I think your coments on the Stereo Cube 140 is the best clips I have seen, very honest and straight forword from someone who is not a professional and has nothing to gain from any false reporting, you covered just about every question someone like me or anyone else would ask who was thinking of buying a Cube . Keep up the good reporting.

Chains on ebikes are the achilles heel especially shifting under load. Just another cost to factor in to emtb ownership. Loving your honesty. Maybe LBC's should offer a free chain with purchase. The sram powerlink is useful to keep in the backpack to get you home

Ditch chain oil, it turns to grinding paste. Get some hot chain wax on it, I've done 500 miles and the KMC chain checker tool says still good to go. I get about four rides before another wax dip. Make sure you back off the power as you change gear as not easing off puts a lot of twisting force on the chain.

I HAVE 1000 KM ON A CUBE 120 HYBRID, DIDN'T EVEN CLEAN THE CHAIN, JUST SOME WD40 LUBRIFICATION, AND IT'S GOING STRONG

I've had my chain snap a few times on my Cube. Shimano chain snapped within the first couple of hundred miles , replaced it with a SRAM eagle chain and I've snapped that twice. I now have a KMC ebike specific chain to try, e12 chain which is supposed to be heavier built. In the five years before this I never snapped an 11speed chain , I just think 12speed isn't that suitable for me on a ebike. Hopefully new KMC will sort that though.

I have the same bike but use a chain stretch gauge to check it’s health. Changing while under load is a sure fire way to do it. Will also wreck your cassette and chainring.

550 miles in for my 160 version of your bike, and no issues with chain. Cleaned and lubed after every other ride. May just have been unlucky with that chain. Could you remove the damaged link and fit a second quicklink? Try that before forking out for a new chain as only around £12 if running sram. I know exactly where you were when you started the film, and that's flat, so chain would have not been under stress when you shifted...

I have the same bike, ( different colour scheme) and my chain snapped after 3 miles, bike shop replaced it, and I did another 3 miles ( school run) and it snapped again. Turned out it was a bent front chain ring from factory, maybe damaged in transit, but supplier was great swapped front chain ring, chain and rear cassette out for hope stuff as no new parts available, on mile 75 now and now issues

Basic maintenance skills will help. Deep clean the drive chain after each ride, clean the jockey wheels, rear cassette and front chain ring. The bike is fitted with good components, however they need keeping clean. A simple chain power link fitted with a ten bob trail tool would have got you home. If I’m more than smile from home I take either a bum bag or slim rucksack with a spare tube, a couple of air canisters, plastic tyre levers, a couple of patches, power link, latex gloves, rear mech hanger and a couple of cable ties. Prepare prepare prepare, happy trails

Do you find you shift while pedalling with heavy effort? I only have experience in a pedal bike shop mechanics, but I found that chains tend to break faster when riders shift while under loads. I assume the motor will add even more torque and stress to the chain while shifting. This bike looks so promising as far as getting out and having low maintenance to keep it running. Hopefully the shop will be able to sort it out for you.

hi my friend i am having the same problem with the rear shocker knocking ,and Found that all bolts are tight but STILL IT KNOCKS🤔GRRRRRR only done two hundred miles

Just unlucky tbh. I’ve snapped two chains in 2 weeks on my road bike before 🤷🏻‍♂️ but the 3rd has lasted 1000s of Kms. You won’t need to change the cassette or chainring yet just the chain. 11 and 12 speed chains are thinner than 8,9 or 10 speed chains. Don’t be too down beat about it. I’ve just learnt to enjoy bike maintenance; I find the approach of little and often better than waiting till it all goes to pot.

Yikes, just ordered a 2021 TM 140....this doesn't bode well... maybe lighter pedalling while changing gear? Also keep the cadence going- don't apply to much force in a high gear, more revolutions in a lower gear? That way the pressure on the chain should be more linear?

I know what the FS stands for now!.

I think you could just remove a couple of links and attach a quick link instead of getting a whole new chain. The front sprocket and rear cassette should still be fine with only 500km on the bike. I did over 5000km during a bit more then a year with terrible maintenance of the chain so 500km seems far to short distance for it to be anything other then just a bad chain. I have gotten Wippermann connex chains recommended and they seems good and as chains is the only thing that company do I think they are more likely to make better chains then any of he companies that do everything. They also have really good fast links that are tool less to use. I use my Scott axis e-ride to commute to and from work every day so when I replaced the drive system I also got 3 chains that I am in the possess to do the initial wear in and then I use molten speed wax on them all at the same time.

My chain did the same u will need new cassette m8 for the rear good tip don’t put power in to pedals when changing gear it not good lift feet of power for 2 seconds before changing Especially when approaching hills thanks Andy Pilmore

Hi mate as previous comments i take a split link and tool out with me incase mine snaps as im 20 stone i reckon if tou take the broken link out fit a split link and take a link extractor and couple spare links out next time you go out and it should last you until you need to replace the sprockets etc

The chain should last longer than that. My electric haibike has done 1800 miles. I do give it a good clean and oil every 100 miles. Got to admit I don't ride my bike as hard as you do. 😂😂

Try kmc ebike chain I run two chains change after every ride try down grading to ten speed drive train bigger chain rather than 12 speed manual groupset ,cheaper to run trail bike Mx bike re cassette front ring if you keep eye on chain change before worn out cassette should last 600 mile when

do a Dyson hrust update

Unless you've got lots of excess wear on the teeth on cassette and front cog you should be good for a new chain its definitely gone out to soon it should have done easily double that , go for a quality chain.

Broken chain at that mileage is almost certainly due to clumsy gear shifting. Ebike's put huge torque through the chain, if you change up or down a couple of gears under too much pedalling power (e.g. on an uphill) you will be putting pressure against the side plates (because your chain is slanted across a couple of sprockets), this will cause the plate to separate and the chain to snap. This is your fault, not the bike's. And if you had a joining link and tool with you, you could have easily fixed it on the side of the trail and carried on for the day. Not fair to blame the bike or the chain, just shift with more mechanical sympathy and keep some spares with you. Similarly with the mech hanger, they don't bend themselves, it will be because you've hit the mech on a rock or root or something. Happens all the the time in mtb, just carry a spare and know how to change it.