Quote:
Originally Posted by middy
Hi Geoff,
Great looking mod. If they are not rated for sideways loads, how would they go on a Dob on an EQ platform which tips from -7.5 deg. to +7.5 deg? Would some modification be needed or could they still be used as is? I like this mod as my Dob is sticky in the azimuth direction at the moment, but I would like to build an EQ platform in the future.
Cheers.
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Hi Andrew,
I reckon such a bearing would go OK in this application as any eccentric loading would be negligible compared to Dennis' requirement.
For situations like Dennis' which might involve significant sideways force or eccentric loading, I came across a very appealing and clever variation which uses a combination of 2 opposed lazy susan bearings to cope with forces which would tend to pull the upper (larger) bearing to bits.
http://www.triangle-oshkosh.com/susan/SHIP2.HTM
Doesn't that diagram look like something familiar?
We should bear in mind that a nearly static load like your application is a different matter to a dynamic load, which would result from a large person (such as myself
) hopping on and off a seat and leaning this way and that. Add a few g's to a static load and it changes the situation quite a bit.
If you are interested in bearings generally as I am, look at
http://www.minibearings.com.au/products_index.html
GeoffW1