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Re: 76sec error on new OPW-11

 

I have seen the new "milled down" (front or back full side) with the milled down bottom stud (aka "nipple") only on new SLW (spring loaded worm) drives.? Earlier wirm blocks were completely black anodized, inside and out.??

The new very thick aluminum of the SLW OPW metal channel (which has provision for the SLW spring attachment) requires the slightly smaller blocks to fit it's tight channel, and even so, it is very close to not closing the worm to ring gear spacing tightly.? ( I had to work on that RA to get the RA hysteresis to zero on Vishal's SLW system last week.? )

? If you are ordering new replacement worm blocks, you'd really need to specify which blocks (or better which drive system) you have.? The website order form should break these different block types out.

Best of luck,
Michael

On Sun, Aug 8, 2021, 7:30 AM David Malanick <malanick@...> wrote:
The blocks evidently have changed.
This must be due to the change over to the spring-loaded worm.
I ordered a set of extra blocks when I did the Belleville washer modification, in case I needed them because of a screw up.
You can see in the picture, the blocks I ordered are completely anodized and the index peg on the right is not milled down.
The blocks that came with my mount, new in May, are milled down on one side. I assume this is to seat them tighter against the block holder.
The block on the right that pivots up and down away from the worm has the index peg milled down.
I assume this is because it needs more clearance room for pivoting as the worm rides up and down on the worm because of spring loading.
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