Levo Gen 3 Clunk from motor on Specialized Gen3 levo

[Repsol]

just wondered if anyone else is experiencing this on their levos, mines the Gen 3 comp carbon.
There's a clunk which I don't recall noticing before coming from the motor which is felt through the crank arms.
It is when you stop pedaling when in either eco, trail, or turbo, it doesn't do it when the motor is switched off and pedaling, so it rules out drivetrail ect.

It's when you stop pedaling there's an instant clunk felt asthough the motor hasn't switched off the power instantly and there's a split second delay like an overrun of the motor still delivering the power to the crank. I've checked the chain and there's no wear. Is this normal? It's not a really loud clunk but you can definitely hear it and feel it through the Pedals. It's not as noticeable when in micro tune and set at 10% Only way to describe it is it's something you'd expect to happen if there was play in the rear cassette.

 

[akira]

No clunk from mine when I stop pedaling.

 

[Repsol]

It's difficult to try explain it, it's between a slightly clunk or knock immediately after stopping pedaling. It's simular to what you get when back pedaling on a normal bike then quickly rotate the Pedals forward whilst stationery, you get that clunk when the ratchet of the rear cassette engages against the internal ratchet.
It's when the motor and crank immediately stop, its asthough it's caused by the motor running on for a fraction of a second.

 

[DS.]

Sounds like they put a SL motor in your gen3 Levo

 

[surflj]

No issues on mine.

 

[dfkenevo]

Check all the motor bolts, I had the same thing on my ‘19 Levo and the motor was a bit loose, tighten the bolts problem solve, clunk went away.

 

[Repsol]

Check all the motor bolts, I had the same thing on my ‘19 Levo and the motor was a bit loose, tighten the bolts problem solve, clunk went away.

Cheers will have a look at the bolts, the bike is under warranty and yet to have its first service, I noticed that the rear cassette too has sideways play. I don't think this is causing the problem as its definitely coming from the motor.

 

[squeegee]

maybe try setting acceleration response to 0% and see if it makes a difference

 

[Jersey Skier]

Cheers will have a look at the bolts, the bike is under warranty and yet to have its first service, I noticed that the rear cassette too has sideways play. I don't think this is causing the problem as its definitely coming from the motor.

Hard to narrow down noises when you know there are other things loose on the bike. It's just a waste of time.

 

[Repsol]

maybe try setting acceleration response to 0% and see if it makes a difference

Yeah thought of that too as it doesn't do it when in micro mode set at 10%. Will give it a go next time I'm on it. Think acceleration and shuttle were set at 80%

 

[jwcarver1]

I have the same clunking sound as well. My wife has the same bike as well but no clunk. I took it to my dealer for the 90 day inspection and they said they could not duplicate the sound. I went there today and instantly showed them. While they had it they downloaded the latest software and that it should take care of it. Well it didn’t! They started a warranty claim and will speak with their rep.

 

[Rosemount]

It could be the sprag bearing not releasing . Spesh say .2 of a second over run is normal. My motor was over running a second or two .Contacted Spesh they said it could be the drive train. So I replaced it didn't make any difference ! Eventually the motor died and wouldnt drive at all. Warranty for new motor.

 

[Cdillardktm]

No clunk from mine when I stop pedaling.

I have the same clunk when I turn my bike on then pedal. Now I'm pedaling then turning the bike on in trail mode and the clunk goes away. No more clunk.

 

[alkis]

Watching this... my bike did the same first time today. I've had it for less than a month! Less than 150km on it

 

[alkis]

I have the same clunk when I turn my bike on then pedal. Now I'm pedaling then turning the bike on in trail mode and the clunk goes away. No more clunk.

I can happily confirm the same here !! Did a small 18k ride yesterday. Quite hilly. All good, NO clunk!!!