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Renewable Energy Questions/Discussion => Wind and Hydro => Topic started by: klsmurf on January 19, 2012, 08:49:53 am

Title: Rotor to Shaft Connection
Post by: klsmurf on January 19, 2012, 08:49:53 am

Hi all,

My question is:
What do you all use when connecting a rotor to the shaft when doing a motor conversion or in my case a servo motor?

I've got a older AC servo with neo mags in it. The rpms are high, but I think I can still get it to charge a 12V battery. It has a 24mm shaft that is keyed.

For me, this is the next step in my hobby before building an axial machine. Thanks for any help.

Title: Re: Rotor to Shaft Connection
Post by: Jarrod9155 on January 19, 2012, 02:28:04 pm

Check eBay fore a hub . I wanna say Ive seen diffrent ones on there   

Title: Re: Rotor to Shaft Connection
Post by: bj on January 19, 2012, 03:43:32 pm

  Klsmurf:  I've had good luck with the two piece taper type (forget official name)  You get them for the
shaft size, and as you tighten the squeeze bolts, the inner is squeezed onto the shaft.  Removal is by
jacking bolts.
  In theory, if the fit was poor, or not enough squeeze was put on, they could slip, but on a conventional
HAWT, the blade assembly would only push on further, not fall off.
   Only a thought, but I've had good luck with them in numerous applications w/ lots of vibrations etc.
   Good luck

Title: Re: Rotor to Shaft Connection
Post by: Dale S on January 19, 2012, 04:40:52 pm

Taper locks.

Title: Re: Rotor to Shaft Connection
Post by: bj on January 19, 2012, 06:48:19 pm

   Thanks Dale---went brain dead there.   O.K. again.

Title: Re: Rotor to Shaft Connection
Post by: Dale S on January 19, 2012, 08:11:01 pm

Just trying to make up for some of my own brain deadness. :o

Title: Re: Rotor to Shaft Connection
Post by: klsmurf on January 20, 2012, 08:07:47 am

Thanks for the replies all. Yes, taper-lock hubs, that's what I was trying to think of when I asked. Thanks Fab...ah..er...DaleS.

The whole idea may be all for naught anyway. I received the motor yesterday afternoon and spinning the shaft, it cogs pretty bad.
I don't really know anything about these motors, but that doesn't seem to be right. I looked up the makers website to check the numbers, but it's an older motor and they don't jive.

Guess I'll have to do some more research and ask more questions. I know there's a couple of guys here that have worked with servos as wind gennys.       

                                         Kevin