Topic of Discussion TOD: Roll cage design and building
- Thread starter Greg
- Start date
RockMonkey
Suddenly Enthusiastic
There is no return. You open the valve just like any other bottle jack, and push it back in. It's not hard, but I would like to make a knob for it so I don't have to use the jack handle.
RockMonkey
Suddenly Enthusiastic
BY the cylinder? I just cut a piece of tube to rotate freely around the bolt at the end (the same bolt that the handle rotates around), and welded the square tube to that.
Or were you talking about where the end of the ram attaches to the moving bender arm?
Not the cleanest fabrication I've ever done, just threw it together quick and dirty to get it working.
Attachments
RockMonkey
Suddenly Enthusiastic
I did not modify or weld to any original piece of the bender. This is 100% bolt-on. I could return this back to manual operation in about 5 minutes if I needed to.
Corban_White
Well-Known Member
- Location
- Payson, AZ
Nice job RockMonkey!
Bob, that looks like a great set of pictoral instructions except for in the middle pic where it says to cit the 2 spacers shorter so they rotate freely. Don't do it! they are machined spacers that need to be kept the same length so the arms stay parallel. Other than that looks like a great plan. I wish I had done as it says in the first pic so my bender arms would close all the way. It still works but I have to use a different hole for the backing block and I don't get as much usable stroke out of the ram.
Bob, that looks like a great set of pictoral instructions except for in the middle pic where it says to cit the 2 spacers shorter so they rotate freely. Don't do it! they are machined spacers that need to be kept the same length so the arms stay parallel. Other than that looks like a great plan. I wish I had done as it says in the first pic so my bender arms would close all the way. It still works but I have to use a different hole for the backing block and I don't get as much usable stroke out of the ram.
ozzyfj40
Member
- Location
- eagle mountain,ut
ordered one from copperhead and it is sagy and none of the holes were the right size.had to build supports for it. guess its a good place to start. also using the hf ram and it doesnt pump very well?
UNSTUCK
But stuck more often.
Tell us about your compressor.
RockMonkey
Suddenly Enthusiastic
What PSI are you putting through it? It requires 110-120.
ozzyfj40
Member
- Location
- eagle mountain,ut
ya i need bigger one .its a little 20 gal.
ozzyfj40
Member
- Location
- eagle mountain,ut
what size compressor is going to run at 110-120 psi?
looking to buy one.
any info would be great.
looking to buy one.
any info would be great.
RockMonkey
Suddenly Enthusiastic
This is the compressor I have. You could certainly use this cylinder with a smaller compressor, but this is the one that's worked so well with this bender setup for me.
http://www.amazon.com/Campbell-Hausfeld-VT6275-Horsepower-Compressor/dp/B0009KNAA8
You can get it at Lowes for less $$$.
ozzyfj40
Member
- Location
- eagle mountain,ut
thanks, that is the one i was looking at.
i have a little 20gal husky.
it hardly moves the ram. do i need to add hydro fluid?
on the ram it says to use in vertical position only.
i have a little 20gal husky.
it hardly moves the ram. do i need to add hydro fluid?
on the ram it says to use in vertical position only.
RockMonkey
Suddenly Enthusiastic
It all comes as an assembled unit from HF.
ozzyfj40
Member
- Location
- eagle mountain,ut
looks like i had a bad ram
returned it.
works much nicer now.
returned it.
works much nicer now.
brokejeep
Registered User
- Location
- Clearfield, Utah
Is it possible to stretch a cage??? I got my hands on a poison spyder cj7 cage and I have a scrambler. Is it possible to add length to the tubing or is it better to get a different piece made. I was thinking I could get a smaller diameter DOM and put it inside the tubing then cover that with the original tubing. I have seen this done on motorcycle frame to stretch the frame.
RockMonkey
Suddenly Enthusiastic
Sure. You can do it. Many cages and buggys have joints like this in them. The halo on my XJ has one of these. Most people drill a couple holes and put in some plug welds.
brokejeep
Registered User
- Location
- Clearfield, Utah
My next question is where to buy the DOM??? or can I use hrew
sixstringsteve
Well-Known Member
- Location
- UT
I went over to metalmart in Lehi, and they have something that's a seamless tube like DOM, but it isn't officially stamped DOM. It's $2 a foot instead of $7-9 a foot (just a guestimate) They say they recommend it for roll cages all the time. Does anyone know what I'm talking about? They just call it tubing. I assume it's going to be better than HREW.
I realize that DOM refers to a process, not a brand, which makes me wonder how they get this tubing if it's not drawn over mandrel. Any light on the subject would be fantastic.
I realize that DOM refers to a process, not a brand, which makes me wonder how they get this tubing if it's not drawn over mandrel. Any light on the subject would be fantastic.