To add to all the other information,
775s are a small, very high power brushed motor. They have a much higher RPM than a NEO or falcon, with around 15% less power. As a result, for pretty much any application you are going to need to use a gearbox or other significant reduction and it’s going to have to be more than you would need for a Neo or Falcon to achieve the same speed. In most situations the 775 is going to end up being very comparable to the neo or falcon in weight when you take the gearing into account.
The 775 is physically smaller than a Neo or Falcon and that works to its benefit, however the smaller size also comes with reduced thermal capacity. A 775 will fail much faster than a Neo or Falcon. In addition, the way most teams gear down the motors (planetaries) will result in the overall length of the 775, Neo, and Falcon being very compariable.
- Slightly smaller
- Slightly lighter
- Slightly less power
- Requires more reduction
- Burns out very easily in comparison
- Requires external encoder for closed loop control
- Slightly larger
- Slightly heavier
- Slightly more powerful
- Requires less reduction
- Increased weight means additional thermal mass and durability
- Integral encoder
There are vanishingly few situations where a 775 has a compelling use case. There might be a few, but I can’t think of any where I would legitimately use one.
That said, we’ve found neo550’s to be acceptable, but their reduced thermal mass also means one mistake ends in a toasted motor. So in that vein, there are fewer and fewer situations where I will willing spec a neo550 unless I’m forced into it because of space considerations.
This year we used 550s on our swerve steering, turret, and hood. But only because we didn’t have the money to spring for Falcons, and Falcons were rarely available.
We actually gifted all of our brushless motors (around 40 775s and a comparable number of cims and motor controllers) to a low budget team earlier this year because we doubted we’d use them and they needed them far more than we did.
550s work just fine with versas. That’s what we used this year.