Matek also has some fc's that are 8s capable they even have one that's 12s ready. I want to see a 12s 5" lol.

Thats what i was about to ask some fcs come with it, or they are rated 8s like the T-motor f7 pro v2 it is rated for 8s

Lol GNB is out of control! Love that company 😂

But did you HV charge it, @joshuabardwell ?

8S on long range has no advatage over 6S. I did the math behind it. Lets assume we take the best li Ion cells I know: Molicel p28a (35A max) or p42a (45A max) You can fly them from 4.2V down to 2.8V per cell. Lets assume an average of 3.5V under load per cell. Everything is about weight and energy density on long range builds. So lets do this according to weight and power the LI Ion cells can deliver: 6s 18650 (~300g) : 3.5 V x 35A x 6 = 735W 8s 18650 (~400g) gives 980W 6S 21700 (~430g) gives 945W 8S 21700 (~570g) gives 1260W 6s2p 18650 (600g) gives 1470W Okay and now you can do the same calculation for the mAh in the cells or Wh. You will see all the numbers between 6s and 8s in are so colse together if you compare the weight and max power and total mAh. I could write very long on this, but just do the math yourself. Now you could argue you could the take for example 5000mah 21700 samsung 50s (35A max) on 8S and reduce the amp draw like this. But then you are still only able to output max 980W with heavy 570g 8s 21700 pack. I'd rather have the 1260W power with the lower capacity molicel p42a to pull out of a dive than losing my quad because I traded for more total capacity. Just my 2 cent

Actually, I basically agree. I reached out to both Foxeer and T-Motor to sponsor this build, and T-Motor ended up sending product. But if I had known the Foxeer had a built in regulator, I might have tried harder to use it. The Reaper is a great ESC.

And I have 8s hglrc esc and 8 S hakrc both in 20x20 whyever

or just get a Matek FC, most of them can handle 8S

@@andrewbt87 we are talking about esc!

@@andrewbt87 Does the matek have power output for camera? Only has a 5v 2a output, wont work with DJI o3 or something. Foxeer has 10v 2a output for camera. Why do you want to go matek in this case?

That's a good idea actually!

Yup, I go the Foxeer 30x30 stack for 8s. NO voltage regular required.

The rcinpower smoox 2306 1350kv was made for 6/7 inch prop I think they will suite good for 8s

@@adamseal eh, wont have as much pop as is possible.

@@FPVQuadModz what is the point of 8s than, you can buy 1900 or 2020 kv and have the same pop effect at the lower weight and price

@@adamseal clearly not lmao

I agree. But I'm surprised there was any gain at all, to be honest.

que tal funciona en 8s? hace deathrolls? tiene buen sonido de punch? velocidad maxima con gps?

I have an 8s build with xnova 2208 1500kv and find they work great. I can't tell if they are underpowered, but they have so much thrust on 8S. Maximum current draw on 8s is 120A. I figure some 6s builds draw ~150A. But I guess the whole 8S idea is to lower the current draw, reduce heat, have more thrust and go easy on the Lipo's. The only other 8s motors I can think of are the xing 2506 1500kv, flyfishrc 2506 1550kv and amax 2306 1500kv. I only tried the xnova 2208, but next are the amax 2306 1500kv.

maybe you have the wrong props

@@blup7352 Nope, I have the same props mentioned in the companion Rotor Riot 8S video. HQProp J40.

@@tlj4999 ok idk

I'm curious how that 1350 kv works. Your rpm should be similar to "normal" range which makes me wonder if the advantages of 8S are as pronounced.

@@JoshuaBardwell I built towards maximizing motor and prop response. The 1350kv hit the 450mph prop tip speed sweet spot for the 4.8-4.9" props that match the "ideal" disc loading for around 600g sine I choose to just use the 03 for recording. Obviously I subscribe to CR as well but the quad rips so something is right. My hover is around 1310 throttle on gf4934's

IMO it's too big for 5" props but what's a little additional weight?

@@JoshuaBardwell stator volume less than 2208 but more than 2207.5. Maybe better for 5.2-5.5 prop size over 4.9-5.1. They are same size as the fpvcycle motor, which some people still like for 5inch.

kV too low

Yep quite a few actually Matek has multiple then Foxeer, Rushfpv and Brainfpv all have one as well. One of the Matek is even good up to 12s.

I have a 3.5 aos with 6s. Holy it is a monster, will upload some stuff soon ^^

Good point! I suggest the ISDT Air8 bit.ly/3MdepEh

I didn’t even think of that when I ordered the parts and batteries. Darn it lol…I gotta buy a new charger now too🙄

Or cheap out and put 2 4s in series. boy wouldnt that be ugly to fly on a small frame

@@Mupshot yeah, I TOTALLY plan to do that as well. I have a bunch of old 5" sized 4S batteries, that never get used for anything. That being said, along with all of the build parts, I ordered (1) 1100mah non-HV 8S...then when I realized I couldn't even charge the darn thing, so I went back an ordered the ISDT Air8, along with another 1100mah 8S(so now I have 2). Needless to say, It got expensive REALLY quick. Especially for something that doesn't serve much of a purpose, other than being cool as SH$!

A digital vTX can pull as much as 10 or 12 watts. If you're sure you'll stay under 20 ish watts them you could use a smaller regulator. I like to have a little headroom.

@@JoshuaBardwell Ohh that explains it. I keep forgetting everyone flys digital now, derp. Have you considered plugging it to the balance port though?

I agree 😊

Holy cow you're right! You can select LiHV 8S but as soon as you plug in a battery, it immediately goes to LiPo. The highest you can go is 4.30 volts on standard LiPo program. Geez. I'm sooooo opposed to ToolkitRC chargers though. I have blown up so many of them.

@@JoshuaBardwell Gaoneng suggested ToolkitRC M9. ISDT support ignored the issue.

You could probably get away with that but I kind of don't like it on principle.

I have the ISDT Air8. It charges 8S but not 8S HV. I also used the ToolkitRC M8, but I've blown two of them up so I kind of don't want to spend another $50 on another one.

@@kaygeebee1962 seriel*

Oh no. My career. What will I do.

I recommend the ISDT Air8 charger.

ISDT PC-4860 is a 4 battery 8S parallel charging board that I have had and loved for some time now. But 80% of my 8S builds the past year have been with 2 XT60s (or XT30s for the 3-4” builds) in series and I have had a very good experience with just running 2X 4S batteries. 1. Way easier charging to 4.4V/cell! 2. Keeps everything much cheaper and simpler. 3. Also lighter as you can use smaller batteries! I use 300-450mAh for 3-4” and 550-850mAh for 5-6” I wish I didn’t get 8S chargers and stuff, it was a waste of time and money.

nevermind, I see you made a comment mentioning it.

1100 kv will be fine at 8S voltage.

Because HDZero Freestyle vTX didn't fit in the frame.

Yes you can.

@AndyParisod im sure you have the answer to your question by now but I decided to try this out!I ordered all the parts and the battery and then I realized my charger only goes to 6S lmao! So, of course, I went and spent $300 on a new k4 charger and parallel board lol, but now I realize I could just use 4S lipos and made myself a series connector with 3 XT-60'S and some 12 gauge! I've been taking cells out of my 6S packs with a dead cell and have made a few 4S packs. Anyway, just thought I'd let you know my experience so maybe you can save some money if you try this.

@@OTRFlyer Cheers buddy, as I'm stil flying 4S I'm might jump straight to 8S.

It's possible, but you would definitely want to lower the kv to bring the rpm back closer to normal range.

The Volador frame that I have only had press nuts on the 30mm holes. The 20mm holes didn't have press nuts.

@@JoshuaBardwell Ahh. I see. Wait!? You opted for a 20x20 stack when it had space for 30x30? lol I missed that in the video and assumed since it was a JB build it had 30x30 😀

The T-motor 8s esc is a 20mm. Weird!