About this brushless motor
Brushed motors are consumables: the brushes shorten, the commutator glazes, and a tired one feels like a gearing problem long before it feels like a motor problem. Rather than diagnose that, we keep a spare on the shelf. It runs on the same two in one board and the same pinion, so the swap is two screws and two solder joints, and the chassis is back out the same evening.
Where it sits in the HYPER GO RC car range
The 1639C is part of our Motors, ESCs & Radio Gear shelf, which carries 11 parts for the MJX HYPER GO range. Model code 1639C is the number every listing here is keyed to: quote it and the gears, shocks, wheels and bodies that suit this chassis all line up. It is a service part rather than a vehicle, so check the fits row before you order.
Fit and compatibility
This part is listed against H16SC, H16DR, H16GT. Those codes are stamped on the chassis plate under the body; photographs are a poor guide at this scale, because neighbouring versions differ by a couple of millimetres and look identical. If the plate on your car is unreadable, send us a picture with the shell off and we will tell you which version you have.
Living with it
Electronics fail hot. Blow the heatsink and the fans out after dusty sessions, keep the wires clear of the spur gear, and give the car two minutes between packs in summer.
Specification
| Motor | 390 size, brushed |
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| Type | Replacement, ready to run chassis |
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| Pinion | Stock pinion fits |
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| Fits | 1/16 brushed chassis |
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Questions about the 1639C
- Will this fit my HYPER GO RC car?
- Match the model codes in the fits row above against the code stamped on your chassis plate. Brushed and brushless parts are not interchangeable in either direction.
- Does it need setting up?
- No. The 45A speed controls read the cell count when you plug a pack in and set their own cutoff. Receivers are bound with the transmitter held close to the car.
- What if the car powers up but ignores the handset?
- That is almost always a lost binding rather than a failed receiver. Rebind both units together before ordering a replacement.