BIC T-4M Idler Tire Replacement?

[Tape Echo]

There is a fantastic thread in AK's DIY section detailing how to open the unit and replace the belts, a difficult feat I've accomplished thanks to that info, but my FF and RW don't work at all and that apparently is due to a worn idler tire. I've not found any specific info on a replacement tire or any dimensions or recommendations to use a specific tire from another brand which just happens to work here. I know about Terry's but I don't even have dimensions from which he could work. Does anyone have any knowledge on this or a work-around to determining the dimensions (buying a few round belts in a particular size range and seeing what fits well and determining the required replacement tire size from there)...who sells inexpensive small belts so I could try this...

 

[dr*audio]

Try vintage electronics, see if they have the tire for the idler.
https://www.vintage-electronics.net/

 

[Tape Echo]

Thank you; they don't have one listed so I'll send them an email!

 

[Bob]

long time ago I messed with Nak tires, MCM has (used to anyway) a set of rubber tires
in various sizes. try them.

 

[dr*audio]

long time ago I messed with Nak tires, MCM has (used to anyway) a set of rubber tires
in various sizes. try them.

The MCM idlers are crap. They work for about a year and then start slipping.

 

[Tape Echo]

Thanks for the warning about the MCM parts; they were my first thought but they've apparently been purchased by someone so I didn't even do a search...dodged a bullet!