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Re: How to remove pinion from 12V CC motor shaft

Posted: Wed Dec 21, 2016 9:50 am
by Lorenzo
Suzsmokeyallan wrote: Perform a test on the motors travel limits to see if the window stops current when its blocking the sensors.
'Bout the collection of electric/electronic devices, that's what I call raking up the market ... :shock:

In view of future possible failures, it's gotta be either your way (stashing-up), or my (stubborn as I am) way, of trying and reverse engineer the little buggers.

All that said, I am not an engineer, but I am stiff-necked, so I am willing to learn, and the reason of this "late" reply is, I am sort of training myself in the field.

Off course, this would look optimistic, without a fascination for electricity/electronics. (yes, I've been doing, in the past Maplin projects, AM-FM radio, led displays that sort of stuff...! :D )

To answer your suggestion, I think the two Hall sensors, failed; if you took a glance of the actuator's innards, you'll have seen that, the latters are placed in a way so that, the second gives the final pulley position, once the motor has rotated a quarter of a round clockways, giving the consent for the motor to spin the opposite way, stopping, once the little mag on the cog, aligns with the first sensors.

The marking on the sensor do not help much, being them more than 35 years old and seemingly discontinued, and on top of it, this marks often do not bear a relation to the actual product line:

Image

this is almost spot on, but this one...

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even though, is marked 177 725z is, in actual fact a Melexis US1881 spec;

I do not wish to delve into the wonders of Hall sensor, least I want to annoy the reader, so I limit myself to the first question that arises: even before tracking the right chap, it should be determined if the control unit, accepts an analogic or digital input, from the sensors, the other values being determinable by deduction (I.E. automotive part so, avg V around 9/12V, max tmp 150 deg. C ) with the other ever important variable, the output in mA, left to be guessed.

Unfortunately, is very difficult for me. at this stage, to give this answers, till I examine better, what is salvaged, from the removal of the matter embedding the inside of the control box.

For now, I seem to have pinned the component to the Panasonic line of products (markings sort of consistent with the mentioned company ones, being it a japanese Co, plus an amount of polite guess...).

Re: How to remove pinion from 12V CC motor shaft

Posted: Tue Apr 11, 2017 6:31 pm
by Lorenzo
Well, at last, I got the actuator working, the way it's supposed to, having replaced the relevant, discrete components :up: :up:

https://youtu.be/czjV1eoHifk" onclick="window.open(this.href);return false;

Re: How to remove pinion from 12V CC motor shaft

Posted: Tue Apr 11, 2017 6:56 pm
by Jimroid
Victory, nice work!

Re: How to remove pinion from 12V CC motor shaft

Posted: Wed Apr 19, 2017 7:36 am
by Suzsmokeyallan
So what was wrong with the original armature, did it have an open circuit on one of the coils?

Re: How to remove pinion from 12V CC motor shaft

Posted: Sun May 07, 2017 9:42 am
by Lorenzo
The original motor suffered from the excessive prolonged thermal stress, the control circuitry was subjected to.
You will find this to happen, when you take practice laps; brake rotors/calipers and tires, seemed to suffer too.
Will you excuse the late reply?!

Re: How to remove pinion from 12V CC motor shaft

Posted: Wed May 10, 2017 6:30 pm
by Suzsmokeyallan
To add to this, I remade the cables for the power valve spools to the motor, Now each one is a custom length with stainless halfnuts and rubber boots to cover the brass adjusters. I also shortened the freeplay distance so the adjusters are not screwed out as much as the stock ones for a better finish.
Now they look way better when mounted than the stock affair the factory conjured up.


Image
Three sets of the shorter cables completed, one set with the boots on.

Re: How to remove pinion from 12V CC motor shaft

Posted: Thu May 11, 2017 2:45 pm
by Lorenzo
Very clever.
Boots from...?

Re: How to remove pinion from 12V CC motor shaft

Posted: Fri Jun 02, 2017 5:22 am
by Suzsmokeyallan
Suzuki boots used on the carb throttle cables.