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Author Topic: Spade connectors  (Read 4620 times)

sinjon

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Spade connectors
« on: September 04, 2007, 03:28:32 PM »

What am I doing wrong?
I keep leaving the spade connectors attached to the battery terminals.
What is the correct way to attach a spade to a cable - and stay attached.

Colin
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Colin

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Re: Spade connectors
« Reply #1 on: September 04, 2007, 03:33:22 PM »

jon

sounds to me like they are not properly crimped down, thats all it probably is.  use a crimping tool not pliers and you should be ok, if in doubt add a little solder to boot.
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DickyD

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Re: Spade connectors
« Reply #2 on: September 04, 2007, 03:54:27 PM »

Solder the cable in nearest the spade first and when it has cooled down crimp the outer covering furthest from the spade.
Works for me.   O0
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sinjon

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Re: Spade connectors
« Reply #3 on: September 04, 2007, 04:12:47 PM »

Hey - thank you both.
By luck, I was able to add a crimping tool kit to an order that I had placed with Squires an hour and a half earlier.
Such is the advice and the speed of Mayhem members - Invaluable to amateurs.

Colin
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Colin

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Re: Spade connectors
« Reply #4 on: September 04, 2007, 04:15:02 PM »

no problem :) whats the model that they are going in?
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sinjon

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Re: Spade connectors
« Reply #5 on: September 04, 2007, 07:20:34 PM »

The boat is the HMS Bulldog - the Dave Metcalf hull, @ 1:48
I must try to get some piccy's posted, I have had help from all over Mayhem, deck planking to electrics, a very big learning curve, I am really enjoying the build - but that's what its all about I suppose.

Colin
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kiteman1

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Re: Spade connectors
« Reply #6 on: September 04, 2007, 07:56:57 PM »

Don't forget to add a heatsink to the cable above the spade...........avoids meltdown if too much heat is applied.  O0  :angel:
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ukengineman

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Re: Spade connectors
« Reply #7 on: September 06, 2007, 02:31:08 PM »

I don't trust any crimped connection in a marine environmet even if made with the correct tool. I agree with DickyD, solder it near the spade to make the electrical connection and crimp at the end to relieve stress from the joint.

Alan
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R2-D2

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Re: Spade connectors
« Reply #8 on: September 06, 2007, 02:33:58 PM »

Clean and Tin before the wire goes in you need less heat that way  Luke
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Bluebird v2

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Re: Spade connectors
« Reply #9 on: September 06, 2007, 03:40:50 PM »

Hi all,

Ive got to agree 100% with the soldering of the spade connections.  The other thing which I do sometimes is, place a bit heatshrink over the soldered connection on the spade, so it overlaps approximately 3/4 inch onto the insulation of the cable.   This adds that little bit strength to the joint as I have had one or two break at the 'crimped end' of the spade through constant use of pulling the spade off the battery connection.

aye
john e
bluebird   :D
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sinjon

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Re: Spade connectors
« Reply #10 on: September 06, 2007, 05:21:18 PM »

I had my crimping tool ' kit ' delivered from Squires this morning, I am in the process of replacing all the spades - soldering & crimping.
They now seem extremely permanent.
I did feel a bit of a prat asking such a basic question, but its rewarding to know that there is obviously more to it, than just shoving the cable in, and giving it a bit of a squeeze with a pair of pliers.

Why are Squires not in our directory? - enormous catalogue, very helpfull staff, speed of light delivery.

Colin
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boatmadman

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Re: Spade connectors
« Reply #11 on: September 06, 2007, 05:43:43 PM »

whats squires interweb address?

Googling dont seem to get the desired result.

Ian
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dougal99

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Re: Spade connectors
« Reply #12 on: September 06, 2007, 05:50:53 PM »

Not much there

www.squirestools.com

been promising a better site for months. However, there catalogue is enormous and delivery normally the following day.

Cheers

Doug
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Re: Spade connectors
« Reply #13 on: September 06, 2007, 06:07:23 PM »

one idea has sprung to mind, rather than go and have the spades removed everytime you want to charge, adapt the wires with two extra leads coming off the crimped battery leads, forming a Y, with a switch on each the feed to esc and a switch on the charge leads, you could then epoxy the spades off the charge-leads onto a spar, then when you want to charge, throw the switches over on the esc to off, plug the charging leads onto the charge leads, turn on the switch on the charge lead and charge the battery in the boat

that way your connections stay firm and wont fail because you've yanked them out.  I fitted a tamiya plug to my gel cells and a tamiya plug on the charger of my gel cells.  the spades now dont need to be disconnected :)
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tobyker

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Re: Spade connectors
« Reply #14 on: September 06, 2007, 06:54:24 PM »

Presumably if you put diodes in the leads to the ESC you wouldn't need a switch, because the oomph from the charger couldn't go past the diodes to the ESC.
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Re: Spade connectors
« Reply #15 on: September 06, 2007, 06:57:39 PM »

by puttingf a diode in there to stop the flow of power, it by that very action would stop flow of power to the esc from the battery as the leads would be in a Y arrangement, the bottom of the y going to batt, the top of the Y, one half going to esc, the other being the charge leads.

BATT---------
CHARGER-----+-----------ESC
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sinjon

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Re: Spade connectors
« Reply #16 on: September 06, 2007, 07:00:17 PM »

For my little brain, most of that went over my head, could you, or someone put it down as a drg?

Colin
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DickyD

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Re: Spade connectors
« Reply #17 on: September 06, 2007, 07:06:42 PM »

I put a female Tamiya plug on the leads from the terminals and a male Tamiya plug on the charger.
Dont have to remove spade connectors and cant mix up battery terminals. O0
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boatmadman

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Re: Spade connectors
« Reply #18 on: September 06, 2007, 07:37:58 PM »

I put in an on/off/on switch on the positve lead between battery and esc. With switch in one 'on' position, the battery supply goes to the esc, in the other'on' position, the battery charger feeds the battery and the esc is isolated.

Ian
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Bluebird v2

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Re: Spade connectors
« Reply #19 on: September 06, 2007, 08:10:13 PM »

Hi All

This circuit is very similar to what Ian (previous post) has described - the only difference is the switch which is a three way switch in my sketch/scribble.

The centre position is OFF (isolating the battery from the charger - and also from the ESC).

A Word of caution though - sometimes it states on the side of the batteries DO NOT CHARGE IN SEALED CONTAINERS - I shouldnt imagine this would affect us charging gel cells in our models - plenty of air circulation, but, I would caution those who charge Nicads and soforth, as they can get rather warm.

Hope this is of some help.

aye
john e
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boatmadman

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Re: Spade connectors
« Reply #20 on: September 06, 2007, 09:00:35 PM »

You copied my circuit John! Thats esactly how I have mine! O0
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Stavros

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Re: Spade connectors
« Reply #21 on: September 06, 2007, 09:29:03 PM »

Have NEVER had to solder a crimp in my life.If you use a PROPER and I mean a PROPER crimping tool which is readily available through most motor factors,eg Seally tools make a good one,you will have No problems at all.Gentelmen you see the likes of Halfords etc only sell the CHEAP and nasty crimper's you all know hate ones I mean,you've guessed it the ones with the yellow handles,the ones that bend at the drop of a hat,through them away and buy a PROPER crimping tool the RATCHET variety they are preset to crimp at the right torque and the cable WILL NOT pull out of the crimp.Yes I fully agree that the Tam-ya type plugs do need to be soldered but the others no.Oh an the ratchet type crimper's should also be sold at most electrical wholesalers.

Stavros

 
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boatmadman

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Re: Spade connectors
« Reply #22 on: September 06, 2007, 09:31:24 PM »

We use the ratchet type of crimps at work, as Stavvy says, cables NEVER come out. Would be fluffin embarrassing and costly if they did!

Ian
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Stavros

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Re: Spade connectors
« Reply #23 on: September 06, 2007, 09:38:40 PM »

Could not agree more some of my rewiring and total wire up on rally cars are still going strong and still will with no pr-obs at all,those cheap and nasty crimper's should BE BANNED

STAVROS
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sinjon

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Re: Spade connectors
« Reply #24 on: September 07, 2007, 09:39:00 AM »

Nice drg. Now that I can follow.

Thank you John.

Colin
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