Snowmobile Ski Bumper Weight Distribution Design
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Solution Overview
Problem
Snowmobiles experience darting issues due to the front ski digging into ruts, leading to unintended paths and potential accidents, with existing solutions being expensive, time-consuming, and only partially effective, as they fail to address the role of ski bumpers in preventing this issue.
Innovation Solution
A replacement bumper designed to alter the weight distribution and orientation of snowmobile skis by changing the contact points with the spindle, made from polyurethane, which reduces darting by increasing rear-end contact and decreasing front-end contact with the ground, thereby improving steerability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If replacement bumpers are designed to prevent darting by altering ski orientation and weight distribution, then steerability and safety are improved, but manufacturing complexity and cost increase
Solution Approach 1:
The bumper design changes physical parameters of the ski-spindle system by altering the contact point location and orientation. The bumper is positioned and angled to change the mechanical interaction between the ski and spindle, thereby modifying weight distribution and ski orientation without complex mechanical additions
Solution Approach 2:
The invention extracts the darting prevention function from complex ski systems (skis, carbides, studs) and isolates it to a simple bumper component. By focusing solely on the bumper's geometric configuration and contact point, the solution separates the prevention function from the rest of the ski system, simplifying the overall design
2Adaptability or versatility
If existing bumper specifications are used from OEM or secondary market, then compatibility is maintained, but darting prevention capability is insufficient
Solution Approach 1:
The bumper employs asymmetric geometry with specific angular orientations (e.g., 45-degree angles) and non-standard contact point positions. This asymmetric design creates a unique mechanical interaction that prevents darting while maintaining compatibility through standardized mounting interfaces, distinguishing it from symmetric OEM bumpers
3Object-affected harmful factors
If ski orientation is changed to reduce front-end contact with ground, then darting is reduced, but ski stability may be affected
Solution Approach 1:
The bumper design allows dynamic adjustment of ski orientation based on operating conditions. The geometric configuration enables the ski to adapt its angle relative to the ground, optimizing contact for stability while preventing front-end digging into ruts, thereby addressing both stability and darting prevention needs
Data Source
AI summary
A replacement bumper for a snowmobile ski is provided and methods for using the same. The replacement bumper has an abutment surface that makes contact with a spindle of a snowmobile in order to increase the contact surface area of a rear portion of a snowmobile ski and the ground and/or increase the weight being distributed on the rear portion of the snowmobile ski, which prevents the darting or tracking of the snowmobile ski. Also, includes is a method for removing an OEM bumper from a snowmobile ski assembly and installing a replacement bumper into said snowmobile ski assembly.