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Rpm sensor for electronic ignition

Old 01-02-2012, 05:31 AM
  #1  
JeffinTD
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Default Rpm sensor for electronic ignition

I'm getting parts together to do a 110 Rascal with a gas engine that has an tach output lead.

I could have sworn Specktrum had a way to attach that to the telemetry module, but now can't find it?

I thought it would be cleaner and more elegant than the optical rpm sensor...
Old 01-02-2012, 06:53 AM
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KC36330
 
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Default RE: Rpm sensor for electronic ignition

look up the Spektrum SPMA9569 and see if that's what you're after.
Old 01-02-2012, 11:48 AM
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SkidMan
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Default RE: Rpm sensor for electronic ignition

The Spektrum SPMA9569 will work in some circumstances but not others.

It works just fine on my NGH GT17 with a front carb but due to the way it functions (mounts on the rear of the engine) it will not work on my rear-carb DLE-20.

What a number of us are waiting for it an interface that will plug into an electronic ignition tachometer output. I did see a schematic that some guy was going to build using some opto-isolators but I never saw if he was able to test his design. Many electronic ignition modules either have a tach output or a  "Y" can be installed in the hall effect wiring.

I'm hoping that Spektrum will release a product that will do this.

Paul
Old 01-02-2012, 02:53 PM
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JeffinTD
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Default RE: Rpm sensor for electronic ignition

Yeah, that's what I was hoping was out there.
Old 01-02-2012, 03:11 PM
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SkidMan
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Default RE: Rpm sensor for electronic ignition

I just read through a thread on a different forum (FG) about this issue.

Although Horizon told someone something they thought would work (but didn't), I haven't found an answer yet.

One would think that it would make a great add-on for Spektrum.

Paul
Old 01-02-2012, 03:14 PM
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SkidMan
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Default RE: Rpm sensor for electronic ignition

If you do a search over at that other forum for "DLE-30v2 tachometer feed" you can find the schematic I mentioned earlier. (it is supposed to work with the Graupner Hott telemetry module).

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