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Search: Posts Made By: Lenny Iszak
Forum: VAF Classifieds (posts in here deleted after 30 days) 05-10-2021, 04:37 PM
Replies: 2
Views: 355
Posted By Lenny Iszak
I have an AV-30-E for sale :)

I have an AV-30-E for sale :)
Forum: Fuel Injection Systems 05-08-2021, 09:05 AM
Replies: 11
Views: 522
Posted By Lenny Iszak
injector body

It used to be that all were the same, but recently I saw an Avstar system that came with pressed in restrictors. See attached photos. Don knew and sent the injector body with the restrictors.

Lenny
Forum: Fuel Injection Systems 05-08-2021, 08:41 AM
Replies: 11
Views: 522
Posted By Lenny Iszak
torque values

Here's the page from the SilverHawk servo manual and the Lycoming Service table of limits
Forum: RV Ongoing Maintenance Issues 04-07-2021, 06:11 PM
Replies: 11
Views: 1,139
Posted By Lenny Iszak
Lots of good info here from Timken, page...

Lots of good info here from Timken, page 77:

http://www.timken.com/pdf/10424_Engineering%20and%20Lubrication%20Manual.pdf
Forum: RV Friends Who Have Passed On 04-05-2021, 11:26 AM
Replies: 62
Views: 13,950
Posted By Lenny Iszak
Vac has a good video about stalls in the base to...

Vac has a good video about stalls in the base to final turn, going all the way into the spin, with excellent explanation on what's happening, and also accompanied by AOA...
Forum: Glass Cockpit 04-05-2021, 11:06 AM
Replies: 136
Views: 31,222
Posted By Lenny Iszak
Mickey, We haven't heard from GRT yet. Our...

Mickey,

We haven't heard from GRT yet. Our OnSpeed box won't be relying on Efis data anymore. We have our own internal IMU and sensor fusion algorithm to calculate an attitude solution, which we...
Forum: Glass Cockpit 04-04-2021, 08:05 PM
Replies: 136
Views: 31,222
Posted By Lenny Iszak
Good luck with your back surgery Carlos! If...

Good luck with your back surgery Carlos! If you're coming to OSH, I'd be happy to take you for a ride in my RV-10 and show you both Onspeed and Vern's display. Well, Vern's original M5 display for...
Forum: RV-6/6A 03-27-2021, 09:35 PM
Replies: 12
Views: 941
Posted By Lenny Iszak
Get the echoMUX cable for the Echo and wire it to...

Get the echoMUX cable for the Echo and wire it to get baro data and squawk code directly from the transponder. That should fix the problem.

https://uavionix.com/product/echomux/

Lenny
Forum: Electrical Systems 02-24-2021, 02:32 PM
Replies: 4
Views: 446
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, 01:48 PM
Replies: 15
Views: 2,741
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, 06:20 PM
Replies: 20
Views: 2,112
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, 03:37 PM
Replies: 18
Views: 2,093
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, 02:28 PM
Replies: 63
Views: 9,391
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, 12:15 PM
Replies: 63
Views: 9,391
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, 02:19 PM
Replies: 63
Views: 9,391
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, 01:23 PM
Replies: 63
Views: 9,391
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, 05:00 AM
Replies: 63
Views: 9,391
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, 05:52 PM
Replies: 81
Views: 7,978
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, 06:26 PM
Replies: 16
Views: 1,457
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, 05:12 PM
Replies: 16
Views: 1,457
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, 02:20 PM
Replies: 8
Views: 1,253
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, 08:24 PM
Replies: 12
Views: 2,104
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, 09:05 AM
Replies: 12
Views: 2,104
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, 07:11 AM
Replies: 6
Views: 3,098
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, 07:17 PM
Replies: 5
Views: 880
Posted By Lenny Iszak
Lantana

Hugo Terrosa in Lantana (561) 358-3964
A&P and -10 builder.
Forum: Electronic Ignition Systems 11-17-2020, 01:38 PM
Replies: 6
Views: 1,190
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, 12:20 PM
Replies: 43
Views: 7,280
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, 02:16 PM
Replies: 15
Views: 2,677
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, 12:31 PM
Replies: 43
Views: 7,280
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, 11:57 AM
Replies: 43
Views: 7,280
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, 07:50 AM
Replies: 3
Views: 662
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, 10:04 PM
Replies: 3
Views: 662
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, 08:46 AM
Replies: 15
Views: 3,001
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 10-09-2020, 11:51 PM
Replies: 2
Views: 826
Posted By Lenny Iszak
See this...

See this thread:


https://vansairforce.net/community/showthread.php?t=159034
Forum: Electrical Systems 09-19-2020, 08:37 AM
Replies: 20
Views: 3,657
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, 01:19 PM
Replies: 220
Views: 55,048
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, 11:49 AM
Replies: 220
Views: 55,048
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, 10:02 AM
Replies: 220
Views: 55,048
Posted By Lenny Iszak
What about this one?

What about this one?
Forum: RV-10 08-17-2020, 05:39 PM
Replies: 7
Views: 1,559
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, 06:49 PM
Replies: 29
Views: 5,601
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, 05:49 PM
Replies: 47
Views: 8,306
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, 09:38 AM
Replies: 47
Views: 8,306
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, 01:48 PM
Replies: 35
Views: 8,440
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, 08:57 AM
Replies: 6
Views: 896
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, 10:47 AM
Replies: 47
Views: 8,306
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, 11:46 AM
Replies: 47
Views: 8,306
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, 11:14 AM
Replies: 47
Views: 8,306
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, 11:09 AM
Replies: 47
Views: 8,306
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, 07:22 AM
Replies: 47
Views: 8,306
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, 05:50 PM
Replies: 7
Views: 1,559
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, 12:50 PM
Replies: 15
Views: 4,069
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, 08:08 PM
Replies: 31
Views: 8,306
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, 01:03 PM
Replies: 10
Views: 2,441
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, 11:01 AM
Replies: 10
Views: 2,441
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, 10:39 AM
Replies: 18
Views: 5,884
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, 03:01 PM
Replies: 18
Views: 5,884
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, 08:55 AM
Replies: 4
Views: 1,273
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, 10:15 AM
Replies: 25
Views: 2,763
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, 03:59 PM
Replies: 25
Views: 2,763
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, 08:24 PM
Replies: 60
Views: 8,613
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, 11:28 AM
Replies: 60
Views: 8,613
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, 10:03 AM
Replies: 14
Views: 2,211
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, 10:41 PM
Replies: 41
AOA
Views: 9,948
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, 03:53 PM
Replies: 10
Views: 1,569
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...
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