Secondary Locks

Thanks for writing these lists, I don't even own a SS of Fixed Gear bike anymore, but these lock details are very useful for us commuters.

I just purchased a Magnum 3103 for 16 quid off ebay to carry about. I leave a 16mm lock at work. I can confirm the metal shackle is 13mm in diameter and it weighs about 800-900g. It appears to be very similar (identical?) to the OnGuard style locks. I looked at the Abus 40/401 but couldn't see much advantage. Ideally I wanted a 16mm mini lock but couldn't find one (most seem to be 16mm across the rubber outer).

Good post, and interesting. Cheers.

Though, the OnGuard Brute Mini is 16.8mm in thickness, so it may have been the thickness wanted, but at nearly 3 times the weight, you probably would be very glad for your eventual choice after all.