Snowmobile Front Track Assembly Braking Torque Transfer
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Solution Overview
Problem
Conventional snowmobiles lack effective front braking capabilities, as the front skis are designed for minimal friction and flotation, failing to assist in braking despite weight transfer during rear braking.
Innovation Solution
A track assembly with wheels and a brake system integrated into the front ski and track assembly, allowing for rotational fixation and torque transfer to counteract the braking torque, enabling front braking by connecting the brake assembly to a rigid connection member and wheels within the endless track.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the front skis are designed with a smooth gliding surface to provide flotation and reduce friction, then the snowmobile can move more efficiently over snow, but the front skis cannot assist in braking despite weight transfer during braking
Solution Approach 1:
The patent combines the front ski and front track assembly into a single integrated unit. The track assembly includes wheels (110) that can be rotationally fixed to axles (124) and connected via rigid connection members (152) to transfer braking torque from the drive track to the front wheels, enabling the front assembly to provide braking assistance while maintaining its flotation and gliding functions
Solution Approach 2:
The front track assembly serves multiple functions: it provides flotation on snow like traditional skis, enables steering through handlebar control, and now also provides braking assistance through torque transfer from the drive track. This multi-functional design resolves the contradiction by making the front assembly capable of both efficient gliding and effective braking
2Force
If a brake assembly is applied to the first wheel (sprocket wheel) in the track assembly, then braking torque can be generated, but the torque must be transferred through the track to the front wheels requiring rotational fixation and rigid connection members
Solution Approach 1:
The braking system is segmented into distinct functional components: the brake assembly (160) applied to the sprocket wheel (108), the rigid connection members (152) that transfer torque, and the rotationally fixed wheels (110) at the front. This segmentation allows each component to perform its specific function while maintaining overall system manageability and effectiveness
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enhances braking performance at the front of the snowmobile by effectively transferring braking torque through the wheels and track assembly, improving control and safety during weight transfer events.
Implementation Method 1
a brake assembly operatively connected to the first wheel... The brake assembly includes a brake pad assembly disposed at least in part inside the brake drum
Data Source
AI summary
A ski and front track assembly has a track assembly including: an endless track, and at least two wheels disposed inside the track. At least one of the at least two wheels is disposed forwardly of at least one other of the at least two wheels. The ski and front track assembly also has a front ski element connected to the track assembly and extending forwardly therefrom. The front ski element is pivotable about a steering axis together with the track assembly. A snowmobile having the ski and front track assembly is also disclosed. A track assembly having a braking system and a snowmobile having the track assembly are also disclosed.