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N30 Alternator size

Posted: Sat Jul 21, 2012 8:05 pm
by krisztian_andre
I've read that the NC30 came with two alternator sizes 107mm and something else. Can you tell by the engine number that which alternator will fit?

Also do you usually have to change the generator cover gasket when changing stators?

Re: N30 Alternator size

Posted: Sat Jul 21, 2012 11:53 pm
by lukemillar
Sod's law dictates that if you don't buy a spare gasket, the old one is guaranteed to tear!

Re: N30 Alternator size

Posted: Sun Jul 22, 2012 2:13 am
by Cammo
There was an early and late model stator and flywheel, the older stator isn't compatible with the newer flywheel and vice versa. You won't know which you have until you take a look.

Re: N30 Alternator size

Posted: Sun Jul 22, 2012 4:22 am
by krisztian_andre
Cammo wrote:There was an early and late model stator and flywheel, the older stator isn't compatible with the newer flywheel and vice versa. You won't know which you have until you take a look.
I found two stator types one diameter 107mm and the other is 102mm. Which one would fit this: http://www.ebay.com/itm/Honda-VFR400-NC ... 51945b3584 flywheel you think?

Re: N30 Alternator size

Posted: Sun Jul 22, 2012 6:28 am
by lukemillar
Ok, I have almost all the parts sitting in the garage so I measured them:

Image

The stator and flywheel on the right came out of a working engine. The Stator is 102mm and the internal diameter of the flywheel is 105mm.

I also happen to have on of the other NC30 flywheels, but no corresponding stator. The internal diameter of this flywheel is only 103mm

Image

So it would seem that only a 102mm stator would fit either flywheel as 107mm is too large.

Hope that helps

Cheers
Luke

Re: N30 Alternator size

Posted: Sun Jul 22, 2012 5:57 pm
by krisztian_andre
Thanks Luke!

Here's a photo in exchange I made today at the local junkyard:

Image