Regen braking: worth it or not?

@voltbike_val · Sep 19, 2026 · 3.1k views
Difficultyeasy

On a direct-drive hub motor with a controller that supports it, regen recovers 5 to 10% of your energy on hilly rides and saves brake pads dramatically on long descents. On a geared hub motor it does nothing (the clutch freewheels). On a mid-drive, nothing. It also puts reverse torque on the axle, which is why two-sided torque arms exist.

If you are choosing a kit for a hilly city, a direct-drive motor with regen (Grin's setups, or the big 1,000 W DD hubs) is worth considering. For most people: not a reason to pick a kit.

#regen#direct-drive#hub-motor#ebike

71 💬 12 comments

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Great find. Did not know this channel existed.

11
@rtr_watch 1mo ago

Nice. What did the whole thing end up costing you?

10
@voltbike_val OP 1mo ago

Yep, same here. The second time is always faster.

7

Nice. What did the whole thing end up costing you?

10
@stitchfix_sue 1mo ago

Small addition: wear eye protection for the part where you pry it. Learned that one the hard way.

9
@voltbike_val OP 1mo ago

Yep, same here. The second time is always faster.

8
@voltbike_val OP 1mo ago

Great find. Did not know this channel existed.

9
@voltbike_val OP 1mo ago

Yep, same here. The second time is always faster.

7
@rtr_watch 1mo ago

The embedded video is clearer than the official service manual, which is a little embarrassing for the manufacturer.

7
@voltbike_val OP 1mo ago

Unplug it. Always. Takes two seconds and the worst case otherwise is a trip to the ER.

2
@benchtop_bea 1mo ago

Nice. What did the whole thing end up costing you?

4
@voltbike_val OP 1mo ago

Glad it helped.

1

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