Another Type of DT

Yes, I just wrote about an electronic DT.  But what if you are working on smaller models that cannot support an additional 5 grams?  This is a Fuse-Type DT, but I have located the fuse in the rear of the model.  With this type, you eliminate the need for routing lines and such.  This is not new.  You can usually see these on OT Sticks and other larger models.  What is semi-new is where the tension to pop the tail resides.  It is enclosed within the fuselage for a clean install.

I first saw details of this structure on Al Zimmer’s 1/2-size Gollywock a couple of years ago, but this is the first time I have tried to implement it.  It utilizes four pins (or other bent wires) and two dental bands.  I hope the weather holds for the weekend and I can get this new Embryo tested.  Read the picture captions for more details.

This is the DT setup loaded and ready to go. You can see an anchor point for a dental band at the rear of the fuselage opening. At the extreme rear, there is a pin in the tail assembly and another on the tip of the fuselage. A second dental band keeps the tail locked down until the fuse burns the band.

here is a bottom view. You can see the stretched dental band running up to a slot in the top of the fuselage.

The top view of the tail assembly locked down. At the front, you can see the stop block that positions the tail and the slot with part of the fin in it.

Here the tail is popped up, as if the fuse had burnt through the band.

The bottom view with the tail popped. Now you can see the tip of the fin with another pin hook. This front dental band has pulled the fin down.

Here is the fuselage with the tail assembly removed so you can see the stop blocks and the fin slot.


This is the bottom of the tail assembly. The front of the fin is extended slightly below the surface of the fuselage so that the tail always is within the slot. A pin hook is installed on the tip. The leading edge of the H-stab is straight to engage in the stop blocks and act as a pivot point for the tail assembly.


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