Cowl Sealing

Time: 4 Hours

I found out that my measurements for the engine cowl were spot on once I was able to install the propellor. That was a huge relief as there are several moving parts that affect how the cowl sits and going by just measurements was a little scary. I was now feeling comfortable in finishing the inside of the engine cow which consist of sealing the fiberglass and installing heat shielding. I decided to use a product from Rhino linings called Rhino 9700. This product is used by composite airplane builders to line the inside of their fuel tanks. It is a two part epoxy coating that drys to a glossy light grey. The process is pretty easy, clean the cowling, mix part a with part B and apply within the 25 minute time period. You should only mix enough that you can apply in that timeframe as it starts to set up fairly fast after that. Are used a small paintbrush and a foam roller to apply, it didn’t make it perfectly smooth but it was close enough for the inside of the cowl and my needs.

It is dry to the touch in 6-8 hours and fully cured in 7 days. Now the cowl will be protected from oil, fuel and any other liquid in the engine compartment.

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