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Search: Posts Made By: Mich48041
Forum: RV-12/RV-12iS 04-13-2021, 11:08 PM
Replies: 11
Views: 845
Posted By Mich48041
Have you checked for inlet air leaks?

Have you checked for inlet air leaks?
Forum: RV-12/RV-12iS 04-11-2021, 08:46 AM
Replies: 3
Views: 535
Posted By Mich48041
If the grip on fuse terminals is not strong...

If the grip on fuse terminals is not strong enough to prevent a fuse from falling out,
then the grip is not strong enough to provide a good electrical connection either.
Forum: Electrical Systems 04-08-2021, 04:13 AM
Replies: 7
Views: 276
Posted By Mich48041
Try ExpressPCB...

Try ExpressPCB (https://www.expresspcb.com/expresspcb-classic-pcb-layout-software/#wow-modal-id-1) classic. It is free but they will ask for your email address. It is intuitive and very easy to...
Forum: RV-12/RV-12iS 04-07-2021, 05:54 PM
Replies: 285
Views: 62,294
Posted By Mich48041
Here is an old picture showing gascolator...

Here is an old picture showing gascolator temperature.
I moved the thermocouple so that now it measures voltage regulator temperature.
The ammeter might have been in that location. The ammeter never...
Forum: RV-12/RV-12iS 04-07-2021, 11:17 AM
Replies: 285
Views: 62,294
Posted By Mich48041
THERMOCOUPLE

Piper J3, the Dynon D-180 has a thermocouple input on EFIS pins 27 & 28. If that input is free,
a type J thermocouple can be connected. Omega has part number WTJ-14-36...
Forum: RV-12/RV-12iS 04-06-2021, 08:23 AM
Replies: 76
Views: 20,212
Posted By Mich48041
See this post about the correct way to mount a...

See this post about the correct way to mount a reed switch.
https://vansairforce.net/community/showpost.php?p=1515954&postcount=14
Forum: RV-12/RV-12iS 04-06-2021, 08:20 AM
Replies: 15
Views: 3,288
Posted By Mich48041
A magnet is much more effective at closing a reed...

A magnet is much more effective at closing a reed switch if the magnet and reed switch
are mounted parallel with each other, NOT perpendicular as originally designed. The picture
below came from the...
Forum: RV-12/RV-12iS 04-05-2021, 03:48 AM
Replies: 12
Views: 771
Posted By Mich48041
Set the fuel cap on the pilot's seat.

Set the fuel cap on the pilot's seat.
Forum: Electrical Systems 04-02-2021, 09:33 AM
Replies: 28
Views: 3,664
Posted By Mich48041
Dual diode part number: 863-MBRF20L45CTG $1...

Dual diode part number: 863-MBRF20L45CTG $1 each. Buy one for each load. 10 amps max if kept cool.
Use heat conductive paste between diode and metal surface. Connect center pin to load.
Forum: RV-12/RV-12iS 03-30-2021, 08:31 PM
Replies: 8
Views: 608
Posted By Mich48041
Is it true that, worldwide, Rotax has sold more...

Is it true that, worldwide, Rotax has sold more aircraft engines than all of the other manufactures COMBINED?
Forum: Electrical Systems 03-30-2021, 11:10 AM
Replies: 3
Views: 231
Posted By Mich48041
I have APEM switch part number ISR3SAD600 (Mouser...

I have APEM switch part number ISR3SAD600 (Mouser 642-ISR3SAD6) and like it.https://www.mouser.com/images/apem/images/ITP_ISR3SAD600_t.JPG
Forum: Electrical Systems 03-23-2021, 05:33 PM
Replies: 6
Views: 524
Posted By Mich48041
There is a big chance of damaging avionics if...

There is a big chance of damaging avionics if battery polarity is reversed.
Forum: RV-12/RV-12iS 03-23-2021, 12:21 PM
Replies: 12
Views: 1,105
Posted By Mich48041
Lubricate the AST hinge pins and linkage pivot...

Lubricate the AST hinge pins and linkage pivot points. If the trim is still too sluggish, adjust the trim speed pot.
Consider replacing the Ducati regulator with eBay item number 233489024206 or...
Forum: Electrical Systems 03-06-2021, 02:26 PM
Replies: 4
Views: 552
Posted By Mich48041
The temperature probe should work without being...

The temperature probe should work without being grounded. But the installation manual says it should be grounded to the airframe. Perhaps for lightning protection? Maybe g3xpert will comment.
Forum: Electrical Systems 03-03-2021, 08:37 PM
Replies: 26
Views: 2,203
Posted By Mich48041
The strobe negative and positive power wires...

The strobe negative and positive power wires should be a twisted pair.
Try running the negative strobe wire all of the way to the alternator mounting bracket.
If nothing else solves the problem, try...
Forum: Electrical Systems 02-28-2021, 08:26 PM
Replies: 10
Views: 692
Posted By Mich48041
The screw is not part of the electrical current...

The screw is not part of the electrical current path. Current flows directly from the ring terminal to the capacitor terminal post.
If you use thread locker, use it sparingly. You might want to...
Forum: Electrical Systems 02-28-2021, 05:37 PM
Replies: 10
Views: 692
Posted By Mich48041
You could put a little dab of blue Loctite on the...

You could put a little dab of blue Loctite on the threads if the screw or wire is subject to vibration.
Forum: Electrical Systems 02-28-2021, 08:19 AM
Replies: 10
Views: 692
Posted By Mich48041
By load, do you mean electrical load? Not to...

By load, do you mean electrical load? Not to worry, one wire will carry the current. Notice that the grounded terminal only has one wire. The current through each capacitor terminal is equal. ...
Forum: Electrical Systems 02-26-2021, 03:42 PM
Replies: 32
Views: 1,661
Posted By Mich48041
Have you checked the voltage with a meter? The...

Have you checked the voltage with a meter? The problem could be failure of the charging system.
Voltage should be around 14. If less than 13 at cruise RPM, the charging system is definitely not...
Forum: Electrical Systems 02-20-2021, 08:11 PM
Replies: 28
Views: 2,212
Posted By Mich48041
Sharpie ink fades away and disappears after a few...

Sharpie ink fades away and disappears after a few years.
Forum: Electrical Systems 02-20-2021, 08:25 AM
Replies: 25
Views: 3,454
Posted By Mich48041
Reduce Charging Current

I am offering this circuit for your entertainment. I am not necessarily recommending
it because adding components increases the chances of failure.
EarthX recommends adding a diode to limit charging...
Forum: RV-12/RV-12iS 02-20-2021, 06:32 AM
Replies: 17
Views: 2,598
Posted By Mich48041
I installed the John Deere regulator 4 and a half...

I installed the John Deere regulator 4 and a half years ago with heat conductive paste, a cooling shroud and blast tube from the air duct. I monitor its temperature with a thermocouple. It rarely...
Forum: RV-12/RV-12iS 02-18-2021, 06:49 AM
Replies: 17
Views: 2,598
Posted By Mich48041
14.1 volts is fine. My Ducati regulator put out...

14.1 volts is fine. My Ducati regulator put out 13.8 before I replaced it with a John Deere.
Forum: RV-12/RV-12iS 02-13-2021, 05:06 PM
Replies: 10
Views: 1,886
Posted By Mich48041
Greg and Scott at Van's Aircraft monitor these...

Greg and Scott at Van's Aircraft monitor these forums. Perhaps they will do some
flight tests with different electrical loads while recording the regulator temperature.
Then we will have the facts...
Forum: RV-12/RV-12iS 02-13-2021, 03:32 AM
Replies: 10
Views: 1,886
Posted By Mich48041
It is true that there are shunt type voltage...

It is true that there are shunt type voltage regulators. But a shunt type can not
possibly be used with the Rotax iS. The Rotax iS generator output is rated at 420 watts.
A shunt type would need...
Forum: RV-12/RV-12iS 02-12-2021, 01:54 PM
Replies: 10
Views: 1,886
Posted By Mich48041
It will be easy enough to test. Put a...

It will be easy enough to test. Put a thermocouple on the voltage regulator and go fly.
Observe the thermocouple temperature first with a light electrical load, and then with
a heavy electrical...
Forum: RV-12/RV-12iS 02-12-2021, 11:39 AM
Replies: 189
Views: 48,051
Posted By Mich48041
The aft most holes in the nose gear leg were not...

The aft most holes in the nose gear leg were not aligned with holes in the bottom
of the fuselage. I had to elongate the holes in order to get the screws in.
The alignment problem might be due to...
Forum: RV-12/RV-12iS 02-12-2021, 09:05 AM
Replies: 10
Views: 1,886
Posted By Mich48041
The Rotax alternators are permanent magnet type. ...

The Rotax alternators are permanent magnet type. Thus they do not have field windings.
I can not believe that, "These regulators reject any unused electrical power
as heat." Van's must have been...
Forum: RV-12/RV-12iS 02-11-2021, 04:13 PM
Replies: 17
Views: 2,598
Posted By Mich48041
Search eBay for AM101406. Connect large yellow...

Search eBay for AM101406.
Connect large yellow wires from alternator to pins labeled "AC".
"B+" is output to aircraft main power bus.
L (Lamp) is not connected.
"IGW" connects to small yellow control...
Forum: RV-12/RV-12iS 02-11-2021, 02:55 PM
Replies: 17
Views: 2,598
Posted By Mich48041
No matter the make or model or mounting location,...

No matter the make or model or mounting location, the secret to long voltage
regulator life is to keep it cool. Be sure to use heat conductive paste between
metal parts of the regulator and the...
Forum: Electrical Systems 02-05-2021, 08:59 AM
Replies: 11
Views: 808
Posted By Mich48041
How often are the wings removed? You might...

How often are the wings removed? You might consider a service loop with soldered or crimped splices.
Forum: Electrical Systems 01-31-2021, 07:46 PM
Replies: 3
Views: 496
Posted By Mich48041
Extra connections mean more chances for...

Extra connections mean more chances for failures.
Future changes might not happen.
If they do, it is not that hard to reposition D-Sub pins.
Forum: RV-12/RV-12iS 01-27-2021, 09:02 AM
Replies: 8
Views: 2,008
Posted By Mich48041
Mark, You are right that the regulator has a...

Mark, You are right that the regulator has a connection to the Skyview.
But evidently there is a failure mode where the regulator has failed but tells the Skyview that it is OK.
I installed a John...
Forum: Electrical Systems 01-26-2021, 05:26 PM
Replies: 23
Views: 1,782
Posted By Mich48041
A bad ground can cause strange things to happen.

A bad ground can cause strange things to happen.
Forum: RV-12/RV-12iS 01-26-2021, 05:12 PM
Replies: 8
Views: 2,008
Posted By Mich48041
According to Van's electrical wiring diagram,...

According to Van's electrical wiring diagram, there is no connection between the
voltage regulator and the Skyview. And there is no Skyview input labeled VREG.
Could the VGEG indicator on your...
Forum: Electrical Systems 01-26-2021, 07:40 AM
Replies: 23
Views: 1,782
Posted By Mich48041
If there is no avionics bus, then it can not...

If there is no avionics bus, then it can not fail. Avionics in my plane are connected to the main bus.
Forum: Electrical Systems 01-24-2021, 08:50 AM
Replies: 23
Views: 5,928
Posted By Mich48041
Maybe you meant to write rectifier, not rheostat....

Maybe you meant to write rectifier, not rheostat. A rectifier and diode
are the same thing. A bridge diode contains 4 diodes inside of one case.
Forum: Electrical Systems 01-24-2021, 08:41 AM
Replies: 23
Views: 5,928
Posted By Mich48041
A rheostat and a bridge diode are two completely...

A rheostat and a bridge diode are two completely different components not
related at all, except for being electrical components. A rheostat is a variable
resistor used to restrict current flow. ...
Forum: RV-12/RV-12iS 01-20-2021, 11:08 AM
Replies: 3
Views: 876
Posted By Mich48041
Nord Lock washers are used in pairs. Make sure...

Nord Lock washers are used in pairs. Make sure they are orientated correctly.
Forum: Electrical Systems 01-19-2021, 05:38 PM
Replies: 16
Views: 1,994
Posted By Mich48041
A battery contactor and starter contactor need to...

A battery contactor and starter contactor need to be on the forward side of the firewall.
An ANL or similar current limiter is needed for the alternator "B" lead, but it can be located either on...
Forum: RV-12/RV-12iS 01-18-2021, 08:58 PM
Replies: 25
Views: 3,585
Posted By Mich48041
I read on Vansairforce about a RV-12 accident...

I read on Vansairforce about a RV-12 accident caused by a distracted pilot who forgot to latch the canopy prior to takeoff.
The RV-12 hit the runway while the pilot was trying to latch the...
Forum: Electrical Systems 01-18-2021, 06:13 AM
Replies: 22
Views: 4,034
Posted By Mich48041
The way permanent-magnet alternator regulators...

The way permanent-magnet alternator regulators work is by opening the
alternator's output with a solid-state switch for part of the AC sinewave.
Forum: Electrical Systems 01-17-2021, 07:59 PM
Replies: 7
Views: 584
Posted By Mich48041
Many aircraft do not have an avionics bus. Then...

Many aircraft do not have an avionics bus.
Then there is no switch or relay or contactor to fail.
Forum: Electrical Systems 01-14-2021, 02:23 PM
Replies: 34
Views: 3,640
Posted By Mich48041
If the fuse blows, how do you know which wire or...

If the fuse blows, how do you know which wire or load caused it?
Troubleshooting intermittent problems can be very frustrating.
Make it easier by having one fuse for each load.
Forum: RV-12/RV-12iS 01-14-2021, 07:30 AM
Replies: 2
Views: 776
Posted By Mich48041
Correct. Those rivets are not structural. All...

Correct. Those rivets are not structural. All they have to do is keep the nutplates from falling out when the screws are tightened.
Consider using blue Loctite thread locker instead of replacing...
Forum: RV-12/RV-12iS 01-13-2021, 06:17 AM
Replies: 10
Views: 1,689
Posted By Mich48041
I agree with Mike Miller and Scott. I converted...

I agree with Mike Miller and Scott. I converted Mike's picture to text:
LP3-F1G121R Spar Pin Indicator/Button
K2ABNPCCFA Master Sw DPDT
K2ABHPCABA Avionics, Nav/Strobc. A/P Sw's...
Forum: Electrical Systems 01-09-2021, 06:36 PM
Replies: 4
Views: 571
Posted By Mich48041
If the LED does not have an internal LED, one...

If the LED does not have an internal LED, one needs to be installed in series.
An online LED Resistor Calculator (https://ohmslawcalculator.com/led-resistor-calculator) will come in handy.
You need...
Forum: Electrical Systems 01-09-2021, 06:12 PM
Replies: 12
Views: 1,163
Posted By Mich48041
It looks like current through the zener diode is...

It looks like current through the zener diode is limited by the 10 amp fuse.
Forum: Electrical Systems 01-09-2021, 01:30 PM
Replies: 44
Views: 5,111
Posted By Mich48041
The drawing that you attached has a risk. If the...

The drawing that you attached has a risk. If the alternator shorts out and blows the
ANL fuse, then the whole electrical system fails (no battery backup).
500 RV-12s are flying with the alternator...
Forum: RV-12/RV-12iS 01-08-2021, 07:35 PM
Replies: 11
Views: 1,896
Posted By Mich48041
Per Van's service bulletin 16-05-26...

Per Van's service bulletin 16-05-26 (https://www.vansaircraft.com/service-information-and-revisions/sb-16-05-26/)
Data plate must include country of OEM per ASTM F2745-11, Sect. 6.3.2
E-LSA and S-LSA...
Forum: Electrical Systems 01-07-2021, 04:35 PM
Replies: 7
Views: 708
Posted By Mich48041
Do NOT connect 12 volts. The pitch trim...

Do NOT connect 12 volts. The pitch trim controller is a 5 volt system.
The Ray Allen G405 stick grip grounds the RED (Down) and GREEN (Up)
wires when the switches are pressed. Measure the voltage...
Forum: RV-12/RV-12iS 01-01-2021, 08:35 PM
Replies: 13
Views: 2,106
Posted By Mich48041
According to my notes, 3.2 volts on Dynon D-180...

According to my notes, 3.2 volts on Dynon D-180 EMS Pin 6 = 30psi.
Disconnect the wht/yel wire from the oil pressure sender and connect it to
3.2 volts positive (two flashlight batteries in series). ...
Forum: RV-12/RV-12iS 01-01-2021, 05:22 PM
Replies: 7
Views: 919
Posted By Mich48041
Check the pivot points at the forward end of the...

Check the pivot points at the forward end of the canopy.
Are they too loose?
Forum: Electrical Systems 12-27-2020, 06:23 PM
Replies: 44
Views: 5,111
Posted By Mich48041
You can use either one. I prefer fuses because...

You can use either one. I prefer fuses because they are the weak link in the
circuit and will not fail to open when overloaded. Circuit breakers are mechanical
devices that can fail. I had a...
Forum: Electrical Systems 12-27-2020, 07:02 AM
Replies: 2
Views: 498
Posted By Mich48041
Unlike lead acid batteries, Lithium batteries...

Unlike lead acid batteries, Lithium batteries will accept whatever charging
current that your alternator can put out. If the battery is discharged, then
the charging current will probably be too...
Forum: Electrical Systems 12-26-2020, 05:36 PM
Replies: 44
Views: 5,111
Posted By Mich48041
You need one ANL (or other brand) fuse located at...

You need one ANL (or other brand) fuse located at the starter contactor.
This fuse should NOT carry starter current, only current from the alternator.
The fuse should be big enough so that it will...
Forum: Electrical Systems 12-18-2020, 08:25 PM
Replies: 9
Views: 769
Posted By Mich48041
The rule of thumb is to ground a shield at only...

The rule of thumb is to ground a shield at only one end. However,
manufacturers instructions take precedence over rules of thumb.
They have done testing and know the best way to wire their products.
Forum: RV-12/RV-12iS 12-14-2020, 01:16 PM
Replies: 4
Views: 1,000
Posted By Mich48041
Looking at the schematic, it seems that the...

Looking at the schematic, it seems that the engine must be running in order
for the 30 amp fuse to glow. As far as I know, all RV-12s kits have the "Lit"
type fuses. Mine does. Try connecting...
Forum: RV-12/RV-12iS 12-11-2020, 08:34 PM
Replies: 4
Views: 869
Posted By Mich48041
Van's sells them. Give them a call.

Van's sells them. Give them a call.
Forum: RV-12/RV-12iS 12-08-2020, 03:02 PM
Replies: 11
Views: 2,267
Posted By Mich48041
If it is not broke, don't fix it.

If it is not broke, don't fix it.
Forum: RV-12/RV-12iS 12-07-2020, 05:22 PM
Replies: 6
Views: 3,575
Posted By Mich48041
Yes, Walter Tondu does. You can download it from...

Yes, Walter Tondu does. You can download it from HERE (http://rv7-a.com/n447rv_documents.htm).
His user name is "walter'. Here is the weight & balance THREAD...
Forum: RV-12/RV-12iS 12-06-2020, 08:07 PM
Replies: 37
Views: 4,838
Posted By Mich48041
You are correct that most of the RV-12 is wired...

You are correct that most of the RV-12 is wired with Van's wire harnesses.
But Dynon components must be wired per Dynon manuals, especially the Dynon network.
Forum: RV-12/RV-12iS 12-06-2020, 06:41 PM
Replies: 37
Views: 4,838
Posted By Mich48041
Open circuits are much more common than shorted...

Open circuits are much more common than shorted circuits. But in either case,
substituting another cable will tell you if the existing cable is good or bad.
You can buy one from DYNON...
Forum: Electrical Systems 12-06-2020, 03:58 PM
Replies: 17
Views: 2,052
Posted By Mich48041
Be aware that if completely discharged, EarthX...

Be aware that if completely discharged, EarthX batteries need to be large
enough to accept the full output of the alternator. And an alternator needs
proper cooling if operated at maximum capacity...
Showing results 1 to 64 of 500

 
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