In the two last weeks, I’ve read many things about the ROAR decision to disapprove the Trinity D3.5 motor. Before going further, I must tell you that I’m not an expert in motors design, and specifications. I’m just a guy who connects the motor and enjoys every moments with my buggy. I don’t even use Trinity motors and I don’t participate to ROAR sanctioned events. In fact, I race 1/10 offroad on a 1/8 scale track and our number one rule is “Bring your 1/10 and have fun”.
To make things simple and clear because this is how I love things. ROAR is the organization that approves different R/C products so when you go to a ROAR sanctioned event, your equipment must be ROAR approved. This is to make things fair to everyone.
Here’s how I understand how things work. Every time a manufacturer releases a new motor, the ROAR guys test the motor, if the motor passes the tech inspection, the motor is ROAR approved. So the racers who want to race in a ROAR sanctioned event can buy this motor because it is ROAR approved.
When Trinity released their D3.5 motor, ROAR has approved the motor and then everybody was happy. Unfortunately for Trinity, ROAR rechecked different models and the Trinity D3.5 did not pass the spec test due to larger wire diameter.
So, how a previously approved motor can become black listed? From my understanding, the wire used inside the motor is now larger in diameter than what it was previously when ROAR has approved the motor. Why did it change? It seems that ROAR has decided to use new testing equipment and that’s why the popular Trinity has failed the test. Did the wire manufacturer has changed something in the wire production? Did Trinity know about this? If the first batch of Trinity D3.5 motors have a “ROAR legal” wire, how could we determine if your motor bought several months ago is legal or not?
Meanwhile, there is a little internet fight between ROAR and Trinity. The folks at ROAR say they have received complaints about the motor and this is why they rechecked it. On another hand, Trinity says nothing has changed and ROAR has some interest conflict and uses new testing-equipment.
With all that being said, I would not put the blame on anyone. Time will tell who is wrong and who is right. But for now, this situation is definitively not good for Trinity, frustrating for the racers who have bought the D3.5 motor and the most important, not good at all for our sport/hobby.
Here are some great articles from LiveRC about the “The ROAR vs Trinity thing”
Here’s the letter from Trinity to ROAR