Using this plug, you can store stuff inside the steerer tube of a mountain bike. This is the hollow space inside the headtube of the bike. The plug goes in the underside of the steerer (top of the fork). It will fit a 1.5" tapered head tube. On my bike this gives approximately 1.25 x 5.5 inch cylinder of storage space. I can fit a CO2 inflation and a couple of thin tire levers.
If you don't want to print with flexible material for the 'seal', you can use some rubber o rings or a piece of foam cut into a ring shape. I tired this and it worked well with all three seal solutions.
The bolt I used is a 3mm (M3 x 15mm). I used two nuts but there are a few ways you could do this. Print the wing nut if you want to make it 'tool-less' to open.
back_v3.ipt | 261.0KB | |
back_v3.stl | 57.4KB | |
cap_v3.ipt | 631.5KB | |
cap_v3.stl | 284.8KB | |
m3_wing_nut_V1.ipt | 134.5KB | |
m3_wing_nut_V1.stl | 31.7KB | |
seal_v1.ipt | 316.0KB | |
seal_v1.stl | 345.6KB |