Cord to Cordless Circular Saw Conversion 220V to 20V [Rewinding]

Rewinding Information
- Copper wire 0.95 mm
- 12 Commutator bar
- 12 Stack teeth armature
- 10 turns for each commutation bar
Dc motor information
- Voltage 20V to 40V
- No-load current 6.5A (20V) 130W
- Start current 18A (20V) 360W
- Motorbike starter permanent magnet part
Key moments
00:04 circular saw disassembly
00:42 circular saw gear box Disassembly
01:14 circular saw motor removal
01:46 circular saw all parts show
01:57 plastic parts cleaning
02:16 armature disassembly
03:02 old commutator bar removal
03:20 old coil removal
03:44 new commutator bar Installation
03:55 armature rewinding process
07:46 armature short circuit checking
07:52 commutator bar continuity checking
08:12 armature gluing
09:33 armature balancing
11:09 permanent magnet installation
12:27 first test new DC motor with 20V
12:36 battery adapter installation
13:50 metal parts painting
14:31 gearbox installation
16:14 finish look
16:20 new circular saw weight
16:30 rpm measurement
16:40 power measurement
17:03 cordless circular saw cutting test

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Gear Show