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Search: Posts Made By: Lenny Iszak
Forum: Electrical Systems 02-24-2021, 03:32 PM
Replies: 4
Views: 216
Posted By Lenny Iszak
Marvin has a cool product that does exactly what...

Marvin has a cool product that does exactly what you need.

https://www.smoke-system-helper.com/complete-kits/Smart-Button-p105223637
Forum: RV General Discussion/News 01-09-2021, 02:48 PM
Replies: 15
Views: 2,228
Posted By Lenny Iszak
:) I know the feeling. Just spend the money on a...

:) I know the feeling. Just spend the money on a Best Tugs A3, you won't regret it. Better maneuverability than any other tug I've tried, except maybe the A5. It has plenty of power and endurance...
Forum: Tools 12-31-2020, 07:20 PM
Replies: 20
Views: 1,331
Posted By Lenny Iszak
A friend built his RV-7 in an apartment with a...

A friend built his RV-7 in an apartment with a scuba tank and a first stage regulator. Canít get any quieter than that. :)
Canít use it for air tools but it lasts a long time for just riveting.
He...
Forum: Glass Cockpit 12-27-2020, 04:37 PM
Replies: 18
Views: 1,637
Posted By Lenny Iszak
I have a few hours on the original Aerovonics...

I have a few hours on the original Aerovonics version of the AV-30. It works great. Aerovonics was founded by one of the guys who started Aspen Avionics, and it shows in the quality of this unit....
Forum: RV Ongoing Maintenance Issues 12-27-2020, 03:28 PM
Replies: 63
Views: 7,476
Posted By Lenny Iszak
How low are you going to set it? At 13.6V the...

How low are you going to set it?

At 13.6V the alternator is still cranking out over 60A when the battery is "hungry". The PlanePower does, not sure about the B&C, but likely very similar. At that...
Forum: RV Ongoing Maintenance Issues 12-27-2020, 01:15 PM
Replies: 63
Views: 7,476
Posted By Lenny Iszak
Mine was an ETX1200 charged by a PlanePower 60A...

Mine was an ETX1200 charged by a PlanePower 60A and a PlanePower standby.
After engine start the main alternator would be charging at 60A+ (I've seen up to 65A out of this alternator), bus voltage...
Forum: RV Ongoing Maintenance Issues 12-22-2020, 03:19 PM
Replies: 63
Views: 7,476
Posted By Lenny Iszak
I forgot to mention one important point. The...

I forgot to mention one important point. The battery never actually failed. It cranked the engine just fine. It was just puffed up, cracked, and a terminal was loose, cause it was no longer being...
Forum: RV Ongoing Maintenance Issues 12-22-2020, 02:23 PM
Replies: 63
Views: 7,476
Posted By Lenny Iszak
Unfortunately I was never able to find out,...

Unfortunately I was never able to find out, that's why I switched back to lead. My airplane is electrically dependent, and couldn't afford that uncertainty with my risk budget.

Just like the OP, I...
Forum: RV Ongoing Maintenance Issues 12-22-2020, 06:00 AM
Replies: 63
Views: 7,476
Posted By Lenny Iszak
My ETX1200 was in the tailcone of my RV-10....

My ETX1200 was in the tailcone of my RV-10. Puffed up and cracked itself in half. It was 3 years old.
Back to hauling lead again...

Lenny
Forum: Alternative Engines 12-13-2020, 06:52 PM
Replies: 81
Views: 6,559
Posted By Lenny Iszak
It's going to be a while until we get to travel...

It's going to be a while until we get to travel in electric planes mostly because of charging infrastructure, but having a fun plane to do some aerobatics in is not that far off. Acro planes don't...
Forum: RV General Discussion/News 12-09-2020, 07:26 PM
Replies: 16
Views: 1,162
Posted By Lenny Iszak
It's not only roll. I'll try to explain. In...

It's not only roll. I'll try to explain.
In static conditions the ball will go out to whichever side is lower. Think of a real slip ball, or a regular bubble level. Yaw or (uncoordinated flight) will...
Forum: RV General Discussion/News 12-09-2020, 06:12 PM
Replies: 16
Views: 1,162
Posted By Lenny Iszak
Put an electronic level across the fuselage and...

Put an electronic level across the fuselage and let some air out of one of the main tires to level the airplane side to side. The ball should be in the middle. If it isn't shim your ADAHRS unit until...
Forum: RV General Discussion/News 12-07-2020, 03:20 PM
Replies: 8
Views: 889
Posted By Lenny Iszak
You can search Google like...

You can search Google like this:

site:vansairforce.com intitle:"fuel sender" intext:"model specific > rv-10"

"intitle:" is to search thread titles only

The quotes around the keyword specify that...
Forum: Propellers 12-06-2020, 09:24 PM
Replies: 12
Views: 1,789
Posted By Lenny Iszak
Thanks Paul! I did read the Kitplanes article....

Thanks Paul! I did read the Kitplanes article. Was just hoping that someone had a similarly thorough analysis for the RV-10 setup.

Lenny
Forum: Propellers 12-06-2020, 10:05 AM
Replies: 12
Views: 1,789
Posted By Lenny Iszak
The MT prop is slower than the 2-blade aluminum...

The MT prop is slower than the 2-blade aluminum Hartzell.
In the other thread the Whirlwind engineer said the 300 has no speed penalty.
Would you be able to give us some numbers (power settings and...
Forum: Photography 12-01-2020, 08:11 AM
Replies: 6
Views: 1,538
Posted By Lenny Iszak
Bill, A bunch of us are using PlaneAround...

Bill,

A bunch of us are using PlaneAround wingtip and tiedown mounts. It's real solid machined aluminum stuff. Less likely to lose your Gopro with that.

The other day I had a Gopro 360 MAX (much...
Forum: RV Ongoing Maintenance Issues 11-24-2020, 08:17 PM
Replies: 5
Views: 718
Posted By Lenny Iszak
Lantana

Hugo Terrosa in Lantana (561) 358-3964
A&P and -10 builder.
Forum: Electronic Ignition Systems 11-17-2020, 02:38 PM
Replies: 6
Views: 1,000
Posted By Lenny Iszak
SureFly p-lead output

Here's what the output of the Surefly looks like. See attached oscilloscope photo.

It has a +10V DC offset on it (0V is at the 1 mark on the left). This is a 6Cyl unit at a low RPM.

Much different...
Forum: Electrical Systems 11-16-2020, 01:20 PM
Replies: 43
Views: 5,882
Posted By Lenny Iszak
It is 60 continuous duty on the bench. According...

It is 60 continuous duty on the bench. According to the Hartzell chart that came with my alternator it makes more than 60A on the bench.

The rectifier diodes generate their own heat depending on the...
Forum: Electronic Ignition Systems 11-13-2020, 03:16 PM
Replies: 15
Views: 2,288
Posted By Lenny Iszak
I run Lightspeed & Surefly. Same experience as...

I run Lightspeed & Surefly. Same experience as Ivan. The Surefly doesn't run as smooth as the Lightspeed on runup. Tried it both in fixed or advanced mode.

The advance curve seems to be a bit...
Forum: Electrical Systems 11-13-2020, 01:31 PM
Replies: 43
Views: 5,882
Posted By Lenny Iszak
I used to see 60+ amps out of the alternator...

I used to see 60+ amps out of the alternator after startup for a few seconds.
I ended up getting a 30amp vacuum pad mounted standby alternator. After starting with the lithium battery it would...
Forum: Electrical Systems 11-13-2020, 12:57 PM
Replies: 43
Views: 5,882
Posted By Lenny Iszak
The rectifier bridge is inside the alternator...

The rectifier bridge is inside the alternator (and exposed to heat) on both B&C and PlanePower alternators. It likely has the same probability of failing on both. I attribute the bridge failure to my...
Forum: Engine Monitors 10-24-2020, 08:50 AM
Replies: 3
Views: 489
Posted By Lenny Iszak
The magneto p-lead can be grounded by either the...

The magneto p-lead can be grounded by either the ignition toggle switch or the RPM module.
The isolator is likely just a resistor. Even if you ground the p-lead through that resistor there's no...
Forum: Engine Monitors 10-23-2020, 11:04 PM
Replies: 3
Views: 489
Posted By Lenny Iszak
Yes, that looks correct. Nothing weird will...

Yes, that looks correct.
Nothing weird will happen. The toggle switch will ground both the mag and the RPM module's input.
The isolator is there to protect the mag from being grounded by the RPM...
Forum: RV-7/7A 10-17-2020, 09:46 AM
Replies: 15
Views: 2,487
Posted By Lenny Iszak
Saddle washers

I used these saddle washers from Pegasus Racing:

https://www.pegasusautoracing.com/productselection.asp?Product=3077-002

3077-002-0750 Saddle Washer for 3/4" Diameter Tubing, #10 Bolt

Lenny
Forum: Autopilots 10-10-2020, 12:51 AM
Replies: 2
Views: 696
Posted By Lenny Iszak
See this...

See this thread:


https://vansairforce.net/community/showthread.php?t=159034
Forum: Electrical Systems 09-19-2020, 09:37 AM
Replies: 20
Views: 3,053
Posted By Lenny Iszak
You would definitely see a voltage fluctuation...

You would definitely see a voltage fluctuation with the current going up and down like that so it's likely an indication error.

Probably a bad hall effect sensor, or voltage induced into the hall...
Forum: Electronic Ignition Systems 08-30-2020, 02:19 PM
Replies: 218
Views: 45,221
Posted By Lenny Iszak
I'm not buying that. :) First, if I didn't want...

I'm not buying that. :)

First, if I didn't want people messing with the settings I'd just disable the DIP switches in software and wouldn't just warn them not to mess with it or their engine will...
Forum: Electronic Ignition Systems 08-30-2020, 12:49 PM
Replies: 218
Views: 45,221
Posted By Lenny Iszak
Nope. They pulled it a while ago. It was a...

Nope. They pulled it a while ago. It was a confusing chart but at least it was something.

OSH2019 Lycoming announced that they will be white labeling the SureFly ignition, changed colors :) and...
Forum: Electronic Ignition Systems 08-30-2020, 11:02 AM
Replies: 218
Views: 45,221
Posted By Lenny Iszak
What about this one?

What about this one?
Forum: RV-10 08-17-2020, 06:39 PM
Replies: 7
Views: 1,378
Posted By Lenny Iszak
I have Matco main wheels and using the straight...

I have Matco main wheels and using the straight stem tubes:

Michelin Airstop : 097-500-0 (TR-20 / Straight)

Lenny
Forum: Safety 08-14-2020, 07:49 PM
Replies: 29
Views: 4,855
Posted By Lenny Iszak
If they knew how much those were worth they would...

If they knew how much those were worth they would have taken them out and sold them :D
Forum: Electrical Systems 08-13-2020, 06:49 PM
Replies: 36
Views: 5,434
Posted By Lenny Iszak
I think it would be fine in a pinch. These...

I think it would be fine in a pinch.

These regulators have a "failsafe" feature that monitors the B lead, so if the field gets disconnected they will keep going, so you really have no way of...
Forum: Electrical Systems 08-13-2020, 10:38 AM
Replies: 36
Views: 5,434
Posted By Lenny Iszak
Dan, I looked at the data sheets of various...

Dan,

I looked at the data sheets of various alternator control chips, aka voltage regulators. Lots of bells and whistles in a lot of them (like load response control, soft start, thermal...
Forum: RV-12/RV-12iS 08-11-2020, 02:48 PM
Replies: 35
Views: 7,491
Posted By Lenny Iszak
Terry is right! Forget lawyers and killing trees...

Terry is right! Forget lawyers and killing trees and stressing yourself out over this. Talk to the neighbor and come up with a solution you're both ok with.
That guy can't let the kids out to play...
Forum: Electrical Systems 08-11-2020, 09:57 AM
Replies: 6
Views: 748
Posted By Lenny Iszak
A dead rectifier diode in the alternator will do...

A dead rectifier diode in the alternator will do that. Load up the alternator as much as you can. One with a bad diode can't make full rated current. The max is more like 45A instead of 60+.

Another...
Forum: Electrical Systems 08-10-2020, 11:47 AM
Replies: 36
Views: 5,434
Posted By Lenny Iszak
Steve, The back cover is held on by 3 screws all...

Steve,

The back cover is held on by 3 screws all pointing aft. On the RV-10 there's plenty of room to remove it, not sure about the 4 cylinder engines.
Replacing the regulator/brush assembly is...
Forum: Electrical Systems 08-09-2020, 12:46 PM
Replies: 36
Views: 5,434
Posted By Lenny Iszak
Larry, That's under no load. Once you start...

Larry,

That's under no load. Once you start applying some load it voltage drop increases to .4V+ on a Schottky. It can go up to 1.1V on a rectifier bridge.

See Figure 1. for the IXYS Schottky...
Forum: Electrical Systems 08-09-2020, 12:14 PM
Replies: 36
Views: 5,434
Posted By Lenny Iszak
The regulator sold by Spruce is the same thing as...

The regulator sold by Spruce is the same thing as the original. It's also a Hartzell part number. I replaced mine with one from Spruce. Looks exactly the same with the wire included. They give you...
Forum: Electrical Systems 08-09-2020, 12:09 PM
Replies: 36
Views: 5,434
Posted By Lenny Iszak
Todd, Yes, it's normal. Your efis is likely fed...

Todd,

Yes, it's normal. Your efis is likely fed through the ebus diode, which creates a voltage drop. Once you turn on your ebus switch it sees bus voltage.

You can improve the voltage drop by...
Forum: Electrical Systems 08-08-2020, 08:22 AM
Replies: 36
Views: 5,434
Posted By Lenny Iszak
AircarftSpruce sells the regulator: 11-1043...

AircarftSpruce sells the regulator:

11-1043 HARTZELL PLANE-POWER REGULATOR BRUSH ASSY

A compatible rectifier block is INR724.

I keep one of each in my toolbag, they are easy to swap.

Lenny
Forum: RV-10 08-05-2020, 06:50 PM
Replies: 7
Views: 1,378
Posted By Lenny Iszak
Desser or the real deal Goodyear FlightCustom...

Desser or the real deal Goodyear FlightCustom III, 15/6.00-6

Lenny
Forum: Electrical Systems 08-01-2020, 01:50 PM
Replies: 15
Views: 3,567
Posted By Lenny Iszak
It's unlikely that the Plane Power alternator...

It's unlikely that the Plane Power alternator puts out 90A. When it does put out around 60A, the bus voltage will sag close to 13.6V. That's how you know the alternator can't keep up with the...
Forum: RV-10 07-28-2020, 09:08 PM
Replies: 31
Views: 7,469
Posted By Lenny Iszak
Use a shorter grip

Clive in New Zealand http://www.compositesinternational.co.nz/gallery/ sells a shorter stick grip that doesnít require bending the stick to clear the panel. Itís ambidextrous and uses an Otto trim...
Forum: RV-12/RV-12iS 07-10-2020, 02:03 PM
Replies: 10
Views: 2,193
Posted By Lenny Iszak
I'm using the 75 durometer orings, being in FL,...

I'm using the 75 durometer orings, being in FL, I'm not concerned about the 0F rating.
The stiffer oring could make the caliper piston bind and not return as easily. I'd stick with the same or at...
Forum: RV-12/RV-12iS 07-10-2020, 12:01 PM
Replies: 10
Views: 2,193
Posted By Lenny Iszak
mcmaster carr

You can find viton orings at Mcmaster.com. Same "dash number" as the Matco parts diagrams show, just made out of viton.

I've been using them in my RV-10 brake calipers along with Royco 782 brake...
Forum: RV-6/6A 07-09-2020, 11:39 AM
Replies: 18
Views: 5,214
Posted By Lenny Iszak
CFD

I was thinking CFD analysis for speed mods. Most of it should translate to the other RVs too.
There's great detail in the FWF model, maybe that could be analyzed/optimized without all the usual trial...
Forum: RV-6/6A 06-30-2020, 04:01 PM
Replies: 18
Views: 5,214
Posted By Lenny Iszak
Considering the amount of work that went into it...

Considering the amount of work that went into it it's not all that expensive.

Lenny
Forum: RV-10 06-25-2020, 09:55 AM
Replies: 4
Views: 1,195
Posted By Lenny Iszak
flight test

Far from SoCal but I have an RV-10 instrumented with an accurate data logging system (air data boom + OnSpeed), and can run some drag polars for you, comparing with the stock Hartzell BA prop. Sent...
Forum: RV General Discussion/News 06-06-2020, 11:15 AM
Replies: 25
Views: 2,615
Posted By Lenny Iszak
Woahh. That's a bad idea! You're crimping against...

Woahh. That's a bad idea! You're crimping against the soft insulation. Yeah it will stabilize it, but then eventually it will get loose.

Put a heatshrink on it instead. That will get you the same...
Forum: RV General Discussion/News 06-05-2020, 04:59 PM
Replies: 25
Views: 2,615
Posted By Lenny Iszak
Val, I'm at 64FA, once this rain stops I can hop...

Val,

I'm at 64FA, once this rain stops I can hop on over and check it out for you.

Lenny
Forum: RV-10 05-17-2020, 09:24 PM
Replies: 60
Views: 8,121
Posted By Lenny Iszak
fuel servo

Which fuel injection servo are you guys using on the planes that had a pressure sensor failure?
Something weird is happening on this RV-7 with an Avstar injection servo. After shutdown with the...
Forum: RV-10 05-06-2020, 12:28 PM
Replies: 60
Views: 8,121
Posted By Lenny Iszak
more Kavliko failures

My buddy's AFS equipped RV-7 had the same thing happen a couple of years ago. The Kavliko fuel pressure sensor broke and was dripping fuel out of the connector.

Here's a video he sent me then:...
Forum: RV-10 05-03-2020, 11:03 AM
Replies: 14
Views: 2,054
Posted By Lenny Iszak
Something is wrong there. Heavier engine/prop,...

Something is wrong there. Heavier engine/prop, misrigged elevators, wrong horizontal stabilizer spacers. Maybe post some weight and balance numbers and we'll know if it's a CG or a rigging issue.
You...
Forum: Glass Cockpit 02-22-2020, 11:41 PM
Replies: 41
AOA
Views: 9,055
Posted By Lenny Iszak
Carlos, You don't need to have full travel of...

Carlos,

You don't need to have full travel of the flap position sensor (potentiometer). It's actually better to leave a little play on both ends.

The values you mentioned will work with the OnSpeed...
Forum: RV General Discussion/News 02-06-2020, 04:53 PM
Replies: 10
Views: 1,412
Posted By Lenny Iszak
Larry, It doesn't matter what power setting or...

Larry,

It doesn't matter what power setting or descent rate you use. What matters is that you are on a stabilized airspeed with wings level. The airspeed indicator is smoothed for readability and...
Forum: RV General Discussion/News 01-23-2020, 04:37 PM
Replies: 21
Views: 2,668
Posted By Lenny Iszak
I am too. Vac's RV-4 is currently instrumented...

I am too. Vac's RV-4 is currently instrumented with a test boom, D10 Efis and our sensors (2 differential pressures, static pressure and a 9DOF IMU), all logged simultaneously and timestamped. So...
Forum: RV General Discussion/News 01-23-2020, 02:05 PM
Replies: 21
Views: 2,668
Posted By Lenny Iszak
AOA and IAS damping

I just checked one of our Onspeed 50hz data logs where our sensor data is fused together with G3x Efis data. G3x airspeed lags about 2 seconds behind undamped dynamic pressure. I've also seen one...
Forum: Glass Cockpit 08-26-2019, 02:57 AM
Replies: 21
Views: 6,482
Posted By Lenny Iszak
I have a Salae Logic and a G5. I?ll hook it up...

I have a Salae Logic and a G5. I?ll hook it up and see what type of data is coming through. I?d love to get baro into the G5 directly from the Efis. It would be best though to check the comm between...
Forum: RV Ongoing Maintenance Issues 08-17-2019, 10:35 AM
Replies: 25
Views: 5,962
Posted By Lenny Iszak
Getting away from the thread drift, here's a list...

Getting away from the thread drift, here's a list of actionable items for you.

It does look like the aluminum tubing cracked and the brake fluid caught on fire. Shimmying gear legs (the reason...
Forum: RV General Discussion/News 08-07-2019, 04:07 PM
Replies: 23
Views: 3,170
Posted By Lenny Iszak
I killed a number of them already (Bosch LSU...

I killed a number of them already (Bosch LSU 4.9). They start lagging when they get lead fouled but they are still accurate. After a while they take minutes to respond. When they are new the response...
Forum: RV Ongoing Maintenance Issues 08-02-2019, 10:55 PM
Replies: 57
Views: 12,166
Posted By Lenny Iszak
brake caliper temps

I'm seeing 130-150F during normal landings with careful use of the brakes.

After a fairly long taxi at OSH last week I saw 240F caliper temps just before shutdown. The original nitrile o-rings are...
Forum: RV Ongoing Maintenance Issues 08-02-2019, 04:33 PM
Replies: 57
Views: 12,166
Posted By Lenny Iszak
Yes, type-K ring thermocouples under one of the 4...

Yes, type-K ring thermocouples under one of the 4 caliper bolts.
The AFS Efis has two additional thermocouple inputs for turbo inlet temperatures that show up on the screen when you select a turbo...
Forum: RV Ongoing Maintenance Issues 08-02-2019, 03:04 PM
Replies: 57
Views: 12,166
Posted By Lenny Iszak
Forget the insurance company. Not worth having a...

Forget the insurance company. Not worth having a claim on your record for this repair.
Take detailed pictures and talk to the wheel/brake manufacturer to see what's salvageable. Hopefully you can...
Showing results 1 to 64 of 269

 
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