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Search: Posts Made By: humptybump
Forum: RV General Discussion/News 09-08-2019, 12:17 PM
Replies: 13
Views: 1,173
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: VAF Classifieds (posts in here deleted after 30 days) 09-01-2019, 07:36 AM
Replies: 4
Views: 358
Posted By humptybump
I have an EFS-4-5 (for the O-360). Is that the...

I have an EFS-4-5 (for the O-360). Is that the unit you are looking for? I can email details and photos.
Forum: VAF Classifieds (posts in here deleted after 30 days) 08-26-2019, 03:35 PM
Replies: 3
Views: 360
Posted By humptybump
Hi Bruce, I also sent a PM. Hope you find what...

Hi Bruce, I also sent a PM. Hope you find what you need.
Forum: RV General Discussion/News 08-24-2019, 03:20 AM
Replies: 32
Views: 2,076
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: 4,668
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: 1,481
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: 1,481
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: 1,481
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: 1,481
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: 3,535
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: 3,535
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: 3,535
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: 3,535
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: 3,535
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: 3,535
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: 3,535
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: 3,535
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: 3,535
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: 3,535
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: 3,535
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: 3,535
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: 3,535
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: 3,535
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: 3,535
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: 3,535
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: 3,535
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: 53
Views: 7,900
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: 53
Views: 7,900
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: 1,179
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: 486
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: 871
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: 596
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: 1,703
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: 2,346
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: 3,213
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: 21
Views: 12,283
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: 633
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: 2,613
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: 2,613
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...
Forum: Northeast 03-21-2019, 10:07 AM
Replies: 11
Views: 1,315
Posted By humptybump
Paul welcome aboard :D I don’t know if there are...

Paul welcome aboard :D

I don’t know if there are any current builders but there are a few active RV fliers at 7B3 (Hampton Airfield, Hampton NH).

It also has a great diner on the field!
Forum: Electrical Systems 03-12-2019, 04:22 AM
Replies: 0
Views: 666
Posted By humptybump
Tip: crimp tiny connectors without frustration

I would have thought I had posted this before but ...

Big heavy crimps and tiny little connectors are a recipe for frustration. The challenge? How to you place the tiny connector into the crimp...
Forum: RV-7/7A 03-11-2019, 02:55 AM
Replies: 56
Views: 17,905
Posted By humptybump
If foam sculpting isn’t your forte and you have...

If foam sculpting isn’t your forte and you have CAD skills and a 3D printer (or access to them) it’s possible to 3D print the “plugs” with PLA. After fiberglassing, you warm the the part in the oven...
Forum: Northeast 03-11-2019, 02:48 AM
Replies: 144
Views: 61,658
Posted By humptybump
2019 was one of the longest seasons. It had some...

2019 was one of the longest seasons. It had some fits and starts with storms but Paul and the crew did an amazing job as always!
Forum: RV General Discussion/News 02-28-2019, 04:14 PM
Replies: 12
Views: 958
Posted By humptybump
The problem I’m seeing is “fading”. With the...

The problem I’m seeing is “fading”. With the printed document in a clear pouch and “in view” it is also in the sunlight.

Are others noticing fading?
Forum: Propellers 02-22-2019, 04:34 PM
Replies: 17
Views: 4,652
Posted By humptybump
The Catto spinner is amazing. My RV-8 has one on...

The Catto spinner is amazing. My RV-8 has one on its nose. I’m still on the fence about painting mine. I’ll likely do so but it’s definitely not my top priority.




Vlad - I put too much work into...
Forum: Traditional Aircraft Engines 02-18-2019, 05:44 PM
Replies: 11
Views: 2,394
Posted By humptybump
From an uneducated, what are the benefits of...

From an uneducated, what are the benefits of Kevlar vs fiberglass? and to add to the mix, where does carbon fiber fit (or not) in this specific discussion?

Thanks.
Forum: RV-8/8A 02-13-2019, 03:00 PM
Replies: 3
Views: 1,007
Posted By humptybump
There are examples of retrofitting the AOA pitot...

There are examples of retrofitting the AOA pitot tube using the “mast” such as from Gretz and others.

Most examples either install the mast into the outboard inspection panel (just outside the...
Forum: Tools 02-10-2019, 02:15 PM
Replies: 8
Views: 649
Posted By humptybump
Just checked mine and the seat top is at 17”...

Just checked mine and the seat top is at 17” (unmodified). The pneumatic adjustment is still intact. It will go up/down from its current height.

The cheap Kobaullt with the tray looks like a...
Forum: Tools 02-10-2019, 12:15 PM
Replies: 8
Views: 649
Posted By humptybump
I picked up a nice pneumatic lift office chair...

I picked up a nice pneumatic lift office chair from a used office furniture store for “cheap” and made a padded round seat in place of the chair.
Forum: RV General Discussion/News 01-23-2019, 02:47 PM
Replies: 16
Views: 1,972
Posted By humptybump
Marvin, If you subscribe to Kitplanes (or have...

Marvin,


If you subscribe to Kitplanes (or have a friend who does), there is an article in the January 2019 edition on an aux tank project. It goes in rear seat area which only works when you fly...
Forum: RV General Discussion/News 12-24-2018, 08:07 AM
Replies: 25
Views: 3,264
Posted By humptybump
If it’s in your price range, you could buy a...

If it’s in your price range, you could buy a complete Stratux unit with GPS +AHRS and use its internal logging feature to capture everything. (A complete Stratux is under $250...
Forum: RV-9/9A 12-13-2018, 06:00 PM
Replies: 7
Views: 1,141
Posted By humptybump
If the lower exit for the RV-9A on the O320 vs...

If the lower exit for the RV-9A on the O320 vs O360 is anything like the RV-8, then the vertical induction carburetor clearance is the issue.

There are several options such as cutting and lowering...
Forum: APRS Tracking 11-23-2018, 05:51 PM
Replies: 63
Views: 47,522
Posted By humptybump
Looks a bit like an old TV opener...

Looks a bit like an old TV opener ...

https://farm8.staticflickr.com/7612/16259437613_99814a774c.jpg
Forum: RV General Discussion/News 10-28-2018, 06:22 AM
Replies: 3
Views: 1,078
Posted By humptybump
Hi Don, This topic seems to come up every few...

Hi Don,

This topic seems to come up every few years. It’s not always easy to find older stuff on VAF. Here is a link to an old thread describing an RV with 8.50x600 on Matco wheels...
Forum: Midwest 10-26-2018, 03:36 AM
Replies: 24
Views: 3,133
Posted By humptybump
James Bond’s DB-5 only had changing license...

James Bond’s DB-5 only had changing license plates. Pete has changing paint schemes and registrations !
Forum: RV General Discussion/News 10-26-2018, 03:23 AM
Replies: 47
Views: 3,127
Posted By humptybump
An excellent reference is the electrical diagram...

An excellent reference is the electrical diagram IronFlight posted ...

http://www.vansairforce.com/community/showthread.php?t=73527

I used a very similar design for my RV-8 and it has been both...
Forum: Midwest 10-25-2018, 08:03 AM
Replies: 24
Views: 3,133
Posted By humptybump
The new wing loading test procedure?

The new wing loading test procedure?
Forum: Traditional Aircraft Engines 10-22-2018, 02:01 PM
Replies: 15
Views: 2,520
Posted By humptybump
Thanks Sam. You do enjoy a good bowl of pop corn...

Thanks Sam. You do enjoy a good bowl of pop corn :)

To the OP, you are learning as you get involved and read this for and others.

There are two terms to pay attention to - “certified” vs...
Forum: Safety 10-17-2018, 04:22 AM
Replies: 66
Views: 10,236
Posted By humptybump
Flying in various weather conditions is a great...

Flying in various weather conditions is a great training opportunity.

All the improved tools and fancy panel capabilities are helpful. However, I found I made the most progress on my flying by...
Forum: RV Photo/Video URLs 10-17-2018, 03:59 AM
Replies: 4
Views: 1,669
Posted By humptybump
There is a good thread on VAF discussing the...

There is a good thread on VAF discussing the impact of cameras mounted to the wing ...

http://www.vansairforce.com/community/showthread.php?p=888927
Forum: RV General Discussion/News 10-10-2018, 09:13 AM
Replies: 8
Views: 1,027
Posted By humptybump
Ernie - Thanks to adding those photos! I remember...

Ernie - Thanks to adding those photos! I remember using that first on our the RV-1.org restoration update. A great addition!
Forum: GPS 10-09-2018, 07:10 AM
Replies: 8
Views: 1,021
Posted By humptybump
synchronous timing. I just went thru this this...

synchronous timing. I just went thru this this morning and discovered the "solution" that Brantel mentioned. ouch.

FYI: I received an email from G3Xpert and they are aware of the complexity. They...
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