Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

Mechanical Specifications

Commutator Diameter:
Standard 29.2 mm (1.15 inch)
Minimum 28.6 mm (1.13 inch)
Brush Length:
Standard 16.5 mm (0.65 inch)
Minimum 7.0 mm (0.28 inch)
Brush Spring Force:
Standard 20.6 N (4.62 lbs.)
Minimum 6.87 N (1.54 lbs.)
Pinion Gap 0 mm (0 inch)