New Andersen WD hitch
A fellow camper bud showed me this. It's new and different. Anyone using one? Andersen WD hitches A U-tube video with the factory guy explaining it. You have to get past MR Truck doing his...
Forum Discussion
JBarca wrote:John, the answer depends on how much the urethane spring can be compressed and how the "spring rate" changes beyond 1/4" of compression. We don't have that information for the Andersen WD springs.
---The question comes down to can the Andersen hitch create 7,800# of force in each chain used on my setup for a 1,400# TW and how much compression will that be?---
Is the urethane so compressed that that very small changes in compression of the urethane greatly affect the WD? It may not be as smooth as Bruce's data for load verses compression when at the other end of the force range.Again, we don't know the spring properties beyond the 1/4" compression measured by Bruce. This webpage shows urethane spring load-deflection curves for deflections up to 0.8". But, no plot shows loads up to 1200#.
If I use Bruce's data where he used a force gage in the chain, 1/16" = 600# of chain force. If this is a linear relationship which I doubt it is, for 7,800# chain force it would need to compress 13/16"Bruce's data showed a load of 260# per chain required for a compression of 1/16". Again, we don't know what happens beyond 1/4".
I have my doubts that will happen with the size of wrenches we are talking about here. This may also come down to that Andersen has a totally different thought process on what is good WD. They show a F250 in their video. They may allow the truck to take bear more of the TW on the rear axle and let the front go light.In this post, Renojack indicated the maximum compression he could achieve was a little over 3/8".
I will have to find which poster stated he could not pull any harder on the wrench to get more WD.
Ron
