Back in 2010 long before HPI released their HPI Baja 5B Flux 1/5 scale brushless car I made a Baja 5B brushless conversion using a big Schulze ESC and tested two different motors – one being a Neu 2230 and the other a Lehner 3060. This was a very capable setup and even though I really enjoyed the build and had fun driving it a few times I must admit that the setup was just too powerful for the car to put down the immense power to the ground.
Now with the Losi 5ive-T and 4WD it should be easier to get proper traction instead of the 2WD on the HPI Baja 5B that I ended up crashing. So in choosing the motor and ESC I made five decisions:
- Start out with something that can be upgraded to more cells if I need more power but don’t start out like last time and “overdo” it
- Build a car that works well on the track and for bashing – I will not be doing speedruns or something similar
- Even though it will put pressure on the ESC I have decided to use the motor and ESC for breaking
- Get something where there is a reasonable balance between price and quality/performance
- Get something that has been on the market for a while and has been tested thoroughly (no cheap stuff from HobbyKing or similar)
The motor for the Losi 5ive-T
Having looked at the options today I got it narrowed down to three options for the Motor. The Lehner 3080, the Neu 2230 or the Castle Creations 2028 (which is basically a Neu motor just mass produced). My priority list would be the Lehner 3080 as the preferred choice but I ended up with the Castle Creations 2028 instead for two reasons. It has had great reviews on many forums, it is by far the best bang for the buck and I could run the car on a range from 8-12 cells which is what I would prefer to start out with (more on that later).
It is also worth mentioning that Castle Creations recently made some performance-enhancing updates to this massive motor:
- Revised stator and magnet shapes provide lower cogging torque for improved starting performance
- The new 800Kv rating will make the setup faster
- Rated at a higher RPM (45,000) due to improved manufacturing processes
- Capable of operating on 12S
Here some photos of the unit as it comes right out of the box including a shot with the motor on a scale and a size comparison to a Castle Creations motor in a 1/10 Traxxas E-Revo:
The ESC for the Losi 5ive-T
Finding the ESC turned out to be a choice between two manufacturers and both options had its pros and cons. One option was going with the highly praised MGM controller lineup. From what I can gather going over tons of YouTube videos and forums the TMM 25063-3 for Cars X2-SERIES PRO should be a solid performer and I have yet to find anyone stating that this has caused them issues or that has complained about performance. This ESC is capable of handling 15S and 250amps continous. The only downside is the price tag at around 610EUR with a few necessary optionals (fan, on/off switch, water protection, wiring).
The second option was the Castle Creations Mamba XL2 ESC. This speed controller is an excellent partner for the 2028 motor and is fairly priced at 171USD. This has also been on the market for a few years but with that said there has been issues with the unit and many have experienced that it went up in smoke. Furthermore there is an issue with the warranty and the fact that the Losi 5ive-T will probably weigh around 35lbs. Castle Creations write the following on their website:
“The Mamba XL 2 and 2028 motor are recommended and warrantied in vehicles weighing less than 25lbs for 4WD and 30lbs for 2WD. Any use outside of these recommendations may lead to an ESC and/or motor failure that is not covered by the manufacturer’s warranty.”
Also the Mamba XL2 ESC is only capable of taking up to 8S batteries but going back to my wish to start out and then be able to upgrade I decided that with the affordable price tag, the fact that they should have fixed most issues by now and that I have seen a few videos on YouTube where this setup is tested made me confident that this was the right place to start. This would also allow me to upgrade to the MGM controller if and when this should ever become relevant.
Videos of the Losi 5ive-T with the Mamba XL2 ESC and 2028 motor
The following is a two videos show a) a car with the same setup running and b) a video review of the Losi 5ive-T and the Castle Creations motor/ESC combo:
Continue to part 3 of the Losi 5ive-T build series http://deguno.com/rc-cars/building-a-losi-5ive-t-brushless-part-3-fitting-the-parts-and-testing-the-truck