Commodore 1541-II floppy drive refurbishing

... or how to break stuff in order to repair it


A long time ago, far far away, in a distant galaxy, something happened but ...

... nobody knows what exactly happened because it is too fuckin far away.


So I have this Commodore 1541-II floppy drive that is a bit yellowed, missing serial cable and a power supply.

Obviously, I wouldn't be myself if I left it like this so when I finally had a bit of free time (seriously, just a tiny bit) I decided I'll refurbish it :)
The floppy drive was in a pretty good shape so I assumed (wroooong! :D) that it'll be rather straightforward and easy job. I just needed to de-yellow it and clean it off the old dust and other crap that it was covered with.

Disassembly followed shortly.

So far, so good. Cleaning was quick and easy. De-yellowing took some time as usual but worked like a charm. I've covered de-yellowing so many times already that I'll skip it and show you outcome photos instead.

Oh crap !

In the meantime, one of the folks on Lemon64 forums ( cheers guys ;) ), started a thread about failed part inside 1541-II. His problem was broken piece of a part that pushes a floppy disk holder into a working position.
It is that white thingy on a photo below.

Obviously, my idea was to 3D print it and since I had all disassembled, I could take some measurements without problems.
I've no idea why (actually I have an idea, I am an idiot, that's why ;P) but I desperately wanted to remove this thingy to make some additional measurements and to figure out how it is mounted. I've started to pull it strongly ... then I pulled it with pliers ... then I farted (lol) ... aaand ... then it broke.
I was like ...

So, instead of simply helping the other guy with creating a model for a 3D printer, I've ended up with a real problem lol :D
Luckily, I already had everything I needed to start drawing a model.

Since it is quite a small part, it is always a good idea to print few of 'em at once, especially if you don't have a cooling fan installed on a 3D printer.
I've loaded a model into Slic3r and set up parameters.

Few minutes later I had six printouts ready for testing.

Printouts needed some post-processing, like cutting off a brim and a bit of sanding.
After that, I've pressed it onto a shaft and secured with a small injection of an epoxy glue to hold it in place.
Here is how it looks mounted.

Phew, it worked :D
For all those with similar problem, HERE is an STL file for your 3D printer ;)


Just two things left to be done.
First is, a serial cable which I've made out of a UTP cable

Second is a PSU for a floppy.
This floppy drive uses two voltages 5V and 12V so that was quite an easy task. As usual, I've used a typical 12V PSU and added a step-down DC-DC converter to get 5V, shrink-wrapped it and ... YAY, IT WORKS!.
I already did similar hax in the past - HERE for example.

Whole above resulted in a rather nice looking and fully working 1541-II floppy drive setup for my C64 :D.

See ya next time ;)


Chaos is your redemption .... better run .... better hide

I come from Internetz :>