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Author Topic: Square-Tooth vs. Round-Tooth Drive Belt Systems Phil Hill I love my cootie bug Posts: 7595 From: Hollywood, CA USA Registered: Mar 2000 posted 02-10-2009 02:23 PM                  I have 2ea Millennium projectors/5-Star soundheads with the round-tooth belts. My PR-1014/5-Star has the square-tooth belts. Which belt system is better? Lasts longer...has fewer problems...etc.? I heard the square-tooth is preferred. Comments? Thanks!  |  IP: Logged Tony Bandiera Jr Film God Posts: 3067 From: Moreland Idaho Registered: Apr 2004 posted 02-10-2009 03:09 PM                     Square tooth belts are easy to source locally so you don't have to pay Strong's inflated prices. Same with replacement pulleys. Round tooth belts are metric pitch and a bit harder to find. Performance wise they seem to be about the same, as far as I know...  |  IP: Logged Ken Lackner Phenomenal Film Handler Posts: 1907 From: Atlanta, GA, USA Registered: Sep 2001 posted 02-10-2009 05:14 PM                     Edit: Nevermind. I misread the above post, so my question is not valid.  |  IP: Logged Tim Reed Better Projection Pays Posts: 5246 From: Northampton, PA Registered: Sep 1999 posted 02-11-2009 01:33 AM                       The current round-tooth belts seem thicker and heavier-duty than the square-toothed ones. They're quieter, too. Metric (round-tooth) is 2mm pitch, fwiw.  |  IP: Logged Monte L Fullmer Film God Posts: 8367 From: Nampa, Idaho, USA Registered: Nov 2004 posted 02-11-2009 02:09 AM                     The round tooth is a 5mm pitch belt with the catalog number of HTD-670-5M x 13mm .. which will fit this Simplex/5star setup. I got my belts from McGuire bearing here in Boise, even though they ordered out of Chicago. But saved me a good 11 bucks per pet if I had to order them from STRONG. (For reference sakes: the square tooth belt is a 260XL x.50 for the same setup..) Only pinch that I have with the round tooth is: being a more thicker belt and have to bend around that small motor pulley, the backing of the belt do break sooner than the thinner square tooth belt. Plan on doing belt changes with round tooth belts once a year for both sets. Square tooth belts can last longer, but do take heed of these belts beginning to dry out and fabric weakening after age. good luck - Monte  |  IP: Logged Don Furr Jedi Master Film Handler Posts: 509 From: Sun City, Ca USA Registered: Nov 2002 posted 02-11-2009 06:55 AM                     Which belt is recommended for the Century SA and RE-3 soundhead with Kelmar arms?  |  IP: Logged Mark Gulbrandsen Resident Trollmaster Posts: 16657 From: Music City Registered: Jun 99 posted 02-11-2009 08:54 AM                     Phil, Round tooth is far superior!!! Benefits include much lower flutter, longer belt life, far longer pulley life, overall smoother operation. It's one of three things Wrong did right! They are also inexpensive and available at most bearing supply houses. The Christie P-35 recently went all round tooth. Mark  |  IP: Logged Scott Norwood Film God Posts: 8146 From: Boston, MA. USA (1774.21 miles northeast of Dallas) Registered: Jun 99 posted 02-11-2009 09:15 AM                        Is there a generic replacement for the 5-Star/PR-1014 drive belts? Or must these be ordered from Strong?  |  IP: Logged Gordon McLeod Film God Posts: 9532 From: Toronto Ontario Canada Registered: Jun 99 posted 02-11-2009 11:36 AM                     There will be a number marked on the belt and any good belting shop should be able to get it I prefer the round metric belts to the older square teeth one as well  |  IP: Logged Monte L Fullmer Film God Posts: 8367 From: Nampa, Idaho, USA Registered: Nov 2004 posted 02-11-2009 12:12 PM                     quote: s there a generic replacement for the 5-Star/PR-1014 drive belts? Or must these be ordered from Strong? ..be the same numbers that I posted to which ones you need. -Monte  |  IP: Logged

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