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Hi, I I’m having an issue with the Oomph motors I got from you recently. I’ve only been out with them once, consisting of 5 <4min flights.While checking my quad over when I got home, I noticed that one of the motors had a bad bearing. It was fine after installation, they were all smooth as silk, so this happened during the 15mins it was in the air. Ok these things happen, so I took the motor off, planning to swap the bearings. I went to unscrew the screw in the bottom of the shaft to remove the bell, when I found it was already loose. I turned it CW to see how far out it was and it seated after just over 1 turn. But then I noticed the motor had gone a little tight to turn. It had clamped up on to the bearings and the screw wasn’t even fully tightened. I should say that I didn’t touch these screws during install.So I thought I ought to check the others, the bearings in these other 3 motors where still good. On two of them the screw was also loose by a turn or two and one was ok. The ok one was perfect, no end play and the screw was tight, nice and smooth. The other two started getting stiff to turn when I seated the screw like the first on did. So the screw couldn’t be adequately tightened without damaging the bearings.Obviously there’s an issue here. Only one of the four motors could be, and was, actually tightened after the flights. The other 3 go stiff if the screws are even remotely tight, nothing like tight enough for safe flight. I’d like to return them for exchange/refund and so you can inspect them and confirm what I’m saying.Please let me know how you want to proceed.Kind regards,Paul
Nah I wouldn't say that was an issue. First, he said he hadn't got them very tight and second it looks like he was tightening all 4 bolts CW, so motors 1 and 4 would unscrew themselves it they were at all loose.
Sorry to do a bit of hijacking, but where does one find left handed replacement bolts?the only ones I've found are in China.
So the oomphs are 2cw and 2ccw I didn't realise. They look nice and seem to have stacks of power !
They are essentially the same motor as t2 tornado and returner r4, alight differences in the bell, different prop mounts, slight difference in the screws revs has been having such fun with, but otherwise same oem and fairly identical performance, can not think of a motor with the same power, smoothness and efficiency, for such a low weight (which may explain why I am running them on 4 quads and planning the fifth)
One thing I will say about the Oomph motors; they're the only motor I've had that are as well balanced as Sunnysky. SS aren't always the most powerful, but they are always smooth. The Oomph's are powerful, smooth, torquey and efficient, while also being very light. Worth putting up with a design niggle for me.
The thing that really surprised me there is you have a local bearing shop?
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