First two numbers are the dimensions of the motors 57mm vs 86mm. The 86 are bigger motors than the 5
First two numbers are the dimensions of the motors 57mm vs 86mm. The 86 are bigger motors than the 57 but the 86BLF04 is bigger (longer) than the 86BLF03. Bigger motor means more force.
I think for collective, most people are doing 86 series. 03 would probably be fine but for only 20€ more, you can get the stronger 04 motor kit.
I think for collective, most people are doing 86 series. 03 would probably be fine but for only 20€ more, you can get the stronger 04 motor kit.
![SR-F_Winger_[73]_David](https://cdn.discordapp.com/avatars/98037306870472704/f924b51d2e4486c1eb873c2f4fb7f6a3.webp?size=40)
