RunRyder RC
WATCH
 2 pages [ <<    <    ( 1 )     2     NEXT    >> ] 1224 views POST REPLY
HomeAircraftHelicopterHelicopter Main Discussion › Reciver switch
01-19-2015 01:34 PM  3 years agoPost 1
Cobra 46

rrKey Veteran

Cambridge il usa

My Posts: All  Forum  Topic

Anyone use a switch inline on the reciver bat anymore I know this is a practice from yrs past. If you do. What brand ?

PM  EMAIL  GALLERY  Attn:RR  Quote
01-19-2015 01:45 PM  3 years agoPost 2
MattJen

rrElite Veteran

UK

My Posts: All  Forum  Topic

I use a switch for power to Rx normally as I fly futaba I use the futaba heavy duty switch.

But it probably does add a point of failure which is why nowadays with good constant voltage it's probably not needed.

But I always have used one and on my big models I will have 2 for redundancy..

matt

All The Best

PM  EMAIL  GALLERY  Attn:RR  Quote
01-19-2015 01:57 PM  3 years agoPost 3
jackp332

rrKey Veteran

Claremont, Nh USA

My Posts: All  Forum  Topic

I do. Just habit from when I built my first rc planes as a kid I guess. I have the JR heavy duty switch on all of my helis. I use dielectric grease and heat shrink all my battery connections so they are not removable. Also, I put my switch between the battery and regulator so they do not drain my battery while in storage.

PM  EMAIL  GALLERY  Attn:RR  Quote
01-19-2015 02:00 PM  3 years agoPost 4
G-Limo

rrApprentice

Europe

My Posts: All  Forum  Topic

Switching inline with a NiCd as opposed to using a Lipo??

Either way, the Futaba 'servo' plug on the NiCd has a limited insertion life of multiples of tens or hundreds before the tension of the contacts starts to go. A servo is typically only plugged/unplugged a couple of times, so this doesn't become an issue!

Once the spring has gone out of any battery connection, a stable battery voltage at the receiver, under heavy load can be a problem leading to brownouts.

A Heavy Duty switch on the other hand is designed to be operated more than thousands of times.

I have seen remarked that switches that are single point of failures, but are still not as fragile as plugging a battery in and out. If you are using a Lipo, their connections may be more robust, but always check the insertion force and replace them when they get soft or burned.

DG

PM  EMAIL  Attn:RR  Quote
01-19-2015 02:00 PM  3 years agoPost 5
Ace Dude

rrProfessor

USA

My Posts: All  Forum  Topic

I'm using a Futaba heavy duty switch.

  

PM  EMAIL  GALLERY  Attn:RR  Quote
01-19-2015 02:52 PM  3 years agoPost 6
Rudy

rrVeteran

Houston TX/Bend OR

My Posts: All  Forum  Topic

Flying a Gas or Nitro ship then yes how else would you shut off the RX pack.

Flying a large electric ship with a RX battery pack, YES again how else would you shut it off other wise when not flying.

Flying a smaller electric with no RX pack, power comes from Flight pack and BEC. No switch just remove main pack.

Switch failing, yep i guess it could happen but in 30 years I have NEVER had it happen to me. But then I buy good gear and NOTHING from hobby king is on one of my helicopters.

Rudy Ackerman Houston TX/Bend OR

PM  EMAIL  GALLERY  Attn:RR  Quote
01-19-2015 03:30 PM  3 years agoPost 7
MattJen

rrElite Veteran

UK

My Posts: All  Forum  Topic

yep i guess it could happen but in 30 years I have NEVER had it happen to me

Appreciate you may have flown for 30yrs, but what does equate to in flying hours, I have known people that have flown for the same amount of yrs but only fly their models 2 or 3 times year.

In my prime I was clocking up 200hrs a year when comp flying and helping out in A/P which is a lot of wear and tear, I have seen a few of the early ones fail which admittedly was down to poor building from flyers and mostly on planks,which was why for my own piece of mind I always used the Heavy Duty ones, Futaba or JR.. and touch wood, I have not had a failure.

It was only on my big 1/5 and 1/4 scale models I was recommended to have redundancy due to the size and money invested in those machines.. the guy that taught me from beginning nearly 15 yrs ago said "If its good for full size to have redundancy then it does no harm for your big models to have them either." totally unnecessary on 90 size machines I will admit.

Edit
I mean no offence by my post either..

All The Best

PM  EMAIL  GALLERY  Attn:RR  Quote
01-19-2015 04:08 PM  3 years agoPost 8
ssmith512

rrKey Veteran

Indianapolis, IN USA

My Posts: All  Forum  Topic

I use a perfect regulators safe switch. If the mechanical switch fails, it fails in the ON position.

Steve

PM  EMAIL  GALLERY  Attn:RR  Quote
01-19-2015 04:19 PM  3 years agoPost 9
Jim Cimino

rrKey Veteran

NE Pennsylvania

My Posts: All  Forum  Topic

I have switches on the receiver of all my heli's except the little ones that us a bec. If you have a bec, then you may not want one, but some ESC's have a switch for the receiver. I use a separate battery for the receiver on my large electrics and a badger switch from Fromeco...I have never had a switch failure.

http://www.fromeco.org/categories/Switches

Team Synergy, Team Scorpion, No good deed goes unpunished

PM  EMAIL  GALLERY  Attn:RR  Quote
01-19-2015 04:20 PM  3 years agoPost 10
Aaron29

rrProfessor

USA

My Posts: All  Forum  Topic

Futaba HD between my Nicad (yes these actually work, still) and servos on my SDX.

I buy a new switch every year (my heli gets a lot of use). The old one goes into a non-heli plank application and the new on goes in. That way I get "two years" out of a switch.

If you are a casual flyer you might get two years.

Basically once wires start getting hard from age/nitro exposure, they become a liability.

PM  EMAIL  GALLERY  Attn:RR  Quote
01-19-2015 04:25 PM  3 years agoPost 11
Aaron29

rrProfessor

USA

My Posts: All  Forum  Topic

have seen remarked that switches that are single point of failures, but are still not as fragile as plugging a battery in and out
+1

If a battery uses EC3/5, then OK, just keep an eye on connector condition. But if you are plugging/unplugging a standard Futaba/JR battery lead every flight, I would argue to get a switch instead. Any tiny risk encurred from a switch is outweighed by the fact that you are getting rid of a lot of wear/tear on the connection that WILL cause a failure eventually.

PM  EMAIL  GALLERY  Attn:RR  Quote
01-19-2015 08:10 PM  3 years agoPost 12
LaDon

rrVeteran

Fort Dodge .Ia

My Posts: All  Forum  Topic

We don't use switches on any of our helis. We use Ec3 connectors and I make the connector setup to plug into all the radio gear. That way the only failure point could be at the Ec3 connector and in several years that has never happened. I have seen switch failures tho. One friend bought a fail safe switch and had it on his Heli for two weeks and failed. Lucky that it happened on the bench tho. I think it was a wolverine switch if I remember right. Having to plug the receiver pack in also makes it to where we have to take the canopy off so we look things over a little more. You can go either way it will all work

Team Jr

PM  EMAIL  GALLERY  Attn:RR  Quote
01-19-2015 11:57 PM  3 years agoPost 13
Cobra 46

rrKey Veteran

Cambridge il usa

My Posts: All  Forum  Topic

Ya they are the jr ends from the two cell lipo to the receiver. They are 20 gauge and very small for the ec3 ends I would think ,, I am plugging them in and out each flight and I am afraid they will wear out. I would like a switch I can mout to the frame outside the canopy on the farme . I can then walk with the Heli receiver off and not have to worry about bumping the radio accidentally.
I would like to have the lipo for the motor plugged in and walk out to pilots box. ( my back yard ) and then switch on the receiver.. I wouldn't think this would be dangerous!! Any comments welcome .

PM  EMAIL  GALLERY  Attn:RR  Quote
01-20-2015 03:09 AM  3 years agoPost 14
Aaron29

rrProfessor

USA

My Posts: All  Forum  Topic

If that's the case, tiny wires with big connectors, I'd be worried about strain relief.

PM  EMAIL  GALLERY  Attn:RR  Quote
01-20-2015 03:22 AM  3 years agoPost 15
Cobra 46

rrKey Veteran

Cambridge il usa

My Posts: All  Forum  Topic

Ya. There's no best way for anything I'm figuring out .

PM  EMAIL  GALLERY  Attn:RR  Quote
01-20-2015 03:26 AM  3 years agoPost 16
Aaron29

rrProfessor

USA

My Posts: All  Forum  Topic

Make sure your failsafe is set up correctly if you going to do it that way. It's not really intended to work that way.

I still don't understand why more people don't just use a BEC.

PM  EMAIL  GALLERY  Attn:RR  Quote
01-20-2015 03:37 AM  3 years agoPost 17
Cobra 46

rrKey Veteran

Cambridge il usa

My Posts: All  Forum  Topic

Humm. Good thought. Thanks

The esc that came with the Heli didn't have a bec its a ice2 hv120
But the new esc I'm putting in it does !! Kosmik 160hv. That deal came up after I started this thread.I forgot about that ! Back to the drawing board well thanks for the help all. I have a good understanding of what's safe and what's not !

PM  EMAIL  GALLERY  Attn:RR  Quote
01-20-2015 03:39 AM  3 years agoPost 18
dkshema

rrMaster

Cedar Rapids, IA

My Posts: All  Forum  Topic

With the trend towards high speed, high power, digital servos, flybarless heads, and receivers that are totally microprocessor-based, many of the "old school" ideas are no longer practical.

The inline switch, whether it be the venerable DPDT NOBLE switch (which was THE standard in days gone by), or the heavy duty JR and Futaba harnesses, no longer belong in a current, modern heli. In general, their connection wires are too small gauge to handle the peak currents well without serious voltage drops, the single, standard servo connector is good for only up to about 5 amps, and the switch contacts themselves have serious losses, especially after they see some use and get dirty.

If you need a switch, then one of the current regulators on the market that use a "soft-switch" are the way to go. The switch itself handles little or no current, as that duty has usually been relegated to a high-current capability FET or BiPolar transistor. The down side of these newer regulators is that in the "OFF" state, they still require a small amount of battery current to work. If you leave your heli for awhile with the switch "OFF", you may come back a while later to find your battery dead, dead, dead. The solution here is to unplug the battery for longer term storage.

-----
I would like to have the lipo for the motor plugged in and walk out to pilots box. ( my back yard ) and then switch on the receiver.. I wouldn't think this would be dangerous!! Any comments welcome .
Seriously? Fully armed and ready to go, but not dangerous. Wouldn't take much of a glitch somewhere along to way to bring that motor suddenly to life.

-----

Try this -- set your transmitter THROTTLE HOLD such that when engaged, the ESC is set to a state where the motor CANNOT start. Plug in your battery, engage HOLD, carry your heli to the pad, set it down, move away to a safe distance, and at low throttle, low trim, turn HOLD off. Goose up the throttle as you normally would, go fly.

-----
Dave

* Making the World Better -- One Helicopter at a time! *

Team Heliproz

PM  EMAIL  GALLERY  Attn:RR  Quote
01-20-2015 03:49 AM  3 years agoPost 19
Cobra 46

rrKey Veteran

Cambridge il usa

My Posts: All  Forum  Topic

Ok I get that. But all the servos go through the receiver and those are all 20gauge at best . I have a bec on my 570 and it has two power supplys 12 receiver and one to fly bar less controller : but it's not that way with esc with no bec. .. Should I there be two supplies from the Lipo one to The receiver and one to the FBL controller?

PM  EMAIL  GALLERY  Attn:RR  Quote
01-20-2015 03:50 AM  3 years agoPost 20
Aaron29

rrProfessor

USA

My Posts: All  Forum  Topic

Basically your biggest foul is you are relying on your ESC to not power things up. Sure, most ESCs won't power up without a throttle signal. But, do you really want to test that function of your esc? And use it as your sole failsafe? With nothing else in the control loop?

It's your heli and your arm carrying it. Just worried for ya.

PM  EMAIL  GALLERY  Attn:RR  Quote
WATCH
 2 pages [ <<    <    ( 1 )     2     NEXT    >> ] 1224 views POST REPLY
HomeAircraftHelicopterHelicopter Main Discussion › Reciver switch
 Print TOPIC  Make Suggestion 

 6  Topic Subscribe

Monday, October 22 - 6:20 am - Copyright © 2000-2018 RunRyder   EMAILEnable Cookies

The RC discussion world needs to consolidate. RR is now one choice for that. Its software is cutting edge. It hosts on-topic advertising. Help RR increase traffic buy making suggestions, posting in RR's new areas (sites) and by spreading the word.

The RunRyder Difference

• Category system to allow Rep/Vendor postings.
• Classifieds with sold (hidden) category.
• Classifieds with separate view new.
• Answer PMs offsite via email reply.
• Member gallery photos with advanced scripting.
• Gallery photo viewer integrated into postings.
• Highly refined search with advanced back end.
• Hosts its own high end fast response servers.
• Hosts thousands of HD event coverage videos.
• Rewrote entire code base with latest technology.
• No off-topic (annoying) click bait advertising.
Login Here
 New Subscriptions 
 Buddies Online