Truing stand

Single stand

A truing stand is an assembly stand for holding a spoked wheel (bicycle or motorcycle) for aligning ( centering ) bicycle rims after assembly or if there is a lateral or vertical runout. The stand tensions the hub of the spoked wheel and holds it in a fixed position during the centering process.

technical structure

Jig

A truing stand is characterized by two centrically tensioning bars between which the hub is held. A distinction is made between two systems in addition to lateral clamping when holding the hub.

an upwardly open, mostly prismatic receptacle in which the axis ends rest, or
a three-point clamping in which the axis ends are clamped against a stop on the circumference.

Different hub types require aids such as suitable adapters to accommodate them in the truing stand.

Measuring device

With a measuring device attached in the middle of the bracket, the rim can be automatically centered easily and without calculation. A dynamic display, which is placed on the rim, shows the position of the rim in relation to the hub as well as the concentricity deviations during the entire centering process.

Truing stands have been registered with the German and European patent offices.

The centering process

During the centering process, the spokes of the wheel are pretensioned by turning the spoke nipples on the thread of the spokes with a nipple tensioner . In addition to the spoke tension, the aim is to minimize the lateral and vertical runout of the rim for concentricity within tolerances.

Modern or newer truing stands do not require any calculation or measurement of the components and can center the rim directly to the center. A centering gauge is no longer required.

In the case of wheel holders, the measuring device must first be set to the desired value by means of calculation, measurement of the components or by means of procedures in order to achieve the desired rim position. The result should be checked with a centering gauge.

Ordinary wheel holders

Wheel holder

Non-centric tensioning systems are popularly referred to as truing stands, whereby these only fulfill the function of a wheel mount or wheel holder.

A simpler version, which is also known as the truing stand, is the single stand model in which the wheel is attached to one side of the hub. The position of the rim must also be checked here on the centering gauge.

Web links

Investigation and presentation of the definition of the centering stand at centrimaster.de (Wilhelm Schon)

Individual evidence

↑
Writings on patent applications at the German Patent and Trademark Office and the European Patent Office NL-2280 HV Rijswijk, patent application was made under the numbers
- 10 2005 049 346.7
- DE 10 2004 049 540.8
- DE 10 2004 051 436.4
- DE 10 2005 018 215.1
- 11 2004 000 318-21
- DE 10 2006 012 478.2
- DE 10 2008 018 838.7
- PCT / EP2004 / 002047

[1] Writings on patent applications at the German Patent and Trademark Office and the European Patent Office NL-2280 HV Rijswijk, patent application was made under the numbers

10 2005 049 346.7

DE 10 2004 049 540.8

DE 10 2004 051 436.4

DE 10 2005 018 215.1

11 2004 000 318-21

DE 10 2006 012 478.2

DE 10 2008 018 838.7

PCT / EP2004 / 002047

[2] 10 2005 049 346.7

[3] DE 10 2004 049 540.8

[4] DE 10 2004 051 436.4

[5] DE 10 2005 018 215.1

[6] 11 2004 000 318-21

[7] DE 10 2006 012 478.2

[8] DE 10 2008 018 838.7

[9] PCT / EP2004 / 002047