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+--- Thread: Card reader gummy wheels (/thread-18840.html)
Card reader gummy wheels - Matt Agajanian - 09-17-2022 08:25 PM
Hi all.
Given the fact that they wear out and decay along with becoming melted and sticky, was there a durable and longer lasting resource, perhaps metals, that could be used to design the wheels instead? Yeah, using metallic alternatives has its own drawbacks such as oxidation.
RE: Card reader gummy wheels - Maximilian Hohmann - 09-17-2022 09:19 PM
Hello!
(09-17-2022 08:25 PM)Matt Agajanian Wrote: ... was there a durable and longer lasting resource, perhaps metals, ...
Since many many many years sticky gummy wheels are being replaced with common off-the-shelf O-rings usually made of poybutadiene. They will probably outlast every other component of the calculator (and it's owner) while costing only a few cents (either Euro or Dollar) a piece.
Replacing the gummy wheels with metal is probably not a good idea because this will put a lot of wear on the cards, which, as you write in another thread, are on very short supply.
Regards
Max
RE: Card reader gummy wheels - Matt Agajanian - 09-17-2022 10:03 PM
(09-17-2022 09:19 PM)Maximilian Hohmann Wrote: Hello!
(09-17-2022 08:25 PM)Matt Agajanian Wrote: ... was there a durable and longer lasting resource, perhaps metals, ...
Since many many many years sticky gummy wheels are being replaced with common off-the-shelf O-rings usually made of poybutadiene. They will probably outlast every other component of the calculator (and it's owner) while costing only a few cents (either Euro or Dollar) a piece.
Replacing the gummy wheels with metal is probably not a good idea because this will put a lot of wear on the cards, which, as you write in another thread, are on very short supply.
Regards
Max
At least there’s another option.