Remote Snowmobile Throttle Control via Bowden Cable
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Solution Overview
Problem
Snowmobiles often get stuck in snow, making it difficult for a solo operator to simultaneously pull the vehicle and operate the throttle, as traditional throttle controls are thumb-based and not easily accessible while pulling.
Innovation Solution
A remote throttle control system using a Bowden cable with a manually operable actuator, spring clamp, and elastic strap for secure attachment to the handlebar, featuring a safety tether and spring-loaded mechanisms to prevent unintended throttle activation and ensure operator safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a traditional thumb-controlled throttle lever on the handlebar is used, then the throttle can be operated while riding, but a solo operator cannot simultaneously pull the front of the snowmobile and operate the throttle
Solution Approach 1:
The throttle control function is segmented from the handlebar assembly and relocated to a remote position. The throttle trigger is separated from its traditional location and repositioned at the front of the snowmobile, allowing independent operation from the handlebar controls. This segmentation enables the operator to pull the front skis while simultaneously controlling the throttle through the relocated trigger.
Solution Approach 2:
A push-pull cable serves as an intermediary mechanism connecting the remote throttle trigger to the throttle controller on the handlebar. The cable transmits mechanical force from the front-mounted trigger to the throttle controller, enabling remote throttle actuation without direct connection to the handlebar controls.
2Adaptability or versatility
If a remote actuator with pivotable member and cable conduit is used to enable remote throttle control, then solo operation is enabled, but the construction becomes complicated and lacks safety systems
Solution Approach 1:
The complex pivotable member and cable conduit assembly is extracted and replaced with a simple push-pull cable system. The invention removes the unnecessary mechanical complexity of pivoting members and conduits, retaining only the essential cable mechanism needed for remote throttle control. This simplification maintains solo operation capability while eliminating construction complexity.
Solution Approach 2:
The throttle trigger is locally positioned at the front of the snowmobile where it is most accessible during freeing operations. The trigger is placed in the optimal location for solo operators to reach and operate while pulling the front skis, without requiring complex transmission mechanisms. The local placement eliminates the need for intermediate mechanical components.
3Reliability
If the clamp is made secure to prevent accidental disengagement, then reliable throttle control is achieved, but the ability to quickly release in emergency situations is reduced
Solution Approach 1:
The clamp mechanism transitions from a static secure connection to a dynamic system with two distinct states: a locked position for reliable operation and a released position for emergency disengagement. The clamp incorporates a latch mechanism that maintains secure attachment during normal use but can be quickly opened by applying force to a release lever, enabling rapid state change between security and accessibility.
Solution Approach 2:
The clamp is pre-configured with a release mechanism that requires minimal effort to disengage. The spring-loaded jaws and lever system are prepared in advance to allow quick release when needed, so that in emergency situations the operator can immediately disengage the throttle trigger without complex manipulation.
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
Enables a solo operator to remotely control the throttle while freeing a stuck snowmobile, reducing the risk of injury and avoiding the need for excessive physical effort or digging, with a compact and safe design.
Implementation Method 1
the manually operable clamp is a spring clamp with manually squeezable levers for releasing the clamp
Implementation Method 2
a Bowden cable having a sheath and an actuator wire; a manually operable actuator at one end of the Bowden cable for pulling the actuator wire relative to the sheath
Data Source
AI summary
A remote snowmobile throttle control device is provided for use with a snowmobile having a handle bar with a hand grip at one end with a manually operable throttle trigger adjacent the hand grip. The device comprises a Bowden cable with a manually operable trigger at one end and a coupling elastic band for mounting on the handle bar at the hand grip and a manually operable spring clamp with jaws for attachment to the throttle trigger. A tether holds the actuator to the user and the mounting on the handlebar is arranged to break away from the throttle trigger in the event that the cable is pulled excessively should the snowmobile move too far relative to the user.