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TnA's 86 Jimmy Shop Build / Product Development Thread - (Trailing Arms?!?!)

Okay, so I ended up going through every single piece of mostly used 1/4" plate I had left in my pile, and came up with just enough to squeeze out all the pieces I needed for the crossmember... One piece is actually missing a small piece of a corner just because I couldn't quite get the last piece to fit, lol.

Here she is tacked together:


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-Darren
 
Dang it, I so would have bought that vs the one that bolts to the factory uppers.

Looks so sweet. :thumb: When do those rear shock mounts hit the CAD drawings? :whistle:
 
Dang it, I so would have bought that vs the one that bolts to the factory uppers.

Looks so sweet. :thumb: When do those rear shock mounts hit the CAD drawings? :whistle:

If you decide you really want one, and this is to everyone, if you have one of my old style crossmembers already, I'll make you a little deal on one of these so you can sell the old one and not lose too much $$. However, there is nothing wrong with the old design either - I even have a three-linked and coilovered K5 running the old style crossmember as a track bar (panhard bar) mount for the link system. So far no issues even with the massive stresses put on it from that setup. Of course this new design would be even stronger in that application.

The rear shock mounts are still coming... I'm trying to get things designed as I go along with the truck, and getting the engine back in is the first thing on the list at the moment with Blazer Bash coming soon. I'd really like to get the rear shock mounts done before BB also though, since I haven't even put the truck on the ramp since the zero-lift shackle flip and now with it on the lift I am already bottoming out the shocks on droop. They didn't even bottom out on the ramp before! If there is any time at all, I really want to work on the rear bumper before BB too, but I think I might be pushing it a little too much with that.

Oh my goodness. I dont know why i want one, but i want one!

You want one because of a couple reasons!!!! Lol. You want one so you can run a track bar right now with your crossover steering to help get rid of that death wobble. You want this one because when you upgrade your front suspension to coilovers and links, this one will be beefy enough to support your track bar (panhard bar) without issue. Lastly, it's just cool, even if I do say so myself!! Hehehe.

-Darren
 
Got this far just before I left the shop today. After I tacked the whole assembly together I trial fitted it in the truck. I am happy to report that I got every nut and bolt in without any issues :) There is one hole that the bolt isn't centered in though, so I'll change that before I cut another one - it still fit but wasn't perfect. I want to get everything as close as possible on this truck since the frame seems to be as straight as I could ever expect. That way if someone else's frame is slightly different than this one in either direction it should still fit in there pretty good. I know it's asking a lot to make something this complex fit every one of these old trucks just right but I want to get it as easy to install as possible. Oh, and there are NO holes to drill for this one! Only the 4 rivets of the factory crossmember have to be ground off. Then this bolts in to the factory bolt holes and two of the rivet holes!


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-Darren
 
That is awesome work! I started to wonder why you got rid of the removeability of the center,,, then you showed the bottom view!! I need a bunch of money to send your way for some of this cool stuff! On the rear bumper subject, could you let out a few peeks? I have a buddy who wants a rear bumper for his '90 so that he can carry his spare and gas can.
 
You know, your already at the point that you could also build one more "cross member", the sway bar cross member. A nice replacement the integrates a steering brace/reinforcement into it and can tie into the winch mount.
 
That is awesome work! I started to wonder why you got rid of the removeability of the center,,, then you showed the bottom view!! I need a bunch of money to send your way for some of this cool stuff! On the rear bumper subject, could you let out a few peeks? I have a buddy who wants a rear bumper for his '90 so that he can carry his spare and gas can.

Thanks man! I definitely wasn't going to get rid of the removable center section for this one, I just made it a little easier to build and a little more stable once together, so the design has changed. Still removable though!
The rear bumper is getting designed in my head at the moment so no sneak peeks just yet. There isn't anything in the computer to show you guys. I'm currently thinking that it will be a heavy duty bracket system and winch mount like the front, with a bolt-on outer "shell", probably three piece also. That being said, it will probably come standard with no tire carrier. If I do make an add-on tire carrier (which I do plan on) it will most likely be the "stinger" type that hinges down towards the ground in a similar fashion to the tailgate. Kinda similar to the way they do it for a lot of Jeeps, that would end up giving you a step (the tire) to get into the back of your rig too!

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You know, your already at the point that you could also build one more "cross member", the sway bar cross member. A nice replacement the integrates a steering brace/reinforcement into it and can tie into the winch mount.

Damn! I've been talking about building a kick-ass steering box brace with a buddy of mine for some time now, and I told him that the only way I'd do it would be to build a complete replacement crossmember that integrated the brace into it. I was hoping for it to be a little bit of a surprise to all you guys when I could finally get some drawings together, but since you suggested it here, I guess I'll let you all know that it will be forthcoming in a little while!!!!!!! Gold Star for you!!


-Darren
 
When are you going to throw away that slush box and reinstall the SM465 it is suppose to have?

Martin
 
I may try to make my own, but if I were to buy one I would want it to cut off the rear quarters at the line below the light until the week well, and mount back to the frame for extra support.
 
The rear bumper is getting designed in my head at the moment so no sneak peeks just yet. There isn't anything in the computer to show you guys. I'm currently thinking that it will be a heavy duty bracket system and winch mount like the front, with a bolt-on outer "shell", probably three piece also. That being said, it will probably come standard with no tire carrier. If I do make an add-on tire carrier (which I do plan on) it will most likely be the "stinger" type that hinges down towards the ground in a similar fashion to the tailgate. Kinda similar to the way they do it for a lot of Jeeps, that would end up giving you a step (the tire) to get into the back of your rig too!

Very interested to see what you come up with here. I have wanted to do a rear bumper with a swing down for a long time, but havn't had the time. If you look at what Blazen Offroad use to make (before they went out of business), that's exactly what I wanted. That design might give you some good ideas as you are in the design stage. When you get something drawn up on the computer, post it up!!

Oh, and where in CO are you located? I live in Castle Rock, south of Denver.
 
When are you going to throw away that slush box and reinstall the SM465 it is suppose to have?

Martin


Hey Martin!
I used to be all for manual's in trucks too, pretty vehemently I might add. That is until I came to CO and started wheeling some more serious rock trails. When you are twisted up with only three wheels on the ground and on a near vertical climb, it's a heck of alot easier to give it a little gas and then let off the brake ever so slightly to try and get as much forward traction as possible on start-up (by being super-smooth). After working the clutch/gas/brake with only two feet on a trail, I have seriously reconsidered my thoughts on having to have a manual, lol. I know, hand throttles and such can help, but on the more serious stuff, a slushbox is the only way to fly!
This truck isn't going to be a serious trail rig right away, but after I get some lighter-trail style products developed, it will eventually go down that road, so to speak. The auto shall stay in this one!
I would completely agree with you if it was going to be a show-only truck, a street truck, a mud truck, or even a mild trail truck, but in the end I want to be able to go full-on with it, tubed and on coilovers.

I may try to make my own, but if I were to buy one I would want it to cut off the rear quarters at the line below the light until the week well, and mount back to the frame for extra support.

Well, as I have two designs for the front, I would like to end up with two designs for the rear too. The first one will be a more full-bodied bumper like the front winch bumper. The second (when I get to it) will be a much more high-clearance version more like my winch cradle for the front. I'm not sure on timing yet, but I am certainly thinking about it!

Very interested to see what you come up with here. I have wanted to do a rear bumper with a swing down for a long time, but havn't had the time. If you look at what Blazen Offroad use to make (before they went out of business), that's exactly what I wanted. That design might give you some good ideas as you are in the design stage. When you get something drawn up on the computer, post it up!!

Oh, and where in CO are you located? I live in Castle Rock, south of Denver.

I'll check that one out for sure. I have some good ideas floating around in my head, but I'm always open to looking at different ideas too!
The shop is currently in Greeley, CO. I frequently do work (through my other job, installing auto shop service equipment) down in the Castle Rock area and fairly often all the way down CO Springs. We also travel all the way up into Scottsbluff, NE about once a month! Next week I have a two or three day job in Cortez, CO too (only about 450 miles, one way!!!!!!) It's kinda a pain in the butt, but at the same time it's pretty cool that I get to go see a bunch of places I wouldn't normally head to.

-Darren
 
I'll check that one out for sure. I have some good ideas floating around in my head, but I'm always open to looking at different ideas too!
The shop is currently in Greeley, CO. I frequently do work (through my other job, installing auto shop service equipment) down in the Castle Rock area and fairly often all the way down CO Springs. We also travel all the way up into Scottsbluff, NE about once a month! Next week I have a two or three day job in Cortez, CO too (only about 450 miles, one way!!!!!!) It's kinda a pain in the butt, but at the same time it's pretty cool that I get to go see a bunch of places I wouldn't normally head to.

-Darren

Nice. My brother goes down to Cortez just about every year to hunt mule deer. Well, like I said, I'm very eager to see what you come up with. I think something like what you did for smokinthehippies on his front bumper with the wings, but also include a tubular swing down carrier would be freaking sick :whistle:. Just saying :D
 
I may try to make my own, but if I were to buy one I would want it to cut off the rear quarters at the line below the light until the week well, and mount back to the frame for extra support.
I agree with Rich on losing some of the quarter panel. I vote for the high clearance bumper first as you could build it, pull it off, sell it, then do the one to match the front that you have on this truck. (Saves a little time on installation? Right??):whistle:
 
Nice. My brother goes down to Cortez just about every year to hunt mule deer. Well, like I said, I'm very eager to see what you come up with. I think something like what you did for smokinthehippies on his front bumper with the wings, but also include a tubular swing down carrier would be freaking sick :whistle:. Just saying :D

I agree with Rich on losing some of the quarter panel. I vote for the high clearance bumper first as you could build it, pull it off, sell it, then do the one to match the front that you have on this truck. (Saves a little time on installation? Right??):whistle:

Yeah!
Definitely trimmed high and tight to the body, but I don't need no tire gate since mine is a pickup.
I think you should do that one first since you did the winch cradle first. It's only right
:)
 
I agree with Rich on losing some of the quarter panel. I vote for the high clearance bumper first as you could build it, pull it off, sell it, then do the one to match the front that you have on this truck. (Saves a little time on installation? Right??):whistle:

Yeah!
Definitely trimmed high and tight to the body, but I don't need no tire gate since mine is a pickup.
I think you should do that one first since you did the winch cradle first. It's only right
:)


Mmmm, okay... So you guys are saying that I should trim the body, build a high clearance bumper based on that, then weld the body back together to build a full version?? Lol, j/k, sort of. I know I could build something assuming a reasonable trim line and not necessarily actually trim the panels, but it would be so much easier if it were trimmed... Lol. Seems kinda like putting the carriage before the horse, so to speak. I'll consider doing that though, as it seems like there are a number of members on here that would prefer it that way.
So if I do decide to start a high-clearance version first, do I make it super high clearance with no winch, or just high clearance at the outsides with winch mount in the center? I really don't want to have to design three separate bumpers just for the rear of a K-series, with two different mounting bracket setups for Blazer vs. truck. Seems like an awful lot of stuff to make and have on the shelf just for rear bumper designs. Would it be worth it though? I dunno??

-Darren
 
Mmmm, okay... So you guys are saying that I should trim the body, build a high clearance bumper based on that, then weld the body back together to build a full version?? Lol, j/k, sort of. I know I could build something assuming a reasonable trim line and not necessarily actually trim the panels, but it would be so much easier if it were trimmed... Lol. Seems kinda like putting the carriage before the horse, so to speak. I'll consider doing that though, as it seems like there are a number of members on here that would prefer it that way.
So if I do decide to start a high-clearance version first, do I make it super high clearance with no winch, or just high clearance at the outsides with winch mount in the center? I really don't want to have to design three separate bumpers just for the rear of a K-series, with two different mounting bracket setups for Blazer vs. truck. Seems like an awful lot of stuff to make and have on the shelf just for rear bumper designs. Would it be worth it though? I dunno??

-Darren

Make a universal center section and two different wing options.

It would have to have provisions for a trailer hitch. I'm thinking about a double trailer hitch for mine, so I can tow and mount trailer hitch accessories if need be. (Though that would be getting towards feature creep). How could you do winch and trailer hitch?
 
Hmmm. Well obviously I know which way I vote which is as high and tight with no winch but I don't know what makes the most sense for you. As far as trimming yours I bet you could find someone fairly local to loan you a back end to abuse to save yours. I would if I was closer.
 
Make a universal center section and two different wing options.

It would have to have provisions for a trailer hitch. I'm thinking about a double trailer hitch for mine, so I can tow and mount trailer hitch accessories if need be. (Though that would be getting towards feature creep). How could you do winch and trailer hitch?

Just do the hitch and offer people a link to eBay where they sell the hitch winch mounts. Easy peasy
 

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