Modular Wheel-Unit Snowmobile Ski for Mixed Terrain
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Snowmobiles face difficulties in maneuvering on non-snow surfaces due to the inability of their skis to respond to steering operations, leading to excessive wear on carbide runners and logistical challenges during long trips or when accessing services on asphalt or gravel roads.
Innovation Solution
A modular wheel-unit system for snowmobile skis, allowing for easy deployment of single or tandem-wheel units with various deployment means, including manual, semi-automated, and automated options, which can be mounted on the kingpin or steering spindle, enabling smooth transition between ski and wheeled modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If skis are used for snowmobile travel, then the snowmobile can glide smoothly on snow and ice surfaces, but the snowmobile cannot maneuver properly on gravel, hardtop, or other non-snow surfaces
Solution Approach 1:
The ski is designed with a movable wheel unit that can be deployed or retracted based on the surface conditions. The wheel unit is mounted on a pivot mechanism that allows it to rotate between a retracted position (where the ski glides on snow) and a deployed position (where the wheel contacts non-snow surfaces). This dynamic configuration enables the snowmobile to adapt its support mechanism to different terrain types, resolving the contradiction between optimized snow performance and non-snow versatility
Solution Approach 2:
The ski incorporates both a glide function (for snow surfaces) and a wheel function (for non-snow surfaces) within a single integrated structure. The wheel unit is positioned such that it can serve as an additional support point when deployed, while the carbide runner maintains its glide capability when the wheel is retracted. This multi-functionality allows the same ski to effectively operate on both snow and non-snow surfaces without requiring separate specialized equipment
2Adaptability or versatility
If conversion kits are used to replace skis with wheels, then the snowmobile can travel on gravel or asphalt surfaces, but the conversion requires removing the ski and mounting wheels permanently
Solution Approach 1:
The wheel unit is designed as a separate, modular component that is independently mounted on the ski structure. The wheel assembly includes its own mounting bracket, pivot mechanism, and connection points, allowing it to be installed as a distinct module rather than requiring complete disassembly and replacement of the ski. This segmentation enables relatively easy conversion between ski-only and wheel-assisted modes without permanent modification
Solution Approach 2:
The ski is pre-configured with mounting structures, pivot points, and attachment mechanisms during manufacturing, so that the wheel unit can be quickly deployed when needed. The kingpin area and surrounding structure are prepared in advance with appropriate mounting features, eliminating the need for complex field modifications or custom fabrication when converting between travel modes
3Adaptability or versatility
If the wheel unit is mounted on the kingpin, then the wheel can be deployed for non-snow travel, but the kingpin must be replaced with a longer one or the ski must be removed
Solution Approach 1:
The wheel unit mounting bracket is designed to nest within or around the existing kingpin structure. The pivot mechanism for the wheel is positioned such that it utilizes the kingpin's existing mounting location and structural support, with the wheel assembly fitting into the available space around the kingpin. This nested configuration allows the wheel to be mounted without requiring a longer kingpin or removal of the ski, reducing the overall complexity of the conversion process
Data Source
AI summary
A snowmobile ski adapted to accommodate wheel units that are movable between a deployed position and a stowed position. The floor of the ski has one or more wheel openings to allow wheels to drop down to the deployed position. A wheel unit may have a single wheel or two wheels in tandem. The wheel units may be mounted on the kingpin, the side wall, inner ribs, or on the steering spindle.