Lately I have quite annoying loud tick sound coming from somewhere in the transmission system.
-Does not happen all the time.
-If it is happening and you stop pedaling for half a second and then continue it is most of the time gone.
-I can actually feel the ticking on the pedals.
-Happens ± for every 180 degrees of turning of the pedaling wheel.
First I thought it was the freewheel then I thought it where the pedals (original ones), now I don´t know anymore.
Well it [size=150]could[/size] actually come from the freewheel.
I also experience sometimes a loud tick sound that I know comes from my “badly sealed” freewheel especially after having ridden my Strida in the rain. I will not claim it appears every 180° of crank revolution but it only appears when I apply force on the pedals (well yes, obviously every 180 ° ).
The sound comes from the ratchet mechanism that engages in the freewheel with some delay. When I stop pedalling and then pedal again then the sound would eventually disappear because the ratchet engages on a different place.
The solution that works for me is to put some fine oil between the fixed and the rotating part of the freewheel. The better solution is to replace the freewheel, but considering the ratio price/shipment cost, I delay my purchase untill I need something else from Vanmoof.
A few minutes ago I’ve unmounted the outer ring by removing the six small Phillips bolts, but the ratchet mechanism can’t be seen (like at the second of Amuro’s pics of this post: Very satisfied with alloy freewheel page 2)
With good working seals on the freewheel you would not be able to lubricate it without taking it apart. But … as my freewheel swallows water and dirt , there is no reason why it wouldn’t swallow fine oil either
So I have used WD40 and the noise was gone for some weeks but WD40 is not a real lubricant, so I now use fine oil (the one your mother would use for her sewing machine ): I put 10…20 drops of oil between the fixed and the moving part of the freewheel:
I also tried motorbike chain lubricant, which is liquid when sprayed but gets sticky when the solvent has evaporated. It did not work as well as the fine oil, probably because the chain lubricant was still too viscous to penetrate the freewheel properly.
Even if freewheel and the inner ring (also held in place by six phillips bolts) is removed the pawls are still not reachable - only bearing balls could be seen:
I guess a pin wrench is required for further disassembly.
An update, I tried to use some fine oil to get rid of the noise but it didn’t help.
I also started to notice a rythmical ticking, much faster than one freewheel turn.
I really think something is broken inside the freewheel.
I now also start to notice that when I set off the freewheel skips multiple times. I think the teeth inside the freewheel are worn out or even broken, so under high force it needs to ‘find’ the still good teeth (that can handle the force) to get going.
My explanation is maybe not clear, maybe somebody that understands it and has the proper technical terms can translate it.
I’m using my Strida SX now for 11 months (so still in warranty). Isn’t that a bit quick to wear out a freewheel?