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Search: Posts Made By: humptybump
Forum: RV Ongoing Maintenance Issues 03-14-2020, 04:45 AM
Replies: 13
Views: 1,301
Posted By humptybump
"Tools and torques" is a great suggestion. I...

"Tools and torques" is a great suggestion. I found I was always asking the A&P "umm, what torque do I use for XYZ".
Forum: RV Ongoing Maintenance Issues 03-12-2020, 05:41 AM
Replies: 13
Views: 1,301
Posted By humptybump
What gets opened/removed for condition inspections?

I’ve never quite known exactly what must/should be opened up for the condition inspection. This thread may be helpful to new owners.

Here is a list of items from an RV-8 (in no particular order)

...
Forum: RV Building Tips/Techniques 02-25-2020, 04:40 AM
Replies: 24
Views: 2,116
Posted By humptybump
I use alcohol and an old toothbrush ... you...

I use alcohol and an old toothbrush ... you suppose to replace that tooth brush every 6 months so you'll always have a supply (just run it through the dish washer first). :D
Forum: RV General Discussion/News 02-24-2020, 05:10 AM
Replies: 36
Views: 2,084
Posted By humptybump
I just looked at your outlook forecast and it...

I just looked at your outlook forecast and it isn't going below 40F at night. If you are already past the coldest part of this season, you may opt to delay the acquisition of a pre-heat solution. If,...
Forum: Trip Write-ups 02-22-2020, 01:35 AM
Replies: 23
Views: 2,006
Posted By humptybump
Smiles all...

Smiles all...
Forum: Trip Write-ups 02-21-2020, 06:02 PM
Replies: 23
Views: 2,006
Posted By humptybump
Looks...

Looks...
Forum: RV General Discussion/News 02-09-2020, 02:05 PM
Replies: 13
Views: 2,056
Posted By humptybump
Stewardship - Then and Now

Today I watched my RV-8 become someone else's RV-8. It was a good day.

When I took stewardship of N125TH it had a 150hp O320 engine, a wooden propeller, analog instruments, and bare aluminum. The...
Forum: RV-6/6A 02-04-2020, 04:11 AM
Replies: 5
Views: 571
Posted By humptybump
If the airplane has the traditional fuel...

If the airplane has the traditional fuel selector, there is an unused port. That port is used in the following Kitplanes article:

https://www.kitplanes.com/adding-an-auxiliary-fuel-tank-to-an-rv-8/
Forum: RV Ongoing Maintenance Issues 01-29-2020, 07:12 AM
Replies: 29
Views: 3,387
Posted By humptybump
I may just do that. I will point back to Walt's...

I may just do that.


I will point back to Walt's post to replace tubes even when flipping tires. When I did the mild inflation test of the tube to check for leaks, it was definitely not uniformly...
Forum: RV Ongoing Maintenance Issues 01-29-2020, 04:59 AM
Replies: 29
Views: 3,387
Posted By humptybump
Closing out my post ... I replaced the valve...

Closing out my post ...

I replaced the valve core and it appeared to solve the problem ... but it didn't. It did dramatically slow the leak but it still wasn't "done".

I replaced the tube.

Case...
Forum: RV General Discussion/News 01-28-2020, 06:04 AM
Replies: 46
Views: 17,049
Posted By humptybump
Here is what I built from Pierre's original...

Here is what I built from Pierre's original photos. (WARNING: this link won't last more than a couple months)

http://53vg.com/rv84sale/files/IMG_8118.JPG
Forum: RV General Discussion/News 01-27-2020, 04:50 PM
Replies: 32
Views: 4,144
Posted By humptybump
For control surface gust locks, I've been a big...

For control surface gust locks, I've been a big fan of the simple design Pierre posted many years back:

http://www.vansairforce.com/community/showpost.php?p=542609&postcount=1

On a tail wheel...
Forum: Reviews 01-23-2020, 08:25 AM
Replies: 1
Views: 538
Posted By humptybump
Thumbs up Base Leg Aviation - encyclopedic knowledge and professional service!

Recently, I took my RV-8 down to Base Leg Aviation (Vic Syracuse).

I just wanted to post a brief note and say how much I appreciate their skills and depth of knowledge.

No two RV's are exactly the...
Forum: RV Ongoing Maintenance Issues 01-16-2020, 08:20 AM
Replies: 29
Views: 3,387
Posted By humptybump
I mostly agree. However, replacing the tube...

I mostly agree. However, replacing the tube without identifying the issue still has the potential to repeat.

I won't have 100% confidence unless I know the cause and address it specifically.
Forum: RV Ongoing Maintenance Issues 01-16-2020, 06:36 AM
Replies: 29
Views: 3,387
Posted By humptybump
I always replaced tubes with tires But kept tubes...

I always replaced tubes with tires But kept tubes with tires. Each of the A&P 's who have done my condition inspection have instructed me on the process of flipping the tires and never suggested...
Forum: RV Ongoing Maintenance Issues 01-16-2020, 06:08 AM
Replies: 29
Views: 3,387
Posted By humptybump
Tubed tires. No nails or damage to tyre. Could be...

Tubed tires. No nails or damage to tyre. Could be minute damage to stem. These tires and tubes are 3 seasons and have been rotated once.

I'll monitor for another 1-2 days and the. Remove to test...
Forum: RV Ongoing Maintenance Issues 01-16-2020, 05:36 AM
Replies: 29
Views: 3,387
Posted By humptybump
Random flat tire / tyre ?

What might cause the following:


Went to the hangar and one tire was flat.
It wasn't flat the day before or the day before that.
I had flown 7 days prior.
Put air in the time and it's been...
Forum: RV General Discussion/News 01-13-2020, 06:46 AM
Replies: 48
Views: 4,537
Posted By humptybump
As previously noted, the challenge will not be...

As previously noted, the challenge will not be with the weather instruments but rather with the radio transmissions. I'm not fluent on FCC/FAA license requirements for automated radio...
Forum: APRS Tracking 01-03-2020, 08:51 AM
Replies: 2
Views: 1,369
Posted By humptybump
That is handy!

That is handy!
Forum: Fuel Injection Systems 12-28-2019, 07:32 AM
Replies: 57
Views: 4,145
Posted By humptybump
From what I've read, the Shorai and EarthX use...

From what I've read, the Shorai and EarthX use very different formulas for rating their battery capacity. The Shorai method is "generous" if you are looking at it for running electronics.

Like Mike...
Forum: RV General Discussion/News 12-18-2019, 03:08 AM
Replies: 5
Views: 974
Posted By humptybump
This is a nice way to start the day! Thanks to...

This is a nice way to start the day! Thanks to John and continued success to the ENP!
Forum: RV General Discussion/News 11-07-2019, 09:17 AM
Replies: 27
Views: 3,521
Posted By humptybump
Previous Posts hit a couple very good points...

Previous Posts hit a couple very good points which match my experience. I will quote two ...


I managed an "OK" job on the first seeding and then top seeded the following year. It took a couple more...
Forum: Electrical Systems 10-31-2019, 02:27 PM
Replies: 9
Views: 1,286
Posted By humptybump
Found an interesting design and ordered it. It...

Found an interesting design and ordered it. It comes in several wire gauge ranges. I chose the 18-28 gauge. It feel really cheap but it works well on my initial tests. It's also small and light...
Forum: RV General Discussion/News 10-30-2019, 03:43 AM
Replies: 3
Views: 530
Posted By humptybump
Another great team building event for Eagles...

Another great team building event for Eagles Nest!

(go Nationals :D)
Forum: Electrical Systems 10-27-2019, 05:22 AM
Replies: 9
Views: 1,286
Posted By humptybump
Recommendations for left handed wire strippers

Stop laughing. OK. Now that you're over the giggling, I hope you can add to this thread.

I'm looking for recommendations for wire strippers. They need to work down to at least 28 gauge wire. They...
Forum: RV General Discussion/News 09-08-2019, 12:17 PM
Replies: 13
Views: 1,763
Posted By humptybump
I made the switch to 380-150-5 tyres several...

I made the switch to 380-150-5 tyres several years back. Like others, I made the choice because they fit stock wheels.

If you are “building new” then there are more options. If you are retrofitting...
Forum: RV General Discussion/News 08-24-2019, 03:20 AM
Replies: 32
Views: 3,461
Posted By humptybump
Aircraft with ADSB Out (non anonymous) can be...

Aircraft with ADSB Out (non anonymous) can be followed live*using sites/apps like FlightAware.

* in real world testing, there is a delay of a couple of minutes
Forum: RV General Discussion/News 08-15-2019, 04:24 AM
Replies: 56
Views: 6,383
Posted By humptybump
Happy Place

Rather than look at the science of an operational sweet spot, I take a gut feeling.

Personally, every airplane I’ve flown feels best at some combination of throttle, mixture, altitude, etc.

My...
Forum: Reviews 08-05-2019, 03:41 AM
Replies: 14
Views: 1,962
Posted By humptybump
The electric chair / scooter makes a great...

The electric chair / scooter makes a great platform! I have a friend who has built a “manual” tug using one.
Forum: Reviews 08-04-2019, 01:50 PM
Replies: 14
Views: 1,962
Posted By humptybump
Here are a few pics from the fabrication...

Here are a few pics from the fabrication ...

http://elder.ninja/wp-content/uploads/2019/08/original-72-575x383.jpg

You can compare the inner and outer panels from this paint booth photo.

Inner...
Forum: Reviews 08-04-2019, 08:47 AM
Replies: 14
Views: 1,962
Posted By humptybump
Yes. The track system is comprised of parallel...

Yes.

The track system is comprised of parallel plates with standoffs. There are inner plates and outer plates. These were cut on a CNC from drawings in Fusion 360.

The tracks run on 3D printed...
Forum: Reviews 08-03-2019, 03:09 PM
Replies: 14
Views: 1,962
Posted By humptybump
I decided to roll my own ... yes, I’m a little...

I decided to roll my own ... yes, I’m a little...
Forum: Electrical Systems 07-28-2019, 09:43 AM
Replies: 51
Views: 4,445
Posted By humptybump
Postmortem: alternator internal voltage regulator failure

tl;dr

To answer which problem came first, the alternator or the battery? The alternator.

details:

I performed a bench test of the alternator (standard Vans model with internal voltage regulator...
Forum: Electrical Systems 07-26-2019, 10:55 AM
Replies: 51
Views: 4,445
Posted By humptybump
Nothing here is “super secret information”. I’m...

Nothing here is “super secret information”. I’m not sure why there is an interpretation to the contrary.

I’ve not mentioned the vendor as the situation is still under investigation and it would be...
Forum: Electrical Systems 07-26-2019, 10:28 AM
Replies: 51
Views: 4,445
Posted By humptybump
From my reading of different BMS’s behaviors, a...

From my reading of different BMS’s behaviors, a key feature of the EarthX BMS appears to be its ability to differentiate a high operating temperature while under extreme load vs under a more normal...
Forum: Electrical Systems 07-26-2019, 09:18 AM
Replies: 51
Views: 4,445
Posted By humptybump
Otis - It sounds like you have a well thought out...

Otis - It sounds like you have a well thought out electrical design.

Primarily as a personal query, do you have discrete panel indicators for your batteries and alternator?

I have a smart indicator...
Forum: Electrical Systems 07-26-2019, 08:01 AM
Replies: 51
Views: 4,445
Posted By humptybump
It appears one of the moderators took it upon...

It appears one of the moderators took it upon themselves to change the title of this thread to exclude EarthX.

I have no control over what moderators do on these forums.

I will repeat two...
Forum: Electrical Systems 07-26-2019, 07:16 AM
Replies: 51
Views: 4,445
Posted By humptybump
Ideally, I would have read my battery’s manual...

Ideally, I would have read my battery’s manual *before* purchasing. Had I thought this deeply about the issues and potential scenarios, then I could decide to either contact the vendor or go with a...
Forum: Electrical Systems 07-26-2019, 01:10 AM
Replies: 51
Views: 4,445
Posted By humptybump
Hi Kathy, hope you guys are having a great...

Hi Kathy, hope you guys are having a great Airventure (now that it’s dried out a bit).

I’d like to commend EarthX on having some of the best documentation I’ve read as I investigate my...
Forum: Electrical Systems 07-25-2019, 06:11 PM
Replies: 51
Views: 4,445
Posted By humptybump
Carl, I agree that 30 minutes of backup is not...

Carl, I agree that 30 minutes of backup is not prudent for an IFR flight.

My description of a “30 minute flight” was not an indication of the system’s limit. As I said, “The backup was more than...
Forum: Electrical Systems 07-25-2019, 04:56 PM
Replies: 51
Views: 4,445
Posted By humptybump
It’s a good option for “point based backup...

It’s a good option for “point based backup power”. In my case, I have a “smart idiot light” monitoring my backup battery just like the one I have on my main battery; and my backup can be isolated...
Forum: Electrical Systems 07-25-2019, 04:42 PM
Replies: 51
Views: 4,445
Posted By humptybump
Sorry for your frustration. Different batteries...

Sorry for your frustration. Different batteries have different BMS features and behaviors. More important is that any details of a particular product today need to be understood as a “point in...
Forum: Electrical Systems 07-25-2019, 03:05 PM
Replies: 51
Views: 4,445
Posted By humptybump
There was nothing in the literature that I could...

There was nothing in the literature that I could find. The BMS features they described spoke mostly of preventing over-discharge. After my incident, I dug deeper and found a description of the BMS...
Forum: Electrical Systems 07-25-2019, 11:00 AM
Replies: 51
Views: 4,445
Posted By humptybump
What I’ve learned by reading the available...

What I’ve learned by reading the available literature is that each vendor implements BMS in their own way.

Some BMS will isolate the battery in an over voltage situation. Other BMS will prevent...
Forum: Electrical Systems 07-25-2019, 09:36 AM
Replies: 51
Views: 4,445
Posted By humptybump
There was not a large or unusual draw on the...

There was not a large or unusual draw on the electrical system. I typically see 6-8 amps of “usage” when flying VFR day with autopilot.

I have received some details from my battery’s manufacturer...
Forum: Electrical Systems 07-25-2019, 06:37 AM
Replies: 51
Views: 4,445
Posted By humptybump
Your comment is apropos. If you have an “electric...

Your comment is apropos. If you have an “electric dependent design or mission” then it’s good to know how it will respond to adverse scenarios of your electrical sources.
Forum: Electrical Systems 07-24-2019, 06:57 PM
Replies: 51
Views: 4,445
Posted By humptybump
Small update: I’ve attempted to reach out to the...

Small update:

I’ve attempted to reach out to the manufacturer of the battery I am currently using as my main battery.

Thus far, the manufacturer has not provided any details of how their BMS...
Forum: Electrical Systems 07-22-2019, 04:35 PM
Replies: 51
Views: 4,445
Posted By humptybump
Let me try to get some answers: My airplane is...

Let me try to get some answers:

My airplane is basic. Dual mags.

My warning is set at 15.0V. I observed 15.3V while I was attempting to diagnose.

It’s unclear when the battery disconnected.

After...
Forum: Electrical Systems 07-22-2019, 07:04 AM
Replies: 51
Views: 4,445
Posted By humptybump
BMS and you’re failure scenarios (Not an EarthX)

Update: I have never said who the battery vendor is. After a good open discussion of several days, a moderator took it upon themselves to change the title of my thread to add “(Not EarthX)”. I did...
Forum: Glass Cockpit 07-19-2019, 09:33 AM
Replies: 58
Views: 14,313
Posted By humptybump
Thanks Steve, The reason for my question was...

Thanks Steve,

The reason for my question was that - in a tandem aircraft, there is limited panel space and the G5 makes a great backup instrument. Much of the time it is idle.

A single G3X Touch...
Forum: Glass Cockpit 07-19-2019, 04:07 AM
Replies: 58
Views: 14,313
Posted By humptybump
Apologies for being obtuse but I’m struggling to...

Apologies for being obtuse but I’m struggling to parse this.

If I have a G3X Touch with GEA24 will I be able to display engine data on a G5?
Forum: Reviews 07-18-2019, 02:07 AM
Replies: 9
Views: 1,341
Posted By humptybump
Peanuts. Chocolate. Espresso beans. ... just...

Peanuts. Chocolate. Espresso beans.

... just sayin’
Forum: RV General Discussion/News 07-01-2019, 02:48 PM
Replies: 2
Views: 705
Posted By humptybump
The EN program continues to amaze me! I know it...

The EN program continues to amaze me! I know it didn’t happen by magic and it didn’t happen over night. It happened because a few smart people had an insane idea and the spirit to attract many more...
Forum: RV General Discussion/News 06-23-2019, 04:24 AM
Replies: 9
Views: 1,006
Posted By humptybump
Consider Hampton Airfield (7B3) if it fits your...

Consider Hampton Airfield (7B3) if it fits your itinerary. There’s usually some interesting aircraft, a handful of RVs on the field, and the family run cafe has good food.
Forum: RV General Discussion/News 06-18-2019, 04:51 PM
Replies: 4
Views: 757
Posted By humptybump
Ernie, there is a gold star in the skies just for...

Ernie, there is a gold star in the skies just for you! Amazing work by the Eagles Nest organization, the mentors, and most of all, the students!
Forum: Electrical Systems 06-10-2019, 04:03 PM
Replies: 15
Views: 2,033
Posted By humptybump
An alternative is to move the PTT for the...

An alternative is to move the PTT for the passenger to the panel (or side panel).

I often pull the rear stick in my RV-8 and decided to eliminate the wires all together. The PTT is now next to where...
Forum: Acts of Charity (using your RV) 06-06-2019, 03:48 AM
Replies: 11
Views: 4,029
Posted By humptybump
It’s surprising how quickly a pollen flare-up can...

It’s surprising how quickly a pollen flare-up can occur.
Forum: RV-8/8A 04-16-2019, 09:51 AM
Replies: 14
Views: 3,696
Posted By humptybump
Update: inspection of the fiberglass & carbon...

Update: inspection of the fiberglass & carbon fiber airbox at [a little less than] 50 hrs and it looks just like it did before first flight.

While I don’t have numbers for air throughput, the O360...
Forum: RV-8/8A 04-14-2019, 02:30 PM
Replies: 28
Views: 13,754
Posted By humptybump
That image looks familiar. My RV-8 has long legs...

That image looks familiar. My RV-8 has long legs now too ...

http://elder.ninja/wp-content/uploads/2014/05/RV-8_AUX_range.jpg

The green circle is for no-refuel round-trip flights and the yellow...
Forum: RV General Discussion/News 03-28-2019, 10:29 AM
Replies: 2
Views: 687
Posted By humptybump
Similar approach to Paul when it came to the...

Similar approach to Paul when it came to the design for my RV-8. I used the 3-view from Vans and then used my choice of photo editor / paint programs. (in my case it was...
Forum: Glass Cockpit 03-26-2019, 12:55 PM
Replies: 17
Views: 3,161
Posted By humptybump
Thanks. I am not planning to add the BT...

Thanks. I am not planning to add the BT connection.


TBH, what I need are bigger winds aloft flags :cool:
Forum: Glass Cockpit 03-26-2019, 12:44 PM
Replies: 17
Views: 3,161
Posted By humptybump
My original GDL-39 is connected via serial...

My original GDL-39 is connected via serial data.

I don't recall ow many concurrent Bluetooth connections the original GDL-39 supports ans I assume making this change will reduce that by one? How...
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