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Author Topic: Motor Connectors  (Read 586 times)

Offline Steve H

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Motor Connectors
« on: November 23, 2013, 09:56:05 AM »
Just wondering if anyone has used a JST 3 pin style connector for the motor connections on small 1/2a type electric planes, the same style connector as what the battery uses (2 pin).
Would there be any great loss as compared to the banana style?
What would the current limit be on this type connector?
How long might it last?
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Offline John Hammonds

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Re: Motor Connectors
« Reply #1 on: November 25, 2013, 04:10:43 PM »
Hi Steve,
 While plenty of people have their favourite battery connectors I would think any kind of connector block for a motor would have more disadvantages than advantages. For a start simply reversing any 2 leads will reverse the direction of rotation which is useful if switching between tractor and pusher props (Or even if you just connect it up wrong in the first place). Most ESC's worth their salt do have an option to reverse the rotation but that may prove awkward when you are down the field trying to find your programming card or set up your laptop. My recommendation is to stick with separate bullet connectors (Same Gender on the ESC and the other half on the motor so all leads are interchangable. - I always have male on the motor and female on the ESC).

Possibly someone will come up with a reason why it's a good idea to use a connector block but I personally feel the disadvantages outweigh the advantages.

TTFN
John.
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Offline Steve H

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Re: Motor Connectors
« Reply #2 on: November 25, 2013, 05:04:17 PM »
Thanks John, I can see your reasoning. Part of my problem is that the small bullet connectors I have used are a little flimsy and seem to bend. I like the lightness though. The larger ones, seem to add as much weight after soldering as the tiny motor does to the whole setup. I don't really have any plans to switch the rotation of the motor in this phase of returning to my childhood just slap a few pieces of foam together and have some fun. Maybe learn a little along the way. I guess for the best compromise in neatness, weight savings and getting the motor pushed out to the place the Cox bb would have been would be to solder directly to the speed control, build/fabricate a small light weight standoff and mount the speed controller in the standoff.
When I get the Ringmaster Imperial electrified I will definitely assess the difference between tractor and pusher props.
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