START HERE |
|
Register | FAQ | PM | Events | Groups | Blogs | Calendar | Mark Forums Read |
Unregistered
|
Mikado V-BAR Mikado V-Stabi/V-BAR Flybarless System Software and Hardware Support |
|
LinkBack | Thread Tools | Display Modes |
03-05-2017, 05:40 PM | #1 (permalink) | ||
Registered Users
Join Date: Jan 2014
|
maximum current amperage for neo?
Does anyone know the maximum current that neo's power system can stand?
I have 3 futaba bls172 servos and 1 bls276 for my forza700 converted 800. According to a youtube test, each bls172 can draw up to 6.5A.
3 x 6.5A + 2A for bls276 = 21.5A max. I understand that 700-800 class helicopters will never draw this much current. But worst case scenario if the helicopter crashes and force the servos in a mechanical binding position, they will draw this much current. Will 20-25A current burn out a v-bar neo? As a comparison, brain 2 has an HD version that integrates a stronger power circuit and use a special power plug to endure larger current.
__________________
Forza 700/450, E12 Ito, E6-550, Logo 600SE with Futaba electronics, Oxy3 Qube 285mm stretched; all kinds of blade micro helis on DX8 Last edited by amphibia; 03-05-2017 at 07:24 PM.. |
||
Sponsored Links | |||
Advertisement |
|
03-05-2017, 06:55 PM | #2 (permalink) |
Registered Users
|
anything can happen.
i have crashed hard with neo and mks hv servos and my neo is still good. the scenerio you are talking about would be highly unlikely. links woud pop off.
__________________
you should look into it........... |
03-05-2017, 07:22 PM | #3 (permalink) |
Registered Users
Thread Starter
Join Date: Jan 2014
|
I understand the likelyhood. What I cannot find info on is the max current vbar neo circuitboard can endure. 20A? 30A? 50A? So I can calculate the safety margin.
__________________
Forza 700/450, E12 Ito, E6-550, Logo 600SE with Futaba electronics, Oxy3 Qube 285mm stretched; all kinds of blade micro helis on DX8 |
03-05-2017, 09:11 PM | #4 (permalink) |
Registered Users
|
I use the exact same servos on two helicopters and according to logs the BEC in speed runs easily tops 20A, never had a hint of a problem. I do run two power leads made up with 20 gauge wire, but the bottle neck is still the servo plug which is rated for 3A continuous.
Don,t over think it, building a heli to be crash resistant is not possible.
__________________
Henseleit TDR, TDR2, TDF, TDS, TDSF Kontronik, Scorpion ESC, iChargers, VBar, VControl Old hand at Planks Peter |
03-05-2017, 09:41 PM | #5 (permalink) | |
Registered Users
Thread Starter
Join Date: Jan 2014
|
Quote:
I totally agree that servo plugs have more concerns than vbar neo itself. I guess nobody experienced neo meltdown due to large current draw. That is good enough for me. To address the plug 3A limit, I do use two 2s2250mah LiFe batteries to power any 700 system. I want to distribute the incoming current load to two plugs and two batteries for redundancy. I will stick to this plan. However I read there is another safer option: 1. Build multiple Y split connections. Take the red and black leads from all 4 servos and connect these directly to the BEC/Lipo pack, head shrink wrap individual lead male and female without using plastic plug to avoid melting. 2. One set of red/black from BEC/Lipo pack to the neo just to power neo and the receiver. 3. Only the white and the splitted black leads from the servos go to vbar neo for signal 4. With proper headshrink around each lead, very few bulging plugs to destroy the simplistic look.
__________________
Forza 700/450, E12 Ito, E6-550, Logo 600SE with Futaba electronics, Oxy3 Qube 285mm stretched; all kinds of blade micro helis on DX8 |
|
Thread Tools | |
Display Modes | |
|
|