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Search: Posts Made By: rocketbob
Forum: Electronic Ignition Systems Yesterday, 07:49 AM
Replies: 5
Views: 362
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: 6
Views: 341
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: 647
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: 2,758
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: 1,133
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: 2,815
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: 1,612
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: 28
Views: 2,704
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: 7,373
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: 2,220
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: 1,652
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: 1,652
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: 1,652
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: 1,108
Posted By rocketbob
Cessna PN 0721105-5

Cessna PN 0721105-5
Forum: Glass Cockpit 03-05-2022, 03:28 PM
Replies: 178
Views: 50,356
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: 1,993
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: 6,964
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: 953
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: 1,577
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: 1,833
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: 2,291
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: 9,172
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: 911
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: 1,659
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: 3,671
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: 1,730
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: 1,730
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: 1,730
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: 617
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: 975
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: 15,081
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: 527
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: 15,081
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: 8,648
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: 2,984
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: 2,984
Posted By rocketbob
What was the cause?

What was the cause?
Forum: Electrical Systems 01-09-2022, 06:13 PM
Replies: 23
Views: 2,984
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: 65,447
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: 14
Views: 4,356
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: 15,081
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: 14
Views: 4,356
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: 15,081
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: 15,081
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: 15,081
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: 15,081
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: 15,081
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: 15,081
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: 4,809
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: 1,017
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: 2,919
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.
Forum: Traditional Aircraft Engines 12-26-2021, 07:56 AM
Replies: 32
Views: 7,560
Posted By rocketbob
Vlad steady diet of Aeroshell varnishes the...

Vlad steady diet of Aeroshell varnishes the insides.
Forum: Traditional Aircraft Engines 12-26-2021, 07:28 AM
Replies: 32
Views: 7,560
Posted By rocketbob
1. This is an early wide deck IO-360, not a...

1. This is an early wide deck IO-360, not a narrow deck.
2. Rings can wear to have full contact and be fine. You're gonna replace them anyways.
3. These are low time cylinders since last overhaul...
Forum: Job Board 12-24-2021, 07:41 AM
Replies: 10
Views: 2,548
Posted By rocketbob
I know of a travelling IA that takes on large...

I know of a travelling IA that takes on large projects and stays in a class A motorhome for a few weeks at a time. This one is restoring six Seabees.
Forum: RV Building Tips/Techniques 12-16-2021, 03:21 PM
Replies: 9
Views: 1,287
Posted By rocketbob
In the last month I have dealt with two fuel...

In the last month I have dealt with two fuel selectors in Cherokee 6's that have steel components inside that had pretty severe internal rust.
Forum: Electrical Systems 12-13-2021, 11:11 AM
Replies: 24
Views: 3,305
Posted By rocketbob
Disable/bypass the crowbar OV protection and see...

Disable/bypass the crowbar OV protection and see if the issue persists. Small transients can cause them to trip the breaker, but are too fast in duration to show in your voltmeter.
Forum: Fuel Injection Systems 12-13-2021, 10:55 AM
Replies: 8
Views: 1,116
Posted By rocketbob
4AN is the proper size from servo to divider.

4AN is the proper size from servo to divider.
Forum: Traditional Aircraft Engines 12-12-2021, 08:31 AM
Replies: 33
Views: 4,901
Posted By rocketbob
an electronic ignition can now be used to solve a...

an electronic ignition can now be used to solve a political problem. Awesome!
Forum: Midwest 12-10-2021, 09:07 AM
Replies: 7
Views: 953
Posted By rocketbob
good to have you back Frank! Call me and I will...

good to have you back Frank!

Call me and I will give you some options.
Forum: Electrical Systems 12-09-2021, 08:24 AM
Replies: 9
Views: 1,132
Posted By rocketbob
Schottkys are faster switching and are better...

Schottkys are faster switching and are better suited for this application. Recently I dealt with a keyswitch that had burned contacts internally due to arcing caused by a starter contactor. The...
Forum: Electrical Systems 12-08-2021, 09:21 AM
Replies: 9
Views: 1,132
Posted By rocketbob
Not sure what an NTE15 diode is. Generally...

Not sure what an NTE15 diode is. Generally snubber diodes are a good addition for preventing arcing in the switch when switching an inductive load. Not any diode is suitable, has to be a schottky...
Forum: RV General Discussion/News 12-06-2021, 05:50 AM
Replies: 14
Views: 2,012
Posted By rocketbob
I have used pressure washers on engines that were...

I have used pressure washers on engines that were full bird nests and mud and had zero problems. Taped up the vents on the mags and had at it.
Forum: RV Ongoing Maintenance Issues 12-04-2021, 06:19 PM
Replies: 27
Views: 5,518
Posted By rocketbob
My -6 mount had cracks so I made some rings to go...

My -6 mount had cracks so I made some rings to go around the OD of the sockets shaped such to fit around the tubes and welds. When I TIG welded everything the socket ID shrank which made the fit...
Forum: Electronic Ignition Systems 12-02-2021, 02:49 PM
Replies: 37
Views: 7,300
Posted By rocketbob
Thanks Don. Now I am remembering the AFP...

Thanks Don.

Now I am remembering the AFP innards. Slots cut with a wire EDM as opposed to the triangular holes in the Bendix.
Forum: Electronic Ignition Systems 12-02-2021, 11:13 AM
Replies: 37
Views: 7,300
Posted By rocketbob
This is true on the Bendix flow dividers but the...

This is true on the Bendix flow dividers but the AFP dividers have a completely different internal design.
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