The scoop on the Jideco motors...

[Joe Johnson]

I posted this in another place on the forum, but I thought that the info was important enough to make a new thread.


This is what I have learned from Jideco.

The motor was used on a Legacy (Honda? Subaru? I don't know). The motor is out of production now. It should still be available from Service Parts.

It has an internal circuit breaker which will break at 15A in 6-8 seconds.

There are 2 performance data given

At 14.5V:
Free Speed: 91 RPM (min)
Free Current: 3 Amps (max)
Stall Torque: 9.6N-m +1.8N-m / -1.2N-m
Stall Current: 24 Amps (max)

At 13.5V:
Free Speed: 85 RPM (min)
Free Current: 3 Amps (max)
Stall Torque: 8.3N-m +1.5N-m / -1.0N-m
Stall Current: 21 Amps (max)

Joe J.

P.S. Using my handy dandy FIRST Motor Calc spreadsheet, I have quickly calculated that at 12V, the peak power of these motors is just over 14W -- not too high but it could be useful for a lot of slow speed applications (opening doors, locking hooks, etc.).

[joe_balint]

Joe-
I have some old competitive analysis data from when I interned at ITT Automotive (Before it got sold to Valeo) I'll leave out the -30C test data, EMC, audible noise data, etc. and just include the highlights which seem to fall right in line with what you listed above. This is for the Jideco Windowlift motor at room temperature with no wiring harness simulated, measured on the windowlift test dyno at ITT Automotive in the Summer of 1996. The motor was a left hand windowlift motor and was standard on the 1995 Nissan Sentra. Mass = 590 g temperature ~24C.

Voltage Free speed Stall Torque Stall Current
................CW/CCW.....CW/CCW.....CW/CCW
10.5V ...... 64/66 ........ 7.2/6.6 ...... 14.8/14.2
13.0V ...... 83/82 ........ 8.9/8.3 ...... 18.0/16.8
..................RPM................Nm........... .......A

Oh and the motor did pass the 20" water test (~5000 Pa) if anyone really wants to know ;-]

[Raul]

Can someone tell me the specs on the gear on this motor?

Raul

[Joe Johnson]

Jideco would not / could not provide gear data.

By reverse engineering, I have convinced myself that it is a metric module 2.0 gear with a 20 degree pressure angle.

It is enlarged, but how much, I don't know.


I had our shop measure a couple of standard gears mating with the pinion as best as we could measure it without an elaborate set up.

That data is the data that FIRST put on the print they published.

The engineer that is using the motor on our mechanism thinks something is goofy about my data, but is not sure exactly which point he distrusts.

I think that for most applications if you just add about .4mm to the theoretical center distance, things will work out just fine.

Probably more information than you wanted, but there it is just the same.

Joe J.