Recently, the inventor of our favorite dolly, William Sargent shared with me critical information about using the proper CO2 bottle. These bottles had specially designed syphons installed to be used with the Colortran Mini-Crab Dolly.
Originally, each Mini-Crab dolly that was sold by Colortran were outfitted with this special CO2 bottle. Over the years, these bottles were either lost or replaced with conventional CO2 bottles that are NOT acceptable to use with your Mini-Crab.
THIS IS CRITICAL!!
CHECK YOUR CO2 BOTTLES!!!
If your bottle doesn't have a stenciled 'THIS SIDE UP' it's most likely a conventional/replacement bottle and SHOULD NOT be used in your Mini-Crab!
The obvious reason is that the CO2 bottle used by the Mini-Crab dolly is placed in the CO2 compartment laying on its side. The distinction is that they're placed horizontally. Conventional CO2 bottles are designed to be used in an upright position NOT on it's side as needed for the Mini-Crab.
Mini-Crab Dollies should use a specially designed CO2 bottle with syphons installed to prevent moisture entering into your hydraulic system which can lead to cracked o-rings or other major problems. It's probable your hydraulic system will be compromised using a conventional gas bottle.
If you need the correct CO2 bottle, or if your original bottle is no longer certifiable by your local gas house...call Marty Drennan at Visual Products, 440-647-4999 about obtaining the correct bottle.