|
|
|
|
|
|
this may sound stupid but can you cut and shorten a anti roll bar? i understand why it would etc but just making sure as i cant find a ideal size one for my car cheers
|
| |
|
|
|
|
Seth
South East
MorrisOxford TriumphMirald HillmanMinx BorgwardIsabellaCombi
Posts: 15,538
|
|
|
|
|
Sounds like a bad idea to me, for the same reason you wouldn't weld a coil or leaf spring.
|
| |
Follow your dreams or you might as well be a vegetable. |
|
|
|
|
|
|
|
Simple answer is no - not safely / permanently. An antiroll bar is made from spring steel so heat will alter it's properties and it'd probably snap next to the weld.
Paul H
|
| |
|
|
|
|
|
|
|
|
yeah that was my thought too no worries
|
| |
|
|
|
|
|
|
|
|
I wonder if somewhere that retempers leaf springs might be able to modify an existing antiroll bar for you ?
Paul h
|
| |
|
|
Copey
Posted a lot
Posts: 2,845
|
|
|
|
|
is it viable to run compression struts rather than an ARB?
also if youre after a narrow ARB look at a Granada rear ARB they are pretty narrow so may actually work out well?
|
| |
1990 Ford Sierra Sapphire GLSi with 2.0 Zetec
1985 Ford Capri 3.0 (was a 2.0 Laser originally)
|
|
froggy
Posted a lot
Posts: 1,099
|
|
|
|
|
I made my own using the ends of an old bar and a length of cds tube in the middle slid over the ends of the old bar to lengthen it . No issues
|
| |
|
|
sowen
Club Retro Rides Member
Posts: 2,245
Club RR Member Number: 24
|
can you weld a anti roll bar?sowen
@sowen
Club Retro Rides Member 24
|
|
|
Maybe worth contacting Coilsprings Ltd, they said a few months ago to me that they were looking into manufacturing custom anti roll bars in addition to the custom springs they already manufacture  |
| |
|
|
|
|
|
|
|
|
Yes you can but you have to do it properly, pug 206 arb's are factory welded on one side, but it depends largely on the application, need moar info!!
|
| |
|
|
|
|
|
|
|
Sounds like a bad idea to me, for the same reason you wouldn't weld a coil or leaf spring. I actually knew someone once who did weld a coilspring, two in fact, on a nova, and had no issues. But I think he's in prison now. Best place for him too. I was reading a feature on Autspeed the other day about making ARB's, I suppose it depends how complicated the shape needs to be as to whether its do-able. |
| |
R.S. Autotech. Servicing/Repairs/Diagnostics.
|
|
|
|
|
|
|
|
|
|
I'm sure my neighbour whos son used to do stock car racing used to weld extra coils to Novas, obviously different usage, but theyve got to be strong for that
|
| |
|
|
Rich G
Posted a lot
Keyboard Worrier
Posts: 1,059
|
|
|
|
Had one made for my 105E with modified suspension several years ago by Nick Butler at Auto Imagination. Can't remember how much it cost but it was less than an arm and leg! |
| |
|
|
|
|
|
|
|
|
its for a vauxhall viva HA with a 1600 crossflow, front ARB but have just bought the pop browns strenghened leaf spring. i was look at MX5 arb as there simple all i would need to do is shorten the width? ill check out coil springs ltd thanks alot guys sorry for the late rreply
|
| |
|
|
10mpg
Club Retro Rides Member
Posts: 4,253
Club RR Member Number: 204
|
can you weld a anti roll bar?10mpg
@10mpg
Club Retro Rides Member 204
|
Jun 10, 2013 21:24:24 GMT
|
|
ARB's don't have to be made out of spring steel, and many aren't, the amount of 'twist' placed on them in must cars normal suspension movement is tiny per unit area, and doesnt even approach plastic deformation of the metal, I've made several for custom installs out of 1040 (medium grade mild carbon steel) and 4130 (high tensile) iirc the 1040 was fine and cost peanuts, the levers were tig welded on each end with no ill effects after many races..
I wouldn't shorten one by welding in the middle as it will effect the rate hugely and the differences in hardness and malleability will put lots of stress on the welded area, if you were to fillet or sleeve the joint it'd work fine but again would effect the rate hugely. If I had to do it I would cut one end of and weld right at the end with a massive chamfer, root and cap weld and then sleeve the joint.
|
| |
The Internet, like all tools, if used improperly, can make a complete bo**cks of even the simplest jobs...
|
|
|
|
|
Jun 16, 2013 16:01:40 GMT
|
its for a vauxhall viva HA with a 1600 crossflow, front ARB but have just bought the pop browns strenghened leaf spring. I was look at MX5 arb as there simple all I would need to do is shorten the width? ill check out coil springs ltd thanks alot guys sorry for the late rreply do NOT trust coilsprings! Unless you like wasting money, getting ripped off or actually want them to make something useless and wrong. |
| |
|
|
sowen
Club Retro Rides Member
Posts: 2,245
Club RR Member Number: 24
|
can you weld a anti roll bar?sowen
@sowen
Club Retro Rides Member 24
|
Jun 16, 2013 17:11:41 GMT
|
do NOT trust coilsprings! Unless you like wasting money, getting ripped off or actually want them to make something useless and wrong. Could you elaborate on why? |
| |
|
|
|
|
|
Jun 16, 2013 17:37:45 GMT
|
|
Its too long a tale to tell on the phone, but suffice it to say they had zero interest in correspondence once they had received payment, promised to make one off springs to required spec but once they had been paid decided to compress standard springs and pass those off instead. Legal whatnot ensued, I am still out a great deal of money and I am not alone in having been defrauded by this most untrustworthy company.
|
| |
|
|
|
|
|
Jun 20, 2013 16:52:24 GMT
|
ARB's don't have to be made out of spring steel, and many aren't, the amount of 'twist' placed on them in must cars normal suspension movement is tiny per unit area, and doesnt even approach plastic deformation of the metal, I've made several for custom installs out of 1040 (medium grade mild carbon steel) and 4130 (high tensile) iirc the 1040 was fine and cost peanuts, the levers were tig welded on each end with no ill effects after many races.. WHS ^^ Pretty easy to calculate just how stiff an ARB is once you know the material, and the thickness. www.roymech.co.uk/Useful_Tables/Torsion/Torsion.htmlThis link gives a nice list of the equations. Doesn't say how to use them - but needless to say you'd only want the solid bar equation for an ARB, and a bit of google-fu would get you some pages on what information you'd need to calculate what stiffness you would get. For most cars, just use the assumption of fairly plain mild steel (1040 is a pretty good starting point tbh) - it only tends to be the more expensive ones that use a form of spring steel (as it can be made smaller/lighter) measure the diameter, and plug the numbers in to get your forces. Then just rearrange the equations with a slightly higher stiffness, to see what diameter tube you'd need. A small change in diameter makes a LARGE difference in stiffness! |
| |
Last Edit: Jun 20, 2013 16:54:40 GMT by chairchild
You're like a crazy backyard genius! |
|
|
|
|
Jun 26, 2013 14:29:40 GMT
|
|
great stuff ive rang up a few places in bristol, and they don't seem to know/stock 1040 grade solid bar? anyway what they have is either EM8? or bristol steels where saying there grade is S2575JR??? does anyone know that grade because google doesnt?
cheers again the help is always appriciated
|
| |
|
|
RobinJI
Posted a lot
"Driven by the irony that only being shackled to the road could ever I be free"
Posts: 2,995
|
|
Jun 26, 2013 19:30:19 GMT
|
|
To be honest any reasonable grade mild will be fine. You don't want brittle tool steel, but you don't want cheap curse word riddled with impurities. The best bet's to work out the strain it'll be under at the extent of it's movement and then you can just check that you won't be over the max elongation that the material can take. Leave your self a good safety margin and it should last really well. You could use small diameter, thickish walled CDS tube rather than solid bar if you wanted, it'd end up lighter and probably be easier to weld the ends on too.
Welding it's no big deal as long as it's done sensibly. A massive number of the cars on the road at the moment use a torsion beam for their rear suspension, which is in essence a pair of trailing arms linked by a big ARB, however you look at it, it certainly flexes to the same degree as an AR and they tend to be covered in welds.
|
| |
Last Edit: Jun 26, 2013 19:35:33 GMT by RobinJI
|
|
|
|
