Flightcrew

Hey y’all. I’m thankful for this thread.

Ive read through the thread and I must have missed something, so I’m hopeful that someone can help me figure this out.

I can can set up the LG-15 with 3 wires from the Spektrum RX and everything works great. However, I would really like to set it up via the SRXL single wire. However, when I set up the radio (gear up, gear down, no brake, max brake), I get an error message that the endpoints need to be a minimum of 100 (something apart - I cant remember here at bedtime).

I‘ve got the LG-15 in Bus mode (& tried different protocols), the SRXL wire is plugged into the Gear In port, the channels are selected within the LG-15 for each function, the travel on the DX-18 is at 100%, and all components are connected.

What am I missing?

scoeroo

My Feedback: (9)

Interesting -

bodywerks

My Feedback: (4)

Call me old school. I still use PWM. Can't help you.

LenAlessi

My Feedback: (1)

Increase the travel of the channel. Since Spektrum uses +- 150% you may need to crank it up to 125% or more to have equivalent travel of another radio that only goes to 125%.

Flightcrew

Len,

You know, I tried to increase the travel on the gear channel to the maximum above 100%. Maybe I can try it on both gear and brake. I’ll report back later today.

Thanks for the try everyone.

Flightcrew

Well, I placed both the brake and gear channels up to 150/150. Ran the setup and I got the error message again. Oh well.

I went ahead and installed everything with the 3 wire setup and it works great.

bodywerks

My Feedback: (4)

When you order the LG-15, does it come with the mpx connector? Want to know because my first one didn't and it seems like it should have. Luckily I had ONE. But I'm about to order another controller and if it indeed does not come with one I need to know so I can order some.

Flightcrew

Mine did not come with the MPX connector.

I saw this as an opportunity to order more stuff from Amazon. I got a whole bunch of connectors and soldered up my own power wire for cheap. Now, I can make as many as I want. 👍😃🤪

Also, while you place your order, order up some JR servo connectors (the kind where you can make your own servo leads). Like others here, I removed the plastic 2 pin from the JP wires and slid them into the 3 wire JR male connector.

bodywerks

My Feedback: (4)

Already have servo connectors. Just doesn't make sense that they don't include such a specialized connector. Guess I'll get some ordered...

Dansy

My Feedback: (53)

MPX are extremely common connectors.....at least for us Jeti and PowerBox guy’s.....

bodywerks

My Feedback: (4)

It's really more of a European common connector, and not a common or preferred connector for us Spektrum folks. Also don't get why they use a 6 pin connector for a simple +/- circuit.

Dansy

My Feedback: (53)

lol

camss69

My Feedback: (46)

It’s common to anyone not running Spektrum lol..

Tip22v

I think the purpose of six pins for just +/- is that three of the pins are combined for + and the other three are combined for -, this allows for higher current through the connector.

bodywerks

My Feedback: (4)

JP controllers use like 20-22 gauge wire and a jst connector without issue, and I soldered 20 gauge wire to my first LG-15 controller connector without issue. If current was the reason, why not an xt30 or xt60. Way easier to solder, too, than trying to strand a single 22 gauge wire three ways.

Dansy

My Feedback: (53)

One thing won’t change...you want to use a LG15....then you need the MPX connector LOL

camss69

My Feedback: (46)

I like to use these for MPX connectors.

Multiplex Connector Solder Couplers Power (2)

Dansy

My Feedback: (53)

that is all I used, even change my KingTech to those

Tip22v

I have a number of PowerBox units so I’m used to using the MPX connectors, I use the little solder boards made by Emotech, makes soldering them much easier. I also use the MPX connectors to make single connectors for my wings, everything in single connector is nice (they make them in an 8 pin config also)

winter1

Buy only original MPX / Multiplex connectors. They can withstand higher current loads, have reliable contact and longer service life. They're a little more expensive.
https://www.multiplex-rc.de/produkte...ade-in-germany
https://www.hacker-motor-shop.com/mp...=A85001&p=9241
Multiplex Connector Solder Couplers Power (2)
https://www.lindinger.at/en/rc-elect...TIPLEX&first=0
https://www.lindinger.at/en/rc-elect...ent-connectors

***winter***

Original-older type

Original-new type

Copy

scoeroo

My Feedback: (9)

+1 on watch out for cheap imitations -

Len Todd

As stated before, three connectors for each side of the circuit does add to the current capability. The three contacts for each side of the circuit also helps to preclude the potential for a bad connection and also makes for a much more physically solid connection. Powerbox got me to using them a long time ago. I keep a stock of female and male MPX. I like to use them when I want to make sure that the power will not be disturbed.

I never have had a problem soldering wires direct to an MPX. Seems to me that adding in another set of soldering points would make the connection larger, heavier and less flexible and there could be more potential for a cold solder joint. I have seen foils lift off circuit boards in high current applications. Once a foil lifts, it soon breaks and frequently creates an intermittent circuit. But I have never tried one of these adapters, so maybe it might not happen here.

These added boards look like they are kind of adding a extension/lever to the connector, which could be an issue in confined space areas. Also seems like the leverage on the connector could be increase the likelihood for an inadvertent disconnection. For me, KISS seems to always prove best. But, … to each their own.

camss69

My Feedback: (46)

That’s a good idea and I think I will do the same on my next plane. I have a buddy that just lost a plane due to a corroded Deans connector on his ECU battery connection.

Dansy

My Feedback: (53)

I was playing a little with my GS200 (same as LG15) with a set of electron Brake/wheels and also a set of JP brake and wheels....

I can honestly said the brake on JP are pretty bad...and cannot be progressive unlike the electron are fully progressive at least the set I was playing with....so changing the controller does improve the JP brake, the core of the problem...it the brake themself.

bodywerks

My Feedback: (4)

Completely agree.