Description
40xxHS vs HT – What’s the difference?
With the new HT generation of 4025, 4030 and 4035 motors we bring the proven and optimized winds of our 45xx sized HS and HT motors to the 550-600 class, alongside a modified (2.5mm higher) base for improved cooling (and even quieter operation, as an unexpected, yet welcome side effect).
The result is a faster switching, more rpm stable motor generation that delivers (even) more output power while eliminating potential amp spikes under heavy load (such as hard 3d flight) and improving flight time.
Which motor for which model?
With the 4030HT (and the freshly introduced 4030 stator size) comes a motor option that fits in between the 4025 and 4035 sizes previously available within the HS range. This allows for some interesting combinations around 6S to 8S setups in the 550-610 class (or especially lightweight, 700 size heli models), as well as for some powerful, yet lighter 12S builds (as opposed to using a 4035 size motor)
Standard kVs for 6S setups on 550-580 size models are usually in the 1080kV-1020kV range, 7S setups on ~600 size models are usually in the 960-1020 range, or around 800-850kV for 8S setups. Your standard 12S build (3d flight) will usually be around 555 to 580kV, a list of popular choices can be found below.
Important Update:
While 4025 has traditionally been the go-to size for the 550 class, and 600s on 6S (as the key there was always to keep the weight to a mimimum in an attempt to reduce stress on the packs), we have, since the release of the 4030HT, found that it actually outperforms the 4025HT in almost every setup from 550 to 600 size, all cell counts from 6S to 12S, and all combinations thereof. It also comes at almost the exact same weight (~375g) as most competing 4025 options, so for that reason we are confident to issue the following, general recommendation that fits the bill for almost all builds in the 500-600 class (and even some of the lightweight 700s out now), and replaces some of the information relating to the 4025HT beneath it: