Teknodima - Frame Repair - Riparazione telai forcelle moto raddrizzatura forcelle telaio moto

HIGH TECHNOLOGY in MOTORCYCLE FRAMES and CYCLING COMPONENTS REPAIR

	Frame Repair with Special fixed jigs
	Fork Straightening and Steering Plate Squaring-up
	Restoration/Centering of Alloy Wheels and Disc brakes
	Computerized Diagnosis of Frame Geometry

	Fork Tubes of high quality
	Steering Roller Bearings of high quality
	Computerized testing instrument of Frames Geometry

13 Ottobre 2006
Cuscinetti sterzo ...

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Frame Repair

The 290 special fixed jigs we have created were designed specifically for every model of motorcycle and scooter. These fixed jigs enable us to repair and straighten frames with precision, allowing us to obtain a safe product while also keeping their original measurements. Thanks to the aid of computerized measuring instruments and a database of 1200 motorcycle models, it’s possible to verify the geometry of the frame comparing the original parameters with those of the motorcycle being examined.
Only with technical preparation and adequate equipment, a repaired frame can return to its originally safe conditions.

Every damaged frame must be carefully examined to establish the appropriate procedure of intervention, according to the damage received by different dynamics of the accidents and the material used, be it of steel or of alloyed aluminum.

Through markings, it is possible to reveal the frame coordinates and, comparing them with the original, define the area needing work so that we can plan the phases of repair.

After having positioned the frame in the fixed jig , the repair consists in restoring the measurements of the three axles (longitudinal, horizontal and vertical) and restoring the original symmetry and inclination of the steering head, applying pressure in different neuralgic points of the frame continually monitoring on the computer the temperature and phases of the repair, until the original geometric measurements have been obtained. If the bearings seats are damaged they are restored.

With every repair, we include a certificate of warranty stating that the original geometrical measurements have been restored.

MORE INFO

The evolution of frames

The frame is the carrying structure of the motorcycle. It has many different tasks and functions and can be made of a variety of steel or aluminium alloy. Mechanical and aesthetic organs as well as kinematic mechanisms are anchored to this structure. The whole must provide a perfect and harmonious union of more and more important and determined elements requested on the market such as: aesthetics, drivability, stability, enjoyment and safety.

The first motorcycle frames were born from bicycles with motors. As time goes by , the power and performance grew and so the frames exasperatedly evolved in form and geometry by the use of innovative materials. From the initial double cradle, we arrive at the actual alloyed aluminum perimetrical frames, which include the motor as a frame stressed element. With the introduction of radials, tyres improved again in performance and allowed heavier loads, just like the appearance of the reinforcement beam on swing-arms and upside-down forks.

The last generation of frames has been designed thanks to the aid of sophisticated computerized programs and dynamic simulations, obtaining results unthinkable until a few years ago. This progress demands continual updates and improvements in repair techniques, indispensable in treating the delicate steel and alloyed aluminum materials.
Why frames shouldn’t be repaired on a motorcycle partially disassembled
Except in rare cases, TEKNODIMA, works exclusively with stripped frames because of the complexity of operations and the delicacy of materials. This is a required condition for anchoring the frame and for guaranteeing a precision in the repair, for the benefit of the safety and the obtained results. . To work on a partially disassembled motorcycle is highly discouraged for many reasons:
- The motor would be used as a point of leverage in straightening the frame, submitting the motor to abnormal loads for which it was not built. Just think that in a carter motor components spin at very high speeds and are subject to allowances of a few hundredths of a millimeter.
- The absence of adequate equipment would call for excessive working temperatures on the frame (a required condition for those who do not possess the right fixed jigs ) resulting in a loss of the original mechanical characteristics of strength and elasticity of the frame itself.
- It would also be impossible to verify the presence of crevices and cracks in the points covered by the motor. For this test appropriate verification systems with penetrating liquids would be necessary.
- Resetting the steering bearing seats would require clamping on certain tooling machines and so a naked frame.
- The original geometry would be difficult to restore.
- The frame would remain under strain.
Motorcycle Safety and Good Driving

A motorcycle must be driven in complete safety under every condition, offering stability and quick reaction to the controls.
Only an optimized motorcycle can give emotions and pleasure in driving, allowing also precision when entering a curve, manageability and directionality.
A correct running motorcycle depends on many factors and every problem must be attentively and singularly evaluated, proceeding by examining the entire subject of cycling including the geometry of the frame and its individual components

To check the geometry of the frame , we are equipped with computerized instruments able to work on fully assembled motorcyclesand we can point out, with extreme precision possible anomalies whether they would be in the frame or in the swing-arm.
Forks and steering plates must be straight, aligned and parallel with each other as well as wheel pins and rims cannot present defects on rotation.
The steering bearings and the bearing seats themselves have a fundamental role in the front-end rotation on the steering axle and in the dynamic behaviour of the motorcycle.

In the case of the wear and tear on the steering bearing, and even worse ovaling or misalignment of the seats caused by impact, we would have a lack of balance like rocking, swaying and drifting. These conditions determine an inability to govern the motorcycle creating dangerous circumstances.
For the steering to function correctly, the steering head bearings must be housed in perfectly concentric, coplanar and circular seats.

If it’s necessary, they are restored through boring on the machine tools displayed. The swing-arm bearings and the rear cushion levers need checking as well . Sometimes, though, the problem could possibly not be connected to these causes, but to the trivialities such as the wear and tear on tyres, the wrong pressure, an imperfect tyre balancing or an incorrect suspension setting. Each case is a story in itself.

TEKNODIMA
Via I Maggio, 17 - 23885 Calco (LC) - ITALY - Map »
Tel. +39(0)39.9910406 - Fax. +39(0)39.9274666
www.teknodima.it - info@teknodima.it

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