Step 1-5

Blue Loctite (McMaster P/N 1004A12) is recommended on all bolts that thread into a tapped hole.

Step 1

The Drum must be cut to the correct length for the Gearbox Configuration you are assembling. The table down below shows the correct lengths for each base tube size.

All #10-32 bolts will thread into the 7/8” OD Roller Hubs after they have been pressed into the Drum. The Roller Hubs should be a press fit and may be pressed in with an arbor press.

When assembling the drum, it is critical that the hexes for the roller hubs are lined up. In order to do this it is recommended to press one Hub in, and then line up the second Hub with the first Hub using any long piece of 1/2” hex.

Base Tube Size	Drum Length
1.5"	1.0625"
2"	1.5625"
2.5"	2.0625"
3"	2.5625"

Step 2

These bearings will be a light press fit and may be pressed in by hand or with an arbor press. The image below shows the side the bearings must be installed from for all configurations of the Telescope Gearbox with the Ratchet.

The hole marked in green in the image below must be tapped to 5/16-18.

Step 3

The 1/2” ID x 1-1/8” OD Flanged Bearing will be a light press fit and may be pressed in by hand or with an arbor press. The image below shows the side the bearing must be installed from for all configurations of the Telescope Gearbox with the Ratchet.

The Nutstrips used to mount the GreyT Telescope must be cut to 1-1/2” long and assembled in the orientation shown in the image below.

The Nutstrips are an optional way of mounting the GreyT Telescope. If you plan on mounting the Telescope differently, you may omit the Nutstrips and associated Bolts from this step.

Step 4

The 1/2” ThunderHex ID x 1-1/8” OD Flanged Bearing will be a light press fit and may be pressed in by hand or with an arbor press. The image below shows the side the bearing must be installed from for all configurations of the Telescope Gearbox.

The Nutstrips used to mount the GreyT Telescope must be cut to 1-1/2” long and assembled in the orientation shown in the image below.

Just like in the previous step, the Nutstrips in this step are completely optional. If you plan on using a different mounting, you may omit the Nutstrips and associated bolts from this step.

Step 5

The Falcon 500 Motor is installed using two #10-32 x 1/2”L bolts.

It is critical that the bolts used to install the Falcon 500 Motor do not thread more than 1/4” into the Motor.