Posted 26 June 2013 - 01:42 AM
To increase light gathering by a factor of 4, means a weight increase of a factor of 7.
Out of curiosity I checked if there were any dedicated wooden tripods that could handle a heavy telescope. Wood has the advantage of dampening vibration rather than transmitting this. Vixen seems to have the largest selection, and provides weight specifications. An example is Vixen UNI 18 Astro Wood Tripod. The total weight is 17 lbs with a load capacity of 132 lbs. Cost is $500. It looks much like a surveyors tripod with metal spikes for the ground. Each leg can be independently adjusted for length to level the base plate. Their next model up supports 220 lbs, and several heavier models above that.
If used in equatorial mode, then you need a wedge. If you do not observe outside your home latitude, it does not need to be adjustable and a fixed upscaled wooden arrangement similar to ColoHank's could work. That leaves just two bolts to work with, one to attach the Q7 fork baseplate to the wedge, and a large central bolt for the base of the wedge to the tripod base plate. Simple friction between the base plates would allow find adjustment of celestial north direction manually.