honda305.com Forum

Vintage Honda Owners, Restorers, Riders and Admirers

Latest Registry Entry
1965 Honda CP77 — Ulsan Metro City, Rep. Korea
Restored with original parts — Owner: J. Doe

specs of the stock CB72/77 coils?

Points Based Ignition | Electronic Ignition Upgrade
Post Reply
bbraun
honda305.com Member
Posts: 42
Joined: Mon Jun 25, 2007 2:55 pm
Location: CT

specs of the stock CB72/77 coils?

Post by bbraun » Mon Jul 18, 2011 8:01 am

What is the resistance of the stock coils?
I'm looking at Sudco 12V, 5 ohm coils as replacements.

Thanks; Beth
Beth

'64 CB72
'64 CB77/Yetman race bike
'65 CA77
'63 CA72 project
'65 CB160 race bike

'63 CA95

a number of other '60s Hondas
Top
User avatar
G-Man
honda305.com Member
Posts: 5681
Joined: Wed Mar 25, 2009 5:17 pm
Location: Derby, UK
Contact:
Contact G-Man

Post by G-Man » Tue Jul 19, 2011 9:02 am

Hi Beth

Just put a meter across three coils.

Readings: 4.1, 4.5 and 4.9 Ohms.

You should be OK with 5 Ohm coils.

G
'60 C77 '60 C72 '62 C72 Dream '63 CL72
'61 CB72 '64 CB77 '65 CB160
'66 Matchless 350 '67 CL77
'67 S90 '77 CB400F
Top
bbraun
honda305.com Member
Posts: 42
Joined: Mon Jun 25, 2007 2:55 pm
Location: CT

Coils

Post by bbraun » Tue Jul 19, 2011 9:28 am

Thanks so much, G.
Beth
Beth

'64 CB72
'64 CB77/Yetman race bike
'65 CA77
'63 CA72 project
'65 CB160 race bike

'63 CA95

a number of other '60s Hondas
Top
Post Reply

Return to “Ignition - Mechanical | Electronic”