Ortlieb QL3.1 Lock, Improved Design

This is an improved lock design from the original design
-less material & faster to print
-lower profile, less obvious
-easier to attach and remove
-should be more secure over rough trails / roads
-more resistant to accidental removal from loads mounted on the rack

link to original design: 

https://www.prusaprinters.org/prints/42699-ortlieb-ql31-security-or-lock-clips

I have a set of Ortlieb bags for my commuter bicycle that use the QL3.1 mounting system. These work great, are convenient and easy to use, and give the bag a low-profile for carrying off the bike. However, they do not have a 'factory' security option. I often park my bike at the grocery store, etc, and want to deter casual thieves from stealing my bags.

So, I designed these clips. You'll need to use both right and left (included in the pair files) clips. If you use only one the bag can still be easily removed. This clip just prevents the Ortlieb mechanism from opening. Obviously a thief with any time or motivation will figure this out quickly and remove one or both of the clips.

As always, I included Solidworks 2020 files for your re-mixing fun.

Print Settings

Printer Brand:

Prusa

Printer: 

I3 MK3S

Rafts:

No

Supports: 

No

Resolution:

200

Infill: 

70%

Filament:

Generic PETG Black 
 

Notes: 

I used PETG for toughness, however any relatively non-brittle material should work fine.

I would recommend using black to make the security clips non-obvious.

Category: Sport & Outdoors