Hi,
I have an Athern SD40 with a DH123 decoder with a zephyr. The engine is about 2 months old and when the throttle is under half power it runs fine. When the throttle goes over half power it sounds like somethings binding and makes a screeching noise. When I move the throttle under half power in about 2 seconds it goes back to running normal. I was wondering if I need to oil something or change a CV value. Thank you for your help.
Nick
This sounds more like a lack of proper lubrication than anything else, especially motor bearings.
Thanks, I will oil it.