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The Oneup variable seatpost is not only available in many lengths, but also in all common diameters. Striking features are the low weight of just 458 grams (180 mm stroke) and the very low stack height of the saddle (30 mm). This also makes the V3 interesting for smaller riders who can utilise a lot of travel. The stroke can be travelled by 10 or 20 millimetres using small pins. The lever can be adapted to the design of the bike using coloured rubber grippers. However, these cost an extra 8 euros.
There's not much in the small package with the V3 dropper post. In addition to the post, the box only contains some mounting paste and the pins for adjusting the stroke. The remote and the adapter for the brake clamp have to be ordered separately and push the price up to a total of 366 euros, which is still acceptable in comparison.
Fitting the OneUp V3 telescopic support
The Oneup V3 scores points with its simple support assembly. All you need is a 3mm Allen key to clamp the cable in the lever. There is a clever cutting aid on the remote that can be used to shorten the cable to the right length. The end fits into a small recess on the rubber coating of the lever and is neatly stowed away - very clever. At 150 mm, the outer sleeve supplied is not too long. For some bikes, this could be a tight fit.
You can slide the saddle into the mount without having to remove it completely. However, the saddle clamp bolts are very close to the upright tube. Beware of scratches!
One small point of criticism: the instructions are only available in English and only via the website. In addition, the assembly instructions are not very clear - they could be better.
How does the telescopic support get onto the bike? It's actually quite simple. With our step-by-step guide the installation of the lowerable seat post is no problem.
Ease of use & function
The lever can be easily aligned with the handlebars via three positions, but there is no adjustment in the third plane - i.e. how far the paddle is angled forwards or backwards. The rubberised surface is nice and provides very good grip. The lever runs quite defined and smoothly and is pleasantly close to the grip, so you don't have to move your thumb far away from the handlebars.
On the first ride, the support needs a little running-in time, but then it moves through the stroke quite smoothly and with consistently low force. At the beginning, V3 faltered before the end stop, but this has also subsided over time. It is also easy to find intermediate positions when extending. However, the cartridge smacks loudly and stops. The extension speed is similarly good and high as with the Fox Transfer, and the end stop is also noticeable with a clear clunk. However, the speed of the V3 Dropper Post cannot be adjusted.
The seatpost is well locked in place, but with a little more weight on the saddle it extends with a smack. Slight play and some flex between the dropper post and stanchion can be felt right from the start.
Price & Info - OneUp V3 Vario seatpost
- Price: 299 / 49 Euro (support / remote) >> available here
- Weight¹: 458 / 547 g (support / ready to ride)
- Stroke: 90/ 120/ 150/ 180/ 210/ 240 (tested)
- Diameter: 30.9 / 31.6 / 34.9 / 27.2mm (tested)
- Length / insertion depth¹: 505 / 133 - 273 mm
- Stack height¹: 30 mm
- Scope of deliverySupport; reducing pins; mounting paste; remote and clamp/adapter
- Special features: instructions are only available online; remote and adapter are added to the price of the post; available in many lengths and diameters; stroke can be reduced by 10/20 mm; cable clamping is on the post, not on the remote; very low stack height
Conclusion & evaluation
Many lengths and diameters, as well as a very usable stroke thanks to a minimal stack are the absolute plus points of the Oneup. The weight is also extremely low. The rubberised lever feels grippy and defined on the thumb and is easy to adjust. The stroke reduction via tiny pins is not an ideal solution, and there are no instructions included in the scope of delivery. Slight play and constant smacking of the cartridge cost points in terms of function. Otherwise a recommendable support.
¹BIKE measured values. Weight: telescopic seat post / ready to ride: seat post, remote, 1.5 m outer shell, cable pull ²The BIKE grade is independent of price. The BIKE rating is based on the school grading system with grades 1 to 5.
Stefan Frey
Editor
