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I’ve recently deforked a Meade 8″ LX10 which is now sitting on my HEQ5 pro for planetary observation. Will see if the HEQ5 can handle it for some DSO imaging (I got a reasonable M13 when it was on the fork though that was painful in terms of tracking). If not will put it on my AM5. The main issue with harmonic drives and these larger scopes is not necessarily the weight per se but the torque and moment arm. This is why counterweights are necessary above a certain weight, not to balance the scope but to stop the gears slipping. You will see that under claims for the weight the adverts will often state something about x cm from the RA axis and these distances can be difficult for larger aperture scopes to fit within. I suspect that it should be possible for visual and planetary though (I’ve seen people using C11s on a bog standard AM5).
