Shockcord Mounted GPS solution?

[Sleestak]

Does anyone have any solutions to mount a Featherweight GPS to a shockcord? 3D printed would be ideal, but not required.

 

[jmasterj]

Wrap it in foam, nomex (depends on where you want to put it), and tape, tape to the harness.

*Edit - forgot that I wrap some thin nomex around the foam when I do this!

 

[waltr]

I put a Eggfinder mini GPS into a 24mm couple tube that is long enough for th GPS & Battery.
One end has a glued in bulkhead, the other has a stepped bulkhead to close the tube. This gets taped on.
Also have a piece of Kevlar cord running through the tube and both bulkheads as a 'safety' line.

Then there are two rings glued to the outside of the tube about 1/2inch apart. This is where a Tie-wrap goes to hold it onto the shock cord.

The URRG club rents GPS for short cord attachment. Check them here:
https://urrg.us/wp-content/uploads/2020/02/URRG-GPS-Tracker-Sizes-and-Installation-Guide.pdf

 

[tim cubbedge]

Labrat rocketry sells them.
https://www.labratrocketry.com/product-page/shockcord-protective-sleeves

 

[Titan II]

Insert GPS and battery, tape lid, tape to cord. I tape the battery and gps to a 1/16 piece of balsa the length of the tube to keep things apart.

 

[cerving]

You can also use a second Nomex chute protector threaded through the shock cord , wrap the transmitter once, wrap the battery around it, then burrito the ends and wrap the reminder around the shock cord (it will probably be 2 or 3 times).. Tape the heck out of it with paper masking tape (DO NOT use electrical tape... it will melt, and the adhesive is messy). A 9" or 12" chute protector works best.

 

[Handeman]

Insert GPS and battery, tape lid, tape to cord. I tape the battery and gps to a 1/16 piece of balsa the length of the tube to keep things apart.
View attachment 530909View attachment 530910

I have a T3 and it's battery mounted on the opposite sides of a 1/8th piece of plywood. Its just the right width to fit into a tube like this. It goes in, the bottom cap is semi-permanently taped in place with lots of making tape. The top cap gets taped with slightly less masking tape and I use 5 - 6 wraps of electrical tape near the top and the bottom of the tube to tape it to the shock cord. Works great.

 

[Cl(VII)]

Labrat rocketry sells them.
https://www.labratrocketry.com/product-page/shockcord-protective-sleeves

Thanks for the call out.

Available here (select "shock cord mounting system" under the "Mounting Packages" drop down): https://www.labratrocketry.com/product-page/tracker-sled-featherweight

That plus a 1/4-20 eyebolt gets you setup.

 

[Sleestak]

Wrap it in foam, nomex (depends on where you want to put it), and tape, tape to the harness.

*Edit - forgot that I wrap some thin nomex around the foam when I do this!

Yes this works! Great and simple lightweight solution! The rocket in question is a 2.6" Loc Nano Magg. There just isn't a lot of room in the BT and the NC has an epoxied wood bulkhead that makes matters worse. If I was smart, I would have incorporated the tracker into the NC before hand. But I really like this solution since it is truly universal across all my older rockets with no tracker bay. Thanks!

 

[firemanup]

I’ve used these with good success on featherweight gps trackers…

https://wildmanrocketry.com/collections/nomex/products/tracker-transmitter-protector