Hi All,
Well, not the wife (this time) but her exercise bike ;-)
It's quite a nice Tunturi Ergometer 420 (she's getting ready for when we go out on our solo's / tandem this year) but it squeeks a bit now.
It uses a flat, toothed belt (like a cambelt) to drive the magnetic 'friction' flywheel and as that gently drifts against the guide / tension rollers it gives of a sort of rhythmic squeak.
The makers suggest the use of talc (on the drive belt ) and that does work but not for very long?
I believe the front toothed wheel is a sort of plastic / nylon as is the (smooth) tension roller but I think the rear drive gear / roller clutch is alloy.
Any tribologists out there?
All the best ..
T i m