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#Post#: 2101--------------------------------------------------
Single wire alternator conversion?
By: patentgeek Date: August 4, 2017, 4:03 pm
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Has anyone converted their Nuovo Falcone to a single wire
alternator? For example, the single wire Bosch 700 watt / 50
amp alternator used on BMW oilheads and K-bikes. The stock
setup seems to have a good reputation for reliability, but a
modern, single wire setup would simplify wiring and provide
greater output.
#Post#: 2116--------------------------------------------------
Re: Single wire alternator conversion?
By: banquo Date: August 6, 2017, 5:02 pm
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Haven't heard of one pg; one of our local owners is looking at
fitting a mini-dynamo, having converted to a total loss system
with a Li-ion battery, and missing the benefits of lighting. As
you say, the stock system works, delivers sufficient power and
is generally reliable. If my dynamo died, I'd probably replace
it with another one, for simplicity
#Post#: 2285--------------------------------------------------
Re: Single wire alternator conversion?
By: tonya Date: February 18, 2018, 2:46 pm
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In reply to Patentgeek’s post about single wire alternators,
here are details of something similar that I have fitted to my
NF custom build.
Having said that, I do not encourage non original modifications
to machines which are otherwise standard and perfectly capable
of working efficiently with the standard equipment.
However my requirement was to replace my ‘dead loss’ battery
system with something small and neat which would allow me to use
my headlamp during both daytime and night time riding.
I came across (or should I say Banquo came across) a Kubota 12
amp permanent magnet alternator, as fitted to lawn tractors,
etc.
It is very small and neat and driven via a standard Z 21.5” vee
belt.
HTML https://farm5.staticflickr.com/4625/40300649982_77b087cda8_z.jpg
HTML https://flic.kr/p/24penbNIMG_4190
HTML https://flic.kr/p/24penbN
by bancquo
HTML https://www.flickr.com/photos/17279292@N03/
As can be seen in the photograph it mounts on the standard
dynamo mounting lug and just needs the addition of a small
tensioning bracket at the front.
However it is not a single wire system. In fact it is a six wire
system but it is all very simple to wire in place.
Because it is a permanent magnet device there is no control of
output and so the spare energy has to be dumped through the
separate voltage regulator, though heat loss.
HTML https://farm5.staticflickr.com/4720/39634611514_d6bd7d9ee6_z.jpg
HTML https://flic.kr/p/23onK9WIMG_4239
HTML https://flic.kr/p/23onK9W
by bancquo
HTML https://www.flickr.com/photos/17279292@N03/
My voltage regulator is mounted under the saddle, on a heat sink
(bit of sheet steel) in an area where there is some air
movement.
Due to the small size of the alternator pulley the rotational
speed is about 2 x engine speed. However on my bike, which is
fitted with a smaller than standard rear sprocket 50 mph is
equivalent to 2500 rpm. This means that the alternator will be
doing 5000 rpm at normal cruising speed.
It remains to be seen if that will be too fast both in terms of
bearing wear and heat dissipation through the regulator.
Time will tell !
Something that was really strange was that the purchase price
from an Australian supplier was nearly £100 less than a UK
supplier. But then I had to pay custom charges which did reduce
the saving a bit.
Weird though !!!
So, to summarise, it fits very easily on the original dynamo
mounting lug, and maintains the minimal look of the bike.
It's not road tested yet but everything is looking good at the
moment.
#Post#: 2294--------------------------------------------------
Re: Single wire alternator conversion?
By: JamesNFalconaut Date: February 22, 2018, 9:56 pm
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"It's not road tested yet but everything is looking good at the
moment."
Sure does look good Tony. Very neat job.
Does it take much to convert the NF from dynamo power to
alternator?
James
#Post#: 2295--------------------------------------------------
Re: Single wire alternator conversion?
By: tonya Date: March 4, 2018, 10:57 am
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Well James, it's easy to install mechanically but :-
electrically it means getting into the wiring harness, removing
the dynamo wires and kind of starting again.
Not that it's complicated but a little wiring knowledge and some
crimp terminals helps a lot.
#Post#: 2296--------------------------------------------------
Re: Single wire alternator conversion?
By: JamesNFalconaut Date: March 5, 2018, 11:50 pm
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Cheers Tony
#Post#: 2525--------------------------------------------------
Re: Single wire alternator conversion?
By: olebmw Date: December 27, 2018, 12:38 pm
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Tonya, Do you have any road test information to report on the
Kubota alternator installation?
#Post#: 2526--------------------------------------------------
Re: Single wire alternator conversion?
By: tonya Date: December 28, 2018, 5:30 am
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Hello Olebmw,
Well I've done quite a few hundred miles with my Kubota
alternator set up and so far it's 100% successful.
It's such a sturdy piece of equipment I think that it will go on
for ever.
So yes ! I can fully recommend it.
#Post#: 2527--------------------------------------------------
Re: Single wire alternator conversion?
By: olebmw Date: December 28, 2018, 1:01 pm
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Hi Tonya,
Thanks for the quick reply. Good to hear it's a success.
I've delayed ordering one because I couldn't decide if the
higher
RPM's would cause a problem.
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