atreis wrote:
Having read the other threads, it seems quite likely to me the sources are actual users of the hitch. However, what's not clear is how many of these users tried to get 100% FALR. There are several people in the other threads that admit that they don't try to achieve that because they don't need/want to. That doesn't mean they couldn't. It also doesn't mean that they could. It's inconclusive. Unfortunately, there's no independent test agency for hitches, which is really a shame.
Thanks for providing some constructive comments.
You're correct -- there is no way to know how many tried to get 100%. Some of them did. I don't know about the others.
I do know that Andersen rates their WDH for a tongue weight capacity of 1400#. With that tongue weight, a WDH needs to restore about 600# to the front axle to achieve 100% FALR. With the OP's estimated 800# TW, the WDH needs to restore nearly 400# for 100% FALR.
From the following Appendix of Andersen user posts, we can read the following:
"renojack" reported the maximum load restoration value of 200# with 43% FALR. He stated, "--- I tightened the chains/ compression springs from the inadequate 7 threads to 9 threads (about all I could get with the socket provided by Anderson). It seemed that even if I had a deeper socket I could not have gotten more compression."
"AirHeadsRus" was able to achieve 160# and 57% with 10 threads. He stated, "That was very close to the limit that I could adjust."
"eartha" got 63% and 150# restored. He stated, "I found I could not hold the hitch on the frame with the clamps. I had to drill into the frame to hold it. I really liked the idea of the ball not rotating on the hitch. The hitch is well built and looks good. I wanted it to work for me, but the weight distribution is the killer."
"CHD Dad" achieved 160# and 50% at 1/2" compression. He stated, "I dont believe I can get any more compression without compromising the bushing."
I think it's fair to say that all of the above wanted to have more load restoration, but were only able to achieve values ranging from 150-200# versus the approximately 400# the OP would need for 100% FALR.
As for the others -- all I can say is the user reports all show less than 200# of load restoration.
Ron
APPENDIX OF ANDERSEN USER WD REPORTS
zues
http://www.rv.net/forum/index.cfm/fuseaction/thread/tid/25717515/gotomsg/25860978.cfm#258609782009 Ram Mega Cab diesel. 43% with est 600# TW. WD objective not indicated.
Bruce H.
http://www.rv.net/forum/index.cfm/fuseaction/thread/tid/25717515/gotomsg/25878691.cfm#258786912006 Honda Pilot. 90% at 1/4" compression with 400# TW.
gallifrey
http://www.rv.net/forum/index.cfm/fuseaction/thread/tid/25717515/gotomsg/25916590.cfm#259165902005 Nissan Armada. 75% at 9 threads with 900# est TW. "---hooking up with 9 threads seems to really compress the springs, probably more than they should---"
renojack
http://www.rv.net/forum/index.cfm/fuseaction/thread/tid/25717515/gotomsg/26103569.cfm#261035692005 Suburban 2500. 43% at 9 threads with 960# TW. "--- I tightened the chains/ compression springs from the inadequate 7 threads to 9 threads (about all I could get with the socket provided by Anderson). It seemed that even if I had a deeper socket I could not have gotten more compression."
hbillsmith
http://www.rv.net/forum/index.cfm/fuseaction/thread/tid/26309849.cfm2010 Mercedes GL450. 54% with 600# TW. WD objective not indicated.
housedad
http://www.rv.net/forum/index.cfm/fuseaction/thread/tid/26354611/gotomsg/26382668.cfm#263826682005 Excursion. "---getting close to 50% at 1/2" compression with 1250# TW. No further data.
airheadsrus
http://www.airforums.com/forums/f464/the-andersen-wd-hitch-user-thread-92131-14.html#post1161759Silverado 1500. 50% at 7 threads with 800# TW.
http://www.airforums.com/forums/f464/the-andersen-wd-hitch-user-thread-92131-77.html#post1231872Silverado 1500. 36% at 9 threads and 57% at ten threads with 800# TW. ""At 10 threads showing, got it within 100 pounds at 3400. That was very close to the limit that I could adjust." (photo of compressed bushing)
SteveH
http://www.airforums.com/forums/f464/the-andersen-wd-hitch-user-thread-92131-48.html#post1204193FJ Cruiser. Est 100% at 400# TW.
HowieE
http://www.airforums.com/forums/f464/the-andersen-wd-hitch-user-thread-92131-67.html#post12291142004 Excursion. 40% with 670# TW.
eartha
http://www.rv.net/forum/index.cfm/fuseaction/thread/tid/26561155/gotomsg/26562284.cfm#26562284http://www.rv.net/forum/index.cfm/fuseaction/thread/tid/26561155/gotomsg/26567836.cfm#265678362005 Ford F-150. 63% with 560# TW. "I found I could not hold the hitch on the frame with the clamps.
I had to drill into the frame to hold it. I really liked the idea of the ball not rotating on the hitch.
The hitch is well built and looks good. I wanted it to work for me, but the weight distribution is the killer."
CHD Dad
http://www.rv.net/forum/index.cfm/fuseaction/thread/tid/26817828.cfm2010 Tundra. 19% at 3/16" compression and 50% at 1/2" with 800# TW.
" I dont believe I can get any more compression without compromising the bushing."
babies_dadeo
http://www.rv.net/forum/index.cfm/fuseaction/thread/tid/27095484.cfmhttp://www.rv.net/forum/index.cfm/fuseaction/thread/tid/27095484/gotomsg/27224954.cfm#272249542013 Sierra Duramax 2500HD. 50% at 1/4" compression with 990# TW.
5/12/2013 "If you are in a situation where you require a hitch that will remove a substantial amount of weight from the drive axel, this is just not the right hitch for ya."
idroba
http://www.airforums.com/forums/f464/the-andersen-wd-hitch-user-thread-92131-160.html#post13335612012 Grand Cherokee. 33% at 6 threads and 53% at 8 threads with 680# TW.
"The hitch is capable of doing more distribution, I simply did not test it at higher levels.
The bushings now show a very slight bulge when 8 threads show on the adjustment."
PHS79
http://www.rv.net/forum/index.cfm/fuseaction/thread/tid/25717515/gotomsg/26988625.cfm#269886252004 F-150. 50% at 1/4" compression with 700# TW.
OTHER POSTS ON INABILITY TO DISTRIBUTE LOAD
jujububbajr
http://www.rv.net/forum/index.cfm/fuseaction/thread/tid/26694630/gotomsg/26828948.cfm#26828948CHD Dad
http://www.rv.net/forum/index.cfm/fuseaction/thread/tid/26694630/gotomsg/26864568.cfm#26864568dkottum
http://www.airforums.com/forums/f464/the-andersen-wd-hitch-user-thread-92131-124.html#post1293742