Eggtimer Rocketry Holiday Sale

[Onebadhawk]

See Cris,,
This is what happens when you offer a great product at a great price...
Keep bangin em out ....lol...

Teddy

 

[wighty44]

Even though my order is in hand (and built / tested), the fact that Cris is keeping his customers updated as to the reasons for the shipping delay represents (to me) the mark of excellent customer service!

 

[Wayco]

Just got shipping info on the six Eggfinders I added to my fleet. I'm gonna make another attempt at building the TRS, and needed three more Eggfinder TX units for builds in progress. I'm always surprised when I build one of these and it works, but with six operational EF TX's working now, and several more that I have supervised building, I should be used to success. Now if I can get a TRS under my belt, I will be ecstatic!
Just for general information, I have a bunch of flights over 20k ft. with 100% successful recovery using Eggfinders. The latest was to 28,906 ft. and was recovered 4.5 miles away in less than an hour.
Cris has a great product, and I STILL don't think we have found it's maximum range.

 

[emckee]

Just got shipping info on the six Eggfinders I added to my fleet. I'm gonna make another attempt at building the TRS, and needed three more Eggfinder TX units for builds in progress. I'm always surprised when I build one of these and it works, but with six operational EF TX's working now, and several more that I have supervised building, I should be used to success. Now if I can get a TRS under my belt, I will be ecstatic!
Just for general information, I have a bunch of flights over 20k ft. with 100% successful recovery using Eggfinders. The latest was to 28,906 ft. and was recovered 4.5 miles away in less than an hour.
Cris has a great product, and I STILL don't think we have found it's maximum range.

What did you use for antenna solutions on the flight to ~29k'?

Thanks!
Erik

 

[Wayco]

What did you use for antenna solutions on the flight to ~29k'?

Thanks!
Erik

I use the stubby rubber ducky on the TX, and the longer 8" version on the LCD RX.
Stubby rubber ducky, kinda catchy, maybe a song in there somewhere.....

 

[rharshberger]

I use the stubby rubber ducky on the TX, and the longer 8" version on the LCD RX.
Stubby rubber ducky, kinda catchy, maybe a song in there somewhere.....

Can you provide a link to said stubby rubber ducky antenna and a picture maybe?

 

[ksaves2]

Just got shipping info on the six Eggfinders I added to my fleet. I'm gonna make another attempt at building the TRS, and needed three more Eggfinder TX units for builds in progress. I'm always surprised when I build one of these and it works, but with six operational EF TX's working now, and several more that I have supervised building, I should be used to success. Now if I can get a TRS under my belt, I will be ecstatic!
Just for general information, I have a bunch of flights over 20k ft. with 100% successful recovery using Eggfinders. The latest was to 28,906 ft. and was recovered 4.5 miles away in less than an hour.
Cris has a great product, and I STILL don't think we have found it's maximum range.

Wayne, Magnification, care, take your time, very fine tip soldering pen and put the build photos and the instructions on a laptop. Can jump from the build manual and the photos back and forth. REALLY good magnification to make sure you don't
have any solder bridges. I've knocked off 6 EF's, 4 quarks, 4 Egg Timers, 2 switches, 2 wifi switches and 2 TRS's. Only dorked an ET when I used an outboard GPS to experiment with and tried to put the stock one on after the build.
Don't do it! Dropped and broke one EF. Have one TRS left to build. Kurt Savegnago

 

[ksaves2]

What did you use for antenna solutions on the flight to ~29k'?

Thanks!
Erik

Folks do O.K. with a duck antenna at altitude. Another option is this mag mount but I wouldn't trust it driving down the road: https://www.ebay.com/itm/900-1800MH...361536?hash=item257fc44e80:g:9V0AAOxyj4hTInXk

Another is a patch antenna. There were some $16.00 ones out there for awhile. This is one I bought when the EggFinder first came out:

The fiberglass pole is actually an old antenna for another band.

Cris covers antennas in the user guides. Kurt

 

[321_BlastOff]

I believe this is the stubby rubber ducky that everyone is using.

https://www.mouser.com/Search/Produ...virtualkey59000000virtualkey712-ANT-916-CW-QW

 

[ksaves2]

I believe this is the stubby rubber ducky that everyone is using.

https://www.mouser.com/Search/Produ...virtualkey59000000virtualkey712-ANT-916-CW-QW

If one's installation can tolerate something longer this one is a viable option too: https://www.mouser.com/Search/ProductDetail.aspx?qs=K5ta8V%2bWhtYJMhpLP8MwoQ==

I had a bunch of standard SMA sockets so that's what I used on mine. I've got a few of these: https://www.ebay.com/itm/Qty-1-Ante...003698?hash=item43e2ceaa72:g:ewYAAOSwWnFV~MV4

They WON'T work with the RP-SMA connectors though. There is an RP-SMA version out there though.

These look like they're right if you want a bunch of them: https://www.ebay.com/itm/UHF-1-4-Wa...469682?hash=item256a13c1f2:g:v0oAAOxy1NxSEnfC

Kurt

 

[rharshberger]

If one's installation can tolerate something longer this one is a viable option too: https://www.mouser.com/Search/ProductDetail.aspx?qs=K5ta8V%2bWhtYJMhpLP8MwoQ==

I had a bunch of standard SMA sockets so that's what I used on mine. I've got a few of these: https://www.ebay.com/itm/Qty-1-Ante...003698?hash=item43e2ceaa72:g:ewYAAOSwWnFV~MV4

They WON'T work with the RP-SMA connectors though. There is an RP-SMA version out there though.

These look like they're right if you want a bunch of them: https://www.ebay.com/itm/UHF-1-4-Wa...469682?hash=item256a13c1f2:g:v0oAAOxy1NxSEnfC

Kurt

For my 38mm set up I will probably use a short RP-SMA cable to turn the antenna over alongside the TRS or on the backside next to the Lipo for the NC bay. Or the stubby if it will fit, the NC bay is variable in length since its really just a short payload bay with a nose cone. The rocket is a slightly stretched MD blue tube Weasel clone (48" airframe vs 40" airframe, nose cone is injected FG from Apogee).

 

[Wayco]

Can you provide a link to said stubby rubber ducky antenna and a picture maybe?

I believe this is the stubby rubber ducky that everyone is using.

https://www.mouser.com/Search/Produ...virtualkey59000000virtualkey712-ANT-916-CW-QW

I should have come here first, just went through 19 pages of posts on the original Eggfinder thread to find that link! I thought we had a thread that had links to all the cool stuff we use on this device?
You can fit an Eggfinder TX and that stubby antenna into a space less than 7" long. Put the battery on the other side and your golden.

 

[ksaves2]

I should have come here first, just went through 19 pages of posts on the original Eggfinder thread to find that link! I thought we had a thread that had links to all the cool stuff we use on this device?
You can fit an Eggfinder TX and that stubby antenna into a space less than 7" long. Put the battery on the other side and your golden.

Parallel the battery to the backside of the EF board and keep clear of the antenna. I know you already know that but in case a first time user peruses this thread. Kurt

 

[tim cubbedge]

Parallel the battery to the backside of the EF board and keep clear of the antenna. I know you already know that but in case a first time user peruses this thread. Kurt

How you securing battery? Tape? Tie wrap?

 

[rharshberger]

How you securing battery? Tape? Tie wrap?

I usually build blocks onto sled to keep the battery from moving then zip tie the battery into the pocket created by the blocks. You can actually see the pocket under the red and black wires where the 9V battery sits on this sled and then the two zip ties are threaded through four holes, two on each side of the battery to stop side to side movement and snug the battery to the sled (two holes are visible under the red and black wires).



Edit: This sled IS NOT for a Eggfinder or Eggfinder TRS, hence it has metal (aluminum) rods, I only use this sled as a demonstration of the pocket for the battery. Thanks Kurt for the reminder about no metal paralleling the antennas.

 

[ksaves2]

How you securing battery? Tape? Tie wrap?

Press fit, tie wraps, thrust blocks or whatever. If the fit is tight, press fit with thrustblocks might be all it takes.
https://www.rocketryforum.com/showt...-community-build-thread&p=1459856#post1459856

Shows how I did a Tele-GPS in a very tight nosecone. Yeah there are external screw heads but repeat after me,
"It's only a hobby. It's only a hobby. It's only a hobby."

You don't want metal paralleling the antenna. No matter what you do, do a range test. Kurt

 

[tim cubbedge]

Press fit, tie wraps, thrust blocks or whatever. If the fit is tight, press fit with thrustblocks might be all it takes.
https://www.rocketryforum.com/showt...-community-build-thread&p=1459856#post1459856

Shows how I did a Tele-GPS in a very tight nosecone. Yeah there are external screw heads but repeat after me,
"It's only a hobby. It's only a hobby. It's only a hobby."

You don't want metal paralleling the antenna. No matter what you do, do a range test. Kurt

Thanks - a picture speaks a thousand words. I have stuffed an Eggfinder in a NC but Lipo was below the Eggfinder, secured with tape.

 

[n27sb]

Nice work Tim

 

[tim cubbedge]

Nice work Tim

Don't know if you looked at Kurt's thread, but he's got a pretty tight set-up too (almost as tight as yours)!

 

[n27sb]

Which thread?

 

[tim cubbedge]

Which thread?

Like I said, almost!

https://www.rocketryforum.com/showt...munity-build-thread&p=1459856#post1459856

 

[wighty44]

... I have stuffed an Eggfinder in a NC but Lipo was below the Eggfinder, secured with tape.View attachment 277424

very nice. Would you U/L a close-up photo that shows your method of attaching the FG board to the bulkhead?

 

[tim cubbedge]

very nice. Would you U/L a close-up photo that shows your method of attaching the FG board to the bulkhead?

JB weld. Installed in 3" NC with Estes 29mm retainer.

 

[wighty44]

Very helpful - thank you!

 

[cerving]

JB weld. Installed in 3" NC with Estes 29mm retainer.

View attachment 277428
View attachment 277429
View attachment 277430
View attachment 277431

I did something very similar with my RW Broken Arrow 54, but I put a 29mm tube in it and epoxied two centering rings to the inside of the NC. The Eggfinder TX is on a simple sled made out of basswood that I just slide in, I use a 200 mAH 2S LiPo. The Estes motor mounts are good for this... I have a RW 38mm rocket that I'm going to do this with using 24mm mounts (Quark in the AV bay, TX in the NC).

 

[wighty44]

I did something very similar with my RW Broken Arrow 54, but I put a 29mm tube in it and epoxied two centering rings to the inside of the NC. The Eggfinder TX is on a simple sled made out of basswood that I just slide in, I use a 200 mAH 2S LiPo. The Estes motor mounts are good for this... I have a RW 38mm rocket that I'm going to do this with using 24mm mounts (Quark in the AV bay, TX in the NC).

This info couldn't have been more timely as I just bought the same rocket during RW's Black Friday sale and plan to install my 2nd TX module in its NC. Could I entice you to post a couple of photos of the Broken Arrow NC assembly?

 

[Uncrichie]

Is the sale still on? Or did I miss it? Thanks , Kurt

 

[ksaves2]

Is the sale still on? Or did I miss it? Thanks , Kurt

Go to the website and send the owner a note. I believe the sale is over.

 

[cerving]

Yes, the sale is over. Sorry... it was on for over two weeks (11/14-11/30). I'm still shipping stuff... I've spent most of my "free" time this week putting kits together.

 

[ksaves2]

Like I said, almost!

https://www.rocketryforum.com/showt...munity-build-thread&p=1459856#post1459856

Yeah, it's tight. I just drilled and tapped the coupler since it's pretty thick. I'm careful not to strip the screw holes. Really tight to stick in PEM nuts but if
I wasn't so lazy might be doable. Don't do my electronics sled. I had the eyenuts and if I had to do it again, I'd just do conventional 6/32 all-thread like Jim mentioned.
The mag switch works nice.

I did a 38mm MD LOC tubed rocket with a long upper ebay with two aft terminals for an EggFinder TRS. Blows apart and the reefed main is released by an Archetype cable
cutter. Worked nice the first time.

Kurt Savegnago