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Single deploy only? You are not using the nosecone to hold a parachute for head end dual deploy?
Single deploy only? You are not using the nosecone to hold a parachute for head end dual deploy?
Gotcha.Streamer is about 16" from the av bay and main is held with cable cutters. Drogue charge separates and streamer comes out main fires the cable cutters for the main chute.
Thank you! And I had the same thoughts about a used IPhone but my phone plan currently is only android. If it doesn't need cell service I'm all in. I also was wondering if the aluminum av bay lids would mess with the signal.I think you did an admirable job on that fin can. Nicely done.
My vote on the tracker would be for the featherweight and grab yourself a cheap used iPhone off of eBay.
Getting a few altimeters and a tracker all in that coupler is a challenge but doable. I have an M2 myself.
Now go fly it fast and hard and report back.
Here some pics of the av bay. Pardon my french but trying to fit a camera, rrc2+, and a gps tracker into something the size of a toilet paper roll tube was the biggest pain in the ass. It took me weeks of CAD and one to many prototypes to come up with something that works but I think I finally did it.I think you did an admirable job on that fin can. Nicely done.
My vote on the tracker would be for the featherweight and grab yourself a cheap used iPhone off of eBay.
Getting a few altimeters and a tracker all in that coupler is a challenge but doable. I have an M2 myself.
Now go fly it fast and hard and report back.
That's definitely a clean ebay and I like the switch configuration a lot. I thought about not using a camera but I definitely wanted the rockets pov which is likely costing me a back up system. Thanks for the info on the av bay lids too. Great work!FWIW you don't need cellular service activated on the iphone for it to work.
Here is me cramming a few computers and a GPS in there. So far I've never had tracking issues with the aluminum bulkheads and its flown to 20k or so.
View attachment 462761View attachment 462762
You could fly once w/o camera and make sure you got the links worked out, then do a follow-up flight with a cameraThat's definitely a clean ebay and I like the switch configuration a lot. I thought about not using a camera but I definitely wanted the rockets pov which is likely costing me a back up system. Thanks for the info on the av bay lids too. Great work!
FWIW you don't need cellular service activated on the iphone for it to work.
Here is me cramming a few computers and a GPS in there. So far I've never had tracking issues with the aluminum bulkheads and its flown to 20k or so.
Yessir. Two full length metal threaded rods. Not ideal but so far I haven’t had issues. It’s probably flown 10-12 times and I’ve never had tracking problems.Nice. Are you using lengths of threaded rod to hold it all together? Any issues with the Featherweight GPS lying between two metal rods? I have a similar Mach2 ebay in the works, and I am considering nylon threaded rod.
For the featherweight, no plan is needed, just the phone. I have an iphone 6S that is in good condition (no cracked screen) that I would sell to you for $50 if you need one.Thank you! And I had the same thoughts about a used IPhone but my phone plan currently is only android. If it doesn't need cell service I'm all in. I also was wondering if the aluminum av bay lids would mess with the signal.
For the featherweight, no plan is needed, just the phone. I have an iphone 6S that is in good condition (no cracked screen) that I would sell to you for $50 if you need one.
That's a good idea and I think I am going to do that. I also found some hardware that would allow me to just barely run the altimeters stacked.You could fly once w/o camera and make sure you got the links worked out, then do a follow-up flight with a camera
Thanks for the information about the av bay Fred. I was wondering the same thing about leaving it open and right now I have that 3d printed window for a cover just tacked in place with CA. It's not that large of a hole and I thought it wouldn't mess with the altimeter readings but I could be wrong. I'm still waiting for the rrc2+ and the other electronics but once I get them I will calculate the proper vent hole size to make sure it works. The camera I found on another thread about runcam splits. It's pretty darn cheap for ok quality.https://www.amazon.com/Camera-Recorder-Fuvision-Portable-Recording/dp/B07GRRLCYSI didn't see it mentioned, but the camera lens bay opening, if no quartz or glass like window is used to make minimal extra air entry an issue, then this can affect correct baropressure readings and possibly cause a dysfunctional flight. If this is the case, then either add the window (e.g. see g. pitts recent posts on his camera-avbay) or recalculate the maximum vent hole cunulative size that enables your altimeters to function accurately. Alternatively, I prefer mounting cameras outside the AV-bay such as in the nose cone coupler or in the booster tube where altimeters are not a factor. BTW, what camera are you using?
Good luck,
Fred
I guess I didn't really think about that but I just thought this was the place where people would post their mach 2 builds and ask questions. I know it's a little late to post and if you want it removed I have no problem with that.Dan , I would suggest you make your own thread . One so everybody knows its a new build and not the same one from almost 4 years ago , and two because you are doing a nice job.
That's a real good deal but right now I am kinda split between the apogee simple gps. The new version tracks 6 miles with the stock antenna and I kind of like that I do not need a phone to use it. If the featherweight is really far superior to the apogee one I will go with that.For the featherweight, no plan is needed, just the phone. I have an iphone 6S that is in good condition (no cracked screen) that I would sell to you for $50 if you need one.
.I guess I didn't really think about that but I just thought this was the place where people would post their mach 2 builds and ask questions. I know it's a little late to post and if you want it removed I have no problem with that.
Thanks so much! Ya the sandwich method I used was the only way to make this thing work really. I used plain and simple reinforced pla. This stuff kinda looks like the granite colored filament but is infused with a reinforcer. Thanks for noticing how the battery is safe from punctures I had the same thoughts. I used a tiny whoop battery for anyone who is wondering (it's just a 4.1 volt lipo stick battery pretty much).D
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Dan - I really don't see any harm in putting all relevant info in the same thread. Some people get real touchy when old threads are revived. I revive old threads all the time. I get flamed almost every time I do it. However, I think keeping relevant info in the same thread is useful. I think it also reduces the Forum clutter.
If there is an existing thread on "GPS Units", I see no reason to create another one.
For example, look at all of the "COVID" and "EPOXY" threads that have been started on this forum. It seems logical to me to have a long running "EPOXY" thread with years of info and comments versus having to read each persons new "What kind of Epoxy Should I Use?" thread. Then you'll get comments like "...this question has been answered 1000 times on this forum...". You can't make everyone happy.
Nice build by the way. I like your "Sandwich" eBay edges and the placement of the LiPo battery. This keeps the battery secure and protects it from puncture. I have never seen that before.
What type of material is your eBay made from, and what did you use to form it? Is it cut, printed, molded, CNC?
Zeke
Thanks so much! Ya the sandwich method I used was the only way to make this thing work really. I used plain and simple reinforced pla. This stuff kinda looks like the granite colored filament but is infused with a reinforcer. Thanks for noticing how the battery is safe from punctures I had the same thoughts. I used a tiny whoop battery for anyone who is wondering (it's just a 4.1 volt lipo stick battery pretty much).
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