This is a simple iPhone 5/5s handlebar mount for your bike.
It is pretty tight but in return it does not fall of while riding.
You are still able to plug in the dock-connector, audio-jack and use the speakers and side buttons.
There is a version for 25.4mm and 31.8mm handlebars make sure you get the right one.
See also the instructions.
print with support and raft (i know, a lot of wasted material but no screws ;) )
This settings worked for me:
Numbers of shells: 3
layer height: 0.25mm
about 3 hours
- i used two 5mm cable ties
- (place a piece of bike tube or grip tape or something similar to prevent the mount from rotating around the handlebar)
- pull the cable ties tight