Old new pedelec user

[Dotard]

Hi everyone.
I'm just into my 8th decade and a couple of months ago bought a Cube Kathmandu. I've done about 600 miles so far and I'm delighted by the experience. This is the first bicycle I've owned for more than half a century - although I've owned numerous motorbikes. I have a few things to recount but for the present I'd really appreciate an opinion on something.
Yesterday I cleaned the bike and de-greased chain and sprockets prior to re-lubricating. It's the first time I've taken a close look at the sprockets although I've cleaned and re-lubed a couple of times previously - the bike was also serviced by the supplier at 300 miles.
From previous experience (including with tracked vehicles which essentially have a similar chain and sprocket track system) I was shocked to see the irregular and widespread wear on the sprockets. In the case of the lowest gears I have seldom even engaged them given that my cycling is predominantly on level hard surfaces. I have contacted both the supplier and the agents for Cube but have yet to receive a response (I've more to say on that in due course).
Opinions greatly appreciated!
Roy

 

[christob]

Welcome to the site, and to ebiking... (I don't have any thoughts to chime in, regarding the sprockets...)

 

[harryS]

Yes, that particular freewheel was machined pretty poorly. I looked at our ebikes, and some have equally poor work. The worse are the DNP's. a $30 item for me, with a reputation amongst road bikers for mis-shaped teeth and rapid wear. The Shimanos are OK, and I surmise these are $15 parts. The LG is good. The BBS02 is the original part on a 2006 Diamondback, converted to mid drive for 500 miles, which would increase the lead on the teeth, but they seem OK .

As long as there is no slip or chain jump. it doesn't bother me.

And freewheels are not expensive.

.

 

[Dotard]

Thanks! Well, I would expect, on a new machine of any kind, this kind of conspicuous manufacturing fault to be completely absent. So much so that I have paid no attention to the sprockets until I took a close look. Am I to understand that this is considered "acceptable" on a bike that I paid £2300 for? Maybe that's why the supplier has so far made no comment. Which seems to be their SOP as far as their customer support is concerned. Getting very close to name and shame time - not that it usually makes much impact.
Roy