Revision as of 20:53, 23 June 2024

A wheeled version of the Universal Track Unit, where wheels can be added on top of the tracks simply via a recessed accessible shaft

Links

2017 version of the self-contained Universal Wheel Unit - wheel-based only, works and has been interchanged between LifeTrac v16, LifeTrac VII, and LifeTrac VI - as well as the Microtrac proofs of concept [[MicroTrac Prototype 1, MicroTrac Prototype 2. Universal wheel unit was not used in production because of its size and thus requirement for the non-symmetric track design. Production version (in house use) of MicroTrac v17.10 utilized dedicated smaller motors with sprocket mounted directly to them, without the frame superstructure.
- In 2023, LifeTrac VI is in use. It appears that the key came loose and Universal Wheel Unit would need to be disassembled to replace the key. This may be done in the future, but right now (2024) the tractor is operating with 2 wheel drive with the rear drive disconnected. Fix job is estimated to be 4 hours - removal of Universal Wheel Unit, wheel, shaft removal, replacement of key - then reassembly. Lessons - this type of deep repair must be streamlined. Further modularity is required, so from 2024 onwards we are looking at one single motor size, chain geardown to with 120 Chain

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 *[[LifeTrac_Construction_Set#Tractor_Construction_Set_in_FreeCAD_-_2017|2017 version of the self-contained Universal Wheel Unit]] - wheel-based only, works and has been interchanged between [[LifeTrac v16]], [[LifeTrac VII]], and [[LifeTrac VI]] - as well as the Microtrac proofs of concept [[[[MicroTrac Prototype 1]], [[MicroTrac Prototype 2]]. Universal wheel unit was not used in production because of its size and thus requirement for the non-symmetric track design. Production version (in house use) of [[MicroTrac v17.10]] utilized dedicated smaller motors with sprocket mounted directly to them, without the frame superstructure.
-**In 2023, LifeTrac VI is in use. LifeTrac VII was a proof of concept model,
+**In 2023, LifeTrac VI is in use. It appears that the key came loose and Universal Wheel Unit would need to be disassembled to replace the key. This may be done in the future, but right now (2024) the tractor is operating with 2 wheel drive with the rear drive disconnected. Fix job is estimated to be 4 hours - removal of Universal Wheel Unit, wheel, shaft removal, replacement of key - then reassembly. '''Lessons''' - this type of deep repair must be streamlined. Further modularity is required, so from 2024 onwards we are looking at one single motor size, chain geardown to with [[120 Chain]]