Building the Interceptor-E

Well, I had to do it.  I took the Hobby Lobby 40% off coupon and bought an Estes Interceptor-E.  Of course, I made a couple of mods.

Engine hook
Re-enforced engine retainer

First, I reinforced the area directly behind the forward end of the engine hook.  Hopefully that will prevent the hook from being ripped aft when the ejection charge fires.  Sound weird but I’ve had it happen before.  Some of those ejection charges are rather energetic.

Forward ring mods
Modified coupler and forward centering ring

Next, I drilled a couple of small holes in the forward centering ring to attach my kevlar shock cord to.  I don’t like gluing the shock cord to the side of the tube.  I also cut about 3/4 of an inch from one end of the tube coupler to use as a block against the forward centering ring.  Since the centering ring is made of plastic, I know epoxy doesn’t stick to it as well as it does wood or cardboard.  The block is epoxied ahead of the centering ring to help hold it in place just in case the epoxy holding the centering ring gives way.

Continue reading “Building the Interceptor-E”