RV News RVBusiness 2021 Top 10 RVs of the Year, plus 56 additional debuts and must-see units → ×
RV Trip Planning Discussions

Go Back   iRV2 Forums > MOTORHOME FORUMS > Toads and Motorhome Related Towing
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Reply
 
Thread Tools Search this Thread Display Modes
 
Old 09-01-2019, 10:46 AM   #141
Senior Member
 
Reacher's Avatar
 
Tiffin Owners Club
Join Date: Apr 2019
Posts: 671
Quote:
Originally Posted by Mr_D View Post
One thing almost everyone misses is that some states (at least WA, OR and CA) do not consider a motorized vehicle being towed to be a "trailer" and the braking laws change to a performance spec.

https://auto.howstuffworks.com/auto-...gulations1.htm

Now try that on your insurance co after an unfortunate incident.
__________________
2019 Open Road 34PA
2016 Ford C-Max Energi Toad
Reacher is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 10-04-2019, 09:03 AM   #142
Senior Member
 
bamaboy473's Avatar
 
Join Date: Jun 2014
Location: Gulf Coast, Alabama
Posts: 2,440
After 10 pages of education, admonishments, advice and...otherwise...this work in process has reached the beta stage, I think.

Invisibrake was the braking system I bought, and would consider another type if I ever were to install into a sports car with power seats. Jeeps have a lot of room under the driver's seat; not so with BMWs, so the device sits on the rear floorboard, which is not ever going to be a problem for us.

The tow brackets were re-designed in order to provide a correct seating for the Blue Ox arms, and adding chain links for the safety chains was done, too.

Breakaway is inside the engine bay, as is a power wire that will charge the battery while the coach is traveling.

At first test, turn signals and running lights work properly, brake lights don't. That will be the next step, and then the braking testing will start.

Thoughts? What's missing?
Attached Thumbnails
Click image for larger version

Name:	001.JPG
Views:	15
Size:	137.4 KB
ID:	262381   Click image for larger version

Name:	002.JPG
Views:	13
Size:	137.5 KB
ID:	262382  

Click image for larger version

Name:	008.JPG
Views:	14
Size:	137.9 KB
ID:	262383   Click image for larger version

Name:	007.JPG
Views:	14
Size:	137.1 KB
ID:	262384  

Click image for larger version

Name:	006.JPG
Views:	12
Size:	137.9 KB
ID:	262385  
__________________
Rick and Sandy
2003 American Eagle, 59K miles
bamaboy473 is offline   Reply With Quote
Old 10-05-2019, 08:58 AM   #143
Senior Member
 
Reacher's Avatar
 
Tiffin Owners Club
Join Date: Apr 2019
Posts: 671
Looks like a well done "professional" job. Congrats and happy towing!
__________________
2019 Open Road 34PA
2016 Ford C-Max Energi Toad
Reacher is offline   Reply With Quote
Old 10-05-2019, 12:44 PM   #144
Senior Member
 
AKIQPilot's Avatar
 
Join Date: Mar 2017
Location: Alaska in Summer Snow Birds in Winter
Posts: 1,635
It appears that your safety chains connect to the same tab coming out of the bumper as your towbar attaches? It lookes like the safety chain even uses the same bolt that the towbar tab uses. It also looks like the entire system is in single sheer.

This is not how a properly engineered flat tow system looks. Its better than your first couple of tries but far from a properly designed and engineered system.
__________________
Tom and Sherry W.
06 Winnebago Adventurer 38J Workhorse W24 Lots of motor and suspension mods in the works
02 Itasca Suncruiser 35U. Workhorse W22 w/Safe-T-Plus, Koni FSDs, UltraTrac, etc, etc.
AKIQPilot is offline   Reply With Quote
Old 10-06-2019, 10:19 PM   #145
Senior Member
 
bamaboy473's Avatar
 
Join Date: Jun 2014
Location: Gulf Coast, Alabama
Posts: 2,440
Please explain what "single sheer" means. Google just shows drapes.

Also, from a logic viewpoint, what are the odds that a base tab could be ripped from the frame, or that Grade 8 bolts could snap? It would have to be some un-worldly amount of stress, wouldn't it?

That is what the break-away system is for, anyway, isn't it?

P.S. thanks for the thoughts about how to make it better.
__________________
Rick and Sandy
2003 American Eagle, 59K miles
bamaboy473 is offline   Reply With Quote
Old 10-07-2019, 12:58 AM   #146
Senior Member
 
AKIQPilot's Avatar
 
Join Date: Mar 2017
Location: Alaska in Summer Snow Birds in Winter
Posts: 1,635
SIMPLE questions about towing 4-Down

Quote:
Originally Posted by bamaboy473 View Post
Please explain what "single sheer" means. Google just shows drapes.



Also, from a logic viewpoint, what are the odds that a base tab could be ripped from the frame, or that Grade 8 bolts could snap? It would have to be some un-worldly amount of stress, wouldn't it?



That is what the break-away system is for, anyway, isn't it?



P.S. thanks for the thoughts about how to make it better.


Single shear is when a bolt is used to clamp two pieces of metal together. Double shear would be more like a sandwich where the two pieces of bread sandwich the tab in the middle. The bolt clamps the tab between two pieces of steel spreading the load equally doubling the force required to shear the bolt off.

The hitch point you built where the hitch pin goes through your tabs and the blue ox tab is in the middle is in double shear. All blue ox tow bar fittings are either in double or triple shear. The part of your baseplate where the 1/2 flat bar is bolted to the adapter you built is in single shear.

I will find an example of double shear for you.

As far as the safety cables go, the most likely place for a properly maintained towbar to fail is at the baseplate to towbar connecting points. For this reason most towbars are designed so that the safety cables attach to the frame or to a part of the baseplate that is not part of the towbar connecting point. Essentially the base plate tab could break off and the safety cables are still securely affixed to the vehicles, either directly to the frame or to another point independent of the towbar connecting point.
__________________
Tom and Sherry W.
06 Winnebago Adventurer 38J Workhorse W24 Lots of motor and suspension mods in the works
02 Itasca Suncruiser 35U. Workhorse W22 w/Safe-T-Plus, Koni FSDs, UltraTrac, etc, etc.
AKIQPilot is offline   Reply With Quote
Old 10-07-2019, 01:09 AM   #147
Senior Member
 
AKIQPilot's Avatar
 
Join Date: Mar 2017
Location: Alaska in Summer Snow Birds in Winter
Posts: 1,635
Here is an image showing single and double shear. In double shear you have to apply twice the force to shear the bolt as compared to single shear.

Click image for larger version

Name:	IMG_9620.jpg
Views:	18
Size:	125.1 KB
ID:	262784
__________________
Tom and Sherry W.
06 Winnebago Adventurer 38J Workhorse W24 Lots of motor and suspension mods in the works
02 Itasca Suncruiser 35U. Workhorse W22 w/Safe-T-Plus, Koni FSDs, UltraTrac, etc, etc.
AKIQPilot is offline   Reply With Quote
Old 10-07-2019, 01:23 AM   #148
Senior Member
 
guardrail53's Avatar


 
Monaco Owners Club
Vintage RV Owners Club
Join Date: Sep 2014
Location: anywhere U.S.A, Currently back home in Thailand!
Posts: 3,874
Quote:
Originally Posted by bamaboy473 View Post
OK, back to the re-design of the towing apparatus. Here is a fabrication to address two of the major concerns; a proper attaching point on the car, and safety chain attachment.
Look at what I'm thinking and give me your thoughts, please.

The safety chains will attach to a horseshoe that hangs below the plate.

I'm thinking of doing away with the Ready brake, and thinking of getting an in-car braking assist.

Is ReadyBrake or similar absolutely critical to have if we have safety chains?
I agree with AKIQPilot, in that it needs to be at least double shear!
Also, looking at your pic's of the prototype, I would gusset the back side also, to help with the force that will be pulling on the straight up piece.
Other than that, looks good!
Let us know how it goes after you tow it! Rail!

PS. I read the whole thread, and waited to comment till the last, just so I would not repeat what others have already said! Some, I would not repeat, no matter what!
__________________
Retired, and "Always on Holiday!"
1996 Monaco Windsor 38PB, "Mona" 275 HP., 8.3 Cummins, 3060 Allison 6 speed, 2001 PT Cruiser, "Bailey"
guardrail53 is offline   Reply With Quote
Old 10-08-2019, 05:57 AM   #149
Senior Member
 
bamaboy473's Avatar
 
Join Date: Jun 2014
Location: Gulf Coast, Alabama
Posts: 2,440
Great explanation. The fix would be to remove the bumper skin again and bolster the tab sections. It's also possible that I could add additional tabs that would serve as cable ports for the safety cables. Not exactly a fine-looking set-up, but more in line with a correct way to do it.

Thanks again.
__________________
Rick and Sandy
2003 American Eagle, 59K miles
bamaboy473 is offline   Reply With Quote
Reply

Tags
tow, towing



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Simple question/simple answer JF1957 Allison Transmission Forum 5 10-10-2016 11:54 AM
Considering a Class C & have simple before buy questions johnandcaren Class C Motorhome Discussions 20 11-14-2013 08:59 PM
Simple solar wiring questions Cubey RV Systems & Appliances 9 05-18-2013 11:44 PM
Two Simple Maintenance Questions Retread Excel Owner's Forum 16 11-28-2010 08:16 PM
Two simple questions...so far.. Executive Monaco Owner's Forum 16 02-27-2010 10:31 PM


All times are GMT -6. The time now is 04:48 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2020, vBulletin Solutions, Inc.