Alternator wire dilemma

[Ventodue]

Come on now Craig, keep up. Widecase motors are all stamped DM <snip>

. Duh! . Put it down to advancing years, please, Jon ...

What does it say on your Vento?

DM350 74349, of course. (How could it be otherwise? )

It's a bit difficult to make out if Aerojacks motor has a Spanish head from his photo.

Does "8 fins = Bologna, 7 fins = Barcelona" always work, do you know?

[Ventodue]

I found another way to more easily repair a burnt out Motoplat capacitor charging coil.

That IS sweet, Jordan. Excellent bit of re-engineering! Thanks for posting.

Craig

[aerojack7654]

Thanks for all the great info! Im not sure where the motor orginalted, but the PO did enough stuff to it to make most issues moot I suspect. Thanks Jordan for the info, I will definitely be going that route to see how it works w/ my alternator. I've been successfully using a Kohler tractor regulator on my last several 60's and 70's Honda

s-l1600.jpg

s-l1600-2.jpg

Easy install, two yellow alternator wires on the outside and one 12V output in the center. Supposedly good for over 3 amps, I would assume it will handle the 2amp (?) output of the Ducati alternator. Good price too!
http://www.ebay.com/itm/VOLTAGE-REGULAT ... 5841&rt=nc
Oh, yeah, the wheels on the bike are Akront rims with stainless spokes and 100/90-18 Avons

Thanks again for the info!
Jack

[Jordan]

Looks like you have a box that contains a zener diode. Nice and simple, but 3 amps max seems marginal. It could work without a battery, to charge a capacitor "battery eliminator".
The one I pointed to earlier is rated at 14 amps @ 12V nominal - much more breathing space. It has a battery sense wire so needs a battery.
See this other ebay auction for the same unit, with some details of the R-R internals and connections.
Item no. 111941266479

[aerojack7654]

Honestly I don't know the rating for the thing, I got the original lead from a Honda forum where people have been using them on up to cb450s, with charging systems that are rated at over 3 amps. I've got one doing R/R duty one my 65 super hawk now for over 3 years with no problems.

[Jordan]

OK if it works.
What's a CB450 alternator's power output?
I'd like to check it out, as the Lucas ZD715 zener diodes for motorbikes (which I'm fond of) isn't so cheap any more, and hard to get in negative earth.

[aerojack7654]

The max amperage for a cb450 is 4 amps, and after some digging, it appears the the amperage rating for the Kohler R/R is 15 amps. One other point, if not obvious, the unit has to be well grounded during mounting.

Jack

[Jordan]

Thanks Jack.
Yes I figured the Kohler regulator would need to be earthed.
It's nice to have a rectifier in it as well, hopefully full wave bridge (probably).

Great to confirm the higher current rating for it.
BTW, here it says CB450 alternator output is 0.11kW, around 9 amps @ 12V.

Added this link: http://www.i-vol.com/honda_CB-450/