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Search: Posts Made By: MMiller
Forum: RV-12 Yesterday, 09:22 PM
Replies: 8
Views: 483
Posted By MMiller
Also worth noting, two additional holes for...

Also worth noting, two additional holes for improved flow.
Forum: RV-12 11-15-2018, 07:49 PM
Replies: 1
Views: 238
Posted By MMiller
In Step 7 you fabricated these from material and...

In Step 7 you fabricated these from material and dimensions called out in figure 2
http://i66.tinypic.com/10r4yzk.jpg
Forum: RV-12 11-10-2018, 08:21 PM
Replies: 10
Views: 805
Posted By MMiller
Joe is correct, there is no resistor in Vanís box...

Joe is correct, there is no resistor in Vanís box on the Skyview version. Dynon has a dedicated input for the Rotax 24 mA sensor, so the external 200 ohm resistor is not used on the Skview version. ...
Forum: RV-12 11-10-2018, 05:51 PM
Replies: 10
Views: 805
Posted By MMiller
Brent. The Rotax oil pressure sensor uses two...

Brent. The Rotax oil pressure sensor uses two wires and has a current output not a resistance output. The output will drive 4-20mA over the rated operating range. The Dynon 101693-000 Is a three wire...
Forum: RV-12 10-21-2018, 06:27 AM
Replies: 58
Views: 15,110
Posted By MMiller
Brice, The most likely failure would be the 2.2...

Brice,
The most likely failure would be the 2.2 ohm resistor (see pic below.) This is used to limit inrush current of a cold lamp to 5 amps. It probably blew open. This shouldnít have caused any...
Forum: RV-12 10-19-2018, 10:26 AM
Replies: 58
Views: 15,110
Posted By MMiller
Thanks. Nope, no interest in selling these. If I...

Thanks.
Nope, no interest in selling these. If I were building a production version I would have made different design choices.
Forum: RV-12 10-19-2018, 09:33 AM
Replies: 58
Views: 15,110
Posted By MMiller
Scratch built replacement regulator

A few weeks ago I scratch built a new voltage regulator to replace the Ducati.

My design goals were;

Low cost “experimental” replacement
Repairable
All components are off the shelf (no custom...
Forum: RV-12 10-05-2018, 11:58 PM
Replies: 5
Views: 963
Posted By MMiller
Interesting idea. If you are against the...

Interesting idea. If you are against the stabilator stop, you need to apply double the static tension to one cable in order for the other cable to go slack. But you should contact the control pitch...
Forum: RV-12 08-08-2018, 02:40 PM
Replies: 26
Views: 5,451
Posted By MMiller
John, you are correct, I looked at 46-19 Rev-1. ...

John, you are correct, I looked at 46-19 Rev-1. Vanís no longer disables the alternator when the Master is turned off. Here is a copy of the hook-up;

http://i65.tinypic.com/33u94c4.jpg

I donít...
Forum: RV-12 08-07-2018, 06:47 PM
Replies: 26
Views: 5,451
Posted By MMiller
True. Only as long as the engine is not running...

True. Only as long as the engine is not running

through the master contractor
Yes the battery is now disconnected but the alternator output is feeding the sense/control pin of the regulator. The...
Forum: RV-12 08-07-2018, 11:07 AM
Replies: 26
Views: 5,451
Posted By MMiller
I believe you mean Dave Gamble, he published an...

I believe you mean Dave Gamble, he published an excellent builders log on a site he called Schmettering Aviation. You wonít find any data or pictures on this site, he would post here often, with a...
Forum: RV-12 07-03-2018, 07:27 PM
Replies: 5
Views: 746
Posted By MMiller
All the info you will ever need on the Amp...

All the info you will ever need on the Amp contacts used in these floating connectors;

https://drive.google.com/open?id=0ByPxADyU-DwPUUNZZzA2aFByYlE

Van’s suggestion for a crimping tool can be...
Forum: RV-12 10-06-2017, 08:30 PM
Replies: 10
Views: 1,848
Posted By MMiller
John, you remember correctly, but the step was...

John, you remember correctly, but the step was removed with the 12/27/2013 revision that added a fuel tank vent line.

Here is screenshot of the relevant instructions from a 2011 version of section...
Forum: RV-12 06-27-2017, 04:07 PM
Replies: 58
Views: 15,110
Posted By MMiller
Dale, you have a pre 2010 version, that's how...

Dale, you have a pre 2010 version, that's how those come apart. It will have PN 343620 stamped on it. The date code is above the word DUCATI, the first two digits are the year, I'm not sure if the...
Forum: RV-12 06-27-2017, 06:42 AM
Replies: 58
Views: 15,110
Posted By MMiller
The facts

If you have a pre 2010 regulator, it will fail because of INTERNAL cooling design issues, if you run these at low power, they will last forever.

If you have a 2010 or later version it will likely...
Forum: RV-12 05-27-2017, 07:23 PM
Replies: 6
Views: 2,045
Posted By MMiller
Keith, inspect the white, 12 gauge wire along its...

Keith, inspect the white, 12 gauge wire along its entire length, from the regulator to the fuse module. It may be grounded. If you don't see any issues, unplug the regulator and try again with a new...
Forum: RV-12 05-03-2017, 07:05 AM
Replies: 74
Views: 14,065
Posted By MMiller
Chris, It's not a timer and it won't reset with...

Chris,
It's not a timer and it won't reset with a new battery. They use a 1Kb serial EEPROM (Google 93C46) , it needs to be reprogrammed. It will continue to work with a new battery...until you...
Forum: RV-12 04-08-2017, 12:13 PM
Replies: 86
Views: 29,771
Posted By MMiller
Dave, I looked closer at the Ducati design and...

Dave,

I looked closer at the Ducati design and have to withdraw the fix I suggested above. There is a clearance issue between the bridge rectifier and a trace on the PCB. It may be possible to...
Forum: RV-12 03-28-2017, 07:14 PM
Replies: 86
Views: 29,771
Posted By MMiller
4/8/2017 update This improvement may cause other...

4/8/2017 update

This improvement may cause other issues...see post 78 below


Dave,

I’ve been giving a lot of thought to your question about improving the regulator while it’s opened up. We know...
Forum: RV-12 03-26-2017, 09:54 PM
Replies: 86
Views: 29,771
Posted By MMiller
How to repair a Rotax 965-349 / Ducati 362001 Rectifier Regulator.

How to repair a Rotax 965-349 / Ducati 362001 Rectifier Regulator.

This procedure only applies to regulators made after 2009, these are marked with the number 362001.

The failures are mechanical,...
Forum: RV-12 11-13-2016, 08:32 AM
Replies: 5
Views: 2,537
Posted By MMiller
Let's help Rotax fix the voltage regulator

Let's help Rotax fix the voltage regulator

Many of us have had multiple failures, some have tried alternative devices. This thread is about trying to get the attention of Rotax. I don't want to...
Forum: RV-12 09-26-2016, 05:31 PM
Replies: 5
Views: 1,515
Posted By MMiller
Tom, if your sure it's not a bad connection...

Tom, if your sure it's not a bad connection (wht/orn, wht/blue, or wht/grn) and you think it's a problem with wiper in the pot, I don't think you will have any issues using contact cleaner on this. ...
Forum: RV-12 08-27-2016, 08:51 PM
Replies: 31
Views: 6,412
Posted By MMiller
Dan, Are you sure it's a side tone (mic feedback...

Dan,

Are you sure it's a side tone (mic feedback into the head phone) or is it just a loud tone? Any chance you have a grounded wire on the stall input and you are hearing the stall warning? Vans...
Forum: RV-12 08-17-2016, 09:57 AM
Replies: 21
Views: 4,323
Posted By MMiller
You donít want to remove the fuse to open a...

You donít want to remove the fuse to open a circuit. I expect the ATC style fuse holder is rated for less than 50 mating cycles. Looking at the bigger picture, the $50 electric fuel pump will...
Forum: RV-12 07-02-2016, 06:54 AM
Replies: 22
Views: 4,688
Posted By MMiller
Scott, I came to this conclusion. I looked at...

Scott,

I came to this conclusion. I looked at three regulators with melted connectors all had the internal failed to diode plate solder connection. It is also possible that operators of these...
Forum: RV-12 07-01-2016, 09:21 PM
Replies: 22
Views: 4,688
Posted By MMiller
Scott what you are seeing is the secondary...

Scott what you are seeing is the secondary failure, the primary failure was internal plate to diode separation, this is very common in the 965 347 and 965 345 version regulators.
Forum: RV-12 06-30-2016, 08:49 PM
Replies: 22
Views: 4,688
Posted By MMiller
Aircor, Scott, Welcome to Van's Airforce. There...

Aircor, Scott,
Welcome to Van's Airforce. There is a lot of information available here. You will find hundreds of posts relating to the Rotax regulator.

Your experience with the Rotax regulator...
Forum: RV-12 06-29-2016, 07:29 AM
Replies: 253
Views: 64,451
Posted By MMiller
John, That is one method of troubleshooting, but...

John, That is one method of troubleshooting, but it comes with the risk of damaging equipment. It also depends on what your goals are.
In this case we know there is no power, so jumping it out may...
Forum: RV-12 06-28-2016, 02:34 PM
Replies: 253
Views: 64,451
Posted By MMiller
Yes, Joe is correct as usual. Dick, did you...

Yes, Joe is correct as usual.
Dick, did you confirm the wires are in the correct locations on the Rotax plug? Are you sure the small yellow wire is in "C" position and there is NO wire in the "L"...
Forum: RV-12 06-28-2016, 08:33 AM
Replies: 253
Views: 64,451
Posted By MMiller
Dick, These instructions are assuming you have a...

Dick,

These instructions are assuming you have a meter, a very limited knowledge of how to use it and no troubleshooting ability.

1) First double check the Regulator wiring. Look at the Rotax...
Forum: RV-12 06-26-2016, 03:28 PM
Replies: 253
Views: 64,451
Posted By MMiller
Dick, please review Joe's advice and post your...

Dick, please review Joe's advice and post your results.
Forum: RV-12 06-21-2016, 01:56 PM
Replies: 253
Views: 64,451
Posted By MMiller
Rich, Here is a link to the full size...

Rich,

Here is a link to the full size version;

https://drive.google.com/file/d/0ByPxADyU-DwPbFRoYl83WjV5MTg/view?usp=sharing

Yes, that is 1uf 35 volt tant cap.

the 7812 is a three lead 12V...
Forum: RV-12 06-21-2016, 10:05 AM
Replies: 253
Views: 64,451
Posted By MMiller
Dick, you may or may not find this useful. Here...

Dick, you may or may not find this useful. Here is a drawing for a test fixture I made a while back for bench testing these regulators. The voltages will be different with a battery for the load or...
Forum: RV-12 06-19-2016, 09:26 AM
Replies: 253
Views: 64,451
Posted By MMiller
Follow Joe's advice, he knows what he is talking...

Follow Joe's advice, he knows what he is talking about and will walk you through the troubleshooting process.

Please be clear when reporting voltage readings. You did not say where these voltages...
Forum: RV-12 05-30-2016, 08:30 AM
Replies: 13
Views: 3,429
Posted By MMiller
The regulator is simply a switch that turns the...

The regulator is simply a switch that turns the charging system on and off. Switching is controlled by the regulator "C" pin. If the voltage to the C pin is above 3 volts the regulator will switch...
Forum: RV-12 01-23-2016, 08:23 AM
Replies: 50
Views: 10,016
Posted By MMiller
Am I over thinking this? I donít think so. It...

Am I over thinking this? I donít think so. It looks like there may be some who donít fully understand the fuel system , its components and how they tie together.

First is the fuel return line and...
Forum: RV-12 01-17-2016, 08:39 PM
Replies: 50
Views: 10,016
Posted By MMiller
Fuel pump pressure is controlled by the diaphragm...

Fuel pump pressure is controlled by the diaphragm spring. This should not be confused with the external plunger return spring that drives the suction stroke.

The fuel pump plunger on the diaphragm...
Forum: RV-12 01-16-2016, 10:09 PM
Replies: 50
Views: 10,016
Posted By MMiller
If the external return spring on the plunger...

If the external return spring on the plunger shaft drives the suction stroke and there is no relief valve, there has to be another spring under the diaphragm to limit the compression stroke....
Forum: RV-12 11-12-2015, 08:41 PM
Replies: 63
Views: 18,172
Posted By MMiller
BigJohn, if I remember correctly you were having...

BigJohn, if I remember correctly you were having low voltage alarms and were troubleshooting your regulator in the days before the connector melted. A melted connector can be caused by a poorly...
Forum: RV-12 09-11-2015, 03:50 PM
Replies: 41
Views: 12,509
Posted By MMiller
Dick, You can get the 11mm hose from LEAF, the ...

Dick,

You can get the 11mm hose from LEAF, the Rotax PN is 956 142. But, you have to buy one meter at about $70. Lockwood has the obsolete part, 956 140, and they will sell you Ĺ meter for about...
Forum: RV-12 09-04-2015, 10:55 PM
Replies: 94
Views: 15,845
Posted By MMiller
Tom, 6 volts is too low. A review of my data...

Tom,
6 volts is too low. A review of my data logs for my 5-6 year old battery show the bus has never gone below 10.5 volts on start. I would suggest a battery load test before going any deeper into...
Forum: RV-12 09-04-2015, 04:38 PM
Replies: 94
Views: 15,845
Posted By MMiller
Tom, It's not contact failure, you are dropping...

Tom,
It's not contact failure, you are dropping the spar pin relay, we know this because the normally open contact breaks (dropping the starter contactor) and the normally closed contacts makes...
Forum: RV-12 08-31-2015, 04:03 PM
Replies: 94
Views: 15,845
Posted By MMiller
This tells us the problem is occurring in the...

This tells us the problem is occurring in the spar pin relay coil circuit. Thanks to Joe, here is a section from his Skyview schematic that shows this...
Forum: RV-12 08-31-2015, 11:54 AM
Replies: 94
Views: 15,845
Posted By MMiller
Tom, For the spar pin indicator to illuminate the...

Tom,
For the spar pin indicator to illuminate the following has to happen;

1) An open at the spar pin input (open mag switch, open wiring in mag switch series circuit, or a bad ground at the right...
Forum: RV-12 08-30-2015, 09:04 PM
Replies: 94
Views: 15,845
Posted By MMiller
Tom, Before changing the relay, you may want to...

Tom,

Before changing the relay, you may want to check the wire crimp and spade connector on the coil wire. The coil ground connection is through the mounting plate, make sure the relay is secure,...
Forum: RV-12 08-29-2015, 05:11 PM
Replies: 41
Views: 12,509
Posted By MMiller
No, part number 956-391 is the wrong part, this...

No, part number 956-391 is the wrong part, this is a 12mm dia hose. I was able get the 956-141(81mm long 11mm dia hose) from LEAF.
Forum: RV-12 08-28-2015, 08:16 PM
Replies: 41
Views: 12,509
Posted By MMiller
Here is a link to a an excel spreadsheet for...

Here is a link to a an excel spreadsheet for RV-12 rubber replacement that should answer all your questions.

https://drive.google.com/file/d/0ByPxADyU-DwPX2ZReUt6OURweE0/view?usp=sharing

If you...
Forum: RV-12 03-08-2015, 08:41 PM
Replies: 25
Views: 9,463
Posted By MMiller
Last week my engine turned 5-years old. I put...

Last week my engine turned 5-years old. I put together an RV-12 Rubber Replacement Spreadsheet, here is the link;

https://drive.google.com/file/d/0ByPxADyU-DwPX2ZReUt6OURweE0/view?usp=sharing

Mike...
Forum: RV-12 03-04-2015, 08:00 PM
Replies: 70
Views: 21,449
Posted By MMiller
Rotax has made several changes to the Ducati...

Rotax has made several changes to the Ducati Voltage Rectifier Regulator over the years. There are at least three versions, all with unique part numbers. The two most recent versions are found in...
Forum: RV-12 08-22-2013, 07:41 AM
Replies: 61
Views: 10,692
Posted By MMiller
Van’s has a zip file called “Dynon Support...

Van’s has a zip file called “Dynon Support 5.5.0"on their Download page. This contains the Dynon D180 V5.5 file and the unlock files. There is also a PDF document called “RV-12-Dynon support program...
Forum: RV-12 06-17-2012, 09:52 AM
Replies: 17
Views: 2,993
Posted By MMiller
Thank you Joe, actually low voltage on the Dynon...

Thank you Joe, actually low voltage on the Dynon display fits the theory. With reversed power plug wires, the Dynon voltage sense input is after the shunt. The displayed voltage will be offset by...
Forum: RV-12 06-16-2012, 09:10 PM
Replies: 17
Views: 2,993
Posted By MMiller
Jack, I would guess the two white, 12 gauge...

Jack, I would guess the two white, 12 gauge wires in the power plug are reversed at the fuse panel. Itís not possible to reverse the wires under the cowl, one wire is two short.

You can confirm...
Forum: RV-12 04-18-2012, 04:19 PM
Replies: 3
Views: 1,321
Posted By MMiller
Tony, I find the titles of several blank layers...

Tony, I find the titles of several blank layers more interesting.

Mike Miller
Forum: RV-12 12-28-2011, 09:03 AM
Replies: 12
Views: 4,830
Posted By MMiller
Denny, As usual there is a lot of good advice...

Denny,

As usual there is a lot of good advice above.

To test the regulator;

1) Check the Stator coils. With power off, remove the regulator plug and measure the resistance between the two heavy...
Forum: RV-12 04-19-2011, 07:46 PM
Replies: 3
Views: 1,245
Posted By MMiller
try this...

try this link

http://contrails.free.fr/elec_ducati_en.php
Forum: RV-12 12-23-2010, 10:21 PM
Replies: 7
Views: 1,995
Posted By MMiller
left & right EGT display reversed on the Dynon

Check your EGTs. My left and right EGT sensor wires pairs were reversed at the 25-pin D connector. A call to SteinAir confirmed;
1) My EGT harness was wired to Vans spec.
2) My EGT harness did not...
Forum: RV-12 11-30-2010, 08:24 PM
Replies: 9
Views: 6,245
Posted By MMiller
RV-12 Wiring Diagram / Schematic

Here is a link to the Wiring Diagram / Schematic for my RV-12, (yours may vary.) Iím providing this for informational use only, so use it at your own risk. If you find a mistake please send me an...
Showing results 1 to 57 of 57

 
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