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Hi Steve,
I went back to your design and Bojan's suggestions, and since I don't have access to any metal working tools or even metal, I made it from what I love to work with, wood.
So it might look amusing, but it does work as you mentioned. provides enough friction for the motor to turn the RA axis, but I can manually turn the RA axis without stressing the motor gear train.
I'll be using a thinner ply piece as the friction plate. but as it is, there is no deflection and provides ample hold, and once adjusted, I don't need to adjust the pressure.
This is a homemade fork mount that I built for an 8" F6 Bintel reflector that came with a Dob mount. so still work in progress, but I have done some preliminary tracking tests and it tracks well for around 10 minutes. still needs refinement, but getting there.
will post details of the mount in a new thread.
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