This might be of interest to anyone who uses a WDH
https://www.youtube.com/watch?v=09ydYbbONBw
Thanks Ron. This video has been around for some years now but the adoring fans of WDH units need to understand that the apparent increase in towball weight is simply a clamping force. The actual towball weight does not change.
More technically gifted persons (KJB?) may choose to explain the physics in detail, but members who dont understand would do well to access videos by John Cadogan where everything is explained clearly and simply.
But I wont hold me breath as some operators simply dont want to know. Cest la vie. Cheers
-- Edited by yobarr on Sunday 28th of May 2023 05:42:00 PM
Sorry Chris, the WDH actually causes a lever wherein the rear axle is the fulcrum, it's action which transfers "weight" to front axles, doesn't increase GVM (Gross Vehicle Mass) of tug other than the carrying of extra weight from the WDH assembly itself.
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Possum; AKA:- Ali El-Aziz Mohamed Gundawiathan
Sent from my imperial66 typewriter using carrier pigeon, message sticks and smoke signals.
Sorry Chris, the WDH actually causes a lever wherein the rear axle is the fulcrum, it's action which transfers "weight" to front axles, doesn't increase GVM (Gross Vehicle Mass) of tug other than the carrying of extra weight from the WDH assembly itself.
Hi Possum.Total mass of car (GVM if you like) decreases while total mass of trailer (ATM if you like) increases.
Weight is transferred from rear axle of car to front axle of car, and also to axle group of the trailer (van).
Percentage of weight transferred to each is dependent on many things, such as wheelbase of car, TBO (Towball overhang) and forward length of van. Towball weight remains constant.
Other variables play their part too, but Im off to work now so can't elaborate.
Perhaps I'll find time to give you a call next Friday or Saturday. Cheers
P.S The rear axle is not the fulcrum as a well-tightened WDH can actually lift the rear axle of a car off the ground.
-- Edited by yobarr on Sunday 28th of May 2023 10:28:31 AM
If anyone is interested, in another similar thread on this forum, I did two postings with some information and some calculations using physics for an example vehicle and van, with and without a WDH.
i am sorry that I am not savvy enough with this forum to link those two posts into this post. Also I find it difficult to copy a whole post with attachments onto another post while using my iPad.
My other posts were in Techies' Corner, Weights and Measures, topic "WDH again"
Probably not so easy on a tablet, but for a PC browser ....
Go back to your post and click Permalink. The address bar now points to the specific post. Copy that URL and then type some words in your new post to describe the link. Highlight those words and click the link button (chain links). Paste the URL into the popup panel and choose for the target to open in new window.
Thanks Are We Lost. I tried the Permalink but got a bit lost.
Your link will help.
I will remember next time, if I feel inclined to copy a post.
I am hoping if people are interested that they will go to my posts for some more information where some physics has been used.
