Alright, I have a challenge for you all! I need to find a source for a 12 volt reversible blower motor. What I mean by this is that it has 4 wires coming out of the case and that it can be reversed at the switch. I have one, but cannot seem to find anyone who sells them. The numbers on the bottom of the case are 12v 508 586 0FT M-846. Any help locating will be much appreciated.

 

why reversible?

 

Howdy,


Drop on over to your favorite auto parts store and tell them you would like to buy a 12v blower motor for your heater

If you ask to see their Siemens Automotive Catalog and you should be able to find one that suits your needs. The catalog has pictures in it for comparison. I think I paid about $30-40 for mine.


I don't think you'll find a reversible motor though. I am not sure why you'd want to reverse a squirrel-cage fan anyway.... (but since it's a DC motor just swapping the +/- leads will reverse it.....)........Well, evidently not. I went out and tried it on my old motor................turned the same way regardless of how it was hooked up!!




Along those same lines.....If you want to be able to control the speed, you can use a PWM type motor speed control like the one below...
http://www.electronickits.com/kit/co...or/CKMX033.htm

Cheers,


Rick

 

the 41-48 ford car heaters had reversible motors, they would spin forward to push air out of the core, and spin backwards to pull hot air up to the defrosters. I have one, but it is rusted so bad i cannot use it.

 

That would require a blade type fan on the motor. Doesn't your heater use a "squirrel-cage"?

 

Sure does, and it has a fan blade on it also, here is a link to a heater that I restored, it is kind of hard to see the squirrel cage because its in the housing 1942 1946 1947 1948 ford car convertible truck heater - eBay (item 280592925199 end time Nov-28-10 13:58:29 PST)

 

I'd love to find the same thing for my 50. I bought some defrost hose the other day and realized that it was mute point unless I have a reversible blower motor.

 

Exactly! That heater has the same motor as the car motors. Are you still 6 volt? or did you convert to 12?

 

My 50 is a 12 volt. I was gonna mess around and find a switch that can hopefully reverse polarity. My heater is very simple. Has a blower motor mounted above a flat core (no squirrel cage). All the heat blows out the bottom after its pushed through the core by the fan. To be honest, I haven't looked that hard for what I need just yet. But its gettin cold around here. I need to get on the stick.

 

Will you send me a picture of your heater? I might be able to help. My email is fifty-two_f1@ndwave.com

 

Will do. I will get some pics tomorrow in the daylight. Its a little black heater that has 3 horizontal doors near the top. On on front and 2 on each side. Thanks.
Shane

 

You don't need 4 wires to get reversible, you just need to make sure the motor isn't grounded to the case (one wire). All the Siemens motors have two wires. Some are listed as "non-reversible", I don't know if that's really true, but a lot of them are listed as reversible.

Here are some promising possibilities I saved from a previous thread:

'49 Ford -- NAPA. PN 455-1020, $23.55 + tax
'50 Merc -- NAPA # 655-1020
'46 Ford car with 3 doors: Balkamp replacement-BK6551022

 

The stock motors had 4 wires, one for each brush and one for each field coil. I have taken a standard single speed motor and made it reversible, but my problem has been finding the correct size case and shaft diameter that is reasonably priced.

 

So after the last post, the truth of the matter is again revealed......are we again launched into the age old discussion........Finding the corret size.....would that be on a "Magic Aire" heater?

How about posting the type of heater and vehicle you are looking for with this motor and why it needs to reverse???????

 

We both posted above why we wanted them to reverse. And like I said above, mine is a 50 F1. And I have no idea what brand the heater is. Not a single mark on either of mine. But I can tell you neither of mine are magic aire.