Technical REAR WHEEL NOISE LIKE A MAGPIE OR TOAD!

[ClassicFiat500]

Good news, (i think) jacked the car up & couldn't here the creek, however i may be getting a little paranoid with the wheel off & revolving the hub I can hear a clicking noise emitting from the g/box or the drive shaft or if I push the car on a flat surface, I have noticed if you look at the photo below the drive shaft couplings where the spring holding the rubber gaiter is, it is very close to the sub frame, so maybe a stone or piece of grit was caught in the space.
My next question, is it normal to hear a clicking noise if pushing the car ? At least the Toad & Magpie noise have stopped
Many thanks to everyone again. Barry

 

[Uaglio]

Now that you’ve posted clearer photos i can see your unique drivetrain and brake setup. Those rubber CV boots look awfully tight inside the box frame, and it’s possible that the metal tie holding them on is ticking against it. You might try to peen it down if any of it is sticking up, or trim any excess wire. Basically I’d keep looking for anything out of place that ticks against something else as the wheels and axles rotate. If it is something like that, then it will certainly keep clicking any time the car is rolling. Tug at those brake calipers too and make sure their bolts (looks like the bolts are on inboard side) are not loose (the floating part of the caliper will feel a little loose because it has to move along the slide pins when brakes are applied, but the main caliper part should be bolted tight and sometimes when they are loose, braking action can make it shift slightly and cause ticking of some other part against the rotor or wheel hub. By the way, wheel hub clearance is also quite tight there.) If your problem is inside the gearbox, you won’t detect it from outside, so rule out anything obvious externally first.

 

[ClassicFiat500]

Now that you’ve posted clearer photos i can see your unique drivetrain and brake setup. Those rubber CV boots look awfully tight inside the box frame, and it’s possible that the metal tie holding them on is ticking against it. You might try to peen it down if any of it is sticking up, or trim any excess wire. Basically I’d keep looking for anything out of place that ticks against something else as the wheels and axles rotate. If it is something like that, then it will certainly keep clicking any time the car is rolling. Tug at those brake calipers too and make sure their bolts (looks like the bolts are on inboard side) are not loose (the floating part of the caliper will feel a little loose because it has to move along the slide pins when brakes are applied, but the main caliper part should be bolted tight and sometimes when they are loose, braking action can make it shift slightly and cause ticking of some other part against the rotor or wheel hub. By the way, wheel hub clearance is also quite tight there.) If your problem is inside the gearbox, you won’t detect it from outside, so rule out anything obvious externally first.

Great thanks for your input & help, yes the gap is very close, when I looked at the gap & knowing its revolving it only needs a very slight deviation on the drive shaft, I think your remarks are correct.
All the best Barry