โMar-08-2016 09:32 AM
โMar-16-2016 06:06 PM
jerem0621 wrote:
I have always understood Cummins argument to be that there is no way to put an actual padlock on the locking handle... This is a valid concern... even if its a 99.9999% never a problem... the wonderer with mischievous intent and a little knowledge could easily un twist the handle while someone is stopped.
I don't think it would take much.. literally pennies in manufacturing... to allow the lock handle to have a tab that matched up to the body of the twist lock so that the owner could simply install a padlock for some peace of mind.
Thanks!
Jeremiah
โMar-16-2016 06:01 PM
laknox wrote:
Personally, I'd like to see them test-to-destruction 4 hitches, with forces applied fore/aft and left/right. Maybe 8 hitches with forces applied at a 45 on each corner, too... I think they would be a =lot= more real-world than a crush test. My first thought after watching the video was, "nice, but how does that apply to actual towing?"
Lyle
โMar-16-2016 05:58 PM
IdaD wrote:Cummins12V98 wrote:laknox wrote:Cummins12V98 wrote:N-Trouble wrote:
What does locking the RV to the hitch accomplish?
It will keep someone from pulling the handle and have the possibility of the RV disconnecting from the hitch. Yes it can and has happened.
Don't see how that could happen with a ball hitch, unless it's unlatched and you hit a =massive= bump or pot hole, enough to lift the entire rig off the roadway. You don't back into an Andersen like a FW, you drop the pin box ON the ball, just as you do with a GN trailer.
Lyle
I fully understand how the Andersen system works and I also understand there are conditions on Americas highways that the RV could easily pop off the Andersen.
Example we were traveling on I-15 and took a exit the asphalt was gouged down for re paving. My RV hit the dip so hard the RV and truck was airborne. Our KitchenAid mixmaster always sat on the kitchen slide and is very heavy it went from it's place to the island made a mark on the Corian and then proceeded to end up on the dining table. So I guarantee if I had a Andersen and someone pulled the handle the RV would have become dislodged!
IMHO a BIG shortcoming of the Andersen is the inability to be able to lock the rV to the hitch.
You keep bringing this up and it's apparent that you've never been around an Andersen hitch. When you push the lever in to lock the pin that holds the adapter to the ball, and then twist it firmly, it won't disconnect even if you drop it off a cliff. It certainly doesn't loosen and then disengage on it's own.
โMar-16-2016 05:48 PM
Cummins12V98 wrote:laknox wrote:Cummins12V98 wrote:N-Trouble wrote:
What does locking the RV to the hitch accomplish?
It will keep someone from pulling the handle and have the possibility of the RV disconnecting from the hitch. Yes it can and has happened.
Don't see how that could happen with a ball hitch, unless it's unlatched and you hit a =massive= bump or pot hole, enough to lift the entire rig off the roadway. You don't back into an Andersen like a FW, you drop the pin box ON the ball, just as you do with a GN trailer.
Lyle
I fully understand how the Andersen system works and I also understand there are conditions on Americas highways that the RV could easily pop off the Andersen.
Example we were traveling on I-15 and took a exit the asphalt was gouged down for re paving. My RV hit the dip so hard the RV and truck was airborne. Our KitchenAid mixmaster always sat on the kitchen slide and is very heavy it went from it's place to the island made a mark on the Corian and then proceeded to end up on the dining table. So I guarantee if I had a Andersen and someone pulled the handle the RV would have become dislodged!
IMHO a BIG shortcoming of the Andersen is the inability to be able to lock the rV to the hitch.
โMar-16-2016 05:08 PM
minnow wrote:The point was that he is using an Anderson hitch that was given to him by Anderson, not one that he purchased to replace the one that was damaged. So whether he would have bought another one is debatable, i.e. a moot point.fj12ryder wrote:
...
As far as the guy now using the upgraded design, I believe he was given that one by Anderson. I don't think he went out and bought it. He had purchased the aluminum one after using the steel one and then it was damaged. Anderson replaced the damaged unit with the new design. Whether he would have bought another Anderson is moot at this point.
If the person whose hitch was damaged is now still using the Andersen, it's far from a moot point.
โMar-16-2016 04:54 PM
Cummins12V98 wrote:
Imagine the bed of the truck is not there for a minute. With the RV hooked up what does the hitch do???? It would move forward when braking and backward when accelerating. and both directions when hitting a bridge. The FACT is the BED of the truck is supporting the weight that is applied to the Andersen hitch!
โMar-16-2016 04:38 PM
โMar-16-2016 04:36 PM
fj12ryder wrote:
...
As far as the guy now using the upgraded design, I believe he was given that one by Anderson. I don't think he went out and bought it. He had purchased the aluminum one after using the steel one and then it was damaged. Anderson replaced the damaged unit with the new design. Whether he would have bought another Anderson is moot at this point.
โMar-16-2016 04:32 PM
laknox wrote:Cummins12V98 wrote:N-Trouble wrote:
What does locking the RV to the hitch accomplish?
It will keep someone from pulling the handle and have the possibility of the RV disconnecting from the hitch. Yes it can and has happened.
Don't see how that could happen with a ball hitch, unless it's unlatched and you hit a =massive= bump or pot hole, enough to lift the entire rig off the roadway. You don't back into an Andersen like a FW, you drop the pin box ON the ball, just as you do with a GN trailer.
Lyle
โMar-16-2016 01:15 PM
WTP-GC wrote:
The detractors talk about the "crush test" being a non-real world demonstration. I would heartily disagree with such a notion. The structural support is derived from 4 legs that travel from the center point (of the load) to each corner in an angled orientation. When the hydraulic ram compresses the center point, it initially places all 4 legs in a combination of compression, tension and sheer. Once any single leg fails, it begins to deform, which immediately places the other 3 legs in more tension and sheer. Because this pressure is directly downward, the applied forces are greater.
If the legs were straight horizontal or vertical, then the crush test would be completely useless.
Transfer that thinking to a real-world application. In a fore-aft force situation, 2 legs will be placed in tension and the opposite 2 legs will be placed in compression. Where one set of legs of pushing, the other set is pulling. The sheer force is more limited in this scenario. With the crimped end design of the legs, this could mean the hitch may take more fore-aft pressure than what the crush test shows. Also, since the legs are angled, they're getting less variation in forces with fore-aft movement present.
A test of fore-aft pressures might not yield the same results of the crush test. Since no one knows the answer, nor are we privied to any calculations, we're just as well to consider that it may take more force just as easily as we should consider it to take less force. But I contend that the limiting factor in such a scenario will be the rail system or the gooseneck ball, or other sheer connections. My hitch clearly states a 24,000# limit and 4,500# tongue limit. If the engineers of this hitch are wrong, then Andersen stands the chance of being sued into oblivion.
Yes, Andersen has redesigned their hitches (typical product improvement), and they've yet to recall any previous generations nor issue any revised limitations. I'm inclined to listen to them more than internet forum contributions. Yes, some products will inherently break, fail, or otherwise be unsatisfactory. But no other hitch manufacturer (B & W, Reese, PullRite, etc.) can ever make the claim that 100% of their products are free of defect.
โMar-16-2016 01:08 PM
fj12ryder wrote:
Seems to me that that if what you're thinking were applicable, then it should have shown there would be problems with a panic stop and lots of weight shift to the hitch. That should have resulted in a design change before now perhaps.
โMar-16-2016 12:26 PM
โMar-16-2016 12:16 PM
ramgunner wrote:
I agree about the crush test. It shows that it can hold the pin weight, but does not show how well it can handle front/back stresses that will come up in a real-world situation like a panic stop.
โMar-16-2016 12:03 PM
Cummins12V98 wrote:
"In a fore-aft force situation, 2 legs will be placed in tension and the opposite 2 legs will be placed in compression."
I would agree if the 4 legs were on a solid platform and could not move but the fact is the Ultimate hitch does move fore and aft.
I am wondering if all they did was use the crush test to determine how they rated their hitch???
I do like that I have gone from being a "BASHER" to a "DETRACTOR" :B
โMar-16-2016 11:02 AM
Cummins12V98 wrote:N-Trouble wrote:
What does locking the RV to the hitch accomplish?
It will keep someone from pulling the handle and have the possibility of the RV disconnecting from the hitch. Yes it can and has happened.