[Jone5y (Steve)]

Hi All,
This is my first forum post so please bear with me.

I am currently in the process of rebuilding my 12" f5.2 dob to a truss design for greater transportability and hopefully better performance overall. The problem I currently face is that my balance point has ended up being some 150mm higher than the top of the box that supports the primary, trusses etc.
I had originally intended to use altitude bearings around 250mm diameter.

My question is whether or not I can (should) use larger bearings such that the centre of the bearing equals that of the balance point or counterweight the bottom end? I would need in excess of 7kg for this. Would a combination of the two be best.

Please let me know if more information is required to solve my dilemna

Thanks in advance
Steve