Author Topic: Electric shift with Mag.  (Read 383 times)

Offline racerken

  • Newbie
  • *
  • Posts: 41
    • View Profile
  • Your Best Time: 8.76 1/4 mile (FED)
  • Your Track: State Capital Raceway
  • Your Vehicle: FED
  • General Location: Baton Rouge La
Electric shift with Mag.
« on: September 25, 2018, 12:42:06 PM »
I have a Dedenbear SS2 shifter solenoid I would like to use with a Vertex internal coil Mag with mechanical tach drive.  Dedenbear used to offer a Pulse Generator PG8 that connected to the cable drive on the mag and connected to the solenoid shifter  but is no longer available.  What are any other options to set up  a solenoid shifter using a mechanical tach drive?  Thanks.


Offline Paul New

  • Hero Member
  • *****
  • Posts: 601
    • View Profile
  • Your Best Time: 6.47 @ 214 MPH SBC
  • Your Engine: 387" SBC
  • Your Track: Woodburn Dragstrip
  • Your Vehicle: 2005 FED
Re: Electric shift with Mag.
« Reply #1 on: September 25, 2018, 01:16:34 PM »
A button on your steering wheel.  Not sure you’ll can get a clean signal from a Vertex mag to activate the shifter

Offline racerken

  • Newbie
  • *
  • Posts: 41
    • View Profile
  • Your Best Time: 8.76 1/4 mile (FED)
  • Your Track: State Capital Raceway
  • Your Vehicle: FED
  • General Location: Baton Rouge La
Re: Electric shift with Mag.
« Reply #2 on: September 25, 2018, 01:21:27 PM »
I don't want to activate it manually with a button. I would like it to self shift at a set rpm.  Thanks

Offline George

  • Hero Member
  • *****
  • Posts: 516
    • View Profile
  • Your Vehicle: 1964 Mercury Comet Super Stock/ M automatic
  • General Location: Midwest USA
Re: Electric shift with Mag.
« Reply #3 on: September 25, 2018, 05:30:23 PM »
IMO the MSD magneto makes the electronics so easy. We have ran the MSD12LT for 8 years with a 2 step, rpm shifter and rev control. Very dependable and have a rpm playback.

Offline wideopen231

  • Hero Member
  • *****
  • Posts: 1360
    • View Profile
  • Your Best Time: 1/8 3.70@ 198 1/4 5.78@245
  • Your Engine: Hemi 526 ci alcohol
  • Your Track: Piedmont
  • Your Vehicle: 225 CMC FED
  • General Location: NORTH CAROLINA
Re: Electric shift with Mag.
« Reply #4 on: September 25, 2018, 06:39:26 PM »
msd magneto rpm activated switch should do what you want. Just pick rpm chip you want.
Relecting obama is like shooting right foot because it did not hurt enough when you shot left foot

Offline Paul New

  • Hero Member
  • *****
  • Posts: 601
    • View Profile
  • Your Best Time: 6.47 @ 214 MPH SBC
  • Your Engine: 387" SBC
  • Your Track: Woodburn Dragstrip
  • Your Vehicle: 2005 FED
Re: Electric shift with Mag.
« Reply #5 on: September 25, 2018, 06:50:50 PM »
msd magneto rpm activated switch should do what you want. Just pick rpm chip you want.

Not with a Vertex mag

Offline Draw 3D

  • Jr. Member
  • **
  • Posts: 64
    • View Profile
  • Your Engine: Blown Alky 406 SBC
  • Your Track: Wild Horse Pass
  • Your Vehicle: 1923 T Roadster
  • General Location: Arizona
Re: Electric shift with Mag.
« Reply #6 on: September 25, 2018, 09:01:34 PM »
FIE, a sponsor here, makes a sensor that attaches to the Vertex mag cap and sends a signal to a tach pulse generator, https://fuelinjectionent.myshopify.com/collections/rpm-timing-related/products/tach-pulse-generator?variant=26288696208

Don't know what class you plan on running but check the rule book, in my class, that is not allowed hence the button on the steering wheel as stated by others.
« Last Edit: September 25, 2018, 09:04:13 PM by Draw 3D »

Offline racerken

  • Newbie
  • *
  • Posts: 41
    • View Profile
  • Your Best Time: 8.76 1/4 mile (FED)
  • Your Track: State Capital Raceway
  • Your Vehicle: FED
  • General Location: Baton Rouge La
Re: Electric shift with Mag.
« Reply #7 on: September 26, 2018, 10:28:28 AM »
From what I am seeing the tach pulse generator will activate a shift light but is not strong enough to activate s shifter solenoid.

Offline Draw 3D

  • Jr. Member
  • **
  • Posts: 64
    • View Profile
  • Your Engine: Blown Alky 406 SBC
  • Your Track: Wild Horse Pass
  • Your Vehicle: 1923 T Roadster
  • General Location: Arizona
Re: Electric shift with Mag.
« Reply #8 on: September 26, 2018, 11:49:35 AM »
From what I am seeing the tach pulse generator will activate a shift light but is not strong enough to activate s shifter solenoid.
I'm not using the pulse generator for auto shifting but if I did, I would use a relay.

Offline Spud Miller

  • Global Moderator
  • Sr. Member
  • *****
  • Posts: 316
    • View Profile
    • Fuel Injection Ent., LLC
Re: Electric shift with Mag.
« Reply #9 on: October 02, 2018, 09:59:31 AM »

 Yes, use a relay with that and you can do anything. Here's our new relay with socket:
https://fuelinjectionent.myshopify.com/collections/magneto-accessories/products/heavy-duty-relay

The tach pulse generator won't activate anything...it only makes a tach signal. You need something receiving that signal to make the RPM decision. The MSD RPM Activated switch (#8950) works great for that.

 You could also use a crank trigger pickup to feed the RPM activated switch a speed signal. A crank trigger puts out a nice, reliable signal. Better than converters or pulse generator boxes.

 Spud

Fuel Injection Enterprises, LLC
     Mechanical Injection
     Magnetos
     EFI Conversions

Offline racerken

  • Newbie
  • *
  • Posts: 41
    • View Profile
  • Your Best Time: 8.76 1/4 mile (FED)
  • Your Track: State Capital Raceway
  • Your Vehicle: FED
  • General Location: Baton Rouge La
Re: Electric shift with Mag.
« Reply #10 on: October 02, 2018, 01:22:54 PM »
Thanks all for the feedback..