ZD motor

[destcali]

I am writing to ask about the details of the ZD engine. What exactly is this part, because I think there is a problem with the housing dimension, the Z55 from the BOM file suggests 90mm, but in the design there is 66.5mm between the mounting holes, which suggests an 80mm (Z4) engine. Please give the explanation.

[BotshareAI]

@destcali Good afternoon, thank you for your question, we will check and correct the error you indicated shortly and describe this issue here.
As of today I can tell you that the model is designed for Z4

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[destcali]

Thanks you for your answer, please tell me one more thing what kind of reduction is there used (eg. Z4BLD60-24GN-30S/4GN15K)?

[BotshareAI]

Dear @destcali here is short answer and you can find more detailed answer attached

01_Mechanical, electrical and control calculations.pdf

Gearbox Model | 4GN 25K

Gear Ratio | 1 : 25

[BotshareAI]

Here is the drawing for the Z4 mounting bracket - https://github.com/openAMRobot/OpenAMR/blob/main/docs/hardware/CAD_files/production_files/MMP.03.00.00.003%20Motor%20bracket.PDF
Here is datasheet for the motors - https://github.com/openAMRobot/OpenAMR/blob/main/docs/hardware/datasheets/ZDmotor/Brushless%20ZD%20motors_60_200W.pdf

Here is renewed BOM list - https://github.com/openAMRobot/OpenAMR/blob/main/docs/hardware/BOM/BOM_specs_MMP.xlsx

Now everything is correct (Z5 changed to Z4), thank you for your question.
Looking forward to see your progress and updates on this robot!