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I have Magic Charging too on my 2019 SRF (ODO 11000km). It depends heavily on the Power I have used and the Ambient Temperature the bike sits in afterwards. From only several % after smooth riding up to 20% magic increase after Autobahn. But I wonder if there is a relation with the last FW Updates/SOC Algorithm, because it appearded relatively suddenly for me and my bike still performs reasonably well on low SOC.
I also noticed Charging behaves different after the latest FW-Update when reaching 100% or charge target now. Charge Current does not ramp down continously as it did before but intermittend decreases and increases current (sometimes down to 0A), until it finally completes charging.
I really took care of my Battery from the first day on (except for VMax Autobahn riding sometimes). I Only let the bike sit with ~60% SOC in my dry and good temperated Garage. 100% charges only directly prior to driving, most discharges have been well above 20%. charge with max. 3kw only, never charged a hot pack or in direct sun, never charged a cold pack or in low temperatures...

To check SOH I just ran the bike to "0%" (165km @ 25°C), where it still accellerated to 60km/h. After connecting Charger, it directly started charging at 9% SOC and took 11kwh, so I assume the ~12kwh are somehow still available in my pack. Since then, magic charging seems a little less, only around 5% the last rides.

What would interest me is your experience with newer bikes or replaced battery packs after another several months and mileage? Keeps Magic Charging completly gone? And does Charging Current ramp down smoothly at target SOC?

Thanks and best regards,

Marco

Check the throttle: I once had limited power on my DS '14. Finally found out that it was caused by a faulty throttle (Magura 5k Poti, which seems to fail quite often). https://zeromanual.com/wiki/Unofficial_Service_Manual#Throttle

My SRF had a pulsing whining at slow speeds too, escpecially when recuperating. It got better with mileage. If acceleration itself feels smooth, I would not think it is a serious out of round issue. Also, in my case the whining was synchron with belt revolution, so I think it is the belt itself.
Align the Belt to not rub the rear sproket flange, as you allready did, and keep it on the lower tension limit. A little amount of silicone oil applied only to the Belt flanges also helps. Keep your Belt and sprockets clean and carefully inspect the sprocket for debris. One time I suddenly felt a strange High frequent Oscillation in the footpegs. I then found this to be caused by a tiny piece of crushed tarmac, that was trapped in one tooth of the rear sprocket..

This is not the case with Amazon B07L3MG3PQ.

But how does this symmetric, non height adjustable Pin-Stand fit, when the Pin holes on the fork have ~1cm height difference? Did you try it? Thanks!

Perhaps the wider and stiffer belt used on the SR/F contributes to the noise.

I think so, also the resonance behaviour of the real stiff rear swingarm (which I like in comparison to the S/DS) and the storage compartment seems to amplify belt noise.
It is not the noise itself that sounds cheap (I really like the tie fighter like sound while accelerating  ), it is more about the pulsating howl caused by tension variation while rotating under no load (which seems to be caused by not perfectly round pulleys).

Wash belt in mild soap and water.

I will try that. Thanks!

I just saw this video while surfing the net collecting new Info about the Bike - I have no relation to the one who took it 

There's been an interesting little development in my world since my last post on this topic...

I can understand your motivation. Nearly all ICE-Bikes offer more bang for the buck than the Zeros do, especially in the 20k price range. But that is no key argument for fans of electric propulsion. The best electric overall package is what I am interested in. Easy Scooter-like commuting in traffic and beeing able to extend the way home to a fast spin with the same bike is the appealing feature for me.
For me a valid SR/F-complain could be serious quality issues and lack of support/parts in a couple of years, like it seems to be with the early Zero models.
BTW - does anybody have news about the delivery progress? Real quiet the last days..

Similar story with me, same motivation.

I have a 14'DS, which I trade-in for a new SR/F. Besides Wheel Bearings (which I fixed with a CNC spacer and Heavy Duty Bearings) and a new throttle, the DS never let me down and was a very reliable workhorse for my daily commute the last 3 Years (and 24tkm).

It was my first step into Electric vehicles (besides Bafang Bicycle conversion). Was not disappointed and now I know, that my mobility future will be electric.

Upgrading the bike was simply due to get closer to a performance level, where my V-Twin allready is: Excellent Suspension, Dual Disc Brakes and sufficient Autobahn-Power (in exactly this order).

But I will keep my Fossil Bike too, because I will always love "old school" biking with shifting and the liveliness of a combustion engine.

And more important: Beeing able to drive several hours on a wonderfull Sunday in a rural area will take another few years to become reality with electric bikes.

Now impatiently waiting for the delivery. And a little anxious about the first (hopefully only minor) issues, a brandnew bike series will bring along..

best regards,

Marco