Shovelhead A place to talk about Shovelheads.

70 Shovelhead nose cone alternator motor, battery eliminator

Thread Tools
 
Search this Thread
 
Old Apr 11, 2020 | 07:12 PM
  #1  
Sunny L's Avatar
Sunny L
Thread Starter
|
6th Gear
Joined: Apr 2020
Posts: 14
Likes: 1
From: NYC
Lightbulb 70 Shovelhead nose cone alternator motor, battery eliminator

I recently undertook the task of knocking the cob webs off my fathers old shovel, it is a kickstart only with a Lucas capacitor (battery eliminator). got the the beast to start and run perfectly fine only on 12V charge or hill bump starting (DC current and High RPM), would not kick start(Low RPM/AC current). So after trial, error and money down the drain we determined that the voltage regulator is fried, so now I am asking which regulator is the correct one for this specific bike based upon the stator size which I have no idea it is (any help on that would be much appreciated) and also how to determine which voltage regulator is a "shunt" regulator as I am told that is very important for the shunt action allows the low rpm (kick starting) to drop charge through the system causing spark.


P.S. Batteries are for the weak.
 
Reply
Old Apr 11, 2020 | 08:03 PM
  #2  
Racepres's Avatar
Racepres
Seasoned HDF Member
Community Builder
Loved
Community Favorite
Top Answer: 1
Joined: Jul 2014
Posts: 8,517
Likes: 3,278
From: Cental, MI
Default

Batteries are for the weak... count me in... I'll be riding away while you are Dinking with yer "eliminator"...
I have Never had one work with a Harley... one Ironhead would sort of work... but I gave up on that also!!!
Good Luck...
 
Reply
Old Apr 11, 2020 | 08:19 PM
  #3  
TwiZted Biker's Avatar
TwiZted Biker
Club Member
15 Year Member
Loved
Community Favorite
Top Answer: 10
Joined: Mar 2009
Posts: 66,058
Likes: 51,253
From: Niles Canyon Ca.
Default

I'm just going to watch this one...... where did I set my coffee?
 
Reply
Old Apr 11, 2020 | 08:26 PM
  #4  
Sunny L's Avatar
Sunny L
Thread Starter
|
6th Gear
Joined: Apr 2020
Posts: 14
Likes: 1
From: NYC
Default

youll be giving up your whole life, next.
 
Reply
Old Apr 11, 2020 | 08:50 PM
  #5  
TwiZted Biker's Avatar
TwiZted Biker
Club Member
15 Year Member
Loved
Community Favorite
Top Answer: 10
Joined: Mar 2009
Posts: 66,058
Likes: 51,253
From: Niles Canyon Ca.
Default

Not really, been there did that long ago, rode brits for a decade, built more rusted bucket broke *** basket case harleys than I care to remember and never saw one of those eliminator gizmos work worth a fuq without a small battery in the system somewhere.

Talk **** to somebody who don't know no better son...
 
Reply
Old Apr 11, 2020 | 09:27 PM
  #6  
johnjzjz's Avatar
johnjzjz
Seasoned HDF Member
15 Year Member
Top Answer: 3
Joined: Nov 2006
Posts: 12,878
Likes: 5,446
From: la la land jerzey
Default

I was cleaning up today in the shop an area I almost never get to straighten up - will I found one of those - its like a shotgun shell with 3 wires - think a blue - red and black

I had it on an iron sporty to help excite the generator that had a mag - but I never bought into a shove alt would get me home in the middle of the night with that sort of gizmo
 
Reply
Old Apr 12, 2020 | 08:20 AM
  #7  
Architect's Avatar
Architect
Seasoned HDF Member
15 Year Member
Joined: Apr 2010
Posts: 9,404
Likes: 7,624
From: Long Island, New York
Default

Lithium batteries are much smaller then anything available back when your old man setup that bike. I would suggest looking into a spot to hide a mini lithium and solve multiple problems at the same time. DK Customs a sponsor of this site and an all around good guy sells them and probably could talk you through what you need for your application. Good luck.
 
Reply
Old Apr 12, 2020 | 09:17 AM
  #8  
Racepres's Avatar
Racepres
Seasoned HDF Member
Community Builder
Loved
Community Favorite
Top Answer: 1
Joined: Jul 2014
Posts: 8,517
Likes: 3,278
From: Cental, MI
Default

BTW if one of Y'all has one of them Mighty Max Boxes... give me a shout, They will work like a damn on a Brit!!!!BTDT
 
Reply
Old Apr 12, 2020 | 11:28 AM
  #9  
TwiZted Biker's Avatar
TwiZted Biker
Club Member
15 Year Member
Loved
Community Favorite
Top Answer: 10
Joined: Mar 2009
Posts: 66,058
Likes: 51,253
From: Niles Canyon Ca.
Default

Everybody I knew that had one ran a magneto on a genny lower and even then most at some point ended putting a little dirt bike battery in there somewhere. Never did see an alternator shovel work with one without a battery in it.
 
Reply
Old Apr 12, 2020 | 05:23 PM
  #10  
t150vej's Avatar
t150vej
HDF Community Team
20 Year Member
Community Favorite
Joined: Dec 2005
Posts: 5,351
Likes: 2,525
From: NC USA
Community Team
Default

Originally Posted by Sunny L
...........it is a kickstart only with a Lucas capacitor (battery eliminator). got the the beast to start and run perfectly fine only on 12V charge or hill bump starting (DC current and High RPM), would not kick start(Low RPM/AC current). ...........the correct one for this specific bike based upon the stator size which I have no idea it is (any help on that would be much appreciated) and also how to determine which voltage regulator is a "shunt" regulator as I am told that is very important for the shunt action allows the low rpm (kick starting) ...........

P.S. Batteries are for the weak.
If it's the 4 wire stator (2 phase) that one is 15 amp. The 2 wire stator (single phase) would be 22 amps.

There is a shunt circuit in the standard regulator, but it's a transistor and a thermistor - part of the electronics - has nothing to do with the actual alternator output. But therein lies a problem with a "no battery" setup. The electronic regulators can't hold up for long without having the constant load of a battery, till they burn out. If it's a 4 wire stator, you'll need to change it to a 2 wire and order a Cycle Electric part# CE-204NB regulator that's designed for a no battery setup. (I honestly don't know what's different inside that regulator, I never asked them)

Or if its still the 4 wire stator, get a bridge rectifier and Zener diode w/heat sink for a older model Triumph and go real old skool. But carry lots of spare ignition condensers if you go that route - don't ask me how I know...

The "battery eliminator" is nothing more than a high storage capacitor (condenser) that keeps the lights from flickering at low rpms. They can and will go bad with age, even if they've never been used. I'd recommend you check it. If the alternator output is good and the ignition condenser is good, it should spark with or without the battery eliminator. Note: I said "spark" - made no mention of "start"

Happy Motoring.....
 

Last edited by t150vej; Apr 12, 2020 at 05:48 PM.
Reply



All times are GMT -5. The time now is 11:11 PM.