Sparx to a Mk III

I just finished mounting a Sparx 3 phase stator to my '75 Mk III, a chore that was far from plug-n-play. Turns out, for me anyway, that the raised platform that lives in the Mk III was a bit too small to accomodate the Sparx stator; the convolutions in the rubberized covering were too small to fit over the stud bosses and the lamanated metal core was too larger to fit onto the radius cut for the OE Lucas part. Dremel to the rescue...

I have read about "interference" with the rotor, hope I don't have that malady...

This is one of the prime reasons I really enjoy working on this machine: everything needs to be fitted. I made a visit to the Smith & Wesson arms factory in Springfield, Massachusetts some years ago, which, ironically enough, was English owned at the time. They had plenty of CNC machine set-ups, but every firearm was individually assembled by a "fitter" who made sure that all parts worked well together.

Any of you experience similar issue when fitting a Sparx to your Mk III?

RS

Mine fit fine but as you said, it's no plug and play adventure.

I got so pissed off that it prompted me to keep going and tear everything apart and do a rebuild.

Sparx know next to nothing about Mechanical Engineering principles. Their comments on "interference fit and belt it on" is stupid and harmful to the product.
A lathe is a neccesary tool when fitting Sparx rotors.

Mick

Coco said:

Mine fit fine but as you said, it's no plug and play adventure.

I got so pissed off that it prompted me to keep going and tear everything apart and do a rebuild.

Click to expand...

You must have had the "Windows" version of the Sparx, mine only prompts me to prepare another martini

RS

I second Coco - I put a Sparx 3-phase alternator kit (includes rotor, stator, and solid state regulator/rectifier) on my Mark 3 last year. Simply bolted right on - no hassles.

And I usually have some kind of curse when it comes to electrics - but this was plug-and-play. No hassle since - it just does its job.

Wonder what's the diff with Roadscholar's experience?

Keith.