X-Mozilla-Keys:                                                                                 
Marc Pedings wrote:

Paul wrote:

And a good set of ear plugs with the headset!  I replaced a quad V belt
condenser fan belt with Eagle PD.  Works great but humms at an almost
objectionable level driven by a 50 HP motor at 3400 RPM.  Also to mention the
sprockets are extremely heavy!

I would hate to hear a stright cut belt then. Must be painful at
1000 HP and 10,000 RPM :-). An active noise canceling head
set should have no problem with pure tones of this nature.

It's not too bad, but it is more of a nuisance humm.  I have another air handler
using the polychain GT and it is quieter than the PD's.  We special ordered a 22
tooth DriveR sprocket for the PD drive and that has ALOT to do with the higher
noise level.  28 or more tooth will be an improvement.  One of the major 'selling'
features of the PD is the reduced noise level over standard HPT belts.  Gates
Polychain is a little quieter than PD's but the tooth/belt contact area of course
is greater for a given width on the PD's and yields a higher capacity.

Marc Pedings

Yes we must not forget the shearing load on the teeth when doing
a static analysis.
 
Paul Lamar
 
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