rmh

the real bottle neck --the friggen crimped ends
a dual path of stock genuine JRHD leads into the rx is plenty for stuff up to 33%. and genuine JRHDswitches

All the high buck power splitter / blender /increaser / switcher/balancer etc- is just a high priced method of doing the job.
I think we are right at the edge of some really simple setups which will do the job - based on looking at components whch can handle high loads. They are very inexpensive -but as long a peopleare afraid to solder --------------

rino

My Feedback: (121)

Yep. Crimped ends are the blight of the hobby. I think it would beyond cool if an rx had dual power inputs with a locking high-current plug.

Is the JR stuff crimed and soldered? I didn't know it was any different. I called HH and asked them what guage their heavy duty extensions use and as is typical they didn't know and couldn't find the information. It looked 22 g to me on both their servo leads and the wire on the HD switch.

rmh

all hd JR is 22ga a very careful solderjob can be done on the crimps but you can easily ruin em too.

rino

My Feedback: (121)

I read in DX6i manual that crimps were good for 5 cont. and 8 burst. I wonder how much more you can get by soldering them. I think, I might be off here, that 22 guage will do 7 continuios. I've seen slightly different ratings on different sites though. If you can get a couple of more amps out of those connectors by soldering I think it would be worth it.

rmh

I don't pay any attention to those figures -- Do this make up a discharge setup which will feed 4-+ amps thru a pigtail/whatever

Simply feel for heat- the heat is ALWAYS at point of high resistance
I never got the wires warm in any of my checking -but the connections?
Always
Each one of those light bulbs (1157)- will pull 1.75 amps -or so -

if you had 2 of em paralleled-that would be 2 x 1.75= 3.50+ amps -rough estimate - who cares -
anyway -with this kind of a very simple setup -you can add bulbs (in parallel to INCREASE load on cells and if you are feeling frisky add more bulbs till the wires have MORE resistance than the bulbs and then--- the wires melt-
You get the idea - I am sure - With your meter you can read voltage drops under any load you choose -
I found -with the setup shown --- 1/2 hr was a full use of the 2 cell pack (effective use of 2000ma at an aprox 4 amp load )
I ran these tests over n over always same results and always only real heat --the friggen crimped connectors.

rino

My Feedback: (121)

That's hard enough data. Nice.

rino

My Feedback: (121)

Here is some good info I got from EMS on their HD switch harness which uses 22 guage wire:

"he switch uses #22AWG wire. The limiting factor is not the switch but the contacts within the connectors in all the R/C systems. 6 AMP steady state is certainly safe. Your could double that in a surge. The switch contacts will handle much more than that."

I thought this was encouraging as their switches are nicely done at a resonable price.

Here is the winning combo...

Always use 20 or 22 guage leads - solder the connectors for better throughput
Use A123 batts or 20C nimh batts - NO SANYO (my opinion as there is way better stuff out there and Sanyo cells do not deliver the amps)
For 4 - 6 standard servos you need a single power lead into the rx
For 6 or more servos or if you are using 200+ ounce/inch beasts you really need to reevaluate the number of power leads into the RX and make a determination based on testing.

rino

My Feedback: (121)

Dick,

Under the test described above did the connectors get smokin' hot or were they just warm to the touch. 4 amps at 6 volts certainly shouldn't melt them.

rmh

just pretty warm- which is enough to establish that they are a restriction.

BocaBen

The corrosion in the crimp is also a reason of concern.
I could not hold knife edge on my 33% Extra and trace the problem to one of the switch connector being corroded.
Since then, I use A123, double all my cable from the battery to 2 switches and into the Rx.
Most importantly, all the connectors are reduced to a minimum and the ones remaining have the crimp soldered.

rmh

Yeh --that connector has outlived it's usefullness for contemporary models
Few seem to remember the dreaded " black" wires -- I found some -- and the fact that servo abilities were typically in the order of 40 in ounces of torque--
The new Spektrum "rx" which has a large direct battery connector and an internal contact is quite a step up in the necessary evolution- for high power consumption models .

collectivepitch

My Feedback: (13)

well finally had good weather to try my setup today. well i moved the remote rx futher back and it worked all day. now to buy some more for other planes.

collectivepitch

My Feedback: (13)

well finally had good weather to try my setup today. well i moved the remote rx futher back and it worked all day. now to buy some more for other planes.