Totem Posted August 27, 2016 Share Posted August 27, 2016 Anyone try the TR60S skyjackers on their rigs? Quote Link to comment Share on other sites More sharing options...
zero Posted August 27, 2016 Share Posted August 27, 2016 Can't say I've tried them. Can't say I ever would either unless they made a progressive-rate spring actually designed for a motorhome that is near max GVWR all the time. Toyota cab & chassis trucks came new with progressive-rate springs but were never designed for full-time max loads so the progressive-part of the design is abrogated. I don't see how that would be any different with the Skyjackers unless they can be ordered custom-built. Quote Link to comment Share on other sites More sharing options...
Derek up North Posted August 27, 2016 Share Posted August 27, 2016 Never heard of them. Quote Link to comment Share on other sites More sharing options...
Totem Posted August 28, 2016 Author Share Posted August 28, 2016 1 hour ago, jdemaris said: Can't say I've tried them. Can't say I ever would either unless they made a progressive-rate spring actually designed for a motorhome that is near max GVWR all the time. Toyota cab & chassis trucks came new with progressive-rate springs but were never designed for full-time max loads so the progressive-part of the design is abrogated. I don't see how that would be any different with the Skyjackers unless they can be ordered custom-built. Constructed As Progressive Multileaf Packs Load Capacity Will Be Equal or Greater Than OE Made With American Steel Limited Lifetime Warranty Quote Link to comment Share on other sites More sharing options...
zero Posted August 28, 2016 Share Posted August 28, 2016 Yes, and what makes their "progressive multi-leaf pack" any different or better then the OEM "progressive multi-leaf pack?" There IS no "progressive" once an RV coach is sitting on the stack. Looks to me it's just a stock spring stack with a custom arch to sit higher (when not in progressive-mode). Quote Link to comment Share on other sites More sharing options...
WME Posted August 28, 2016 Share Posted August 28, 2016 This is a lot of info and a slog to read, but the bottom line is the spring MFG. says that progressive springs are not for sustained heavy loads. But they do make a proper spring for this use. Backs up what JDE just wrote. http://www.atlassuspension.com/index.html Quote Link to comment Share on other sites More sharing options...
Totem Posted August 28, 2016 Author Share Posted August 28, 2016 What is the proper spring then? Did they list its model no.? I don't see it Quote Link to comment Share on other sites More sharing options...
WME Posted August 28, 2016 Share Posted August 28, 2016 IF you call, they will build it........ Quote Link to comment Share on other sites More sharing options...
zero Posted August 28, 2016 Share Posted August 28, 2016 2 hours ago, Totem said: What is the proper spring then? Did they list its model no.? I don't see it I wonder if they would be willing to build them? What you are asking for is a progressive spring-pack that in "normal", not "overload" mode - when calibrated for a Toyota already at its max GVWR. If anybody wants such a spring assembly, it's not that difficult to build your own. Just buy a new set of OEM style springs and then some extra, pre-arched leafs to add to the stack. It has to be Toyota (or Mazda) specific. No other truck that I know of uses that odd-ball spring width. Quote Link to comment Share on other sites More sharing options...
Back East Don Posted August 28, 2016 Share Posted August 28, 2016 I miss the days of old where we had a couple of spring shops and even a good radiator repair place. All the old timers retired and those kinds of businesses are no longer common place. Quote Link to comment Share on other sites More sharing options...
WME Posted August 28, 2016 Share Posted August 28, 2016 These guy are not a spring shop, they are a spring MFG. They even can retemper a spring after they re-arch it. CALL if you need springs, just remember they are spring guys so have your ducks lined up before you call. Number of leafs, width, thickness of the spring leaf and spring pack. Quote Link to comment Share on other sites More sharing options...
5Toyota Posted August 28, 2016 Share Posted August 28, 2016 still got one of those old time shops here make springs u bolts rebuild heavy truck front ends . been on the same spot since 1915. complete with an enormous old time forge. Quote Link to comment Share on other sites More sharing options...
Totem Posted August 29, 2016 Author Share Posted August 29, 2016 (edited) So the prevailing idea here is that the skyjackers would be ok but would lose arch as the oems would yes? The question I now have is how long did that take to happen? Mine have been flat since I got it but at one time I'm assuming they had arch.. Curious how long that time was. Edited August 29, 2016 by Totem Quote Link to comment Share on other sites More sharing options...
Back East Don Posted August 29, 2016 Share Posted August 29, 2016 For those who may want to dive in deep here is a PDF on Leaf spring Design and Calculation Quote Link to comment Share on other sites More sharing options...
WME Posted August 29, 2016 Share Posted August 29, 2016 Deep?? there ain't no bottom to that paper. Quote Link to comment Share on other sites More sharing options...
Back East Don Posted August 29, 2016 Share Posted August 29, 2016 7 hours ago, WME said: Deep?? there ain't no bottom to that paper. There are days where google is an incredible time suck. Not that it was the most comprehensive I found either. There was another paper that was longer and far harder to read. I got tired a few pages in and just decided to give up. We have reached the saturation point where almost any topic can be found online at any given level of discussion. If artificial intelligence can progress enough to be able to gather and then create a synopsis on demand, we will have arrived at a Star Trek level of just ask the computer a question and get an answer. Right now all my phone does is read wikipedia articles to me when I ask it something substantial. Quote Link to comment Share on other sites More sharing options...
Totem Posted August 29, 2016 Author Share Posted August 29, 2016 yikes $1000+ on those customs WME.. Im thinking I'll try the skyjacker with possible addition of hellwig helpers? I'd still be at $500 with that Quote Link to comment Share on other sites More sharing options...
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