Throw in the extra grip going around corners and you have yourself a fast, fun-machine. With tyre pressure as low as 10 – 15psi, the Sphere 1 rolls noticeably more smoothly than my steel Mercer Hungry Monkey hardtail with a level of “suspension” built into the wide, fat tyres which allows for extra momentum going through or over rough terrain. These offer good grip and traction with none of the “riding on marbles” feel. An evil of plus size tyres is that they become quite spongy if the tread blocks are too big. The Chronicle is a good plus sized tyre suiting the Sphere 1 well. Silverback selected the 3.0″ Maxxis Chronicle tyres using EXO with a Kevlar Bead casing. The SRAM hubs are not the fastest engaging hubs when applying the pressure but once up to speed they roll smoothly with no signs of drag. With an outer rim width of 50mm and inner rim width of 45mm the rims are properly wide and come with SUNringlé’s black rim tape. The Sphere 1 rolls on SUNringlé Mulefut SL rims laced to SRAM hubs. This also results in a greater weld area and less stress risers, both of which should make the frame more durable. Cable routing is external for ease of maintenance and there is space for two large water bottles inside the front triangle.Īlthough I am a fan of tubes with some hydroforming and a bend or two, the straight, oval main tubes look good and somehow add to the menacing look of the bike. Workmanship and attention to detail is high on the frame and extends to the build kit with colour matching rim decals and saddle. ![]() The Sphere 1 frame is made from 6061 Alloy with custom butted tubing that is hydroformed to increase stiffness and strength while keeping weight down. ![]() There are two models available in the range with the Sphere 1 pitched as more performance driven bike of the two, with shorter chainstays and high end aluminium tubing, while the Sphere 2 has a slightly more stable geometry for increased traction and balance for entry level riders. The extra small and small bike sizes use 27.5 x 3.0” tyres, whereas the medium, large and extra large bikes are fitted with bigger 29 x 3.0” tyres. It features 3.0″ tyres to add grip, stability, and comfort. The Sphere 1 is Silverback’s reimagination of the hardtail with plus sized wheels.
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