Mirek,
I believe that stall current is the load developed when the motor is not
able to rotate - the mechanism is locked up - wipers frozen to the
windshield. I"m an oldish mechanical engineer, not electrical. So
someone else may have a better answer.
Cheers,
Bob Haskell
Austin Healey 3000 BN7/BT7 registrar
On 3/14/21 10:31 AM, m.g.sharp--- via Healeys wrote:
>
> Happy Sunday!, I am making some decisions on bulbs (and the LED
> equivalent) for some Lucas Spot lamps I am fitting to my BT7, and I am
> concerned about the total draw if I have headlamps, spot lamps and
> wipers on. I know it is getting close to the measly 22 amp max output
> of the generator.
>
> The manual has specs for the wiper motor: ?normal running: 2.3 to 3.1
> amps?. Then is gives ?Stall Current? for the motor hot as 8 amps and
> for the cold motor 14 amps. My question is, what is ?Stall Current??
> The draw is huge compared to the normal running draw. Also, by cold
> motor, I assume they mean the wiper motor as I cannot see how the
> engine temp would matter. However, although I get it that electric
> motors generate some heat, I don?t think of them as ?warming up?, or
> running hot or cold, so the huge difference between ?hot motor? and
> ?cold motor? stall current further confuses me.
>
> Any help from the electric whizzes out there would be appreciated.
>
> BTW ? regarding bulbs for the Spots, I like the idea of using LEDs as
> the current draw is so low and the light better, but I find that
> bright piercing light inconsistent with the character of our cars (a
> personal preference) and the price of them is almost 3 times a BPF 48
> W quartz halogen bulb. I also consider that I have been driving my
> BT7 for 46 years without spot lamps and got along OK, so I question
> the need to go to LEDs, other than the advantage of low current draw.
> Any experiences from those of you who have spot lamps with
> conventional bulbs and the older low output generator (i.e. BT/BN7 and
> earlier), would be appreciated.
>
> Cheers, Mirek
>
>
> _______________________________________________
> Support Team.Net http://www.team.net/donate.html
> Suggested annual donation $12.75
>
> Archive: http://www.team.net/pipermail/healeys http://autox.team.net/archive
>
> Healeys@autox.team.net
> http://autox.team.net/mailman/listinfo/healeys
>
> Unsubscribe/Manage:
> http://autox.team.net/mailman/options/healeys/rchaskell@earthlink.net
>
_______________________________________________
Archive: http://www.team.net/pipermail/healeys http://autox.team.net/archive
Healeys@autox.team.net
http://autox.team.net/mailman/listinfo/healeys
ox.team.net
|