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Motor clip hack


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#1 Mark Wampler

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Posted 21 February 2018 - 04:07 PM

Who out there doesn't like motor clips on your FK motors?  I for one until I had a dream, haha

Got some old  PS motors... you're in luck.  Take the screws from off the brush hoods and they tap right into those tiny holes on the FK terminals.   You need to drill a hole in your clip to run the screw, easy easy.

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#2 Bill from NH

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Posted 21 February 2018 - 06:14 PM

Aren't some or those screws torx heads or are they all?


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#3 Mark Wampler

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Posted 21 February 2018 - 06:24 PM

Aren't some or those screws torx heads or are they all?

 

 

Very tiny Philips head !  I don't know about other brush hood screws.  These off the Speed FX work perf.


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#4 Pappy

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Posted 21 February 2018 - 08:27 PM

That's thinking out of the box, Mark. I like it.  :good:


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#5 Mark Wampler

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Posted 21 February 2018 - 09:20 PM

This of course can be expanded to use a standard screw and nut.  The self tap screw from the PS motor doesn't fit especially tight, so you may want to put a tiny amount of loctite under the screw head before running it down. 


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#6 Mark Wampler

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Posted 21 February 2018 - 11:28 PM

Nothing for sale here, just a hack.  The screws  from a PS motor  are lightweight, fit existing holes in the terminals with no extra drilling to fit    If you can get pre-drilled clips, cheap, that would be the way to go.


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#7 Mark Wampler

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Posted 22 February 2018 - 12:30 AM

Oops, got locked out.  Okay, here's my response:

 

1st of all the holes drilled in the clip should be on the tight side.  You will pre-run the screws in the clip to cut their own threads before you mount on the terminal.  Check for any burrs afterward. The hole in the terminal is just right as is.  Not to tight, not too loose.  When you cinch down the screws, they Will be secure.  So let racer decide as I'm sure they're looking on.  Free advice here, free screws from your old motors, but I think if Mike can provide pre-drilled clips that will allow the tap screw to pre-cut threads, that's where he can make a couple bucks.

 

If the self tap screws don't stand up, then standard thread screws and nuts will do the job.

 

A wire inserted sure may be easier and work okay, but again, it won't assure that the clip will not move around, vibrate  on the terminal.  Might be just fine for most applications.  I'm  sure going to be experimenting and welcome to see other racers results.


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#8 Samiam

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Posted 22 February 2018 - 03:50 AM

Just mount a 2nd lead wire holder near the front of the motor. This prevents the wires from moving around and falling off. 


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#9 Mark Wampler

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Posted 22 February 2018 - 09:30 AM

Its only 6:30 am. I'm waiting for Ace Hardware to open so I can get a drill bit.  I'm going to try a slightly oversize bit to drill the clips, If I have any here at all.  With the way these screws tap into the terminal, they're not too tight and not too loose.  I'm going to bet there's enough grip to hold clips secure without any movement.  That would be super easy. 


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#10 Mark Wampler

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Posted 24 February 2018 - 03:30 PM

This morning I took a small strip of  .032 brass and came up with this to make a pair  You will need to slightly enlarge the terminal holes so the screw will slip in and out easy.  Use a strong magnet tip screw driver.  The most tedious part is running the screw several times through the connector (clip) so when you mount it, there isn’t stress placed on the terminal.  While I'm drilling  the 1.02 mm hole in the connector, I twist it around to enlarge the hole to make threading the screw easier. I would take a few old motors and practice mounting and dismounting the connectors until you get a system.   The connectors mount under the terminal.  The hardware store may also have 1mm self tap screws.

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#11 swodem

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Posted 09 February 2019 - 01:50 PM

Why not just solder your wires?


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#12 Rotorranch

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Posted 09 February 2019 - 07:10 PM

Why not just solder your wires?


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I was wondering the exact same thing.  :unknw:

 

Rotor


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#13 Bill from NH

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Posted 09 February 2019 - 08:00 PM

Soldering works, some people like to keep as much external heat away from sealed motors as they possibly can. Some will even glue on pinions, rather than soldering them for the same reason. I solder on both.


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#14 MSwiss

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Posted 09 February 2019 - 08:29 PM

Some people think heat affects the tension on those little leaf springs.

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#15 Ramcatlarry

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Posted 09 February 2019 - 08:42 PM

I still like Mikes' push on terminals for the brush hardware to keep the soldering heat on the springs down.


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#16 Rotorranch

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Posted 09 February 2019 - 09:20 PM

Crimp connector = current/ voltage loss.  Screw terminal = more current/voltage loss.

 

Why???  Makes no sense to me.

 

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#17 MSwiss

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Posted 09 February 2019 - 09:53 PM

If you choose to race with this type of motor, you are free to connect the lead wires as you wish.
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Mike Swiss
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Two-time G7 World Champion (1988, 1990), eight G7 main appearances
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#18 Mark Wampler

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Posted 10 February 2019 - 02:59 AM

One reason I like Thomas Edison.  He kept messing around  and messing around  and then the light went on. 


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