Post by bendiesel on Mar 1, 2016 11:08:28 GMT
i seen someone mention using rc motor and speed controllers along with gears to build the servos. i did some thinking and this is what i came up with. the whole idea is to build something to get us bumping around as cheap as possible and still be some what quality
the brushless motor needed to be a low kv motor to keep the rpm within a usable range. kv = rpm per volt applied, ie 240kv x24v = 5760 rpm. i find the large plane outrunner motors give the lowest kv of all the motors avable. so i am considering using this one
www.hobbyking.com/hobbyking/store/__51868__KD_53_20_High_Voltage_Brushless_Outrunner_240KV.html
after doing some calculations on 24v and 30 amps that motor would give us .97 hp and 10.56 ip of tq.
next would be the speed controller. there is a guy who goes by simonk in the rc world that has written softwere to allow aircraft speed controllers such as this one to be run in a fwd/reverse instead of just foward
www.hobbyking.com/hobbyking/store/__68564__TURNIGY_TRUST_45A_SBEC_Brushless_Speed_Controller_AR_Warehouse_.html
here is the link to the softwere
github.com/sim-/tgy
and a wright up on how to flash (also hobby king sells a usbasp adapter to flash the chip easier)
www.rcgroups.com/forums/showthread.php?t=1513678
www.hobbyking.com/hobbyking/store/__27195__Atmel_Atmega_Socket_Firmware_Flashing_Tool.html
a short demo of what it would be like
www.youtube.com/watch?v=a_SXHoisieQ
power supply would be use server ps wired in a series. could be had for as little as 30 a piece. here is tutorial on how to rewire
www.tjinguytech.com/my-projects/HP47A
www.tjinguytech.com/my-projects/diy-24v-47a
and then we need a gear box. i looked around a bit and came across this one
www.andymark.com/product-p/am-2880.htm
would need to add another 4:1 reduction section to get to a 64:1
www.andymark.com/product-p/am-2884.htm
with a multiplayer of that it would make 62.08 hp and 675.84 ip of torque (56.32 ft-lb)
so if that wasent enough power to do what i want to do i have been considering using some kind of counterbalance system to take the load off the servos
this guy gives me ideas. youtu.be/YNI-U5IiLeI
the rest of the machine would be small, simular to what hexpod built. although i weigh 380lb (180kg) and considering a 6 to 8 inch arm. would also like to have a triple monitor and flight sim controlls as well as mouse and keybord. main reason for the build would be to play star citizen.
what do you guys think? biggest unknown right now is if thanos board would beable to work with the speed controllers.
the brushless motor needed to be a low kv motor to keep the rpm within a usable range. kv = rpm per volt applied, ie 240kv x24v = 5760 rpm. i find the large plane outrunner motors give the lowest kv of all the motors avable. so i am considering using this one
www.hobbyking.com/hobbyking/store/__51868__KD_53_20_High_Voltage_Brushless_Outrunner_240KV.html
after doing some calculations on 24v and 30 amps that motor would give us .97 hp and 10.56 ip of tq.
next would be the speed controller. there is a guy who goes by simonk in the rc world that has written softwere to allow aircraft speed controllers such as this one to be run in a fwd/reverse instead of just foward
www.hobbyking.com/hobbyking/store/__68564__TURNIGY_TRUST_45A_SBEC_Brushless_Speed_Controller_AR_Warehouse_.html
here is the link to the softwere
github.com/sim-/tgy
and a wright up on how to flash (also hobby king sells a usbasp adapter to flash the chip easier)
www.rcgroups.com/forums/showthread.php?t=1513678
www.hobbyking.com/hobbyking/store/__27195__Atmel_Atmega_Socket_Firmware_Flashing_Tool.html
a short demo of what it would be like
www.youtube.com/watch?v=a_SXHoisieQ
power supply would be use server ps wired in a series. could be had for as little as 30 a piece. here is tutorial on how to rewire
www.tjinguytech.com/my-projects/HP47A
www.tjinguytech.com/my-projects/diy-24v-47a
and then we need a gear box. i looked around a bit and came across this one
www.andymark.com/product-p/am-2880.htm
would need to add another 4:1 reduction section to get to a 64:1
www.andymark.com/product-p/am-2884.htm
with a multiplayer of that it would make 62.08 hp and 675.84 ip of torque (56.32 ft-lb)
so if that wasent enough power to do what i want to do i have been considering using some kind of counterbalance system to take the load off the servos
this guy gives me ideas. youtu.be/YNI-U5IiLeI
the rest of the machine would be small, simular to what hexpod built. although i weigh 380lb (180kg) and considering a 6 to 8 inch arm. would also like to have a triple monitor and flight sim controlls as well as mouse and keybord. main reason for the build would be to play star citizen.
what do you guys think? biggest unknown right now is if thanos board would beable to work with the speed controllers.