The starter on the old SD1 is on the way out. It sometimes doesn't engage
- pre engage type - and it's not turning the engine as fast as usual. The battery is fine and I've done a volt drop check on both live and ground, which are OK. My DC clamp meter (not the most accurate of devices) says it's taking over 500 amps on a freezing morning.
I can get a high torque type for about twice the cost of a standard one. These are permanent magnet types with reduction gearing which take approx
1/3rd of the current. They are much lighter too.
Any cons - apart from the cost?