Loose alternator rotor

FastFred · Jun 19, 2011

Noticed the laternator rotor was loose on its central boss when I was removing it today. Therer was no visible movement before I untightened it but I didn't try to rock it. Is it just heavy pressed onto the boss, can I repair it somehow?

daveparry · Jun 19, 2011

No you can't repair it, replacement is the only safe cure, just consider yourself lucky that you've found it before it self destructed!

Dave.

FastFred · Jun 19, 2011

Wrong answer Dave but thanks! I'll buy another and sell that one on fleabay to someone whose life is less important than my own...

Joking, will bin it for sure

Paid £4000 for this bike one year ago and have done 130 miles on it. £1500n later I am nearly there.....

daveparry · Jun 19, 2011

You'll get there eventualy Fred!
I paid £500 for my 850 Interstate (which was the going rate back in 1975) when it was only a couple of years old, I have done quite a lot to it over the years though, although no major engine work so far,

regards,

Dave.

JimC · Jun 19, 2011

I'll buy another and sell that one on fleabay to someone whose life is less important than my own...

What? Remember Fred, what goes around comes around. eBay's not supposed to be a dumping ground for junk parts. If you describe it as junk, I guess that would be different. BTW, what's your eBay user name?

Flo · Jun 19, 2011

When you get a new rotor, put a new proper washer under the end nut. I had the nut come loose & it went through the chaincase.
Couldn't find it, so rode home 17 miles at 50mph.

FastFred · Jun 20, 2011

Re:

What? Remember Fred, what goes around comes around. eBay's not supposed to be a dumping ground for junk parts. If you describe it as junk, I guess that would be different. BTW, what's your eBay user name?

Oh dear. Read the post fully and perhaps develop a sense of humour. No you can't have mty ebay name and I won't be putting it on ebay...

JimC · Jun 21, 2011

Oh dear. Read the post fully and perhaps develop a sense of humour

Unfortunately I did neglect to read the WHOLE post. My bad. Sorry, Fred.

Stephen Hill · Jun 21, 2011

Not to put too fine a point on it, buy you can repair a rotor with a loose centre.
Course you need to price your labour at zero and have some skills.
Drill a hole between the inner and the outer. Turn a press fit shaft, coat with locktite, then press into the hole.
Repeat 180 degrees. Worked fine for me 15 years ago.

Stephen Hill
Victoria, BC

DogT · Jun 21, 2011

You could probably drill a 10-32 or 1/4-28 tap sized hole, tap it and locktite a long allen head set screw in it 2 places too. Wouldn't have to machine a shaft. Those rotors are expensive. That could be done easily in an evening with hand tools.

Dave
69S

kraakevik · Jun 21, 2011

Fred

I've got a bunch of old Commando rotors--you can have one for postage to Blighty

Tim Kraakevik
kraakevik@voyager.net

Loose alternator rotor

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