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Advice after my first crash and repair - chapter 1

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I got tangled in a branch and wound up with a few broken parts. I ordered all the parts and found that I mistakenly ordered a "A" arm instead of a "B" arm. Since I ordered only the arm and not the accompanying motor, I thought it would be fine to remove the "B" motor from the broken arm and use it in the new arm.

I took the bird out for the test flight today and it flew plenty steady from what I could tell, but the video came out with some serious jello effect. As I've done research on this forum and others sites, I find the biggest culprits are propeller balance and making sure dampeners are seated correctly.

I have installed new dampeners and I will buy a balance today, but wonder if using an "A" arm where a "B" arm should be used is contributing to the problem. The arm looks the same in every other way.

Thoughts?
 

Steve Carr

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It appears as though the motor arms are indeed different. Otherwise they wouldn't be selling an A and B arm.

motor arm
 
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If you look at the arms they have a slightly different angle. when I ordered arms after my Typhoon backed into a branch I ordered them with the motors. $59.95 with the motor $49.95 without the motor.
 
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Steve Carr

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If you look at the arms they have a slightly different angle. when I ordered arms after my Typhoon backed into a branch I ordered them with the motors. $59.95 with the motor $49.95 without the motor.
That might explain the jello in the video.
 
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Thank you. I tightened up the pins in the opposite corners (The new ones came with a couple of hex nuts) and did shave down one side of 1 propeller. The video came out much better today, though still not perfect. I will order the correct arm and see if that's the difference.
 

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