tamiya power hitch release

thingiverse

2/26/20 I've found a micro servo that actually works like it's supposed to, and my opinion on these servos has completely changed. I added a micro servo adapter and catch so you can use either a micro or mini servo. The micro is working well, but because of the plastic shaft, the catch tends to move from its set location due to the screw not being able to be tightened down tight enough to stop this. To fix this, find the sweet spot for your servo that stops at the end of the hitch travel and servo travel, then put a drop of nail polish or paint on the shaft before screwing down the catch - this seems to work well. 2/21/20 I've finally found and received a mini servo and updated this from standard size to mini size servo. The standard rear diff rested directly on the servo, but now there's plenty of clearance between the diff and servo for proper rear suspension. This uses a mini servo. I tried using a micro, but all the ones I bought had no power and were pretty unreliable - maybe if you spent $60 on a micro it would work, but I don't have the patience or money to waste anymore on those micro servos. I've included standard, mini, and micro servo STLs so you'll know what you're looking for. This is a mini, not a micro. China has flooded the market with mini/micro servos so badly that it's almost impossible to find a mini servo these days - don't buy one of those micros, there's no such thing as a mini/micro servo; it's either mini or micro. A mini servo has 4 bolt holes like a standard one, while a micro only has 2 - this is the best way to determine what you're buying. This hitch is for the Tamiya King Hauler and fits my V2 model, but you'll have to remove a cross-member if you're using the original Tamiya. I wanted to make it the same as the Tamiya, but they seem to have used a different size, smaller servo that fits into the space behind the cross-member - I tried using a smaller servo, but those are gutless wonders and couldn't move the release arm. Also, the orig version loses the ability to manually release the hitch, which isn't good for me since I want manual release too. This hitch meets all the demands you could ask for, including manual release and enabling a safety feature that prevents the servo from going into reverse and damaging the hitch or servo, etc., etc. Use a Y-connector from the receiver channel 4 and ACC on the sound board to enable light modes. Use M3 screws and bolts to mount the servo and screws for plastic elsewhere. I've included all the hitch parts but only the servo and new arms are required to change over to this new hitch - also, you must remove the switch cover as well, since all other parts remain the same.