SOURCE: Horizon Hobby Product Support
Attached is the needed document for installing the shifting servo and setting the servo.
If you need assistance in the future, please use our online form to Submit a Technical Support Request.
Or you may also contact us toll-free at 1-877-504-0233.
Make sure to visit our web site at Horizon Hobby - Radio Control R/C Planes, RC Airplanes, RC Helis and Helicopters, RC Cars, RC Trucks, RC Truggys, RC Boats, RC Radios, RC Engines, parts, hop-ups, and accessories to see all of our newest products!
1. Remove the servo horn and Power the vehicle on.
2. On the transmitter, turn both AUX-L and AUX –H to 0 (Counter clockwise to full stop)
3. Center the shifter shaft on the transmission so that there is approximately a 3 to 3.5mm gap between the shifter arm and transmission case.
4. Re-attach the servo horn to the servo while holding the shifter in the center position (3 to 3.5mm gap)
5. Switch to high gear on TX.
6. Adjust the AUX-L setting up until the servo moves leaving approximately a 1mm gap between the shifter arm and transmission case *NOTE: You may need to roll the vehicle to make sure the cogs on the gears are fully engaged. Also, ensure that the linkage moves freely when engaged in in gear. To check this, give a little “blip” of throttle and then twist the linkage to ensure it is free moving on the ball studs.
7. Switch to Low gear on TX.
8. Adjust the AUX-H setting up until the servo arm stops leaving approximately a 6-6.5mm gap between the shifter arm and transmission case. *NOTE: You may need to roll the vehicle to make sure the cogs on the gears are fully engaged. Also, ensure that the linkage moves freely when engaged in in gear. To check this, give a little “blip” of throttle and then twist the linkage to ensure it is free moving on the ball studs.
Here is a video with Rich explaining how to setup the shifting servo.
<iframe width="560" height="315" src="http://www.youtube.com/embed/IJ_vLnspRQs?rel=0" frameborder="0" allowfullscreen></iframe>
Attached is the needed document for installing the shifting servo and setting the servo.
If you need assistance in the future, please use our online form to Submit a Technical Support Request.
Or you may also contact us toll-free at 1-877-504-0233.
Make sure to visit our web site at Horizon Hobby - Radio Control R/C Planes, RC Airplanes, RC Helis and Helicopters, RC Cars, RC Trucks, RC Truggys, RC Boats, RC Radios, RC Engines, parts, hop-ups, and accessories to see all of our newest products!
1. Remove the servo horn and Power the vehicle on.
![TH_shift_servo1-L.jpg](/forums/proxy.php?image=http%3A%2F%2Frccrawler.smugmug.com%2FCategory%2FTwin-Hammers-Shift-Servo%2Fi-nppfnvW%2F0%2FL%2FTH_shift_servo1-L.jpg&hash=a39eb4afbd7f99a5ecca811386e0f87a)
2. On the transmitter, turn both AUX-L and AUX –H to 0 (Counter clockwise to full stop)
![TH_shift_servo2-L.jpg](/forums/proxy.php?image=http%3A%2F%2Frccrawler.smugmug.com%2FCategory%2FTwin-Hammers-Shift-Servo%2Fi-XfLnBTW%2F0%2FL%2FTH_shift_servo2-L.jpg&hash=85d9f94cb1379ad3c8d141ac9f1b02e9)
3. Center the shifter shaft on the transmission so that there is approximately a 3 to 3.5mm gap between the shifter arm and transmission case.
![TH_shift_servo3-L.jpg](/forums/proxy.php?image=http%3A%2F%2Frccrawler.smugmug.com%2FCategory%2FTwin-Hammers-Shift-Servo%2Fi-vCpRhJc%2F0%2FL%2FTH_shift_servo3-L.jpg&hash=f66a4555f83b0f46633353130cf2b702)
4. Re-attach the servo horn to the servo while holding the shifter in the center position (3 to 3.5mm gap)
![TH_shift_servo4-L.jpg](/forums/proxy.php?image=http%3A%2F%2Frccrawler.smugmug.com%2FCategory%2FTwin-Hammers-Shift-Servo%2Fi-Mp43R7r%2F0%2FL%2FTH_shift_servo4-L.jpg&hash=3492288369ddf6419d7119dc66ec8c53)
5. Switch to high gear on TX.
6. Adjust the AUX-L setting up until the servo moves leaving approximately a 1mm gap between the shifter arm and transmission case *NOTE: You may need to roll the vehicle to make sure the cogs on the gears are fully engaged. Also, ensure that the linkage moves freely when engaged in in gear. To check this, give a little “blip” of throttle and then twist the linkage to ensure it is free moving on the ball studs.
![TH_shift_servo6-L.jpg](/forums/proxy.php?image=http%3A%2F%2Frccrawler.smugmug.com%2FCategory%2FTwin-Hammers-Shift-Servo%2Fi-LN95qv8%2F0%2FL%2FTH_shift_servo6-L.jpg&hash=9ede4a79ad9873f75792b4c018e56b86)
7. Switch to Low gear on TX.
8. Adjust the AUX-H setting up until the servo arm stops leaving approximately a 6-6.5mm gap between the shifter arm and transmission case. *NOTE: You may need to roll the vehicle to make sure the cogs on the gears are fully engaged. Also, ensure that the linkage moves freely when engaged in in gear. To check this, give a little “blip” of throttle and then twist the linkage to ensure it is free moving on the ball studs.
![TH_shift_servo8-L.jpg](/forums/proxy.php?image=http%3A%2F%2Frccrawler.smugmug.com%2FCategory%2FTwin-Hammers-Shift-Servo%2Fi-ntBvWDN%2F0%2FL%2FTH_shift_servo8-L.jpg&hash=be64e31c424167d10e817706ac9f76f0)
Here is a video with Rich explaining how to setup the shifting servo.
<iframe width="560" height="315" src="http://www.youtube.com/embed/IJ_vLnspRQs?rel=0" frameborder="0" allowfullscreen></iframe>
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