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good question, I am not overhauling drive units myself so that would be a good question for a repair center.

I've indeed read that, at our OEM side we do not have the dual batt option at this moment. I've asked around at Bosch. let's see why we do not have this option at this moment.

Crankshaft clutch/freewheel is not engaging. Driveunit will need an overhaul.

in this case he is refering to the 2 button controls underneath the bar tape on a Creo (dropbar bike) S216800011.

Matt has pneumonia...

underneath the bike

just checkt some other bikes, mix of Bosch Bes2 and Bes3, Shimano. all had a little axial play on the chain/belt ring. Yamaha has indeed a bit more free play.

Correct, did see that one. a few old colleagues of me are sales reps at R&M, they told me that the supercharger was out due to no dual batt support on bes3 (which also is the case for our bikes which came with dual batteries prior to bes3) and that they had to rely on an RE for more Wh. BES3...

BES3 = smart system/ Gen5. BES3 has a RangeExtender option

Both, the most play is oure axial, when pulling the chainring crosswise also some play but nto as much as pure axiale.

supercharger is out cause no dual battery setup for BES3 and RE for Bosch. demand was also not that big to retain an extra sku.

just checked 9 bikes with this DU, they all have the same amount of free play of +/- 1mm sideways.

Weird, I cannot find a round connector cable indeed, just the diamond shaped ones

100% true, but in most cases when you are in between two frame sizes you can over come most with stem angle and saddle position. And yes I personally have a very weird position on a bicycle... Both knees are worn out (since when is was 15) so I sit in a more tri-hip position and overstretch my...

The one that should work for this system would the 5271536 which can order at a Trek dealer

If the 46 fits better than get the smallar one. The "problem" with powertube frames is that the downtube has a minimal length. So for our brands I do now that the seattube angle and hight are the ones which are different for the smaller frame sizes and some other brands share 2 or 3 framesizes...

Most important factor is the reach, so the distance between the saddle and the handlebar. So I wonder why the 46 felt better than the 53? You could alter the position a bit by moving the saddle to the front and set the stem (part between fork and handlebar) a bit more upright so the handlebar...

In Europe we go for Cyclus, Unior or Hozan. And if not in your price rangen something from Birzman, XLC or BBB could do.

Would be a tool like this for the spider lockting https://www.bike-components.de/de/Cyclus-Tools/E-Bike-Motor-Lockring-Werkzeug-Snap-In-SN-85-W-fuer-Bafang-p90109/ And a JIS compatible crankpuller like this https://www.bike-components.de/de/Shimano/Kurbelabzieher-TL-FC10-p6806/ Keep in mind...

This is what the chain ring carrier looks like