Re: Potential Issue: Mount Shifting on Pier After Setup
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Just my two cents, but I think your problem is due mainly to a loose fit on your vintage pier. There is probably some clearance between the pier inside diameter and mount OD that allows for some cocking with the clearance between the bolt hole on the pier and bolt thread on the mount. You can crank all you want on the bolts, but you are relying on the clamp load to prevent slippage and subsequent cocking of the mount in the pier bore.
I think your best solution is to mount an AP flat surface adapter and flat pier plate to your pier as George suggested. They sell the combo as 119FSA-FP. The trick will be to the method of mounting this to your pier so you don’t have the same problem. I think the best would be to drill a 3/4” hole in the center of the flat pier plate and run a threaded rod to a bar at the bottom of the tube and clamp the pier plate to the pier tube as well as using the six bolts on the diameter. Then you have a rock for your mount. The AP flat surface adapter is precisely machined so the 1100 mount base will not cock in the bore. There is also very little clearance in the bolt holes on the diameter. Roland makes some extremely well designed and machined components. I have these pier plate too, and the precise fit amazes me. I think your problem is your clearance on your “vintage” pier.
Hope this helps.
On Nov 7, 2018, at 2:55 PM, mike.hambrick@... [ap-gto] <ap-gto@...> wrote: