Nice comparison result, i am curious how does CEF50 geometry in term of downhill compare to your Kenevo SL. My initial choice was Trek EXE or Kenevo SL but end up getting CEF50 because bike industry price are at peak point and its heading down now soon.
I'm also agree with you. For me the M820 is a perfect motor to build an 'light' bike for heavy rider (with a few physical capital anyway). but what is your opinion in regard of battery ? do you think 700 is useful or 500 enough ?My experience with the M820 and the CEF50 has been different.
I do appreciate that the CEF50 is a versatile trail emtb. But I'm finding that the bike gets used more for power hour sessions or group rides instead of Allmountain excursions which would favour an ebike with a bigger battery.
I have no doubt that if someone raced emtbs with similar geometry & components uphill and were all using different full powered motor systems from Bosch, Shimano, Brose, Yamaha, Polini etc, the M820 'might' fall short in terms of battery capacity. But in those circumstance, typically the M510 would be the appropriate motor system to compare.
Moreso I enjoy the power-to-weight performance of the CEF50 and M820 system in terms of providing support consistently, especially if the rider isn't a featherweight cross-country racer.
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Whilst (in my opinion) I still classify the CEF50 as a full fat/full powered emtb, it isn't lost on me how many riders who I've borrowed the bike too (who wouldn't classify themselves as featherweight either), who have all explained that this is the natural progression and innovation riders wanted 3years ago. Not the 'Superlight' category which barely provides any assistance, support or favourable range unless the rider is lightweight ans are incapable of keeping up with full-fat/full-powered ebikes. Rather, an ebike which weighs less, performs like a full-fat/full-powered ebike, implemented to a frame with up to date geometry and 4 frame sizes to choose and doesn't cost no where near a mainstream emtb of a similar weight.
For me and a lot of my friends who i build for, this bike represents a true turning point for getting more bums on saddles who don't have disposable incomes. But don't want a 25kg+ emtb to which could pull your back out by lifting it over an fence gate etc. Riders who want something (dare I say), mainstream which doesn't penalise you for being heavy, whilst capable of offering a good amount of power/support/control when being used.
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600miles and no issues to speak of (unless you count a snapped chain and using insolation foam to silence the cable rattle within the downtube).
As much as some riders and members may have a hard time believing it. But
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This is the true ebike of the year 2023. The true people's champion for electic mountain bikes.
No regrets everyone. Thanks again all of you for recommending this fantastic frameset
Which model of 36 are u using for your KSL. If your its current model 36 performance or factory with air release button at the back of lower leg shoulden be much different since yiur body weight only 80 plus kg. Both 36 and 38 has a similar smooth feedback or planted.
In a months time will you be able to tell us more about this motor, that I'm hopeful is the m620 +10. It's been very quiet since it's announcementPersonally, the M820 is becoming one of my favourite Bafang motors. (Maybe No.2). No.1 spot remains M620. But that could change in a month's time
You mean the M630 Motor right?
www.emtbforums.com
Ahhh...the M630, thanks for clarification.You mean the M630 Motor right?
Yes, I'll be covering the system in 2024Bafang M630 Thread
Fresh off the press and unveiled at the 2023 Shanghai Cycle Show The "M620 Killer!!", kicking out 250NM of peak torque. Surely, no drivetrain is designed for a motor like this!? ......oh!!!! Well, I guess it was inevitable that Bafang would capitalise on building another powerful motor. And...
I use the old Sram EX1 8 spd. drivetrain to handle the high torque and give longer chain wear. It's my understanding that the M620-160 Nm was made for cargo, street ebikes more than traditional trail, E-mtb. But makes sense for fatties like mine that go in sand and snow well, as their more higher torque conditions
).
, with good power
, and greater range
!
How long do yo ride for, an estimated average? And ft gained also on average.
On average about 16-20 miles. 1.5-2 hrs.
You’re reading my mind.On average about 16-20 miles. 1.5-2 hrs.
My terrain consists chunky foothills, short, steep ups out of washes and ravines, and soft, loose rolling flats.
Quick-burst power for my area mostly. Nothing huge like the Alps or Rocky Mtns or coastal mtn ranges like on the west coast of the US. Big, mountain climbs, when I go to California to ride, I'd need more battery on the CEF50 for those long, protracted, adventurous ascents! Or I would just ride my M600 with the 1000 Wh battery.
That's why the CEF52 would be attractive...elevation gain with the EP8-85NM. Like you said more efficient for the power tradeoff. And you only gain a pound moving up the full powered motor with 720 Wh battery! But then if the EP801 is really that efficient, you wouldn't need the extra battery extender (2-3 lbs).
Any update from Linda on this? I’d heard that they’re waiting on batteries.
Even if u have the battery, i think they dont have the remote or cable too. They only has the motor, my information was last months
Not from Linda. All my info was from Eason Li at SZZS.
www.emtbforums.com
You should not have any problems if u wanted to mullet as its BB height are pretty high 360mm and if u convert it mullet u be getting somewhere 342 bb height if u are using 160mm fork. As for ur float x will fit perfectly. If you thinking for a new frame, contact linda to v2 cef50 as its coil shock competible
I’m running a float x an extra large
That may be true for instantaneous peak power, since the motor controller will have peak current limits. I would wager a guess that for the sake of production efficiency, the 36v, 43v, and 48v versions of the m820 motor are exactly the same with just different firmware between the 3 for voltage cutoff and power limits to protect the battery below certain soc levels. If that is true, 48v packs will probably see longer durations of peak power on the m820 due to not hitting thermal protections on the motor and motor controller. I^2r losses between 36v and 48v are very significant since current is squared. Say for a given 500w peak load, you would have to dissipate almost double the heat load at 36v with the same metal case compared to a 48v system. Again, this is with the assumption that the bafang motor construction is the same between 36v versions and 48v versions.
I just cant imagine the volume is there to optimize for 48v. If there are no weight deltas between 36v and 48v, they most likely did not imo. China usually designs to the lowest common denominator to hit a price point.
Agreed, that is why i said they did not optimize for 48v, which would be lighter.
You meant volume of sales.
Finally, a $400 wireless remote dropper that plugs into the motor battery? It's OEM currently, but will be available next year for general retail. 
ebike-mtb.com
It will be great if bafang integrate sram AXS or shimano automatic shifting into their system. I will definitely get it.Here it is peeps!
How would this likely wire into our current CEF50 frame configuration?
LIMOTEC EP1 dropper post first ride review – the first dropper post especially designed for e-bikes
Die Limotec EP1 ist die erste elektrische Sattelstütze speziell fürs E-Bike. Wir haben sie für euch getestet.
Nah, not me. I've seen both. They work as advertised. But riding techy uphill, I'd always want manual. I don't think most mtbers would find it useful enough to pay the extra costs and have that extra thing to troubleshoot it if/when it goes wrong.
If riding on our regular trail, regular shifting should be fine but i always encounter problem with new trail, especially during race, when i dont have enough practice run.
What about the dropper, my original question?
