« previous next »
Pages: [1] 2   Go Down

Author Topic: Looking for Ignition Ideas  (Read 9466 times)

0 Members and 1 Guest are viewing this topic.

Offline ealanm

  • Enthusiast
  • **
  • Posts: 100
Looking for Ignition Ideas
« on: April 18, 2010, 10:07:27 PM »
I'm running a CB750K2 engine in a vintage race car.  It currently has stock ignition.  I want to upgrade the ignition system, and I'm looking for suggestions.  Ideally, I'd like something based on technology that was available in the early 70s, to be vintage authentic, but I might consider something more modern if there was a good enough reason.  Thoughts?
Logged
"Speed, it seems to me, provides the one genuinely modern pleasure."
--Aldous Huxley

Offline scottly

  • Global Moderator
  • Really Old Timer ...
  • *****
  • Posts: 16,262
  • Humboldt, AZ
Re: Looking for Ignition Ideas
« Reply #1 on: April 18, 2010, 10:30:30 PM »
I don't think you are going to find much from the early '70s. I have a '77 Cycle magazine article that details the use of 4 automotive coils for 4 cylinder bikes, at the expense of point life. There were home-brew CD type ignitions, that used points for triggers (like Hondaman's??), that might be just what you're looking for..     
Logged
Don't fix it if it ain't broke!
Helmets save brains. Always wear one and ride like everyone is trying to kill you....

Offline MRieck

  • Really Old Timer ...
  • *******
  • Posts: 10,560
  • Big ideas....
Re: Looking for Ignition Ideas
« Reply #2 on: April 18, 2010, 10:36:26 PM »
 A Dyna 2000.
Logged
Owner of the "Million Dollar CB"

Offline scottly

  • Global Moderator
  • Really Old Timer ...
  • *****
  • Posts: 16,262
  • Humboldt, AZ
Re: Looking for Ignition Ideas
« Reply #3 on: April 18, 2010, 10:46:29 PM »
Did Dyna date back to the early '70s? (I never heard of them until I joined this forum.) I have a Gerex electronic that dates to at least the late '70s that works very well.
Logged
Don't fix it if it ain't broke!
Helmets save brains. Always wear one and ride like everyone is trying to kill you....

Offline MaaseyRacer

  • Enthusiast
  • **
  • Posts: 194
    • Fuelist
Re: Looking for Ignition Ideas
« Reply #4 on: April 18, 2010, 11:12:38 PM »
Cycle X?
Logged
1961 CB72
1961 CB77
1962 CB77
1962 CB77
1965 CB160
1970 Triumph Bonneville
1972 Honda CB450
1975 Norton Commando

Offline michrobi

  • Goldenrod blew a 5" hole out the front with a
  • Hot Shot
  • ***
  • Posts: 382
  • On a neverending quest for more garage space
Re: Looking for Ignition Ideas
« Reply #5 on: April 19, 2010, 12:28:05 AM »
Martek 440 is a vintage techie ignition.
Logged
-Mike

'78 CB750F All stock except for the powerplant. Jived it off my Dad in the spring of '94. He had it since 1980 and it's the first bike I ever rode on.

Current project: http://forums.sohc4.net/index.php?topic=67756

How's them SOHC4 patches coming?

Offline cb750k7

  • Hot Shot
  • ***
  • Posts: 427
  • My CB AKA Charlie Brown...(K8 frame with K6 engine
Re: Looking for Ignition Ideas
« Reply #6 on: April 19, 2010, 04:46:28 AM »
What about HONDAMAN ignition?
Logged
Found real friends here !!!

Offline 754

  • Really Old Timer ...
  • *******
  • Posts: 29,058
Re: Looking for Ignition Ideas
« Reply #7 on: April 19, 2010, 08:35:02 AM »
You would be happy with a Maxi-Dwell..
Logged
Maker of the WELDLESS 750 Frame Kit
dodogas99@gmail.com
Kelowna B.C.       Canada

My next bike will be a ..ANFOB.....

It's All part of the ADVENTURE...

73 836cc.. Green, had it for 3 decades!!
Lost quite a few CB 750's along the way

Offline bucky katt

  • Old Timer
  • ******
  • Posts: 4,564
  • i am a pastafarian!
    • facebook
Re: Looking for Ignition Ideas
« Reply #8 on: April 19, 2010, 08:59:53 AM »
Quote from: cb750k7 on April 19, 2010, 04:46:28 AM
What about HONDAMAN ignition?

+1,000,000!  i love my hondaman ignition.
Logged
Of all God's creatures there is only one that cannot be made the slave of the lash. That one is the cat. If man could be crossed with the cat it would improve man, but it would deteriorate the cat.
Mark Twain - Notebook, 1894

Offline kos

  • Hot Shot
  • ***
  • Posts: 718
    • m3racing.com
Re: Looking for Ignition Ideas
« Reply #9 on: April 19, 2010, 11:36:09 AM »
I'm with Mike on this Get over the Classic aspect and get a Dyna 2000 or at least a Dyna S! The Dyna S hides under standard point cover so they will never know!


KOS

Logged
220...221, whatever it takes.

Offline BLUE71TURBO

  • Master
  • *****
  • Posts: 1,849
Re: Looking for Ignition Ideas
« Reply #10 on: April 19, 2010, 12:29:25 PM »
 A.R.D. MAGNETO IGNITION.   
                       
                       
Logged
Remember; Before you can be old and wise, you must first be young and stupid !

Offline kos

  • Hot Shot
  • ***
  • Posts: 718
    • m3racing.com
Re: Looking for Ignition Ideas
« Reply #11 on: April 19, 2010, 12:57:13 PM »
Mags are nice, but in this period...no advance was Incorporated so they were notoriously hard to start without a lot of pushing or rollers. And they had POINTS!

KOS
Logged
220...221, whatever it takes.

Offline BLUE71TURBO

  • Master
  • *****
  • Posts: 1,849
Re: Looking for Ignition Ideas
« Reply #12 on: April 19, 2010, 01:46:28 PM »
 The first A.R.D. magnetos had locked in full advance like this.........
             

 The next style was like this with full advance locked in ............
             


 The last style was a C.D.M. A.R.D. Magneto. It was a ( Capacitive Discharge Magneto )  Which is an electronic pickup setup, no points
 and it has a toggle switch to lockout the advance so startup is real easy. After startup you switch to run and off you go.   ;D
 Here's a picture of a C.D.M. A.R.D  magneto that I picked up for a KAWASAKI. No points and notice the toggle switch on the top to
 lockout the full advance at startup. Yes, the first A.R.D. mags were a #$%* to start. Especially when they kick back !!  :o

             


 This is the same setup i run on my turbo'ed 750   ;D

           
Logged
Remember; Before you can be old and wise, you must first be young and stupid !

Offline kos

  • Hot Shot
  • ***
  • Posts: 718
    • m3racing.com
Re: Looking for Ignition Ideas
« Reply #13 on: April 19, 2010, 02:02:29 PM »
Is that bottom bike a turbo with a Solex cabB?

KOS
Logged
220...221, whatever it takes.

Offline ealanm

  • Enthusiast
  • **
  • Posts: 100
Re: Looking for Ignition Ideas
« Reply #14 on: April 19, 2010, 02:09:51 PM »
Thanks, everyone, those are some great ideas.  That magneto system would be very cool for vintage racing.  I know mags have their drawbacks, but if my objective was to avoid drawbacks I wouldn't be racing vintage, would I?
Logged
"Speed, it seems to me, provides the one genuinely modern pleasure."
--Aldous Huxley

Offline 754

  • Really Old Timer ...
  • *******
  • Posts: 29,058
Re: Looking for Ignition Ideas
« Reply #15 on: April 19, 2010, 07:34:40 PM »
KOS. its an SU CV carb, good chance its from Rivera Engineering.

I think the guy that stsarted this topic wants a real period ignition..  to keep in the spirit of what he is doing. I am sure if you say 70s it includes the early Dyna models..
Logged
Maker of the WELDLESS 750 Frame Kit
dodogas99@gmail.com
Kelowna B.C.       Canada

My next bike will be a ..ANFOB.....

It's All part of the ADVENTURE...

73 836cc.. Green, had it for 3 decades!!
Lost quite a few CB 750's along the way

Offline Howell

  • Honda the power of dreams
  • Hot Shot
  • ***
  • Posts: 573
    • CB500 classic racing
Re: Looking for Ignition Ideas
« Reply #16 on: April 20, 2010, 11:23:07 AM »
Quote from: 754 on April 19, 2010, 07:34:40 PM
KOS. its an SU CV carb, good chance its from Rivera Engineering.

I think the guy that stsarted this topic wants a real period ignition..  to keep in the spirit of what he is doing. I am sure if you say 70s it includes the early Dyna models..

The best you can get , but it's modern:

ELZ = German
 http://doc.honda4.nl/elz2coil/Ignition%20En%20rev%20b.pdf
« Last Edit: April 20, 2010, 11:31:32 AM by Howell »
Logged
You meet the nicest people on a Honda

esw07

  • Guest
Re: Looking for Ignition Ideas
« Reply #17 on: April 20, 2010, 01:34:02 PM »
This might be a little bit more simplistic of a solution, but try double springing your points, that is if you want to stick with the points and save a few bucks over an A.R.D. ignition or the likes.

Double springing will take out a bit of the flutter that these tuned engines get at higher rpm's. Heres a link to an article that goes more in depth with the concept, plus it works great if you're on a budget.

http://www.motorcycleproject.com/motorcycle/text/sohcign.html
Logged

Offline scottly

  • Global Moderator
  • Really Old Timer ...
  • *****
  • Posts: 16,262
  • Humboldt, AZ
Re: Looking for Ignition Ideas
« Reply #18 on: April 20, 2010, 06:52:42 PM »
Quote from: ealanm on April 19, 2010, 02:09:51 PM
Thanks, everyone, those are some great ideas.  That magneto system would be very cool for vintage racing.  I know mags have their drawbacks, but if my objective was to avoid drawbacks I wouldn't be racing vintage, would I?

Go for the magneto! They do have advantages, too: as RPM goes up, so does spark energy, unlike a regular coil system.
Logged
Don't fix it if it ain't broke!
Helmets save brains. Always wear one and ride like everyone is trying to kill you....

Offline 754

  • Really Old Timer ...
  • *******
  • Posts: 29,058
Re: Looking for Ignition Ideas
« Reply #19 on: April 20, 2010, 07:12:09 PM »
Speaking of period mods, you may want to try Webers..

 What do you run for carbs..?
Logged
Maker of the WELDLESS 750 Frame Kit
dodogas99@gmail.com
Kelowna B.C.       Canada

My next bike will be a ..ANFOB.....

It's All part of the ADVENTURE...

73 836cc.. Green, had it for 3 decades!!
Lost quite a few CB 750's along the way

Offline scottly

  • Global Moderator
  • Really Old Timer ...
  • *****
  • Posts: 16,262
  • Humboldt, AZ
Re: Looking for Ignition Ideas
« Reply #20 on: April 20, 2010, 07:48:55 PM »
10+ for Webers: I believe the setup data that I posted on this forum was based on your type of racing, ealanm. I extrapolated the data for 1 liter motors to an 836, that revved higher.. 
Logged
Don't fix it if it ain't broke!
Helmets save brains. Always wear one and ride like everyone is trying to kill you....

Offline Big Jay

  • Expert
  • ****
  • Posts: 1,252
    • CBRzone
Re: Looking for Ignition Ideas
« Reply #21 on: April 21, 2010, 07:43:03 PM »
Quote from: MRieck on April 18, 2010, 10:36:26 PM
A Dyna 2000.

Yep. Nothing else is available that makes more power.
Logged

Offline MRieck

  • Really Old Timer ...
  • *******
  • Posts: 10,560
  • Big ideas....
Re: Looking for Ignition Ideas
« Reply #22 on: April 21, 2010, 09:11:12 PM »
Quote from: Howell on April 20, 2010, 11:23:07 AM
Quote from: 754 on April 19, 2010, 07:34:40 PM
KOS. its an SU CV carb, good chance its from Rivera Engineering.

I think the guy that stsarted this topic wants a real period ignition..  to keep in the spirit of what he is doing. I am sure if you say 70s it includes the early Dyna models..

The best you can get , but it's modern:

ELZ = German
 http://doc.honda4.nl/elz2coil/Ignition%20En%20rev%20b.pdf
have you thought about reducing the length of those CR adapters?
Logged
Owner of the "Million Dollar CB"

Offline kos

  • Hot Shot
  • ***
  • Posts: 718
    • m3racing.com
Re: Looking for Ignition Ideas
« Reply #23 on: April 22, 2010, 07:16:06 AM »
Quote from: Big Jay on April 21, 2010, 07:43:03 PM
Quote from: MRieck on April 18, 2010, 10:36:26 PM
A Dyna 2000.

Yep. Nothing else is available that makes more power.

And is so tune-able !

KOS
Logged
220...221, whatever it takes.

Offline ealanm

  • Enthusiast
  • **
  • Posts: 100
Re: Looking for Ignition Ideas
« Reply #24 on: April 22, 2010, 09:19:40 AM »
Quote from: 754 on April 20, 2010, 07:12:09 PM
What do you run for carbs..?

The engine that it's in it now is all stock, including the carbs.  But I'm building up a vintage race engine that has Hilborn fuel injection.
Logged
"Speed, it seems to me, provides the one genuinely modern pleasure."
--Aldous Huxley
Pages: [1] 2   Go Up
« previous next »