Slash 2

[danedg]

I'll happily acknowledge my meager knowledge of auto electrics, but I'm stumped as to how you've got an alternator supplying juice where necessary without having a battery inline...

[Goomicoo]

Originally Posted by datchew

It's a /2. It doesn't require any at all! But it has a 12V anyway.
Batteries Plus, Xtreme, AGM Permaseal, XTAX7L-BS

I think he saying that a slash 2 doesn't need it in normal circumstances. I imagine he knows that an alternator does need a battery as the field is not self exciting! I'll give him the benefit of doubt on that one.

[datchew]

Originally Posted by Goomicoo

I think he saying that a slash 2 doesn't need it in normal circumstances. I imagine he knows that an alternator does need a battery as the field is not self exciting! I'll give him the benefit of doubt on that one.

While I appreciate the benefit of the doubt, it's misplaced.
My electrical prowess is quite anemic, however... I do know that even if I cut all the wires to my charging system, the bike will still continue to run. And this is what I meant about not requiring a battery.

That being said... this also speaks to my lack of reading comprehension as it's obvious to me now that this is not what Dan was asking.
He's probably used to me being a little off the mark by now.

[danedg]

It's a /2. It doesn't require any at all!
I do know that even if I cut all the wires to my charging system, the bike will still continue to run.




You've got a unique, well engineered system there.

[Goomicoo]

I think we're all on the same page here. Different paragraphs though!

[danedg]

That coil looks familiar. And new.
Emerald?


Is it 12V? Does it matter?
Most importantly, does the bike run better with 800W of raw power?

It must light up those 6V bulbs!

[Goomicoo]

Originally Posted by danedg

That coil looks familiar. And new.
Emerald?


Is it 12V? Does it matter?
Most importantly, does the bike run better with 800W of raw power?

It must light up those 6V bulbs!

That's a lot of stuff to pack under the cover!

[wirewrkr]

this was also a factory option in the last few years of the /2 bikes.
I ran this same set up on my brothers 64 R60 until it was transformed into an R90/2

[danedg]

A 12V alternator?

[Carl]

The factory /2 Twins alternator system is/was 180W and uses the identical charging circuitry as the /5 and up airheads.

Dat's system is a custom that uses a mod'd (both mechanical and electrical) 280W post '74 airhead stator and rotor, along w/ DR Delcotron charging components.

The two charging systems have similarities, but are not the same.

It is a rare jewel to find a '68 or earlier airhead twin w/ a factory alternator system, The 4-brush generator 100W system were sometimes used on authorities fleet machines and tend to be more common

Carl

Dat's charging system circuitry


NOS 12V 180W alternator harness. Note the earthed brush lead:

[danedg]

Thanx for sharing!


By the way, what became of your old 6V system?

[danedg]

Sam's '68 R69S has a 12V generator setup on it. It's been reliable.

[Carl]

Originally Posted by danedg

Sam's '68 R69S has that 12V generator setup on it. It's been reliable.

Are you sure it's the Bosch/DR Delcotron design and not the Bosch/Voltpak type?

Carl

[danedg]

Couldn't tell you.
The bike has the 12V "Police" generator package
OEM I believe.

I didn't know they had an alternator rig available before the /5.
Looks very stout!

[Bill Harris]

Originally Posted by Datchew

Inmate Carl helped me out and most of this (except the points plate) is his design.

That 12v alternator set up is sharp, real sharp. The Delco rectifier bridge is indeed the heart of the Emerald Isle/Omega BMW diode board. On a Delco alternator, it normally resides inside of the alternator housing, along with the voltage regulator.