Fwd: Corrosion in FES Motor

[Jamie Shore]

Hello FES'ers,

I removed the spinner on my mini Lak FES and found some corrosion as shown in the attached images. 

Below is a distillation of the Q&A between Luka and I:

Questions from Jamie to Luka

Do I need to do anything about the corrosion as described below?
Today, I removed the spinner for a routine inspection and cleaning. I noticed the corrosion as shown in the three attached images. 

1. Should I do anything about this corrosion? 
   
2. Will it cause problems in the future?
   

It is very hot and very, very humid in Houston for most of the year. Typical relative humidity in Houston is 90%.

Answer from Luka

"No need to do anything, and I do not expect problems in future."

Jamie's Questions for the FES Group

1. Have you seen similar corrosion on your motor?
2. Any other interesting observations when you removed your spinner?
3. The area behind my spinner was relatively clean. I lubricated and cleaned as described in the FES Maintenance Manual version 1.12, page 16. I've attached the manual to this email as PDF. Has anybody done other maintenance in the area behind the spinner that they are willing to share?

Thanks,

Jamie Shore

mini Lak FES sn#012 built June 2018 and stored in Houston, TX since Aug 2018

Here is one image. All the pics that I took yesterday can be seen here: 

https://drive.google.com/open?id=1zUF6REyN0VhhXJd8F3poOyqBbPbc5LQL

[Steve Bair]

Jaime,

My Mini was built in 8/2019 so I haven't felt compelled to look. Given that I live in an environment almost as humid as Houston I will. I'll let you know what I find.

Steve

[jason4079johnson]

Hi Jamie and others,

I am doing my first annual next month (April) on S/N 15 which was imported Feb 2019 (made in Dec 2018) and am replacing the propeller blades because of a nick in one that I'm not comfortable with, so will check for corrosion and report back.