CAT330D-L full hydraulic

[trucker1970]

Originally Posted by DavidF

Thanks trucker1970. Im working on making my own for now, but having trouble figuring out what motor to use. Thinking something in the 300Kv range to get the right flow, but not sure if it will have the torque to get the pressure. Hate to spend money on the wrong part. I have a thread started on the forum,http://rctruckandconstruction.com/sh...ad.php?t=12595

oh NICE! I'll check it out

[Erik79]

Hi guys,

Thanks to trucker1970 and Azonic!

@ DavidF:
The pump shown on video is by an italian brand: "Vivoil, oleodinamica Vivolo" with a displacement of 0.25cc, max 9000 RPM. The brushless motor is a 1000Kv 25A outrunner and work with a 3s LiPo.

See you soon....

[DavidF]

Originally Posted by Erik79

Hi guys,

Thanks to trucker1970 and Azonic!

@ DavidF:
The pump shown on video is by an italian brand: "Vivoil, oleodinamica Vivolo" with a displacement of 0.25cc, max 9000 RPM. The brushless motor is a 1000Kv 25A outrunner and work with a 3s LiPo.

See you soon....

Thank you Erik79

[Erik79]

Hi guys,

Forgotten to answer to Azonic; the hydraulic motor setup like you see in video has a wheel torque of about 24-25 Kgcm at 25 BAR and can hold, without be backdriven at all, a torque of about 22 Kgcm.
But in this version the displacement is 15 cubic centimeters (for a wheel turn), so around twice the one of the first prototype.
Not a huge value, but is already proportional to the scaled torque of the real machine: the Cat 330D has a thrust equal to its weight, 30 Tons, and the model has a thrust of about 12 Kg like its final weight.

See you....