i really like the lines of that chassis... especially being a 4-seater. nicely done.

 

So I've got a question for some of the Ultra4 guys out there and anyone that would be involved in tech inspection.

I'm sure my build will come in over the 4400# mark so I'm building the chassis out of 2" .120 DOM with some 1.5" .120 DOM in some places. My question is if the 1.5" tubing I have in part of the design will be an issue for tech inspection? Mostly referring to the A-pillar and windshield bars. I did this mainly for better visibility, but 2" could be thrown in there if need be (although I'd rather 1.5").

Thoughts?

 

Do the pieces going to the subframe in 2" as well, preferably 2" .188 because its going to get beat up along with the rockers.

 

Good call. I'll most likely do those pieces in 2" square tube as well so it's easier to mount skins/UHMW to as well.

I would reconsider the wheelbase length. That is super long. I would suggest 106-109" if you want this to perform exceptionally well as a trail wheeler. I ran 109 and then dropped to 103 and the places I could go was night and day difference. I'm running 105 now and notice it way more stable in the higher speeds than 103. If your only going to dabble in ultra 4 I would keep it smaller and more nimble.

Keep all the main tube 2" and you will be fine for tech.

I definitely understand the shorter wheelbase, but I've gotta keep it 4-seater to keep the wife fully on-board ha. If this were strictly going to be Ultra 4, then I would make it a small 2-seater like your new bad ass rig. I don't expect to do more than one or two Ultra 4 races in this though..but if I'm building one, I might as well build it to spec just in case.

 

I would reconsider the wheelbase length. That is super long. I would suggest 106-109" if you want this to perform exceptionally well as a trail wheeler. I ran 109 and then dropped to 103 and the places I could go was night and day difference. I'm running 105 now and notice it way more stable in the higher speeds than 103. If your only going to dabble in ultra 4 I would keep it smaller and more nimble.

Keep all the main tube 2" and you will be fine for tech.

 

Chassis lines look very nice.

Not a big deal, but one thing I would change, at least from my Juggy, would be squaring off the bottom of the rear section on the cage.

Looking back, it would be much easier to add a tailgate, or fit a tote, tool box. Yours is 90*, so it might be easier than mine, which is at an angle.

 

Alright, based on some input I've made some changes to the chassis. Shortened the whole chassis up as much as I can and was able to get a shorter wheelbase for better cone-dodging. My currently rig is 112" so I think I'll like the ~109" wheelbase.

The grey tube being 2" .120 DOM, orange 1.5" .120 DOM, green is 1.5" .188 DOM, black is 2" .250 square.

 

flip the windshield V upside down /\ adds more strength in the event of a hard roll

 

whats the width on the belly?

also i'd run a 9" belly i have 10" right now. it could be a tid bit shallower.

 

Good to know. I had it at 10" on the first build, just moved it down a bit for estimating. I figure the belly will be the last thing I build, and will be attached around the time I actually throw the power train in...

For the dimensions I currently have it setup at 34" wide and 32" long.

 

I'm 28" wide for mine. It's about as narrow as you can go. The motor is offset .5" to the driver side to fit the passenger side drive shaft.

That's 28" to the outside.

 

Good to know. I'll most likely keep it where it's at for now just for versatility reasons since that part of the buggy isn't set in stone yet.

 

liking the lines of this one..

 

Got the garage all setup finally and wired up the 220. Picking up the tube for this project tomorrow.

 

Got the tube at $3.00/ft....now to see if I can make something out of this...

 

Okay, I have officially started the build yesterday. I got the two toughest pieces bent up. 5 bends and lots of rotations.

 

Looking good.

 

Got a bit more work done tonight.

Can't believe I didn't purchase this for the other cages I've done. $40 well spent.

My current welder of choice is the Ready Welder.....mainly because the Lincoln is at my brother's house currently. Plus I'm only tack-welding everything right now. I'll MIG it when all is said and done.

 

More progress made. Should make some good progress this weekend with having 5-days off.

 

Good luck man! I'll be checking this out as it moves along.

 

Looking really good dude...I'll be watching this one.

I'd try to do something a little different with your hood bars...as modeled they're creating dead nodes at the windshield base and grill top area...won't really carry much load.

 

Good call. I haven't finalized the hood/engine cage yet but I'll definitely keep that in mind. I think I was just putting that there for visualization.

 

great start

 

Really like the lines. You're moving right along.

 

More progress today...

 

No work on the chassis today, just family time. Happy Thanksgiving all.

 

Not much left for the cab

 

Just about ready to fully weld the cab. Should finish the last few supports tonight. Next step after that will be picking up an engine/trans combo and start fitting it.

 

Definitely diggin the lines of this thing.

You're movin quick!