<VV> I'm thinking maybe the starter motor...

[Joel McGregor]

Jim is correct.  Worn bushings will really make a starter weak.  I've never seen any worn enough to make the armature drag though.
I have had bad batteries do what you describe also.
I've found Battery Minders work a lot better than the Tenders because of their desulphation circuit.
It could also be a failing winding as Jim mentioned.
Bushings are cheap and would be my #1 guess.  Try that first.
Joel McGregor


-----Original Message-----
From: VirtualVairs On Behalf Of Jim Becker via VirtualVairs
Sent: Thursday, August 06, 2020 9:00 AM
To: virtualvairs at corvair.org
Subject: Re: <VV> I'm thinking maybe the starter motor...

I'm pretty sure it is the coriolis effect because they didn't put a left hand spiral on the Bendix.

Seriously, when you take the starter apart, the reason us usually obvious. 
The armature has been dragging on the pole shoes.  New bushings will usually fix it.  If this isn't it, the problem could be a winding that fails when it is hot.

Jim Becker