“As a touring mountain bike the steel Rennstahl 853 MTB Pinion destroys conventional categories. And as it does so, it combines an array of useful details. A trailblazer tool!”
trekking bike (August 2015)
The 853 MTB Pinion is built to match the requirements of the most demanding rider, long-term, under the toughest conditions. It’s unbothered by rain and mud, untroubled by dust and grit. It will need cleaning, admittedly – but with a bike this beautiful, that really won’t be a chore. And if you select the drive-belt option, there isn’t even a chain to look after. Developed by Rennstahl in collaboration with Continental, the drive-belt is 100% maintenance-free and needs neither oil nor grease.
The compact, completely enclosed Pinion gearing system is positioned in the bottom bracket area: central and low down. This means that as well as having a robust gearing system with even ratio steps, the bike also benefits from having its centre of gravity exactly where you want it. The heavy tail-end associated with hub gears is no longer a factor, which means the handling – especially off-road – is significantly improved. In order to ensure a secure and durable mounting for the gears, we have created a special double walled bracket that is forged and then carefully machined. This ensures the best possible linking to the down tube, seat tube and chain stays, and a solid placement for the gears. The specially-forged slider dropouts make chain tensioning easy and chain tensioners obsolete, and the right-hand dropout can be opened, allowing the easy fitting of a drive-belt. The slider dropouts also make it possible to fit a range of wheel sizes: 27.5″, 27.5″+, and 29″.
As with all Rennstahl 853 mountain bikes, the standard Pinion model is equipped with a fixed fork, developed by us and designed for a load of up to 185kg; the bike is also available with suspension forks from DT Swiss or Cannondale. There are four Pinion options to choose from: two with nine gears (ratio steps 17.5%, ratio range 364%, or ratio steps 24.6%, ratio range 568%), one with twelve gears (ratio steps 17.7%, ratio range 600%), and the top model with eighteen gears (ratio steps 11.5%, ratio range 636%). Key advantages shared by all options are the even spacing between gears and the big range between top and bottom. Gears are selected with a single grip shift; the chain-crossing problem found in derailleur systems is completely avoided. With a range of other options and accessories, the 853 MTB Pinion can be given a few individual touches or fully fitted out for everyday use.
|853 MTB Pinion||seat tube|
to top tube
to top of
|Issue||Medium||Review on 853 MTB Pinion||Link to test report|
|04/2015||Trekkingbike Magazin||"Sehr gut"||Trekkingbike Magazin 04/2015|