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Registered
Join Date: Jul 2005
Location: Seattle
Posts: 5,823
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Custom-sized toothed pulleys?
I posted a couple days ago that I was going to modify one of my machines with a belt-drive.
I've started in on that, and found that I'll need a toothed timing pulley... I figured I would. But, it does work, even with the rough temporary setup pictured. Anyone know some place that can make a custom-sized pulley? I'll need them for the spindle shafts. I'm tempted to have a friend CAD them and just 3D print them... The bore on each is a bit different. 24mm and 24.5mm it looks like. 5.08mm tooth pitch. 
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'85 911. White - 53,000 miles bought 3-16-07. "Casper" '88 924S. Blue - 120k miles bought with 105k miles. '94 968 Coupe - White - 108,000 miles bought 9-28-17 '09 Cayman - Grey - bought 9-8-20 Last edited by WolfeMacleod; 09-30-2015 at 07:07 PM.. |
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09-30-2015, 02:55 PM
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Registered
Join Date: Aug 2002
Location: MD
Posts: 5,733
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have you looked here? McMaster-Carr
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09-30-2015, 06:31 PM
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Leadfoot Geezer
Join Date: Jan 2006
Location: Santa Cruz, CA
Posts: 3,026
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You can try Stock Drive Products too...they specialize in drive systems. You may need to have a shop bore out the pulleys to fit your specific shaft diameters, but that's a lot easier than making the entire pulley. Even if you had a pulley 3D printed, you'd have to make the bore undersize and then ream it to the exact diameter that's required. The bores would need to have only about .001" clearance (.025mm) for those diameter shafts...current 3D printing technology can't hold that kind of tolerance.
Small Mechanical Components: Precision Gears, Gear Assemblies, Timing Belts, Timing Belt Pulleys and Couplings - SDP/SI
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'67 912, '70 911T, '81 911SC, '89 3.2 Targa - all sold before prices went crazy '13 BMW 335i coupe - current DD '67 VW Karmann Ghia convt. & '63 VW Beetle ragtop - ongoing projects Last edited by rcooled; 09-30-2015 at 07:08 PM.. |
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09-30-2015, 06:46 PM
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Registered
Join Date: Jul 2005
Location: Seattle
Posts: 5,823
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Quote:
Rcooled, I'll check SDP, thanks.
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'85 911. White - 53,000 miles bought 3-16-07. "Casper" '88 924S. Blue - 120k miles bought with 105k miles. '94 968 Coupe - White - 108,000 miles bought 9-28-17 '09 Cayman - Grey - bought 9-8-20 |
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09-30-2015, 07:00 PM
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Registered
Join Date: Sep 2009
Location: North of You
Posts: 9,160
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Buy what you need and bore it out...or change the shaft size.
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"A machine you build yourself is a vote for a different way of life. There are things you have to earn with your hands." |
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10-01-2015, 04:17 AM
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Unregistered
Join Date: Aug 2000
Location: a wretched hive of scum and villainy
Posts: 55,652
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Kaman or applied industrial technologies can source it if exists, or have it made if it doesn't.
https://ec.kamandirect.com/us/index.jsp Applied.com Industrial Supply, Industrial Bearings, Material Handling, Power Transmission, Fluid Power Products | Applied Industrial Technologies | Applied.com | Applied.com |
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10-01-2015, 05:38 AM
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Registered
Join Date: Jul 2005
Location: Seattle
Posts: 5,823
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Found what I need, but we'll have to bore the center out to fit.
28xl037 http://www.amazon.com/Ametric%C2%AE-28XL037-Aluminum-Outside-Diameter/dp/B00D9ROUPC I picked up two of them locally, albeit in steel. I would have preferred aluminum
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'85 911. White - 53,000 miles bought 3-16-07. "Casper" '88 924S. Blue - 120k miles bought with 105k miles. '94 968 Coupe - White - 108,000 miles bought 9-28-17 '09 Cayman - Grey - bought 9-8-20 |
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10-01-2015, 06:34 PM
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