JMI makes the Large Size Universal Wheeley Bar to support large field tripods and telescopes. It makes setting up your large scope's mount to observe much easier.
It is suitable to accommodate Celestron's CI-700, C14, and CGE 925, 1100, & 1400 mounts (some CGE mounts may require Medium Size Universal Wheeley Bars or the 10" Wheel Upgrade, and the CGE 1400 mount requires the Custom Size Universal Wheeley Bars and 10" Pneumatic Large Wheel Upgrade); Meade's 10-14" LX400-ACF, 12" LX90, LX90-ACF, LX90GPS, & LX200 (GPS and non-GPS), 12/14" LX200R scopes, all LXD700/750 mounts, and 10-14" RCX400 mounts.
This Wheeley Bar comes standard with 2.4" wheels, and you can upgrade to 5" or 10" wheels. It is adjustable to fit tripods with tip-to-tip distances from 48-56" (122-142cm), and set at its maximum size will require 49.8" (~127cm) of doorway clearance (it can be minimized to fit through a 36.5"/93cm opening).