You are here

10 March 2016 - 10:06pm

ICE Sprint X RS-26 with 90mm drum brakes and 700c Bionx electric-assist


This is a custom build-up of an ICE Sprint X with a rear suspension, Bionx 350W electric-assist built into a 700c rear wheel, and 90mm Sturmey-Archer drum brakes.

The Sprint X has fancy wheels but they are usually built around front disc hubs and a conventional rear hub. In this case, the owner opted for the long-wearing, low-maintenance Sturmey Archer 90mm drum brakes. Since the trike is motorized, the slight weight penalty was not a factor.

She also wanted the largest rear wheel size. We found that a 700c rear wheel would fit with a few millimeters to spare. We custom-built the rear wheel around a Bionx 350W motor supplied from a previous installation. The larger wheel-size was not compatible with the standard rear V-brake parking mechanism, so we used conventional brake levers with locking buttons.

She also specifically wanted the SRAM X5 twist shifters over the standard X bar-end shifters.

We looked at a variety of battery mounting options. A tensioned, hanging system was the lightest and most elegant solution. We used the strength of the seat rails to hold the battery. A simple water-bottle cage holder was mounted to an upper seat-rail. We stabilized it with a custom-made brace to the next rail down. The cable length was perfect and the battery slides easily in and out of position. Its location is central and out of the way. The weight of the battery support system is minimal.


Image gallery


Catrike Eola lead banner image

Catrike announces the Eola, a new recumbent trike model for 2019.

Pinking handlebar mechanism has serrated edges that mate with serrated clamp to remember previous position and angle

"Memory" is designed into handlebars on ICE recumbent trikes with sawtooth edges like those produced with pinking shears.

New Bacchetta B3 seat strikes middle ground between Recurve and Euromesh seat-styles.

Electric-assist and retrofit electric motor company Bionx has gone bankrupt and its assets are being sold off.

Sideview of ICE Full Fat recumbent trike with Rohloff Speedhub drivetrain

This ICE Full Fat off-road recumbent trike with Rohloff 14-speed Speedhub and full packing rack system and will be used for exploring and hunting off-road in the Sierras.

JCS on his Catrike 700

Researchers in Britain studying elderly endurance cyclists have discovered profound benefits to cycling at an older age.