To be sure that your mount will fit a particular Wheeley Bar product, it may be
necessary to verify the tip-to-tip distance of the mount. Usually, this measurement
is made with the legs of a tripod fully retracted (the shortest length) and spread
out completely. Alternately, you can measure at your preferred viewing height, but
be sure to allow for the height of the Wheeley Bars (listed with each product).
The tip-to-tip distance is the measurement from the outside edge of the end of one
tripod leg or pier foot (where it touches the ground) to the outside edge of another
tripod leg or pier foot as illustrated below.
The left-hand illustration shows the tripod footprint and the correct tip-to-tip
measurement to the outside of the legs. The center illustration shows a tape measure
being used to determine the tip-to-tip distance. The arrow in the right-hand illustration
shows the correct measuring point at the outside of the leg.
Here are some examples of different types of tripod feet. The tick marks show where
to measure on the outside of the leg to find the tip-to-tip distance. You also need
to be sure that your tripod leg or foot is not too large to fit into the receptacles
cut into the Wheeley Bars. Measure the diameter of the leg or foot and be sure it
is smaller than the listed receptacle size.
For leg style A, with a tubular tip, you need to measure the leg diameter.
For leg style B, with a flat circular foot plate, you need to measure the diameter
of the foot plate.
For leg style C, with a rounded tip, you need to measure the leg diameter.
For leg style D, with a pointed tip, you also need to measure the leg diameter.
For leg style E, with a flat circular leveling foot, you need to measure the leveling
The JMI Medium Universal Wheeley Bar with 5” wheel upgrade gives you an easy way to roll your tripod-mounted and assembled telescope from garage or den storage to a patio or driveway observing site. You don’t have to carry the telescope out in a number of heavy individual pieces and struggle to lift and assemble it in the dark. Simply roll your fully assembled telescope from indoors to outside and start looking.
This Wheeley Bar is designed to work primarily with the following telescopes:
ATS Portable Pier mount (depending on weight of telescope and configuration of the pier legs);
Celestron C4-R, C5-S, C5-SGT, C6-N, C6-R, C6-RGT, C8, C8-NGT, C8-S, C8-SGT, C8+, C8-N, C8-S, C9¼-S, C9¼-SGT, C10-N, C10-NGT, C102-HD, Celestar 8, CG-4 mount, CG-5 mount, CG-9¼, Classic 8, CPC 1100 GPS, Fastar 8, G-8, G8-N, G-9¼, Great Polaris C8, Great Polaris mount, NexStar 8 / 8i / 8 GPS / 9¼ GPS / 11 GPS, Super C8 with adjustable tripod, Ultima 8 / 9¼ / 11;
Meade 2080 and 2120 Fork mounts (except MTS) through LX200 7”, 8” and 10” (Ritchey-Chrétien, GPS and non-GPS versions) with standard field tripod, LXD55 AR-5 / AR-6 / SN-6 / SN-8 / SN-10, LXD75 AR-5 / AR-6 / SN-6 / SN-8 / SN-10, ETX-90EC and ETX-125EC with deluxe field tripod, LX10, LX50, LX90, LXD500 / 600 / 650 mounts, Starfinder German Equatorial 6 / 8 / 10;
Orion SkyView Pro mount; and
Vixen Great Polaris mount, Great Polaris Deluxe mount.
The tips of your telescope tripod’s legs fit into 2.75” diameter receptacles at the ends of the three arms of the Wheeley Bar’s sturdy painted steel tripod base. The arms adjust in length to fit tripods with leg tip-to-tip distances from 33” to 43” to let you use the Wheeley Bar with mounts other than those listed above. For more details, click on the “tip-to-tip distance” icon above. The Wheeley Bar is designed to be used with the telescope tripod legs fully retracted to keep the center of gravity low and to allow the telescope to be moved through doorways more easily. Locking wheels and leveling screws on the Wheeley Bar allow you to move, lock, and level the complete telescope assembly with ease.
The large 5” diameter polyurethane wheels on this Wheeley Bar let you maneuver on rough surfaces such as grass, dirt and gravel, as well as on uneven hard surfaces such as flagstone paving. For regular travel over very rough surfaces, consider the Wheeley Bar version that uses six 10” diameter pneumatic wheels (#WBAR10).
The photo above shows the Wheeley Bar with the 2-3/8” wheels attached for a size comparison to the 5” wheels. This Wheeley Bar comes only with the 5” wheels. It does not include the 2-3/8” wheels shown in the photo.
A word of warning. Care must be taken in maneuvering on rough or uneven natural surfaces, particularly when wet, as the wheels may sink below the surface and snag unexpectedly. We do not recommend using this Wheeley Bar on rough surfaces under adverse conditions, especially if you have a very heavy telescope.
Care should also be used when moving the system on smooth surfaces. Be certain the tripod legs are fully and firmly inserted into the Wheeley Bar’s leg receptacles. Pull or push the system only by gripping the telescope tripod below the center of gravity, particularly with a heavy scope mounted on the Wheeley Bar. Do not push the top of the scope to get it moving, particularly on uneven surfaces. Astronomics and JMI are not responsible for incorrect loading or operation.