HOn42 / HOn3.5 Coupler and Buffer 2'8" Height Gauges

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This is to verify your HOn3.5 couplers are set to the correct Queensland Railways scale height of a 2'8" center. Coupler Scale 2'8" Height Gauge: - Print with supports - The Coupler Height Gauge should be precisely 10.6mm, from the top of the rail to the top of the Gauge - Ensure it sits between the 12mm gauge track rails (as shown in the photo) - Clean out supports from the coupler pocket (use a sandpaper on a narrow ice cream stick and an X-Acto style chisel blade for best results) - You will need a Kadee Nr. 58 coupler with a Kadee "Draft Gearbox" - Mount the Nr. 58 coupler in the height gauge / box according to the Kadee instructions - The top of the Kadee "Draft Gearbox" should be just above the top of the coupler height gauge - Secure the "Draft Gearbox" with Super Glue or a M2 tape and screw - The tongue side shows the height for the top of the "Draft Gearbox" on the rolling stock Buffer Scale 2'8" Height Gauge: - The Buffer Scale 2'8" Height Gauge should be precisely 9.34mm, from the top of the rail to the top of the Gauge (use vernier calipers to check) - Ensure it sits between the 12mm gauge track rails (as shown in the photo) - This shows the height of the center of the buffers - The Buffer Center check is not for measuring buffer length or distance apart; these vary depending on the prototype Use: - The tongue is narrower than the buffers, allowing you to get close to the wagon body and determine if packing needs to be added or removed from the bogie mounts - After this, use the coupler checker tongue to check the height and centering of the coupler mounting pad; the wagon coupler mounting pad should just clear the coupler checker tongue - Mount the coupler on the wagon and ensure the coupler hook is at the same height as the one on the Coupler checker