Still in the process of tuning the Fardriver controller. I'm slowly cranking up the power, trying to find the limits of my motor without killing it... Risky game...
So, in an attempt to give the motor every possible chance of survival, I decided to feed it a little bit of magic potion: statorade!
Since it was impossible to find the "official" statorade here in China, I had to find an alternative. So I used a product from Ferrotec, the MPG2100, which is a liquid used for cooling high performance speakers.
So I had to resort to open the motor, which usually it a giant pain to do. Mostly because separating the stator from the rotor is really, really hard, you usually end up bashing the motor on the ground dozens of time, every time risking damaging something... Well, not this time!
This time I used a bearing extractor:
First taking out the motor and putting it on my table, which has a big hole in it, making the whole process a bit easier:
And then using the extractor from the bottom to push the stator upwards until it separated from the rotor:
If you don't have an extractor and you plan to open your motor someday, get one asap. This thing paid for itself just with this job, it made the whole process a walk in the park!
I've got this motor for 5-6 years and got it second hand in the first place... I was expecting to see rust, I was expecting to see burned copper, magnet flakes all over, dirt, all kind of crap.
I sure wasn't expecting to find the insides in a pristine condition, this thing looks brand new!
Considering how hard I have been riding this motor for the past years it is amazing. Keep in mind this is a 3000W rated motor and I've been running it at 15-20KW for a while now.
Anyway, I used a small paint brush to apply the statorade all over the magnets:
I've also added two new wires through the shaft in order to install a temperature sensor. This motor didn't come equipped with one.
I'm not sure the one I installed is working properly though, I'm getting 160 degree Celsius on the coils after a 5-10 minutes ride. I don't think this is correct since I've ridden the bike for much longer rides at such power levels and it didn't burn. The insides would look a lot more cooked if it was really reaching these kind of temps. At least I suppose... I've ordered different sensors so I will re-open the motor in a few days and try with a new one just to be sure, I'll have to replace the seals and bearings anyway.
Also here's the Fardriver installed, I'll have to make a better bracket for it, this one's just temporary, and also I'll have to shorten the power wires as they were intended for the APT controller which had terminals at the front.
I can't say if the statorade works well since I don't have any base reference to compare, because my motor never had a temp sensor. But I can definitely say that the motor casing is way hotter than it used to be. I sure hope this indicates that the heat transfer from the coils is getting a lot better and that it is not just more heat being generated
So far I've cranked up the power to 700 amps per phase, 550 Amps battery and it is really impressive. Had a few races against 600cc and 1000cc bikes and let's say that my bike was not ridiculous at all. It lacks a bit of a kick at startup and I don't think I'll be able to wheelie anytime soon with it (I don't care though, I've got the scooter for that :lol: ) but then it wakes up once passed 30kph and it seems to get more and more powerfull until there is no road anymore. Feels just like an airplane at takeoff, this feeling of irresistible power increasing over and over. Insane.
I've reached more than 130km/h easily (80+mph), but I need to find a longer road to try to see what's the maximum it can reach, it can definitely go faster.