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I have been looking at small high-speed servos lately to replace some of my older ones and I have a question. Why, in this era of Lipo batteries—which isn’t new, are servo manufacturers still using the 4.8v and 6.0v speed and torque standard? Wouldn’t it be more informative to use 3.7v and 7.4v (and maybe more, like 11.1v)? Anyone who really cares about these numbers is running lipos. Any thoughts?

Because 4.8-6 volts are still commonly used in BEC'S. NIMH receiver packs are still used as well.

Servos made for high voltage typically have those ratings as well.

It also enables you to perform a performance comparison against the older gear.... speed and torque figures at (say) 7.4v are always going to be higher than at 4.8v or 6.0v....

Alex

Incredible_Serious wrote: ↑Tue Mar 09, 2021 4:10 pm It also enables you to perform a performance comparison against the older gear.... speed and torque figures at (say) 7.4v are always going to be higher than at 4.8v or 6.0v....

Alex

While I absolutely agree with you, its probably fair to say that modern digital servos are going to easily outperform older analog stuff at any voltage.

Outside of performance, I think most of the newer stuff is much lower quality than a lot of vintage stuff. I've got 30 year old Futaba analogs that still work perfect, I wouldn't expect that from most of the stuff on the market.

Airtronics servos are still as sharp as ever. Getting hard to find parts for them though. Airtronics 94145 is still the best 1/12 scale servo I have ever used.