Big Agnes Copper Spur HV UL1 vs NEMO Dragonfly OSMO Bikepack 1P
Two shelters, measured against each other on the figures that decide whether they work on a bike.
The short answer
The Copper Spur HV UL1 takes weight and floor space; the Dragonfly OSMO Bikepack 1P takes pole length. On a bike the pole set usually decides it before the rest do.
Assembled from the differences below rather than written over them. Every figure is a published measurement or computed from one — nobody here has used either one.
Where they differ
3 of the 6 things we can measure come out differently.
Folded pole length
77mm shorter on the Dragonfly OSMO Bikepack 1PThe length of the pole set broken down, which is what decides whether it goes across your bars. Almost no maker publishes it, which is why this comparison is hard to find anywhere else. The verdict beside each is for drop bars.
Minimum weight
86g lighter on the Copper Spur HV UL1Trail weight where the maker publishes one — fly, inner and poles, without the stuff sacks or the footprint. Worth reading against the pole length rather than instead of it: a Bikepack edition is usually a few grams heavier for shorter poles.
Floor area
0.17m² more floor in the Copper Spur HV UL1Inner length by inner width as published. On a bike trip the floor also has to take whatever you brought inside off the bike, so a few centimetres is not nothing.
Side by side
Including the rows where they are level.
| Big Agnes Copper Spur HV UL1 | NEMO Dragonfly OSMO Bikepack 1P | |
|---|---|---|
| Folded pole length | 445mm — too long for drop bars | 368mm — tight on drop bars |
| Pole figure source | Packed bag length, used as a proxy | Maker's own pole figure |
| Minimum weight | 964g | 1050g |
| Floor area | 224 × 97cm — 2.16m² | 224 × 89cm — 1.99m² |
| Peak height | 97cm | 100cm |
| Price | $400 | $400 |