I guess that it is a Citizen W1D drive. The old belt can be replaced with a cheap cassette recorder belt. Something like this: http://www.ebay.co.uk/itm/AUDIO-CASSETTE-SQUA … YMAAMXQEgpTFf~W

My drive was the Citizen W1D FIL, and I managed to fix two of them, in two different laptops (Siemens PCD-4ND and TI 4000m). I don't remember the exact dimensions (you can measure that; remember that the new belt should be tighter), but I bought 66,67,68,69 and 70mm x 1.0mm square belts and one of them fitted. The original belt was flat, not square, but that doesn't matter. Just be really careful when disassembling that floppy drive, don't break the heads etc.

I replaced mine with a rubber band 🤣 spun up perfectly but unfortunately the heads got misaligned so now it works intermittently 😐

I remember back about 15 years ago tracking down a shop that had belts like this to repair a car cassette player. The hard part (even then) was finding such a place, but once I got referred to the right shop they quickly found a belt that fit.

If you know of any electronic repair shops that still exist, maybe they'd have a collection of small belts and be able to help you out, or be able to point you somewhere. This is something they would need to be able to deal with at least occasionally I think.

Otherwise, coming up with some measurements and ordering a variety of possible candidates like adalbert suggested is probably the way to go.

I repair 80s boomboxes and you can still get belts, you can find quite a bit on ebay, I happened to just fix a drive like that in my NEC pentium mmx laptop. You want to look for something like a SCY7.5 belt, that's 7.5 inches and Ys are the thinest. A 7.8 might be ok too.

Ah yes, I remember that number.

Does anyone think that my drive is malfunctioning because I'm using a rubber band and therefore the speed is not constant or too low?

Thank you very munch, I'll check that and I will give you a feedback if you want

Sadly the last electronic repair shot that I knew was closed a few years later 😒

keenmaster486 wrote:

Does anyone think that my drive is malfunctioning because I'm using a rubber band and therefore the speed is not constant or too low?

That might be an issue, I also tried rubber band at first and I was getting similar symptoms (i was able to boot into DOS and turn on cable transfer program after multiple tries), but head misalignment is also possible (it happened to me too).

The best solution wold be to use a "modern" laptop floppy drive, for example manufactured by Sony, but they don't work with that interface ("drive busy" light is constantly on), i tried that. Some day I will try to check pinouts of both drives and maybe it would be possible to create an adapter, solder a jumper, cut a trace or do something similar which will allow us to get rid of those obsolete belt-driven floppy drives and use something that works reliable.

http://www.futurotec.com/ebay/citizen-w1d/ima … en_w-series.pdf here are some informations about compatibility, something about pin 11 is mentioned here.

//update:
http://www.torlus.com/floppy/forum/viewtopic. … =1863&view=next
here is something about pinout of that drive

Yes a rubber band will not work correctly. The belts are pretty common online, I'm sure you can find one, they aren't anywhere near as stretchy as a rubber band.