Spec motor running in reverse???

[cooleocool]

Hi,

I have no idea how this happened, but I have a spec motor that is spinning clockwise instead of counterclock wise. A locked 24 degree timed motor. I am applying power correctly (positive and negative). Any ideas... This is really weird... I'm stumped. I just tried an endbell off from a P2k Pro to test it. It still ran in reverse. What in the world is going on??? I'm hooking the positive wire to the "+" and the negative wire to the "-" . That's not it... It's a locked timing motor so the endbell cannot be rotated. I just tried those endbells on a different stock motor hooked up the same way and they worked. Then I tried the spec arm in another can that would work correctly with a stock arm it and it still runs in reverse. It's the arm, but why? I've never heard of this happening before...

Thanks,


-Tom

[cooleocool]

I ended up figuring it out. It was the can. I had my Epic19 arm in a stock can therefore it spun in reverse. Duh lol...

[guver]

would reversing the magnets also do it?

[cooleocool]

Probably... I think that's what's different about spec and stock cans. The magnets are switched. I'll just wire it backwards... It seems to work fine other than the almost zero power in reverse (which I don't remember being that way), but other than that it ran great! It's a spec motor anyway so I probably shouldn't use reverse anyway.

[highroller]

The problem is not the can but the armature, Trinity started selling two versions of 19turn Spec armatures. The only one allowed by most organizations is the one that uses a Mabuchi winding method, the one using a Hemi (or reverse wind) is not legal and causes motors to run in reverse rotation.
This same problem occurred with Trinity mod motors, where it came with a Hemi style armature but that armature was replaced with one from an OEM motor builder that used a standard method for wrapping the wire on armature. Motors ran in reverse direction, even though they were reassembled to original orientation.