Journey with Confidence RV GPS App RV Trip Planner RV LIFE Campground Reviews RV Maintenance Take a Speed Test Free 7 Day Trial ×


Reply
 
Thread Tools Display Modes
Old 11-30-2022, 08:38 PM   #1
Junior Member
 
Join Date: May 2022
Posts: 12
Graphing 3-Axis Accelerometer

Apologies in advance for the length of this candidate TLDR post!

When I got home from a 2 1/2 hour highway journey at the end of the recent Thanksgiving weekend, I was a bit surprised to see that some of the neatly organized stuff in my passthrough storage compartment had shifted quite a bit, more so than normal. And I thought the drive home was smooth and without any stuff-jarring incidents. Obviously my left-to-right (and vice versa) motion was a bit more than I thought!

This coupled with an agonizing multi-mile trip a few months ago on a horrible dirt road (8 painful miles if memory serves) during which the glass front of my fireplace bounced off its mounts has me wondering what on earth is going on inside my effectively zero-suspension RV while on the road.

I remember reading some time back, I think on this website, about someone who put something like a go pro camera in their unit and was amazed by how much jostling goes on. And I remember reading posts on the relative lack of decent suspension on most towable RVs.

Finally getting to the point: I'm toying with the idea of securely placing a graphing 3-Axis accelerometer upon my RV kitchen countertop so, after arrival at my destination, if I so desire, I can see what went on, over time, inside my unit from a g-forces in the X-, Y-, and Z-axes perspective.

Has anyone looked into this and found something they like?

I'm going to try the iPhone Accelerometer app during my December trip if I can install it on my aged iPad as I use my iPhone as a GPS during the journey: https://apps.apple.com/us/app/accelerometer/id499629589

Thanks for sticking with this tome through to the end and any thoughts you care to share on a graphical data over time accelerometer showing the left to right, front to back, and up and down craziness that goes on inside our RVs while on the highways and byways we traverse would be appreciated!

Happy travels!

Steve
KerneySA is offline   Reply With Quote
Old 12-01-2022, 08:32 AM   #2
Senior Member
 
SeaDog's Avatar
 
Join Date: Jan 2016
Location: Idaho
Posts: 12,015
I guess I don't see what good doing that would be. You will confirm that stuff gets thrown around which in my experience with my rig is caused by my not securing things properly or driving to fast for the road conditions. JMHO
__________________
Retired Navy
Jake my sidekick (yellow Lab) 10/04 - 05/20
2017 RAM 2500 CC 4X4 Cummins Diesel
2016 Flagstaff 26 FKWS
AF&AM & El Korah Shrine of Idaho
SeaDog is offline   Reply With Quote
Old 12-01-2022, 09:30 AM   #3
Junior Member
 
Join Date: Aug 2022
Location: Lafayette,IN
Posts: 7
I am curious as to what your base line for an acceptable g-force would be? I think a camera would be a better option if you wanted to see what was happening. I think the info you get might be a good talking point, but not very real world useful. I do calibrate single axis accelerometers ( vibration sensors) at work. They are used during dyno testing of motors. It is viewed as a go / no go test on the motors.
__________________
2016 Jayco X17Z (Bought Used 2018-Traded In)
2020 Springdale 202RD (Bought New 2020-Traded In)
2022 Prime Time Avenger 27DBS (Bought New 2022)
2016 F150 2.7 Eco boost (Bought Used 2018)
2018 Nissan Titan XD 5.6L Gas (Bought Used 2023)
Husky 32215 WDH
Millertyme76 is offline   Reply With Quote
Old 12-01-2022, 06:54 PM   #4
Junior Member
 
Join Date: May 2022
Posts: 12
Quote:
Originally Posted by SeaDog View Post
I guess I don't see what good doing that would be. You will confirm that stuff gets thrown around which in my experience with my rig is caused by my not securing things properly or driving to fast for the road conditions. JMHO
That is one reason why I'm looking to collect these types of data, to ensure optimum driving speed based on road conditions. For instance, parts of I-95 SB north of Daytona Beach had stretches with somewhat nasty wear where the passenger side tires normally ride and, if traffic allowed, I was inclined to avoid said rough road by moving to the left until the road wear was back to nominal pavement.
KerneySA is offline   Reply With Quote
Old 12-01-2022, 07:05 PM   #5
Junior Member
 
Join Date: May 2022
Posts: 12
Quote:
Originally Posted by Millertyme76 View Post
I am curious as to what your base line for an acceptable g-force would be? I think a camera would be a better option if you wanted to see what was happening. I think the info you get might be a good talking point, but not very real world useful. I do calibrate single axis accelerometers ( vibration sensors) at work. They are used during dyno testing of motors. It is viewed as a go / no go test on the motors.
Acceptable g-forces are TBD as I have yet to collect any data that, hopefully, will be able to be time-correlated to road conditions. What I'd really like is a way to get the live visual RV vibration data, whether in graphical wave-form or picture/video, into the tow vehicle so, as road conditions deteriorate like on the stretch of un-paved road I can determine optimum speeds or what speeds to avoid. I tried all kinds of speed variations on that nasty 8-mile stretch including 5-10 MPH (no one else was on this nasty 'road') which would have taken FOREVER!

Same for rapid decelerations when I get cut off by someone deciding at the last minute to exit right from the left-most lane. That is what has, in the past, caused my 'not well enough secured' items to shift noticeably.

Perhaps what I need to consider is a re-evaluation of strapping everything down more securely! :-)
KerneySA is offline   Reply With Quote
Old 12-03-2022, 12:27 PM   #6
Senior Member
 
Join Date: Jul 2017
Location: North of Seattle, WA
Posts: 15,518
Data is nice but once collected what plans do you have to use it?

Unless re-engineering the suspension only steps I see to mitigate effects are:

Padding for items stored;
Leaving fragile items home;
Avoiding bumpy roads (especially Forest Service ones);

OR

Just drive slower when conditions dictate.

Sent from my SM-N950U1 using Forest River Forums mobile app
__________________
"A wise man can change his mind. A fool never will." (Japanese Proverb)

"You only grow old when you run out of new things to do"

2018 Flagstaff Micro Lite 25BDS
2004 Nissan Titan
TitanMike is online now   Reply With Quote
Old 12-03-2022, 01:20 PM   #7
Pickin', Campin', Mason
 
5picker's Avatar
 
Join Date: Aug 2015
Location: South Western PA
Posts: 16,973
It seems this forum has issues when someone asks for data if they can't comprehend what you'll do with it.

Many years ago, I was chastised here for asking for data. Instead of answering my question, everyone wanted to know what I was going to do with it and how it would benefit them. My asking wasn't meant to provide anything for them, it was for me but alas... no one could get past that.

I say go for it. Gather whatever data you want and use it however. Let us know if you find anything you believe interesting.

There are several video cameras out there that record to a SD card. Set one up and playback at the end of your trip.

I will tell you a friend of mine towed their camper home from the storage facility once and had his wife ride inside to hold something that had come loose. When they got home she was a terrified wreck saying never again as she described it as the worse Rollercoaster she was ever on.

Sent from my SM-G996U using Forest River Forums mobile app
__________________
2022 Cedar Creek 345IK 5th Wheel•Solar & Inverter•2017 Ford F-Series SCREW 4x4•Factory Puck•B&W Companion•TST Tire Monitor w/Repeater•Sinemate 3500w Gen.
F&AM Lodge 358 Somerset, PA - JAFFA Shrine - Altoona, PA

Days Camped: '18=48 '19=58 '20=110 '21=116 '22=112 '23=32
5picker is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


» Featured Campgrounds

Reviews provided by

Disclaimer:

This website is not affiliated with or endorsed by Forest River, Inc. or any of its affiliates. This is an independent, unofficial site.



All times are GMT -5. The time now is 12:05 AM.