Screw this damn 85mm.

Even with 2”, 3.5” pitch tri-blade props, it doesn’t have enough thrust. These 11xx 6000kv motors just can’t spin up high enough to give me what I want on 2s.

This build could be good with some 11xx 10000kv motors, but I don’t have them. I’m working with what I’ve got, and what I’ve got does not want to fly well. It can do some gentle cruising just fine- but I need this bird to be able to fly proper acro.

The whole point of this build was to be able to do some igow challenges, and it can’t.

I mean, yeah, a big part of that is my lack of piloting skills- but it’s also the lack of power from this thing.

Bummer. Yeah higher kv would certainly give you that punch you're looking for. Just sucks dropping a bunch of extra cash on IGOW builds to keep completing challenges. I think I spent around 200-300 one year for igow. Lost one quad in a water tower and broke cameras, motors, fc's etc. Really tests your skills and puts you on the fast track for progressing because if you don't start figuring it out, you're fixing your stuff all the time.

Yeah, I don’t have the cash to drop on stuff. Thankfully I’ve got lots of spare parts, but, they’re not all ideal, and I’m burning through things pretty quick.

I am finally getting some actual flight skills though.

If I can find a c clip of the right size to reattach a bell, I think this 85mm is going to get my other set of Eachine 1104 7500kv motors. That, or I need to get ahold of proper sized m2 brass standoffs to use my 1103 8000kv motors. I needs more power.

You were talking about the durability of whoops,
I only have the cetus pro kit so can not join the IGOW which I really would like to but not able to record on the goggles. But the cetus pro is very solid and strong. I have beaten it up, slamming full speed into metal poles multiple times, falling from great heights, practicing diving through my basketball hoop rim and not pulling out soon enough and slamming into the cement, attempting powerloops and once again not pulling out soon enough and slamming into the ground. I have done all of these multiple times and it is solid, just a few scratches. It is not the best performance whoop and can not use betaflight but it definitely is durable.
Maybe you could build something on the frame of the cetus pro. I do not know how it compares to other whoops because I have never seen or flow any other whoops so if I am wrong well. . . my bad but it seems very strong to me.
The only problem if you did build something on that frame is that all of the mounts for the FC and other electronics are not super common sizes I believe.
The 85mm looks fun, are you flying it inside or outside?

I fly most everything outdoors only, except for that little 65mm brushed.

I haven’t found a prop guard or duct yet that I can’t break.

Thanks for the suggestion, I’ll check out the Cetus frame, but, if everything is a nonstandard size, that sounds like a frustrating build.

(10-May-2023, 01:54 PM)Doberman Fpv Wrote: You were talking about the durability of whoops,
I only have the cetus pro kit so can not join the IGOW which I really would like to but not able to record on the goggles. But the cetus pro is very solid and strong. I have beaten it up, slamming full speed into metal poles multiple times, falling from great heights, practicing diving through my basketball hoop rim and not pulling out soon enough and slamming into the cement, attempting powerloops and once again not pulling out soon enough and slamming into the ground. I have done all of these multiple times and it is solid, just a few scratches. It is not the best performance whoop and can not use betaflight but it definitely is durable.
Maybe you could build something on the frame of the cetus pro. I do not know how it compares to other whoops because I have never seen or flow any other whoops so if I am wrong well. . . my bad but it seems very strong to me.
The only problem if you did build something on that frame is that all of the mounts for the FC and other electronics are not super common sizes I believe.
The 85mm looks fun, are you flying it inside or outside?

Food for thought, but requires soldering so feel free to ignore.

Runcam DVR.  It solders in between the Camera and VTX (or if you are possibly smart you splice/solder a second camera out and send it to the DVR board, so if it fails for some reason mid air, you don't lose video.

So anyways.  $18 for a board that records your flights.  You need to do some soldering.  One wire to remote trigger (use buzzer + pad for this).  Then you will need one from the camera to the board and two to power it.

The downside is it only records in 480p.  The upside is it weighs very little and costs less than $20.  That is how you could do IGOW or just record your flights, for $18. 

https://shop.runcam.com/runcam-mini-fpv-dvr/

I’m officially done with that damn 85mm whoop build. In one crash that was caused by lack of power, I killed two of its ducts and another of those no name 1104 motors.

This thing has been more frustration than fun, so, it’s gonna get disassembled. I’ll chop up the frame and use its ducts as replacements for the ones I’ve broken on the BuzzBee98 build.

I still need to throw together a 75mm brushless or two. I haven’t been having much luck with those either lately, but, we’ll see what I can do this weekend. I think tonight is going to be primarily focused on flying, and then maybe some hot air repair. I’ve got 16x16 stack with a 6-in-1 esc that I really want to repair- I’ve had a GnarlyFPV 6 motor frame sitting on my shelf for a while that I’d like to put together.

Plus, if I wanna do a proper lightweight 75mm brushed build, I’ve got a couple HM diamond aio boards that would be ideal for it once I fix them. I think one lost a motor pad, I need to see if I can connect straight to a mosfet. The other one works fine except for the built in vtx- if I recall correctly, I accidentally knocked off a capacitor while soldering a while back, so that one should be easy enough to get back in the air. Maybe. These diamond boards are a couple years old and from when I was first starting to fly and build, so, who the bell knows what I did to them.

(10-May-2023, 01:54 PM)Doberman Fpv Wrote: I only have the cetus pro kit so can not join the IGOW which I really would like to but not able to record on the goggles.

I see that your goggles do not have a AV out jack but you can still record your flights...

The first link is a stand alone FPV receiver with a AV out jack.
The second link is a FPV recorder with a AV in jack. I use this with my Fatshark goggles because the DVR in the Fatshark goggles is a load of crap.
You may need to splice together a cable between the two, but it will allow you to record your flights even without goggles.

https://www.amazon.com/Wolfwhoop-WR832-W...647&sr=8-2

https://www.amazon.com/ARRIS-Goggles-Dig...635&sr=8-4

Oh, these all seem like good cheap option without buying new goggles!

brettbrandon, so if I went with one of the options that you recommended, how would I plug the jack into the goggle? Would I have to go into the goggle and solder something in the goggles? Because it only has a USBC port for charging.

Pathfinder, that seems like a good option too and when I get home from school today I am going to look at the pads and see where I would need to solder and see how big or small the pads are.(Never soldered on a board before only on plugs) Another thing is that the cetus pro can not pair to speedy bee or betaflight only the betafpv configurator. I do not know how that would work because it shows me needing speedybee on the website page for the mini dvr.

Thanks for the options!


Lemony, that is a big bummer about the 85mm whoop. Hopefully you can get some brushed and or brushless 75mm whoops built and running well!

(11-May-2023, 12:57 PM)Doberman Fpv Wrote: brettbrandon, so if I went with one of the options that you recommended, how would I plug the jack into the goggle? Would I have to go into the goggle and solder something in the goggles? Because it only has a USBC port for charging.

The goggles are not needed to record this way. The first item is a stand alone receiver. You would simply use a cable between the two devices listed. The first one receives the video signal and the second one records it.

Ohhhhh
Thanks for the confirmation. So I would need both of those items that you mentioned and I would plug the mini DVR into the wireless video recorder. That makes sense and thank you!
I think at the end of this summer I am going to get me either a tx16s and or that video recorder setup.
Thanks!

(11-May-2023, 12:57 PM)Doberman Fpv Wrote: Pathfinder, that seems like a good option too and when I get home from school today I am going to look at the pads and see where I would need to solder and see how big or small the pads are.(Never soldered on a board before only on plugs) Another thing is that the cetus pro can not pair to speedy bee or betaflight only the betafpv configurator. I do not know how that would work because it shows me needing speedybee on the website page for the mini dvr.

TBH, that's only if you want the remote trigger.  if you run it the other way, ie, solder a second wire to camera out and solder that to video in on the DVR board, then solder the power cables, as I understand it you could press the button on the DVR board to start and stop recording, ie, do it manually, just remember to stop it before you disconnect the Lipo, because it apparently records to Ram, then copies it to SD Card every 4 mins.  How you would mount the DVR board is also anyone's guess given how small the Cetus is. 

Ishould be less lazy and take apart the Cetus Pro I have in my drawer (that is broken).  From looking at the FC there are some pads you can solder to.  The 5 down one side are obviously for the video, but the eight other round ones I have no clue.  might be for soldering motor wires, but could be spare i/o pads too.  As you would expect from BetaFPV there is no manual or wiring diagram for this board. 

Oh, cool and thanks for the information! That sounds a little more simple and I now understand!
Thanks for the help guys!

Dober- another cheap option is this:
https://www.racedayquads.com/products/sk...gJswfD_BwE

Be aware that it will *not* work on an iPhone, but if you have an android phone or an android tablet, you should be able to hook it up and then just use a screen recorder app.

It’ll have too much lag to fly via a phone or tablet, but it should work just fine for recording video. You can also connect it to a windows laptop or desktop and record through there, as long as you don’t fly out of range.

Oh!
That seems like a easy cheap option! I do have access to a android phone and or windows computer.
Would it work with chrome? I think if anything I would go with that option and just use a screen recorder like you said.
Thanks