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Spring Gear Noise

Posted: Mon Jul 19, 2021 5:32 pm
by FARMAULE
Curious from others who have flown the spring gear models. I’m getting a loud metal to metal popping sound from the gear when taxing on rougher terrain. According to the logs sl66 is complied with and I just did sl74 myself. Torque has been double checked. This may be normal? I can almost feel it through the rudder pedals/bar. Any ideas guys?

Re: Spring Gear Noise

Posted: Mon Jul 19, 2021 5:55 pm
by gbarrier
Are you sure its not the tailwheel springs you are hearing?

Re: Spring Gear Noise

Posted: Mon Jul 19, 2021 6:01 pm
by FARMAULE
Yea about 95% sure, it’s a very distinct loud popping noise when the mains are traversing bumps. Didn’t make this noise or feeling in my oleo geared Maule either. It saying it can’t be. Open to all ideas. Thanks

Re: Spring Gear Noise

Posted: Tue Jul 20, 2021 8:10 am
by Kirk
Fairing at the fuselage join?

Re: Spring Gear Noise

Posted: Tue Jul 20, 2021 6:51 pm
by VA Maule
Have you done service letter #66? It's new heavier gear leg attachment brackets with new NSA bolts and nuts.

Re: Spring Gear Noise

Posted: Wed Jul 21, 2021 3:02 am
by FARMAULE
Thanks guys. SL66 an SL74 both have been complied with. I verified with Jeremy last night with some pictures. I am going to order some new hard plastic landing gear pads as my lower ones are made out of the softer baffle material. We don’t think this is the cause of the noise but should allow for better longevity of torque settings. I’m gonna tear into the floor boards and go over all the tubing with a fine tooth comb to verify I don’t have any broken tubes. Appreciate all the info thus far, keep em coming.

Re: Spring Gear Noise

Posted: Wed Jul 21, 2021 9:43 am
by norcal64d
Do you have a gopro? If you do or have access to one, I would clamp it on the on the step or something and see if you can get the gear in the video and maybe see what exactly the gear is doing when you taxi around? Sounds a little unorthodox but maybe you'll be able to see what exactly the gear does that makes the noise? Just an idea.

Re: Spring Gear Noise

Posted: Wed Jul 21, 2021 1:52 pm
by Undaunted
Interesting, but I would say NO not normal. No sounds coming from my spring gear.

Re: Spring Gear Noise

Posted: Wed Jul 21, 2021 2:51 pm
by Lmjr
No noise from my spring gear, even landing, taxing and taking off from rough terrain. (31" bushwheels)

Re: Spring Gear Noise

Posted: Wed Jul 21, 2021 6:09 pm
by FARMAULE
Appreciate the information guys. I’m gonna tear into it and look deeper. Also ordered some new gear pads that go between the strap and leg. Jeremy said there all supposed to be hard plastic. My lowers are rubber baffle looking material. I’ve definitely got something weird going on. I will report my findings. Thanks

Re: Spring Gear Noise

Posted: Wed Jul 21, 2021 6:56 pm
by vaughans
Also make a close check that those bolts & nuts are not shanking when they reach torque? Missing Ole Yeller yet?

vaughans

Re: Spring Gear Noise

Posted: Thu Jul 22, 2021 8:30 am
by FARMAULE
Very good thought on the bolts shanking Mike. Thanks. I’ll always miss my first but really dialing in the the M7 now. Totally different beast

Re: Spring Gear Noise

Posted: Sun Jul 25, 2021 6:41 pm
by FARMAULE
Update: replacing the gear pads between the strap and leg/leg and frame seems to have fixed my issues. These should be a harder black plastic. There apparently have been 3 renditions of this material to include what I had which was what appeared to be baffle like material. Also the washer between the gear legs and frame at the centerline of the airframe were the wrong thickness. SL74 meets all the hardware requirements. Thanks to everyone who reached out. No more noise. Wish I could post the video as it was very loud.