HRX Pulley

HRX Pulley

Postby rlee8394 » Sat May 26, 2018 6:10 pm

Anyone know what the the set screw size is for the HRX pulley? Mine seem to have gone MIA!

Tanks,
Ron
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Re: HRX Pulley

Postby rlee8394 » Sun May 27, 2018 1:25 pm

Thread seems to be #6-32. I'll check Lowe's and Home Depot.
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Re: HRX Pulley

Postby rlee8394 » Sun May 27, 2018 2:03 pm

Actually, just checked with a #8=32 screw and it was a better fit.
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Re: HRX Pulley

Postby rlee8394 » Sun May 27, 2018 2:55 pm

Looks like a #8-32 x 1/4" did the trick.
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Re: HRX Pulley

Postby 10ovr » Sun May 27, 2018 7:42 pm

Glade we all could help :lol:
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Re: HRX Pulley

Postby Ellingtonic » Mon May 28, 2018 8:12 am

What is the correct size for the pulley in the Classic? My 1/16”seems too big.
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Re: HRX Pulley

Postby Ellingtonic » Mon May 28, 2018 6:19 pm

A friend had a .05 driver which did the trick to remove the Classic pulley. Now how do I stop the HRX pulley from wobbling like mad?
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Re: HRX Pulley

Postby 10ovr » Mon May 28, 2018 7:15 pm

Ellingtonic wrote:A friend had a .05 driver which did the trick to remove the Classic pulley. Now how do I stop the HRX pulley from wobbling like mad?

You need to adjust the 3 allen's till you get it centered
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Re: HRX Pulley

Postby rlee8394 » Mon May 28, 2018 8:41 pm

My HRX pulley only has two set screws. The stock Prime pulley has three screws. Maybe they changed the HRX pulley at some point.
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Re: HRX Pulley

Postby Ellingtonic » Mon May 28, 2018 8:58 pm

10ovr wrote:
Ellingtonic wrote:A friend had a .05 driver which did the trick to remove the Classic pulley. Now how do I stop the HRX pulley from wobbling like mad?

You need to adjust the 3 allen's till you get it centered


Mine only has two set screws and I’ve wasted a couple of hours on it. I’ll play with it again in a few days. Next time I want to burn money, I’ll just light it on fire. Right now I wish I’d never heard of this “upgrade”. No doubt it’s cheaper to buy with only two set screws, but balancing this thing is a PITA.
VPI Classic 3, 10" 3D arm, ceramic platter, dual pivot, HRX pulley, VPI ring, Symposium ISOSegue, Soundsmith Puau Mk II, Modwright PH 9.0, Audio Research Ref 5SE, Audio Research Ref 75SE,Focal Electra 1028, Black Cat Matrix II,3202, & 3232
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