Walkman Belt reference

This is a much awaited thread...thanks for starting it I would advise members to follow these guidelines with caution as final performance without wobbly sound (wow & flutter) requires a balance between the belt size (snug fit) and belt tension ( smart movement without exerting too much force)

wm-10/20/30 10II , F10/20/30/10II, w800, F15/F13 and F65 - 49mm dia 0.7mm thick

DD9 22mm dia 0.9mm thick

Panasonic RQ-SX50V (1998) series: Panasonic RDV0037 Capstan Belt (1) and Panasonic RDV0038 Capstan Belt (2)  24mm and the second one about 32 mm. , 0.7mm

I have an excel file with belt sizes and my comments about replacement process. I can update the list with information from another users and put a new version to this topic once a month.

Panasonic all RQ-S series and early RQ-SX series: ID64 0.6 mm belt

Panasonic later (by cca. 1995) RQ-SX series: two belts - ID22 and ID30 mm, 0.5 mm thick. Can be used 0.6 mm instead, but do not use 0.7mm or thicker - it has negative effect to the audio quality

Sony WM-EX808 - ID61 mm and 0.6 mm thick

Sony WM-EX/FX909, WM-EX999 - ID28, 0.6 mm

Please, do not use 0.7 mm belts with most Panasonic and Sony models, as the groove in the metal wheels is usually 0.7 mm wide (the same as belt). Better use 0.5 or 0.6 mm, in the worst case 0.8 mm.