em1barns

I really hope they announce a v5 upgrade 😊

I meant tear down AND putting motor on a scale.

I guess we will need it to be teared down to tell, from eWheels’ website: What is the additional weight of the V8F over the V8? Just 2lb from the upgraded 1000W motor.

The additional weight (700g) cannot be explained just by the cell and pedal upgrades, so it likely comes with a new engine.

I would say this is more due to the fact that the v10 never felt like a 2000w wheel, I am afraid. In addition, v8f must have inherited much of the electronics and firmware advances from v10, making behavior more aligned. A more interesting comparison will be v8f vs 16s, to be fair.

@Seba, wait for ks18XL. It is likely they will propose a 1600wh version before year end.

Is it me or v5 and v8 batteries were enclosed into an internal plastic box, when v10 is just sitting in the shell as is?

Yep, I am 6´4’´ (1m90), and the first level is more than enough for me. The second level is overkilled and has too much play.

Theft is one of the reasons I bought an EUC. My first folding bike was stolen within 2 weeks in Brussels. I take my EUC literally everywhere with me: shops, theater, bars, under my desk at work, etc... obviously a decent trolley is key, another reason I lean more towards KS and IM.

For the story, while riding our EUC at night in the woods last weekend, a friend and I came accross a new EUC female rider. She explained to us she had purchased an electric scooter for daily commuting to her job, but negotiated an exchange with a V8 two weeks later as she thought electric scooters were too boring. The only cool usage I saw from an electric scooter was a father taking her young daughter (with protections, and low 10mph) to school. I did not take my children to school with their EUC before they were 8, and skillful at riding, emergency breaking, one footing, and already alert on roads when biking with traffic and intersections.

I think the issue with overheat is a global issue, where one has to look at the overall MOSFET / board layout / heatsink connection / heatsink size and position. Changing a single component in the system won't probably solve the issue. I also think they will not be able to fix it by firmware tuning, but I hope for them and buyers they prove me wrong. In any case, safety measures coming too soon is better than failure, so they had their priorities done properly.

They are not old components. LG MH1 batteries are already used on v8 and INMOTION is procuring batteries that can be sourced easily not to delay any production. The top end batteries used by some KS and gotway wheels have slightly higher capacities, but are sometimes in shortage due to high demand. As for the mosfets, it’s more a question of design and sizing. TO-247 are much more expensive, and beyond price, they may have undersized mosfet/heatsink for the system.

I did think about purchasing and cutting the v10 cover. Where did you buy it, cannot find it on AliExpress yet.

I did pull the trigger initially on v10F, but then I tried both v10 and ks18L, and found them to be very similar in size and behavior. Then I saw the early adopters reviews with overload issues, and had an opportunity to switch my order, which I did. KS18L also has some customers with issue, but the power part seems to be much more mastered. MsuperX and KS18L use T0-247 mosfet vs T0-220 for v10F. I am a big INMOTION fan, so I really hope they fix their issue.

The energy it takes to move the wheel is generally proportional to square of speed. So going from 20 to 25km/h takes 50% more energy, which is exactly what you are observing (12wh/km vs 18wh/km).