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Search: Posts Made By: rocketbob
Forum: RV General Discussion/News Today, 04:08 PM
Replies: 13
Views: 268
Posted By rocketbob
You would be better off to remove the TailBeacon...

You would be better off to remove the TailBeacon and install an echoUAT and an aft strobe/position light.
Forum: RV Ongoing Maintenance Issues Yesterday, 06:36 PM
Replies: 8
Views: 184
Posted By rocketbob
Mid Continent MD222-406

Mid Continent MD222-406
Forum: Autopilots 09-20-2022, 09:55 AM
Replies: 9
Views: 654
Posted By rocketbob
Find a machinist that can fabricate a new block. ...

Find a machinist that can fabricate a new block. Can be made out of aluminum. There's hose barbs on the back side with tubing that connects to the pressure sensors.
Forum: Traditional Aircraft Engines 09-16-2022, 06:13 PM
Replies: 10
Views: 1,411
Posted By rocketbob
Intake valve is not rotating. Need to drop the...

Intake valve is not rotating. Need to drop the valve, clean the guide, clean the stem, and lap the valve. Springs and keepers likely have excessive deposits on them. Some exhaust flows thru the...
Forum: RV-10 09-16-2022, 05:55 AM
Replies: 6
Views: 838
Posted By rocketbob
No its rust. Very common to see even if the...

No its rust. Very common to see even if the airplane sits a few weeks. Fly it and forget about it.
Forum: Traditional Aircraft Engines 09-11-2022, 07:33 PM
Replies: 79
Views: 7,494
Posted By rocketbob
172's with the H2AD engine have a drip tray for...

172's with the H2AD engine have a drip tray for the oil filter and one could fabricate something similar to eliminate the mess.

Shown in the diagram...
Forum: Glass Cockpit 09-08-2022, 05:09 PM
Replies: 15
Views: 2,043
Posted By rocketbob
Val Nav 2000 and the Val INS-429 are both also...

Val Nav 2000 and the Val INS-429 are both also SL30 compatible.
Forum: Canada 09-07-2022, 09:22 PM
Replies: 3
Views: 408
Posted By rocketbob
Our old friend Jim Winings used to put 12" of...

Our old friend Jim Winings used to put 12" of crown on all 19 of the runways he built. Watched him do it. He would set up a reference and as he graded he would get off the tractor and stand in the...
Forum: Traditional Aircraft Engines 08-15-2022, 09:34 AM
Replies: 30
Views: 2,215
Posted By rocketbob
I've lapped more valves than I can count. At...

I've lapped more valves than I can count. At least 10 in the past year. Never have had any issue as I usually have owners do full power runs down the runway before rechecking compressions and...
Forum: Autopilots 07-01-2022, 10:24 PM
Replies: 12
Views: 1,299
Posted By rocketbob
I have a brand new in the box Trio Pro Pilot for...

I have a brand new in the box Trio Pro Pilot for a RV-6 purchased 6 mo ago that I would like to sell for the wife of a friend who recently passed away in a terrible accident. Email me if interested...
Forum: RV Building Tips/Techniques 06-21-2022, 06:15 PM
Replies: 35
Views: 3,288
Posted By rocketbob
https://vansairforce.net/community/showthread.php?...

https://vansairforce.net/community/showthread.php?t=74890

If the hinges are already riveted, you can drill out/cut a short piece of hinge on the bottom of the wing, offset a few thousandths and...
Forum: RV-14 06-15-2022, 07:34 AM
Replies: 36
Views: 5,356
Posted By rocketbob
Carbon is a combustion byproduct. Carbon...

Carbon is a combustion byproduct. Carbon particles circulate in the oil and stick to hot parts in the engine. Changing oil on condition rather than time, running LOP on injected motors, proper...
Forum: RV-14 06-13-2022, 01:19 PM
Replies: 36
Views: 5,356
Posted By rocketbob
I fix sticky/stuck valves all the time. Four in...

I fix sticky/stuck valves all the time. Four in the last two weeks.

A few general observations.

1. Reamer is not a good tool for the job as the guides wear oblong in opposing directions at each...
Forum: Traditional Aircraft Engines 05-26-2022, 02:54 PM
Replies: 33
Views: 3,717
Posted By rocketbob
I change a lotta plugs on a lotta airplanes and I...

I change a lotta plugs on a lotta airplanes and I don't use anything on the threads. They spin right out clean as they were installed. Will never use antiseize again. Doesnt do anything but gum up...
Forum: Electronic Ignition Systems 05-23-2022, 07:49 AM
Replies: 5
Views: 672
Posted By rocketbob
Suggest Denso 5003 M22 plugs and G3i harness. ...

Suggest Denso 5003 M22 plugs and G3i harness. Make sure you use red loctite on the end threads and not get any loctite on the shoulder for good contact. I just ordered a replacement fine wire plug...
Forum: Fuel Injection Systems 05-16-2022, 05:09 PM
Replies: 12
Views: 1,553
Posted By rocketbob
My guess is you have a problem with the...

My guess is you have a problem with the diaphragm, given the setup was working for years. I would take the regulator apart and overhaul it.

Lots of good info...
Forum: Traditional Aircraft Engines 05-13-2022, 08:27 AM
Replies: 8
Views: 1,127
Posted By rocketbob
I still have one of these sumps for another...

I still have one of these sumps for another project and have had plans to reinforce the intake with carbon and possibly add a pop off valve.
Forum: RV Ongoing Maintenance Issues 05-05-2022, 08:42 AM
Replies: 10
Views: 3,019
Posted By rocketbob
Looking for the genuine Delco Remy valve for a...

Looking for the genuine Delco Remy valve for a replacement of a valve of unknown origin. I dont see the valves themselves on Allan's website.
Forum: RV Building Tips/Techniques 04-20-2022, 06:29 AM
Replies: 13
Views: 1,424
Posted By rocketbob
Had a similar problem on my F1 wings. No need...

Had a similar problem on my F1 wings. No need for a special tool. I took a hand squeezer with a deep throat and squeezed on every rivet lightly while tweaking the spar along the length.
Forum: Tools 04-11-2022, 04:13 PM
Replies: 24
Views: 3,750
Posted By rocketbob
Any machine shop with a large enough surface...

Any machine shop with a large enough surface grinder could do it in short order.
Forum: Traditional Aircraft Engines 03-19-2022, 06:55 PM
Replies: 22
Views: 1,858
Posted By rocketbob
power steering return hose

https://www.rockauto.com/en/moreinfo.php?pk=78273&jsn=1204
Forum: RV-10 03-16-2022, 12:06 PM
Replies: 35
Views: 5,157
Posted By rocketbob
Very nicely done. Do you find onshape slow at...

Very nicely done. Do you find onshape slow at times?
Forum: Traditional Aircraft Engines 03-12-2022, 09:27 AM
Replies: 109
Views: 9,462
Posted By rocketbob
Smile Agree. Longer wings, more fuel, no fuel stops. ...

Agree. Longer wings, more fuel, no fuel stops. My Comanche has plenty of draggy things on it but it can easily outrun a RV, more so the higher I go, and have 86 usable gallons. I recently flew a...
Forum: ADS-B 03-11-2022, 08:45 AM
Replies: 12
Views: 2,902
Posted By rocketbob
The DC area is ripe with startups doing R&D...

The DC area is ripe with startups doing R&D projects for the Pentagon. My son works for one and just had his system flight tested on a F18. He tells me many startups are working on "vaporware" both...
Forum: Electrical Systems 03-10-2022, 09:58 AM
Replies: 20
Views: 2,155
Posted By rocketbob
If the big wire stays with the starter, a smaller...

If the big wire stays with the starter, a smaller gauge fusible link wire could be used from the alternator, eliminating the fuse.
Forum: Electrical Systems 03-09-2022, 08:04 PM
Replies: 20
Views: 2,155
Posted By rocketbob
I have thought about doing this but if you have...

I have thought about doing this but if you have any sort of fuse or breaker on the B-lead for the alternator that wont work. But it could work if you only had an OV protection scheme on the field...
Forum: Electrical Systems 03-09-2022, 08:27 AM
Replies: 20
Views: 2,155
Posted By rocketbob
A firewall mounted starter contactor is redundant...

A firewall mounted starter contactor is redundant and unecessary. Adds weight and more failure points. There is already one built into the starter. There is a significant improvement in cranking...
Forum: RV Ongoing Maintenance Issues 03-06-2022, 04:57 PM
Replies: 11
Views: 1,494
Posted By rocketbob
Cessna PN 0721105-5

Cessna PN 0721105-5
Forum: Glass Cockpit 03-05-2022, 03:28 PM
Replies: 180
Views: 55,204
Posted By rocketbob
In my experience the Stratux AHRS is not usable. ...

In my experience the Stratux AHRS is not usable. I have spent some time tinkering with a couple of different units with different GPS's and AHRS modules and would not bet my life on one.

The...
Forum: Traditional Aircraft Engines 03-01-2022, 02:42 PM
Replies: 15
Views: 2,282
Posted By rocketbob
I have fixed a number of cylinders with valves...

I have fixed a number of cylinders with valves not rotating both on big bore Continentals and Lycomings by lapping the valve, replacing the rotator cap, and making a few quick passes in the guide...
Forum: RV General Discussion/News 02-12-2022, 09:40 AM
Replies: 52
Views: 8,134
Posted By rocketbob
How would one know this? Most of these cases get...

How would one know this? Most of these cases get settled. Our airport is now dealing with a wrongful death lawsuit due to a terrible accident which was completely and utterly pilot error. Injury...
Forum: RV Building Tips/Techniques 02-11-2022, 02:53 PM
Replies: 20
Views: 1,240
Posted By rocketbob
https://www.amazon.com/gp/product/B07XL53X6M I...

https://www.amazon.com/gp/product/B07XL53X6M

I fabricated new floorboards in my Comanche and covered them with this stuff, no more carpet. You can barely notice the seams. Worked excellent. ...
Forum: RV General Discussion/News 02-11-2022, 07:33 AM
Replies: 17
Views: 2,029
Posted By rocketbob
Numerous times I have dealt with carbs that...

Numerous times I have dealt with carbs that weren't right after overhaul, some requiring multiple trips back. You will have to take the carb back to the shop and have the float level checked. The...
Forum: RV Ongoing Maintenance Issues 02-09-2022, 08:59 AM
Replies: 20
Views: 2,365
Posted By rocketbob
I've found that a drop of machine oil on the stem...

I've found that a drop of machine oil on the stem at every condition inspection keeps the valve operating happily.
Forum: Traditional Aircraft Engines 02-06-2022, 06:33 AM
Replies: 27
Views: 2,949
Posted By rocketbob
Internally the PMag uses an optical encoder ring...

Internally the PMag uses an optical encoder ring with an index pulse. Since they can be timed arbitrarily with as little as one pulse in the normal direction relative to the index pulse, there could...
Forum: Traditional Aircraft Engines 02-03-2022, 03:04 PM
Replies: 27
Views: 9,866
Posted By rocketbob
I suspect what you welded to the exhaust is not...

I suspect what you welded to the exhaust is not facing aft and acting as a venturi.
Forum: RV Ongoing Maintenance Issues 02-02-2022, 03:48 PM
Replies: 7
Views: 1,100
Posted By rocketbob
I have cleaned pistons in a similar concoction...

I have cleaned pistons in a similar concoction with an ultrasonic cleaner and found it worked well. I have a customer that has a great running O-320 that uses a bit of oil and it gets dirty fast. ...
Forum: Traditional Aircraft Engines 02-02-2022, 03:32 PM
Replies: 15
Views: 1,947
Posted By rocketbob
I usually build 2-3 engines a year and my golden...

I usually build 2-3 engines a year and my golden rule is do NOT run the engine hard for breakin. It is the most counterintuitive thing one can do, which is to run hard creating elevated cylinder...
Forum: COMM 01-26-2022, 10:01 AM
Replies: 34
Views: 4,807
Posted By rocketbob
Using an Archer antenna for VOR/GS is overkill...

Using an Archer antenna for VOR/GS is overkill and unnecessarily complicated for the task. A capacitively coupled antenna is not necessary for receiving a signal. A simple homemade bent whip...
Forum: RV Ongoing Maintenance Issues 01-24-2022, 03:27 PM
Replies: 17
Views: 1,982
Posted By rocketbob
No thinning but I do believe the proseal will get...

No thinning but I do believe the proseal will get drawn in slowly if the vacuum is maintained.
Forum: RV Ongoing Maintenance Issues 01-24-2022, 03:26 PM
Replies: 17
Views: 1,982
Posted By rocketbob
https://www.harborfreight.com/25-cfm-vacuum-pump-6...

https://www.harborfreight.com/25-cfm-vacuum-pump-61245.html

Its way, way overkill for this type of work. I do have a refrigerant license and use it for working on hvac systems.
Forum: RV Ongoing Maintenance Issues 01-23-2022, 05:19 PM
Replies: 17
Views: 1,982
Posted By rocketbob
For leaks in tanks this method works well as I...

For leaks in tanks this method works well as I have used it a number of times on certified aircraft. Take a harbor freight vacuum pump and plumb it to a fuel drain. Seal off any openings like the...
Forum: Traditional Aircraft Engines 01-23-2022, 08:15 AM
Replies: 3
Views: 914
Posted By rocketbob
Harness can only go on one way. Look closely at...

Harness can only go on one way. Look closely at uneven screw spacing.
Forum: Traditional Aircraft Engines 01-21-2022, 11:58 AM
Replies: 10
Views: 1,198
Posted By rocketbob
Curious what the part # on this oil cooler is at...

Curious what the part # on this oil cooler is at it is a multi pass (weld across the top middle) with the exit is on the opposite side.
Forum: Propellers 01-21-2022, 08:52 AM
Replies: 90
Views: 19,247
Posted By rocketbob
No reference just had it in my head it was 500...

No reference just had it in my head it was 500 hours. Maybe they bumped it up and it was that to begin with.

I was quoted $2K this week for a blade strip/paint/teflons/reseal for a Hartzell so I...
Forum: Midwest 01-16-2022, 07:38 AM
Replies: 3
Views: 676
Posted By rocketbob
I just did my CFII checkride with Denny and know...

I just did my CFII checkride with Denny and know him well. He is hesitant to do checkrides in experimentals but if you send him some pics of the airplane and panel that could sway him. Texting is...
Forum: Propellers 01-10-2022, 10:06 AM
Replies: 90
Views: 19,247
Posted By rocketbob
I have several sets of orings for Hartzells on...

I have several sets of orings for Hartzells on hand. They are orange silicone orings and sourced from Hartzell. Not the four-lobe orings like you see here. Nitrile orings tend to dry and harden...
Forum: Safety 01-09-2022, 08:22 PM
Replies: 49
Views: 9,989
Posted By rocketbob
Yes. If you run it for a few...

Yes. If you run it for a few hours.

https://www.amazon.com/gp/product/B074MX8VN5/

I have one of these sitting inside the cowling of my Comanche with a moving blanket laying on top.

Just checked...
Forum: Electrical Systems 01-09-2022, 06:53 PM
Replies: 23
Views: 3,653
Posted By rocketbob
And I should clarify: never heard of a RV...

And I should clarify: never heard of a RV breaking a belt that a result of age or natural wear. :)
Forum: Electrical Systems 01-09-2022, 06:48 PM
Replies: 23
Views: 3,653
Posted By rocketbob
What was the cause?

What was the cause?
Forum: Electrical Systems 01-09-2022, 06:13 PM
Replies: 23
Views: 3,653
Posted By rocketbob
I don't know if you're reading much of the...

I don't know if you're reading much of the alternator posts on VAF but I've never seen/heard of anyone breaking a belt and its generally once a week someone posts about issues with a pad-driven...
Forum: Traditional Aircraft Engines 01-08-2022, 07:45 AM
Replies: 48
Views: 67,731
Posted By rocketbob
Larry Vetterman put me onto this setup years ago...

Larry Vetterman put me onto this setup years ago where you remove the troublesome vernatherm and add the oil cooler bypass spring and plunger along with a ball valve controlled with a push-pull...
Forum: Glass Cockpit 01-07-2022, 02:05 PM
Replies: 21
Views: 5,628
Posted By rocketbob
I have a current KLN94 in the airplane for IFR...

I have a current KLN94 in the airplane for IFR and would like to replace the 396 in the panel. The 660 would be a step up in situational awareness but I don't believe it would work with the GXM30...
Forum: Propellers 01-07-2022, 06:20 AM
Replies: 90
Views: 19,247
Posted By rocketbob
So. You grease them and they leak, then they...

So. You grease them and they leak, then they have to go out to get resealed. Then half of them come back having bad races (usually brinnelling) so the grease doesn't help that either. None of this...
Forum: Glass Cockpit 01-06-2022, 02:45 PM
Replies: 21
Views: 5,628
Posted By rocketbob
I've installed a couple of 175's and love that...

I've installed a couple of 175's and love that unit. The 660 seems to have many of the same features. Will it automatically sequence to the missed approach, show holds and entries like the 175?
Forum: Propellers 01-03-2022, 08:09 AM
Replies: 90
Views: 19,247
Posted By rocketbob
It is my opinion, based on my own experience,...

It is my opinion, based on my own experience, that these things are way over maintained which causes more problems than it solves despite the manufacturers recommendations. There is no regulatory...
Forum: Propellers 01-02-2022, 10:14 PM
Replies: 90
Views: 19,247
Posted By rocketbob
I have a paper manual in an original 3-ring...

I have a paper manual in an original 3-ring Hartzell binder that I purchased from Hartzell. Its a little strange for someone to accuse someone of using "pirated" tech data, not knowing anything...
Forum: Propellers 01-02-2022, 06:36 PM
Replies: 90
Views: 19,247
Posted By rocketbob
I've had numerous unused tubes of Aeroshell dry...

I've had numerous unused tubes of Aeroshell dry out and leak oil on the shelf.

A car can go 200K miles typically on a set of wheel bearings never requiring maintenance with a tiny amount of...
Forum: Propellers 01-02-2022, 03:26 PM
Replies: 90
Views: 19,247
Posted By rocketbob
Correct. I would not use Aeroshell #5 on my...

Correct. I would not use Aeroshell #5 on my mower let alone a certified aircraft. It is an old clay grease formulation that does not perform well.

I have a copy of the service manual that is only...
Forum: Propellers 01-02-2022, 10:09 AM
Replies: 90
Views: 19,247
Posted By rocketbob
Yes, dont grease. Its pointless. There's no way...

Yes, dont grease. Its pointless. There's no way to force old grease out without complete disassembly. There is so little movement that none of it really matters. I would be willing to bet a...
Forum: Propellers 01-02-2022, 09:48 AM
Replies: 90
Views: 19,247
Posted By rocketbob
I wont use Aeroshell 5 in my mower let alone an...

I wont use Aeroshell 5 in my mower let alone an airplane. I have dried up old stock tubes tubes that I've thrown in the trash. Greasing Hartzells ever year causes more problems than it prevents. ...
Forum: RV Building Tips/Techniques 12-29-2021, 07:20 PM
Replies: 29
Views: 5,236
Posted By rocketbob
On Piper Comanches explosive rivets were used on...

On Piper Comanches explosive rivets were used on the skins over the stabilator attach brackets. The shop head side is certainly strange in appearance and looking at them makes one think they are...
Forum: ADS-B 12-29-2021, 12:43 PM
Replies: 7
Views: 1,440
Posted By rocketbob
Actually this is not correct. To do a proper...

Actually this is not correct. To do a proper PAPR you need to be in rule airspace for 30 minutes. Above 10K, at or above class C, etc.
Forum: RV Building Tips/Techniques 12-27-2021, 12:25 PM
Replies: 22
Views: 3,388
Posted By rocketbob
I teach students the "3M" rule at shutdown. ...

I teach students the "3M" rule at shutdown. Mixture/Mags/Masters. Hard to miss one if you're always doing all three at once.
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