Riding the Truth in Seattle
We’ve been riding in the mountains and on mountain bikes lately, much more than usual. The demo bikes we have in include the Ellsworth Truth. It’s been on the cross-country scene for close two decades and has gained a cult like following amongst privateers for its active suspension a durable alloy frame. Ellsworth has now taken the Truth and evolved it into the Absolute Truth with addition of 27.5 wheels and a carbon frame.
The heart of the Ellsworth Absolute Truth remains its suspension system. To keep tires in the soil, it employs Ellsworth’s Instant Center Tracking (ICT) suspension system. Ellsworth states that the four-bar linkage design provides zero-energy loss to suspension action. By aligning the instant center on the chain torque line and continually tracking the chain torque throughout the range of travel, the suspension remains active, without pedal induced action.
Breaking with the carbon theme of the frame, a key part of the ICT system is the CNC machined asymmetrical chain stays. The chain stays are box sections joined at the lower pivot by a machined yoke, while the rear pivot sits directly in front of the rear dropouts and connect with the seat stays. The seat stays are carbon to help reduce rear wheel flex and assure alignment of the suspension pivots. The 125 mm of rear wheel travel is handled by a FOX CTD shock with remote lever. Up front Ellsworth has equipped the Truth with a FOX 27.5 CTD 32 Float that produces 130 mm travel.
Around the bend and up a climb
Despite its 125 mm of travel, the Absolute Truth is intended for racing and features a low and aggressive rider position. The suspension is more active than other race machines, especially in its initial travel. This is hardly noticeable while in the saddle, but hard efforts are met with bit of a soft feel at the pedals. Switching the FOX CTD shock to the Climb is the only setting that really eliminated the initial softness.
Making good time uphill on the Absolute Truth is determined by the CTD shock setting. For everything other than the most technical terrain, place the CTD in Climb and leave it. In technical uphill sections the trail mode can be used. It results in a slightly softer feel, but also dramatically increases traction and reduces wheel spin. On fast single-track descents, the Absolute Truth is predicable and fast with the active suspension keeping the wheels firmly attached to the ground over small obstacles. Big hits are absorbed well with just a bit of ramp up at the end of the stroke. The overall feel of the Absolute Truth is super plush. The plush suspension also aids in cornering, with the wheels constantly in contact with the ground.
More photos of the Ellsworth are on G+. Also see Issue 15 for my take on getting back into mountain biking with bikes like this.