 1: http://img13.imageshack.us/img13/2426/img4678yg3.jpg
Pic 2: http://img413.imageshack.us/img413/9999/img4679jpgsmall.jpg

As you can see it's just a bit of steel that's been bent to acomodate the GPS snugly. A few rubber bands hold it in place, then the pipe clamp tightens the steel's grip on the GPS a bit further.

Parts required: GPS, Bit of steel or whatever, pipe clamp
Tools required: Vice, Hammer

Pros: Easy to build, cheap, clamps very snugly
Cons: Requires tools to remove from bike, namely a flathead screwdriver or 5/16th" socket/spanner to undo pipe clamp.

Problem 2: Camera used for mapping was found and doesn't include charger

Solution: Make one

Pic 1: http://img413.imageshack.us/img413/9273/img4681jpgsmall.jpg
Pic 2: http://img21.imageshack.us/img21/5270/img4682jpgsmallxu6.jpg

This idea is basically attributed to user c-j-b, he suggested a couple of pins in a bit of wood as terminals. I've used nails because I couldn't find any pins.

Parts required: nails/pins, bit of scrap timber, some other li-ion charger, alligator clips
Tools required: hammer

Problem 3: Bike seat uncomfortable for long rides

Solution: Hack up an old, comfortable seat to fit the modern mounting

Pic 1: http://img19.imageshack.us/img19/9803/img4684jpgsmallok9.jpg
Pic 2: http://img12.imageshack.us/img12/8287/img4683jpgsmallxq8.jpg

Nothing fancy here, just the bars under the seat where the stem clamps on were too close together, so I bent them out with some beefy pliers and just forced it all together.

Parts required: More comfy bike seat
Tools required: Pliers, screwdriver etc.

Problem 4: It's currently raining a bit

Solution: Harden the fsck up.