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Big Block Engine, Crank Trigger 1/25

  • Image 1
  • Real World Crank Trigger
Price:
$2.00
SKU:
FA-E-TRW-BBC
Current Stock:
7
Quantity:


Product Description

Includes crank trigger wheel, sensor mount and adjustable sensor mounting bracket.

A crank triggered ignition system can make more horsepower than a distributor triggered system. A crank triggered system can often make more power and produce more consistency due to its inherent timing stability. A crank trigger system is typically composed of three main components: a trigger wheel, pickup, and a pickup mounting bracket. Although the triggering components in a distributor or Pro Mag generator are very similar, there is one major difference - they are connected to the crankshaft through a series gears, shafts, belts, and other drive assemblies. Typical power transmission components include, but are not limited to, the cam drive (gear or belt), camshaft, and an offset magneto drive that also utilizes gears or belts. From the instant the throttle is opened to the second the chutes are pulled, the engine operating conditions are changing. Although the driver may never lift off the throttle, engine and drivetrain harmonics can wreak havoc on timing stability. Torsional vibrations in the camshaft and subsequent drive assemblies can combine to produce staggering fluctuations in ignition timing.

Having described the shortcomings of a conventional ignition trigger system, it should become apparent that the crankshaft is the most logical place to obtain a stable trigger signal.

crank-trigger-pic-2.jpg     crank-trigger-diagram.jpg

Photo etched out .015" nickel-silver plate.
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Product Reviews

  1. Great detail for your street racer. 5 Star Review

    Posted by on 19 May 2017

    This is an excellent addition to your motor build for your Pro Street racer that you have gone all out on.


  2. Great Detail 5 Star Review

    Posted by on 11 Jun 2015

    Used on BBC Pro Tour motor. Just the added detail your don't normally find, set your build apart from the rest. Scott truly makes some incredible parts.


  3. Beautiful craftmanship 5 Star Review

    Posted by on 27 Jun 2014

    I've not used mine yet, but I want to put it in a pro mod BBC build and not have to worry about wiring up a mag.

    This gives the model a more 1:1 appeal with a DIS coil pack, which is easy to create and the ability to construct a crank sensor out of some cheap styrene & wire.



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