My Rear Tyre Carrier build up - woooh!!

[joedm]

great work so far!
A good way to do the tire mount is to cut out a triangle from some plate, then you can run metric bolts through and use lug nuts to hold it on.

Yeah I am considering the triangle...
I was trying to get an adjustable design going... with the angles in my sketch.
Maybe weld some steel to join the two angles and then have some sort of pin mechanism (similar to the towbar hitch) to make it slide forward and back.

Still thinking...

After thinking a bit..

 

[lenross1]

nice work! Can't wait to see it when it's done!

 

[ba450]

Looks good! Post some pics of the final product when you get done.

 

[joedm]

my latch arrived today.
It doesn't have the locking mechanism but I think I'll just attach something that I can padlock it shut.

here's some pics:



unfortunately I'm building a deck this w/e so it'll have to wait another week before I get back to it...

 

[rolnblok]

When the tire gets to bouncing the leverage is going to be working on the angle iron and welds where the spindle is attached on top of the angle. If by chance, those were to fail, the plastic of the bumper trim is all that is left.

A gusset or two there is almost essential in my opinion.

Additionally, since it looks like the angle and plate have been welded to the frame, an additional gusset from the frame to the angle would help reduce any twisting/bouncing movement in the angle.

 

[joedm]

When the tire gets to bouncing the leverage is going to be working on the angle iron and welds where the spindle is attached on top of the angle. If by chance, those were to fail, the plastic of the bumper trim is all that is left.

A gusset or two there is almost essential in my opinion.

Additionally, since it looks like the angle and plate have been welded to the frame, an additional gusset from the frame to the angle would help reduce any twisting/bouncing movement in the angle.

you read my mind...
after the initial mention about adding gussets I had a rethink about what I already had and how I could strength the angle and the spindle.

So, I came to the same conclusion... add a couple of gussets to the spindle.. and a couple to the angle (maybe one to stop it from flexing/twisting and one from the angle to the frame to make it more rigid).

Trust me it's already very rigid. I've tried putting the arm on extended and sitting on it. Not really the way it will be used but just to get an idea of the flex in the spindle/angle setup. nevertheless, I will be gussetting everything.

Thanks for the feedback.

 

[98 SNAKE EATER]

When the tire gets to bouncing the leverage is going to be working on the angle iron and welds where the spindle is attached on top of the angle. If by chance, those were to fail, the plastic of the bumper trim is all that is left.

Wouldn't an armrest like this take most of the weight off of the pivot arm?

That's what I have planed for mine, along with a couple of gusset plates, but figure the pivot itself shouldn't have much of a load until it's actually swung out (and I don't plan on driving it that way lol)

 

[YOTAFAN]

Wouldn't an armrest like this take most of the weight off of the pivot arm?

That's what I have planed for mine, along with a couple of gusset plates, but figure the pivot itself shouldn't have much of a load until it's actually swung out (and I don't plan on driving it that way lol)

Snake eater, where did you find that swingarm rest pictured above?

 

[98 SNAKE EATER]

Snake eater, where did you find that swingarm rest pictured above?

Clicky

 

[rolnblok]

Wouldn't an armrest like this take most of the weight off of the pivot arm?


That's what I have planed for mine, along with a couple of gusset plates, but figure the pivot itself shouldn't have much of a load until it's actually swung out (and I don't plan on driving it that way lol)

Yes to some extent it will. However, you have a 50+ pound (tire and rim) weight on a pretty long arm that will not be bouncing so much up and down but rocking back and forth. With the arm rest you have pictured, there will still be a rotational force working on the spindle welds though reduced, i.e., it will help keep it from rocking towards the rear hatch, but does nothing in the opposite direction. This rocking or twisting force still would lend me to add gussets to the spindle and angle as described earlier.

 

[pistolbob]

Sweet build. I wish I had the equiptment to do that.

 

[joedm]

oh yeah I forgot to mention in my previous posts that I do have an arm rest planned (although not in any design pics yet).

My design will include welding a section of SHS (the same size as the arm) to the bottom of the arm just where it crosses over the towbar plate (with the 4 bolts). I'll also weld a section of plate over this to overlap ontop of the towbar plate.

I'll then weld two sections of approx 6mm plate to form a sort of angle that will bolt into the towbar (sharing the same 4 bolts). The top part will fold back over the aluminium part of the bumper. This is where I will have a pad of chopping block and where the SHS will meet and sit on. This is also where I plan to attach the latch.

I've based this design off what I have seen on other carriers.
Unfortunately been real busy so haven't been able to do anything.

I might post some sketch pics up later.

EDIT: here they are:

 

[chitown40]

Wouldn't an armrest like this take most of the weight off of the pivot arm?

That's what I have planed for mine, along with a couple of gusset plates, but figure the pivot itself shouldn't have much of a load until it's actually swung out (and I don't plan on driving it that way lol)

I don't think you can fold the tailgate down with that on the rear bumper.

 

[lenross1]

 

[98 SNAKE EATER]

I don't think you can fold the tailgate down with that on the rear bumper.

Probably not, but nuthin a hacksaw can't fix

I'm actually thinking of using a hard rubber pad bolted to the top of the bumper with a slightly raised lip on the back end to prevent the arm from swinging into the tailgate

 

[Adam R]

It looks like you have an awful lot of leverage from the frame to spindle and then onto where the tire is actaully mounted.

I like my tire carriers pretty rigid, but I don't see how you can get a rigid mount by only welding to one frame trail.

Sorry to poke, but how solid is this mount turning out?

Thanks,

Adam

 

[joedm]

the mount sure feels solid as per what I've described previously.

I've actually based my design on what I have seen others have done and I've also looked at aftermarket options that all attached (using bolts) to the single frame trail and then latching to somewhere in the middle of the solid bumper.

Are there tyre carriers out there that attach to both frame trails?

From what I have observed, my mount is going to be at least as strong as or possibly stronger than those aftermarket solutions, the ones that mount onto the existing rear bumpers.

IF I were to build a brace to attach to both frame trails then I might as well go as far as building a whole new rear bar? But that's another project.

 

[chitown40]

joe,

I think your plan is pretty solid. I'm actually going to be copying yours and WildYoats' design in the coming weeks. I have all the metal collected except for the spindle and hub, which I'm mulling over two companies' products right now. Hope to get started in the next week or two.

I think if you built another system on the passenger side exactly like your driver's side carrier, you could add another type of carrier on the swingarm to hold say, water or fuel cans, and you could tie them both together. Not sure if this is a need for you, but it would add some stability (prolly not needed too much with your design) but it might be worth looking at now before you get too fancy with the center latch and support in case you look to do this in the future.

Good luck and keep up the good work.

Rob

 

[joedm]

thanks mate.

I did think of the second swing arm and that's part of the reason why my current arm extends to halfway over the tow hitch point (i.e. the centre). If I did decide to build the second arm then it should meet up in the middle.

Unfortunately I haven't had time to progress on the build. And stupid me did not cover the spindle and now there is some surface rust on it. I'll get back to it hopefully this w/e and add somemore pics.

 

[joedm]

A little progress...