Unidentified servo
My JR PCM9 (J9C-4SFR)radio I purchased new came with six JR 4001 servos. This was many years ago. I still have the radio and the servos although I am not useing them now. I cannot find the specs on these servos. The instruction manual gives no information, saying "several different servos can be ordered." I have used these servos in several aircraft over the years but I purchased them for pattern flying at the time they were new. These servos have been faultless with hundreds of flights logged. I believe they have around 50-60 oz of tork (not sure any more). I still have the update to the 4001, the 4031 servos which also have been trouble free. After that I got the 4131s and now the digitals. Horizon Hobby has serviced the 4001s for me and has the information on them. TKD