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jon
12-30-2004, 09:50 PM
What are you fellow builders using for over voltage protection?
I was told that the crowbar method with a relay will do.
Jon

irishfield
12-30-2004, 10:25 PM
If you're doing a homebuilt...I like to use a Honda Civic regulator. A bit more complicated to wire than the simple chrysler style's one in one out but well worth it. Ive been running the same GILL-25 battery since 1995 and it still has full voltage and still cranks my 0-320 over like a charm. When running it gives about 14.2v. Has an overvoltage circuit as well as an idot light circuit for failure. Note that I've only topped this battery once in almost 10 years as well..so runs a perfect charging current/voltage.

Cheers,
Wayne

pzinck
12-31-2004, 12:17 PM
Stochiometric

Wingie
12-31-2004, 12:38 PM
Stochiometric. Actually spelled stoichiometric, but becoming "proper" a little at at time through "common [mis]usage"." 1) the determimation of the atomic weights of elements, the proportions in which they combine,and the weight relations in any chemical reaction. 2)the branch of chemistry dealing with the relationships of elements in combination, esp. with quantitative relationships. "

So, how are you meaning this, Phil? Are you complimenting Irishfield for the perfect chemical prosesses he is maimtaining in his dynamo? :angel: :drinking:

pzinck
12-31-2004, 05:50 PM
Exactly,sounds like he got his stuff together.Some of you guys be smart fellas.

paibre
12-31-2004, 07:07 PM
I paid for a college education to get that through thick skin!

Thanks

Al King
01-10-2005, 08:03 PM
I went to a local auto wrecker and bought an almost new alternator from a Susuki Sidekick. It's small light, produces 55 amps. It's got an internal regulator and it's easy to wire. It also can be wired to illuminate an idiot light when it's not charging. Total cost $75 CDN. It sure looks an awfull lot like the light weight units being sold as "aircraft" alternators.
As far as voltage regulation goes you guys spend far too much time and money weighing down your planes and making them too complicated.
The voltage regulation in modern alternators is superb, lets face it there are millions of cars running around without electrical problems.
Most of the overvoltage problems encountered in the past where to do with older alternators with external regulators which did fail. That stuff was built 40 years ago and things have changed.
Another thing is that most radios etc. today have internal regulation of their own and are unaffected by voltage, spikes or even polarity in some cases. It's because the manufacturer's have to protect themselves from people abusing their stuff.
It's very easy to make a mount to stick one of these alternators on a Lycosaurus .