Reedy 17t Mini-mod and Quantum Micro Reverse Problem
04-30-2009, 08:15 AM
#1
Reedy 17t Mini-mod and Quantum Micro Reverse Problem
Frustrated by the lack of helpful online support for Reedy and LRP products, I'm turning to the community. I just installed an LRP Quantum Micro Reverse A.I. in my RC18B. In addition, I installed the Reedy 17t mini-mod motor. I ran about 8 batteries with the 14/60 gearing set up fine, then went down to 12/60 per recommendations and hot, short run times. After a few runs with the new pinion (running cooler with the 12 pinion and new heat sink), I began to lose power, as if the batteries were dying, then suddenly, the car would stop. I thought I was overheating, but it's a different problem. The steering works fine, as if I overheated, but if I rotate the motor by hand, or the move the buggy by hand, the motor will turn over and go, but with dramatic power loss. I have not yet diagnosed whether it's the motor or the Speed control by trying a new motor, but was hoping anyone with a familiar story might have some advice. Again, once the motor turns over manually and revs up, I can control the speed with the transmitter just fine. Once the motor stops, it's dead. The only other thing I did differently before the track runs was to spray some motor cleaner (same stuff Team Associated uses) into the motor and add a drop of bearing oil to each end of the motor. Any help is much appreciated!
04-30-2009, 08:48 AM
#2
Frustrated by the lack of helpful online support for Reedy and LRP products, I'm turning to the community. I just installed an LRP Quantum Micro Reverse A.I. in my RC18B. In addition, I installed the Reedy 17t mini-mod motor. I ran about 8 batteries with the 14/60 gearing set up fine, then went down to 12/60 per recommendations and hot, short run times. After a few runs with the new pinion (running cooler with the 12 pinion and new heat sink), I began to lose power, as if the batteries were dying, then suddenly, the car would stop. I thought I was overheating, but it's a different problem. The steering works fine, as if I overheated, but if I rotate the motor by hand, or the move the buggy by hand, the motor will turn over and go, but with dramatic power loss. I have not yet diagnosed whether it's the motor or the Speed control by trying a new motor, but was hoping anyone with a familiar story might have some advice. Again, once the motor turns over manually and revs up, I can control the speed with the transmitter just fine. Once the motor stops, it's dead. The only other thing I did differently before the track runs was to spray some motor cleaner (same stuff Team Associated uses) into the motor and add a drop of bearing oil to each end of the motor. Any help is much appreciated!
04-30-2009, 08:52 AM
#3
I think 1 of the poles on the com are burned out. There are 3 patches the brushes contact and if 1 of them burns up this can cause it to not start up until you push the motor. Sorry but that's happened to me too many times to count with these micro brushed motors which is why I now only run brushless.
04-30-2009, 11:38 AM
#4
Both answers above could be correct. I have used so many motors up its not even funny. I would definitely start by replacing the brushes. This is the most common part to wear first. If you keep playing with it like it is you will likely burn one or all of the commutator poles like mentioned before.
Unfortunately one hot run can burn off the natural lubrication in the brushes and every run after that just does damage. If you keep the temps in check from the start, you can get a long happy life from a good brushed motor.
Clearly brushless is the way to go, but you can have plenty of fun with brushed with just a bit more maintenance routine.
Unfortunately one hot run can burn off the natural lubrication in the brushes and every run after that just does damage. If you keep the temps in check from the start, you can get a long happy life from a good brushed motor.
Clearly brushless is the way to go, but you can have plenty of fun with brushed with just a bit more maintenance routine.
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