I bought a Trampa board from a forum member that he only used with a single 136kv 6364 Trampa motor for a short time. He then bought a dual motor conversion kit from Trampa with a second 136kv 6364 motor, but never was able to build it to his board. It was just laying on the shelf and gathering dust. So after some time he decided to sell the single drive board + unused dual conversion kit and I bought it.
I now have a problem with this brand new unused motor that it makes a loud unusual noise, is shaking/rattling and the stator is moving like you can see in the videos I will post at the end.
I already contacted Trampa, but they said the motor is out of warranty, because it was bought from the pre owner 1 year and 2 month ago. That it is completely unused would make no difference and they also will not help me trying to disassemble/fix it myself. I was expecting a 200€ motor being better than my BRH5065 that cost a quarter of the Trampa motor and would also run trough QC where problems like that are spotted. Looks like that is not the case. Anyone else have experienced such problems with Trampa motors?
I already tried to open the motor and unscrewed the four screws on the site of it, but it still is not possible to remove the rotor from the stator. Anyone of you know if it is also necessary to remove the three screws on the bottom or the screw on the shaft?
Any help to get the motor in a working state is much appreciated, so I don’t have a 200€ paperweight laying around.
These 3 screws hold the stator to the motor plate. In best case they are loose so try to tighten them.
That should fix the noise as well. If this doesn’t help you would have to open it. This motor (like SK8 or SK3) has an internal fan, the screws on the side which you unscrewed hold the can to the fan. You can take off the can now but it needs more force compared to common motors without fans.
Thanks for the response @rich. These three screws where indeed a bit loose. After tighten them the motor has more drag and isn’t freewheeling like the second 136kv Trampa motor and the other SK3 and BRH5065 motors I have. The noise isn’t completely gone either, so there must be something else wrong with it.
I see what you mean with the internal fan. It looks like it is glued to the white part of the motor, so no way to remove the rotor without a lot of force.
Someone has an idea and experience to remove the glued parts without damaging the motor?
Show me a picture form the top. The Rotor probably moved a bit to the back. You can see that if you look at the 4 screws locking down the fan on the front side of the rotor. Do they line up with the holes in the black front shield? You can gently tap on the motor shaft (back side of motor) to get the rotor back into position.
Side. If you remove the 4 screws on the rotor side, you can push it apart. It just needs some force.
Make sure the shaft is really clean and free of scratches. Take some 400 sandpaper and smoothen the shaft to eliminate any scratches. The shaft tolerance is tight!
For me that looks completely aligned. Shaft is completely free from scratches, because the motor is brand new as said above. I was able to remove the black part from the front of the motor, so the shaft should be in tolerance.
I tried to remove the rotor from the black internal fan, but the outer white part wasn’t moving at all from the fan holes. And I fear to destroy something when using high force. It looks like internal fan is moving with the can when pulling it and not separating from the fan with the four holes.
@Trampa I tried that and it looks like the outer white motor can is moving together with the internal black fan. As you can see in the picture the threading of the fan is still aligned with the hole, but together they are pushed out a bit. I guess that is not the way it should be.
Maybe compare to the motor that is still fine? I now remember one of my skate motors also had one can slightly sticking oit more so I had to push it back in like 3 mm.
The other motor has the black front shield also aligned with the four holes on the side when assembled. I did not try to disassemble the other working Trampa motor.
I think when pulling the white motor can the internal black fan should stay in place and the four holes in the white motor can move away from the threads of the inner fan. But that is not the case for this motor.
Maybe there is a bit of locktite holding the fan to the rotor. I never had that issue before. If it doesn’t separate I would not continue. You don’t want to ruin the internal sensor pcb.
So it looks like what I was fearing actually happened. I was “using the force” like recommended by you, but still tried not giving to much force. Unfortunately it looks like it was still to much. Now I pushed the stator back in the initial place where the four bolts are aligned to the holes of the black front shield and the hall cables look ripped off.
