Ultra light 5" build - Page 3 - RC Groups
Thread Tools
Mar 13, 2017, 02:50 AM
humayraykinaon's Avatar
Looks like your build is coming along sooner than I thought

On the other hand, BG didn't take long to have this
http://www.banggood.com/Micro-20x20m...ds=newArrivals
Sign up now
to remove ads between posts
Mar 13, 2017, 03:54 AM
IKNOWNOTHING
Quote:
Originally Posted by humayraykinaon
Looks like your build is coming along sooner than I thought

On the other hand, BG didn't take long to have this
http://www.banggood.com/Micro-20x20m...ds=newArrivals

Thats great, really hope its reliable though as its quite a demand on something so small
Mar 13, 2017, 06:59 AM
Registered User
Yeah now wish I had waited, since that supports blheli_s and dshot but who knows how long before its in stock and order-able.


Quote:
Originally Posted by estho
Thats great, really hope its reliable though as its quite a demand on something so small
Mar 13, 2017, 10:41 AM
Registered User
Well i was about to pull the trigger today and buy the XJB but now i am not sure...
Mar 13, 2017, 10:49 AM
humayraykinaon's Avatar
Quote:
Originally Posted by estho
Thats great, really hope its reliable though as its quite a demand on something so small
I sure hope.so, this one seems to not have a company name like Racerstar or Eachine I'll wait until someone who can prove it's reliable enough.
Mar 13, 2017, 10:50 AM
Registered User
Looking at the weight of the 12A it is 13g which is till considerably more than the XJB. I bet the 20A will at least be in that range which makes me wonder what is this XJB really rated for...
Mar 13, 2017, 11:09 AM
humayraykinaon's Avatar
I have good luck with Racerstar esc and they are coming out with 12a soon.

http://www.banggood.com/20x20mm-Race...ds=newArrivals
Mar 13, 2017, 02:45 PM
Registered User
Just snatch a set of Hyperlite V2 Team Editions 2205 - 2522kv... Should have plenty of power at a bit of a weight disadvantage but at 25g its not too bad. I am a bit worried that these will overpower the XJB 4in1
Mar 13, 2017, 02:45 PM
humayraykinaon's Avatar
Quote:
Originally Posted by transam2k4
Looking at the weight of the 12A it is 13g which is till considerably more than the XJB. I bet the 20A will at least be in that range which makes me wonder what is this XJB really rated for...
It's funny how this 4in1 esc can weight much than this 30.5x30.5mm AIO FC/vtx
http://www.banggood.com/Flytower-F4-...ds=newArrivals
Mar 13, 2017, 07:11 PM
Registered User
Quote:
Originally Posted by transam2k4
Just snatch a set of Hyperlite V2 Team Editions 2205 - 2522kv... Should have plenty of power at a bit of a weight disadvantage but at 25g its not too bad. I am a bit worried that these will overpower the XJB 4in1
I doubt it will, I think the XJB is probably a little over rated but not by that much it is doublesided and with how small some 20a escs are today its not that out of question that they crammed all of the components from 2 on each side of it.
Mar 15, 2017, 04:09 PM
Registered User
Frames arrived today, getting closer.
Mar 15, 2017, 04:31 PM
VicRC
A 200 gram 5" would be amazing, lowest I have is 290
Mar 15, 2017, 08:41 PM
Registered User
Quote:
Originally Posted by fw190
A 200 gram 5" would be amazing, lowest I have is 290
It has already been done. Check OsburnFPV's YT channel. He uses the RFX185 frame and BrotherHobby 1407 motors with 5" props. Total AUW(minus Lipo) was 173grams. If Op is running 21.5g motors and ran the same set-up as OsburnFPV, then his quad would be 197grams AUW (minus Lipo).
Mar 15, 2017, 08:42 PM
Registered User
Quote:
Originally Posted by DMCfirestar500
Frames arrived today, getting closer.
Where did you get your 21.5g motors?
Mar 15, 2017, 10:20 PM
Registered User
Quote:
Originally Posted by FootFungus
Where did you get your 21.5g motors?
Found them used (well used for 2 batt packs). But you can still get them new online (although not cheap) they are Lumenier RB2204-13 2500KV Skitzo motors.


I spent some time this evening opening up one of the frames and sanding some of the sharp edges off of the CF parts not sure if I'm going to bother sealing them with CA glue. I also noticed that for whatever reason they included somewhat heavy alloy screws with the frame so I'm swapping them out with slightly lighter alloy screws I had. I may go aluminum or plastic eventually for some but I'll judge that during the actual build and/or after a flight or two to see the weak points. For now I shaved an extra 1.35g... every gram counts


Thread Tools