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Hi all..I used a 300mm Howard Silvers bearing for my 10" motorized dob base project..it will take the weight ok..but I had to incorpoate a few extra tiny nylon wheels on outrigger arms plus a central bearing support bolt to stop the sideways movement...
I'm thinking of building a mount plus chair set-up..but I'll use a stub axle and wheel rim from an automotive wreckers for the base..better to be over-engineered than under!
Cheers!
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