[Healeys] Dynalite or which alternator to C42 Generator

[Oudesluys]

It may be better in this case to fit an Ammeter instead of a Voltmeter. 
The current is the decisive factor for heat build up and thus failure. 
Normally one would fit a Voltmeter with an alternator, but then the 
usual alternators do not show these alarming signs of heat build up of 
these generator look-a-like alternators.
Kees Oudesluijs


Op 1-5-2017 om 21:54 schreef Steve B. Gerow:
> Healey folks,
>
> I have in my posession a brand-new AccuSpark Stealth Dynamator which failed after about 20 minutes of driving on the freeway. According to the auto electric guy, the internal regulator “crib-deathed”, allowing continuous full charging, which in turn fried the stator windings.
>
> He also said the design is a copy of the original late-'60s VW & Porsche Bosch first-generation alternators which looked the same as the previous generators.
>
> Dynamator sent my friend a new one with no hassles and no retun of the old one, which I now have.
>
> Physically, the product appears to be well-built.
>
> I have three southern-Calif friends who've mounted Dynamators within the last 6 months. They've been doing short drives – no big road trips yet.
>
> IMO we'll have to wait for the results of this summer's hot weather and long drives to see how they work out.
>
> In the meantime, one should approach the Dynamator as a “science project”:
>
> Before use, have an auto-electric shop test it to make sure the regulator is good
>
> Fully charge your battery before use.
>
> Dynamator suggests you use your original fan and pulley – IMO it's better to replace the pulley with a smaller alternator-sized pulley to get higher speed.
>
> Add a voltmeter so you can observe the performance.
>
> Do short drives with an eye on the voltmeter.
>
> Don't trust it for a long drive until you've done some day trips in hot weather.
>
>
> At some point, I'll probably get mine re-wound, which is economically feasable due to the “free” cost.
>
> FWIW - I'm currently running a Denso “Mini-Chevy” alternator, which I would keep in the boot as a spare when using the Dynamator.
>