Estes V2 Build Part 10 Fitting the Fins

With the engine mount dry fitted in place, the thru-the-wall fins were slid into their slots.
You can see there is gaps at the root edge between the fin tabs.

Note at the rear of the fin (at the body tube end ) the root edge is touching the tube. The easiest way to fit a fin is to sand where the root edge is making good contact. This lowers the fin in the slots and makes the gaps smaller.

Don't forget the inside where the tabs make contact with the engine mount tube.

The notch in the lower tab needed to be made deeper to fit around the coupler.
Sanding down the tab a light amount also helped lower the root edge for better contact with the body tube.

Here's the fin after fitting the TTW tabs.
There is still a very slight gap but it is much less than before.

I fit each fin to it's own location on the boat tail.
There is a number 2 penciled on the slot below the fitted fin.
Fin 2 was fitted to that lower location. All the fins are numbered on the root edges.