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Motorcycle Repair/cb175 crankshaft taper

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Question
hi bill; im fitting an electronic ignition system to my 1972 Honda cb175 k6; and need to modify a rotor to fit on the end of the crankshaft; my question is do you know what the taper is on the crankshaft end [in degrees].... many thanks..roy

Answer
Roy, sounds like a good idea especially if you are racing the bike, but I'm afraid you will just have to pop the rotor off and measure it yourself. Not a question I have had to answer before and I don't have any examples around here to try to gauge. Sorry I can't assist with that particular question.

Bill Silver

Motorcycle Repair

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Bill Silver

Expertise

Need help with vintage Hondas from the 1960s? I am an expert with 250-305cc bikes in particular and most all of the other pre-91 models, in general. I do NOT claim to have a great deal of experience on Gold Wings, Cruisers, ATC/ATVs and dirt bikes.

Experience

I have owned/ridden/maintained Honda motorcycles for 35 years. I have written five books on Honda repairs and collecting. I was a service manager for two Honda shops back in the 1980s.

Organizations
VJMC (Vintage Japanese Motorcycle Club) of North America

Publications
VJMC newsletter, as editor for two years and as contributing editor currently.

Education/Credentials
3 years auto shop in high school, teacher's aide in Automotive Technology in Jr. College, Diesel mechanic course in college, self-taught mechanic and automotive writer.

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