Andy Roid
This goes out to the guys who build bigger robots.
I have taken standard servos and stacked them to build a "Spine" for my new project. I find the rotational servos weak in the bearing area. I plan on adding a plate with an additional ball bearing to give more strength to the shaft area. Other than buying larger heavy duty servos, has anyone else modified servos to add strength? Any ideas?
I also made a heavy duty lever which seems to remove some flex in the lever servos which helps in this area. I will build wider adapters for the back and bottom of the servo to spread the load when clipping or stacking the servos together. This may also help.
I am requesting other members ideas and opinions to be able to build a more ridged "Spine for my project, but not add a lot of weight.
I will update my project progress with pictures soon.
Ron R
The EZ Robot servos use a Futaba 3f on the standard servos. I want to find a rod about 12" long of this spline to make up the adapters. otherwise I will use the parts you showed me. I can use the spline couplings with the set screws which should do the job.
Thanks for the servo city site. I should find all my needs there.
Ron R
PS Thank
Sweet, that's what I was thinking. Glad this is helpful. Happy building!
By the way, have you ever used a servo synchronizer to connect 2 servos for more power?
@andy, I have 3 joints in my InMoov robot that have 2 servo's connected together for more power. I did it by taking the power leads from one intact servo and connecting them to the motor in the second servo. The second servo has the stop and the card disabled. ( I had some that I had fried the card on). This method works really well and if you need one servo to rotate in the opposite direction to the other, just reverse the power leads. I like robot and how you have used the EZ Bits build portions of it. Do you have a video of it moving?
@bhouston,
I have only done basic servo movements. I just finished assembling it the other day and due to the weakness in the spine I don't want to move the arms around too much for fear of breaking stuff. I am building a load bearing plate to try supporting the upper weight thru the spine based on the ideas from Dave. I will try to get that done today or tomorrow. Once that is proven out I will try my hand at loading a video.
Ron R
Sounds good, looking forward to the video.