Advanced Suspension Technology You Can Enjoy
Your Recumbent with Suspension Offers Comfort and Safety
Let’s start with the best bit: There’s no need to read the small print on this page to enjoy the luxurious comfort offered by your new recumbent. All the latest vehicle technology expertise comes pre-installed into your HP Velotechnik bike or trike. Lean back, relax, and enjoy the smooth ride and the scenery around you! Now look forward to the next pothole: Your roughest trails have just become even more inviting to enjoy what German engineers call “Fahrvergnuegen” – with safety!
HP Velotechnik’s refined suspension system treats you to relaxing comfort. It increases safety by improving control and road holding. And the best part: You save energy – an effective suspension lets you go faster! All unsprung jolts convert part of the propulsion energy into an upward or downward movement of the vehicle and rider, never to be recovered.
On the suspended HP Velotechnik bikes and trikes on the other hand, only the wheels follow the contours of the rocky road. Even riding along dirt tracks becomes a pleasure!
Important: The quality of a cycle’s suspension becomes particularly clear when carrying a great deal of luggage or riding on hills. Compare the suspension technology of the vehicles in which you are interested under different ride conditions: Paved streets, undulating roads, and dirt tracks. Load the luggage rack (and the lowrider if available) with heavy bags and check the suspension when riding on hills in low gears. It will quickly become apparent if your pedaling force is converted into undesired pogo instead of powerful propulsion.
The No Squat Concept
Our Rear Suspension Efficiently Transforms Your Pedaling Power into Propulsion
The rear suspension of our recumbents uses HP Velotechnik’s No Squat suspension concept. This represents optimized chassis design: The engineers designed the chassis of our suspended recumbents to combine outstanding comfort with the efficient transmission of pedaling forces to the road. The key to this is the agile, adjustable suspension and the avoidance of any adverse effects from the drive unit in the chassis.
With our No Squat concept, the combination of an exceptionally stiff rear frame with the sophisticated positioning of the single swingarm pivot, the large, double ball-bearing-mounted chain roller effectively prevents drive forces from affecting the suspension and avoids unpleasant pedal kickback. What do you feel? Impressive comfort and 100 % propulsion thanks to maximum power transmission.
Pedal kickback refers to the pedals jolting when the chain suddenly tightens or slackens when the suspension activates. HP Velotechnik’s chassis geometry ensures that there is no noticeable change to the chain length during compression.
Drive forces show as compression when pedaling. This occurs if dynamic forces combine to create a resultant force that causes leverage to take effect at the swingarm’s pivot point. For this reason, many trike and bike designers, initially attempt to place the pivoting point within the chain’s play. In practice, such simple designs often suffer from undesired pogo-style oscillations, which have to be compensated for by high levels of damping in the shock.
However, simple rubber or elastomer buffers are unable to provide such levels as they only have very low, non-adjustable damping. If the damping is too high on the other hand, the suspension responds poorly. Moreover, a great deal of drive energy is lost – energy which was meant for your propulsion!
HP Velotechnik’s chassis design not only considers the primary chain forces but also the reaction force on the rear wheel where power is transmitted to the road – after all, your bike or trike should dynamically accelerate when you pedal. Consideration is also given to the variable inertial forces of the masses comprised by the vehicle, rider, and luggage.
The chassis geometry and optimum drive chain routing are individually determined for each model by HP Velotechnik’s engineers . The Scorpion fs 26 does not simply use the same frame as the Scorpion fs 20 but with an extended rear wheel swingarm. Instead, the full-suspension frame was created meticulously from scratch for the optimum implementation of the 26-inch wheel concept.
Whereas a well-designed suspension should react sensitively to even slight bumps on the road, the frame and swingarm bearing must be built as rigidly as possible so that you can precisely control and dynamically accelerate the cycle.
The rear swingarm pivots with durable maintenance-free bearings on a precision-machined axle. The elegant triangular design of the rear swingarm creates a slender, robust framework to which the shock unit is connected with a harmonious flow of force.
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Shock Units: Steel Spring or Air Shock?
You can choose from either a steel spring or an air shock unit, both tried-and-tested in the MTB sector. Their spring stiffness and oil damping rate have been finely tuned by our expert engineers.
Whereas simple elastomer buffers become noticeably embrittled at low temperatures, HP Velotechnik’s shocks remain reliable and comfortable!