Thanks again guys.
The "Kubota" alternator is a Nippon Denso mfg Part# 100211-1670 and/or 100211-4520. This is a "one-wire" alternator with built-in voltage regulator. The (voltage regulator?) "hump" at the rear of the housing is a problem; the unit may need to be dismantled and if possible...
" ... The brushes in an automotive alternator carry the field current, not the load current.
If you can fit an automotive alternator into the space available that will be the best solution.
Full load current will be limited by the motors ability to reject the heat, whether that current is input...
Further to my above post although I haven't explored it fully, I was thinking of purchasing the high current GM "1-wire" alternator rebuild kits, which sell for perhaps $30 and then incorporating the components for the built-in regulator used on these models and which are always included in the...
Thank you for the excellent reply.
Yes, I am aware that decent charging voltage at 1,000 RPM is unlikely ... even automotive alternators rarely are capable of that, unless perhaps very lightly loaded.
I think it would be sufficient if charging voltage were available at higher RPM ... I believe...
Greetings.
I am exploring the replacement of a DC Generator with an AC Generator (aka "Alternator").
Briefly this is an attempt to modernize a classic automotive electrical system. The 1950's era Generators have a few issues I would like to address. One, reliability ... although they are...
VE1BLL: I haven't rejected the crossed dipole completely. We'll see what the Capacitance Hat experiment reveals. I can build it 1/4 wave (math says 27", which would mean 4 elements at 13.5") and with the Hats, that goes to [some number less than] 10" each. It was a paper on the crossed dipole...
I'm going to build a few examples and see what happens next.
It may be that I'm trying to overthink the problem; i.e. perhaps there are a number of options that all work fine. It's just that I know from experience that antennas matter.
I will build a Moxon type out of copper tubing and try to...
The front "fender" is thermoplastic, the hood is aluminum, other body parts steel except for rear bumper which is also thermoplastic.
If you've ever seen a photo of a miata, basically everything forward of the hood/headlight nacelles is air. The radiator is mounted pretty much between those...
I think perhaps I should clarify where I seem to be leaning, with your help.
Originally I was thinking along the lines of modern cars with multiple FM antennas. Apparently, after some further research, these units are using what is called a Diversity Antenna system, whereby an electronic...
Yes, I understand that stacked arrays are used to increase directionality and, done properly, increase antenna gain, in fringe reception areas.
I also understand that the Winegard is a passive device.
I have no intention of building a co-linear array as it increases, not decreases...
Yes, I'm aware that conventional 1/2 wave verticals are effectively dipoles with the use of a ground plane. Any antenna I build will be tuned to just above the midpoint of the FM band.
When you punch in the values into the math for an FM band antenna you get:
88 Mhz 1/2 wave 63.81 inches; 1/4...
I'll look into the active antenna a bit further. I've tried them in the home (Radio Shack model) and found them to be substandard to a "real" antenna, but perhaps I should look into it further. It definitely is compact.
The combiner I was thinking of using is a Winegard SD-3700 unit designed...
This is probably unrelated to your problem, but I'm going to throw it out there anyway.
According to the description by evelrod, the installed alternator seems to be of the "1-wire" type (with internal regulator). This is the standard style alternator used by GM vehicles for many years.
These...
I am trying to construct an FM antenna for automotive use. I'm trying to eliminate the vertical dipole antenna on the fender of the vehicle; I realize that this is an excellent design for FM, but it is subject to occasional vandalism when parked in the usual public spaces. Put another way, once...
Finite Element Analysis might be available from VisualFEA (Windows, OSX) although the developers seem to be having problems with the Korean-English part of life. Might be a bear getting it to work; I couldn't even find a price (Free? A Million dollars? Who knows?) and the docs seem unfinished...
