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Dynon RPM

 
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VHMUM(at)bigpond.com
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PostPosted: Sun Jun 22, 2008 12:59 am    Post subject: Dynon RPM Reply with quote

Anyone got a Dynon thats flying. Having trouble getting the Tacho to read
correct . It under reads by 200rpm. We have tried several resistors

Chris


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rdoerr(at)kc.rr.com
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PostPosted: Sun Jun 22, 2008 4:37 am    Post subject: Dynon RPM Reply with quote

Chris, make sure you have the Pulses per Rev setting in the Dynon set correctly. Mine is set to 1.5 and that is with dual Slick Mags. If will be different if you have light speed etc.

It would also be helpful to have a optical sensor tach like the ones used for Remote Control Airplanes. They work well at around $15 for these tests.

Ray

---- Chris and Susie McGough <VHMUM(at)bigpond.com> wrote:
Quote:


Anyone got a Dynon thats flying. Having trouble getting the Tacho to read
correct . It under reads by 200rpm. We have tried several resistors

Chris






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jesse(at)saintaviation.co
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PostPosted: Sun Jun 22, 2008 4:43 am    Post subject: Dynon RPM Reply with quote

I have gotten several Dynon's flying. Never had a problem with that.
The only place I have seen an issue is when at high RPM's with a
resistor that isn't big enough to dampen the spikes, as long as the
"pulses per revolution" is set to 1.5, I think it is. I have never
had a problem with bad readings at low RPM's. Where exactly are you
seeing the issue? Are you seeing it on both mags or just on one
specifically?

Jesse Saint
Saint Aviation, Inc.
jesse(at)saintaviation.com
Cell: 352-427-0285
Fax: 815-377-3694

On Jun 22, 2008, at 4:53 AM, Chris and Susie McGough wrote:

Quote:

>

Anyone got a Dynon thats flying. Having trouble getting the Tacho to
read correct . It under reads by 200rpm. We have tried several
resistors

Chris




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VHMUM(at)bigpond.com
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PostPosted: Sun Jun 22, 2008 4:57 am    Post subject: Dynon RPM Reply with quote

Jesse I have the 2 sensor wires going to the switch with a resistor on each.
Dynon is set to1.5. I have not tried individual mags as do not know how.

Chris
---


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jesse(at)saintaviation.co
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PostPosted: Sun Jun 22, 2008 5:26 am    Post subject: Dynon RPM Reply with quote

Run it with the switch on left and then on right and see how it
compares to an optical tach. You do have dual slicks? Make sure your
optical tach is correct also. I haven't seen one with problems, but
it is definitely possible. Also, are you reading 200rpm off at a
certain reading, or at all rpm's? If the 200 is constant, then I
can't imagine what else could be the difference since a wrong setting
in the Dynon should give you a difference relative to rpm.

Jesse Saint
Saint Aviation, Inc.
jesse(at)saintaviation.com
Cell: 352-427-0285
Fax: 815-377-3694

On Jun 22, 2008, at 8:53 AM, Chris and Susie McGough wrote:

[quote]
>

Jesse I have the 2 sensor wires going to the switch with a resistor
on each. Dynon is set to1.5. I have not tried individual mags as do
not know how.

Chris
---


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