Re: Adding grease to existing greased worm and wheel
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Hi Jim, There are several sources of backlash.? I'd list them as:. 1. Worm side movement along it's axis 2. Worm gap to it's ring gear 3. Other drive gears or Oldham coupler looseness. #2 is helped by lower worm to ring gear friction, because if that were frictionless you could push the wirm further into its ring gear.?? The other way to eliminate #2 on RA is to hang a weight from a cord wrapped so the weight hangs to the East of the RA axis.? #1 is eliminated by allowing the far bearing to slide in it's cylinder, and putting a spring (R4 size Belleville spring washer) behind it to push the worm toward the gearbox end.?? #3 is minimized by tightening up on the drive parts.? In all of this effort you must beware of creating tight spots in the drive. On Wed, Jul 7, 2021, 3:17 PM Jim Waters <jimwaters@...> wrote: On Wed, Jul 7, 2021 at 02:12 PM, Derek C Breit wrote: |
Michael Herman