connectors, why so many different connectors!

General Discussion about electric vehicles.
Post Reply
Telemachus   10 W

10 W
Posts: 91
Joined: Jul 15 2013 3:57pm
Location: Riverside, CA

connectors, why so many different connectors!

Post by Telemachus » Oct 13 2017 3:12pm

I finally assembled all the parts for my newest e-bike/scooter.

Speed controller, motor, throttle, break, battery. All check.

And not a single thing will plug into the other!

Battery has XT60. Speed controller doesn't, ok easy fix.

Throttle has a tiny little 3 wire connector. Speed controller has a big one. I'm in a rush so going to use soldered on bullet connectors.

Motor wires fit (yeah!) but the hall sensor wires are both female! Ok, again, going to cut them and just use soldered on bullet connectors.

Brake... umm, ok i'll cut and solder bullet connectors.

But not I am up to like 20 bullet connectors on this thing? Can't the chinese just standardize these connections for crying out loud?

:roll:

User avatar
spinningmagnets   100 GW

100 GW
Posts: 10647
Joined: Dec 21 2007 10:27pm
Location: Ft Riley, NE Kansas

Re: connectors, why so many different connectors!

Post by spinningmagnets » Oct 13 2017 5:34pm

Once you buy a kit from a certain vendor, they really don't want you buying a different motor, controller, or throttle from anyone else. If a part is damaged in some way, they want you to come back to them to get the single part that isn't working. Wire colors and odd connectors are one of the ways they encourage you to do this.

User avatar
jonescg   1 GW

1 GW
Posts: 3302
Joined: Aug 07 2009 9:22pm
Location: Perth, Western Australia

Re: connectors, why so many different connectors!

Post by jonescg » Oct 13 2017 10:41pm

Connectors are the biggest headache ever. So many different types, and many of them are bulky and look terrible.

Battery contacts - hard to go past the XT series.

For motor phase wires on e-bikes, the MT60 is pretty nice:
Image

And the Hall sensors can be done with a variety of circular connectors from Amphenol, but I still find them rather bulky.

billvon   1 MW

1 MW
Posts: 1749
Joined: Sep 16 2007 9:53pm
Location: san diego

Re: connectors, why so many different connectors!

Post by billvon » Oct 13 2017 11:33pm

Telemachus wrote: Can't the chinese just standardize these connections for crying out loud? :roll:
Then someone wouldn't like them because they are too expensive and thus impede EV sales. Or they are too cheap and unreliable. Or they are too cheap and don't carry enough current - so you still need a different connector for even a medium power ebike. Or they're not waterproof. Or they are too big to fit cleanly in the frame.

The perfect connector is like the perfect ebike - different for everyone.
--bill von

Telemachus   10 W

10 W
Posts: 91
Joined: Jul 15 2013 3:57pm
Location: Riverside, CA

Re: connectors, why so many different connectors!

Post by Telemachus » Oct 16 2017 9:08pm

I like the three prong XT60. Please share other ideas of what you use.

I ended up going with RC servo connectors for the hall sensors.

User avatar
amberwolf   100 GW

100 GW
Posts: 25097
Joined: Aug 17 2009 6:43am
Location: Phoenix, AZ, USA, Earth, Sol, Local Bubble, Orion Arm, Milky Way, Local Group
Contact:

Re: connectors, why so many different connectors!

Post by amberwolf » Oct 16 2017 10:58pm

some other threads about this (not all are relevant)
https://endless-sphere.com/forums/searc ... mit=Search

more listed, but less may be relevant
https://endless-sphere.com/forums/searc ... mit=Search

Cephalotus   1 kW

1 kW
Posts: 470
Joined: Jun 18 2012 12:27pm

Re: connectors, why so many different connectors!

Post by Cephalotus » Oct 26 2017 12:31pm

I like the HiRose HR30 connectors that BionX uses for data communication.

6 pins are good for ground (1) +5V (1) + hall sensors (3) + a temperature sensor (1).

Those are small, IP67 protected and they lock...

I never had any problems with them.

Image

Image

Image

User avatar
minde28383   1 kW

1 kW
Posts: 381
Joined: Apr 02 2010 7:11am

Re: connectors, why so many different connectors!

Post by minde28383 » Nov 07 2017 6:36pm

So different connectors because there a lot different application where one connector might be better than another. If you need water prove connector than there are not so many of them to choose from. Or they go up in price compared with regular ones or are too big for your preference.
There are RC world and there people might count every single gram.
Also there are places where sparks are an issue, therefore, golden connectors or connectors with resistors.
On the other hand, there are places where connectors have to be bulky.
I too have headache when I have to choose one connector over another, but sometimes I just use whatever I have from RC stuff. And I have too many... No matter what connector I install I feel than there is one better to be found. I tolerate banana golden plated connectors but the ones with male/female and with insulation for polarity.
Also I've difficulty when I need to choose a wire but that's a whole other topic.

markz   100 GW

100 GW
Posts: 6130
Joined: Jan 09 2014 11:38pm
Location: Alberta Canada

Re: connectors, why so many different connectors!

Post by markz » Nov 12 2017 4:37am

Buy what is local, so you are not stuck with interweb waiting shipping chinese holidays customs door knocks
I am liking the 0.093 Molex as they are large enough and local and decent price.
I bought some XT90s from Hobbyking, Grin Tech sells ASXT90 "Antispark"
I need something big enough for my fat fingers and bad eyes. XT90's have very large gold cups to heat up and fill with solder. Though my 60W iron messed up a couple from the heat. They are very tight fiting.

:lol: China and standards :lol: The basement and back alley sellers in China are laughing at you.

Just snip the old ones off and install anything you like.

Post Reply