John Figie On Mon, Jul 4, 2022 at 9:02 AM gene heskett <ghesk...@shentel.net> wrote: > > > Having watched and listened to the movie, I'm of the opinion the tooth > profile of the belt doesn't match the pulleys. Whether that's from wear, or > tooth profile miss-match yet to be determined.
I think the belt is pretty new. It is not the original. But It seems like the tooth profile matches with the pulley. > > I have one of Dewalt's earliest electric wood planes, must be 40+ years > old, > works nice to fit the ends of a split rail fence rail, but it has a > trapezoidal > tooth and drive belt, and you can hear it howl a mile away. OK this is what I wanted to confirm. These belts can be pretty noisy. This is consistent with other feedback comments. I am OK with the noise for now. I need to get the rest of the machine working before spending money on a quieter belt. I just wanted to be sure the noise is expected. Some of these components can be pricey, maybe depending on where I get them from. I think there is no reason why this needs to be a timing belt. The spindle encoder is driven from a counter shaft from the 3 speed gearbox - yes it always spins at the spindle speed not the drive pulley so backlash and timing is not an issue. > On Mon, Jul 4, 2022 at 4:10 AM andy pugh <bodge...@gmail.com> wrote: > > On Mon, 4 Jul 2022 at 05:55, Roland Jollivet <roland.jolli...@gmail.com> > wrote: > > > > If the noise is from the belt whipping, then lightly press a rod, or two, > > on the back of the belt to see the effect on the noise > > If you have a 3D printer, you could try making a floating tensioner: > > https://www.roll-ring.com/?lang=en > Andy, That is a nice idea. However in my case I don't think I would have clearance. The belt comes already perhaps too close to the servo motor. Maybe I would need some kind of rocking tensioner with a wheel on the outside of the belt that would switch sides according to the direction of rotation. But I am not sure how it would switch from one side to the other. Maybe in the future I could use some kind of multi groove serpentine belt or belts that have idelers to route around the encoder and servo motor. But for now, if it works I will just get the rest working. Thanks everyone for your input. I appreciate all of the insight. Regards, John Figie _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
