Glen Davis Posted April 19 Report Share Posted April 19 First…. Thanks for all the help with my free spinning trim wheel. A+P will be looking at it this weekend. Thinks it might just be a broken roll pin in the sprocket/gear. If so, easy fix. Moving on, I have electric speed brakes. Yesterday they deployed twice without me touching the button. They deployed completely on their own. I pulled the circuit breaker so they are now deactivated. Any thoughts on what might cause them to self-deploy? Maybe a faulty switch? Quote Link to comment Share on other sites More sharing options...
Aerodon Posted April 19 Report Share Posted April 19 post a picture of your speed brake switch. I have drawings showing the 2 or 3 different types. Aerodon Quote Link to comment Share on other sites More sharing options...
Glen Davis Posted April 19 Author Report Share Posted April 19 I will in the morning. Quote Link to comment Share on other sites More sharing options...
PT20J Posted April 19 Report Share Posted April 19 I have a speed brake switch on the left yoke horn and I found that is is pretty easy to brush against it if I reach around the left side of the yoke. It's a pretty sensitive button and haven't even felt it when I've bumped it. Usually I do this when doing something on the ground and don't notice the brakes deployed until I turn of the master and hear the loud CLUNK. Regarding the trim -- a sheared roll pin would do it. The interesting question though is how it would have been sheared. The GFC 500 trim servo doesn't have nearly enough torque to do it -- it would have to have been sheared by forcing the trim wheel. Does your trim have the modified jam proof stepped stop nuts? If not, it's possible the installer jammed it when working on the GFC 500 install and damaged the roll pin when breaking it free. Here's a link to the service instruction https://www.mooney.com/wp-content/uploads/2020/12/SIM20-88A.pdf 2 Quote Link to comment Share on other sites More sharing options...
buddy Posted April 19 Report Share Posted April 19 I’ve also bumped the switch with my left hand holding the yoke in turbulence, the button is sensitive. Quote Link to comment Share on other sites More sharing options...
jlunseth Posted April 23 Report Share Posted April 23 What Skip said. Also, I have caught myself reflexively hitting that button in order to transmit. They are close together, feel the same, and in turbulence it is a possibility. Quote Link to comment Share on other sites More sharing options...
Glen Davis Posted April 23 Author Report Share Posted April 23 Update, the belly pan came off and the chain was sitting there with the connector link missing its retainer lock thingie. With the help of this group I was able to find a replacement connector link on Amazon. I showed it to my mechanic and he said that will work perfectly. I got four of them for five dollars. It has to be the cheapest aircraft part I’ve ever bought. I have three now available for sale at $250 each if anybody needs one. 1 4 Quote Link to comment Share on other sites More sharing options...
hubcap Posted April 23 Report Share Posted April 23 2 hours ago, Glen Davis said: Update, the belly pan came off and the chain was sitting there with the connector link missing its retainer lock thingie. With the help of this group I was able to find a replacement connector link on Amazon. I showed it to my mechanic and he said that will work perfectly. I got four of them for five dollars. It has to be the cheapest aircraft part I’ve ever bought. I have three now available for sale at $250 each if anybody needs one. Does the link come with the appropriate STC paperwork? Quote Link to comment Share on other sites More sharing options...
Alan Maurer Posted April 24 Report Share Posted April 24 wow...I would like to buy four parts for five dollars and then re sell them for $250 each Quote Link to comment Share on other sites More sharing options...
Pinecone Posted April 24 Report Share Posted April 24 20 hours ago, jlunseth said: Also, I have caught myself reflexively hitting that button in order to transmit. They are close together, feel the same, and in turbulence it is a possibility. BT, DT Also Quote Link to comment Share on other sites More sharing options...
A64Pilot Posted April 25 Report Share Posted April 25 On 4/24/2024 at 1:44 AM, Alan Maurer said: wow...I would like to buy four parts for five dollars and then re sell them for $250 each Joking of course, however the Amazon link may help someone in the future Quote Link to comment Share on other sites More sharing options...
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