pjavon
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| posted on 1/11/06 at 07:57 PM |
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anti roll bars
just bought some caterham anti roll bars off ebay with the intension of fitting them to my tiger avon. anyone tried welding/ heating to alter the
bends in anti-roll bars, does it make them brittle or any other problems i might find if i do so.
Thanks in advance Paul
Always keep a big hammer and a condom in your toolbox, if you can't fix it with the hammer
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Gav
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| posted on 1/11/06 at 08:28 PM |
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Changing the bends of the bar and altering the leverage points i imagine would change the intended properties of the bar.
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nitram38
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| posted on 1/11/06 at 08:30 PM |
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I would cold bend them if I were you, otherwise the heat will alter the sprung characteristics.
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Uphill Racer
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| posted on 1/11/06 at 10:55 PM |
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Yes Gav it will alter the bars resistance, but doe's that matter?
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zetec7
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| posted on 2/11/06 at 02:28 AM |
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Yes, it DOES matter! When you heat spring-tempered steel, it changes the alignment of the crystalline structure of the steel, most likely to mild
steel. This is fine, but when you twist it (as intended while in use...) it will likely stay twisted. You can certainly do this, but you'll
have to have a spring shop re-temper it afterwards. It's the same as softening a coil spring - it'll turn inot someting akin to a coiled
paper clip...no spring action. 
http://www.freewebs.com/zetec7/
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Uphill Racer
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| posted on 2/11/06 at 12:38 PM |
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Sorry if I didnot explain very well, I wasnt refering to heating, but Gav's reply regarding lenth of arm to lenth of bar relationship.
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NS Dev
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| posted on 2/11/06 at 01:07 PM |
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quote:
Originally posted by zetec7
Yes, it DOES matter! When you heat spring-tempered steel, it changes the alignment of the crystalline structure of the steel, most likely to mild
steel. This is fine, but when you twist it (as intended while in use...) it will likely stay twisted. You can certainly do this, but you'll
have to have a spring shop re-temper it afterwards. It's the same as softening a coil spring - it'll turn inot someting akin to a coiled
paper clip...no spring action.
Yes indeedy do, but most antiroll bars are not made from spring tempered steel.
I have made them from hollow EN8 bar, cold drawn mild steel and mild steel bright bar, all of which work brilliantly.
You only need spring steel if the std installation will take a "normal" steel past its yield point. Most setups won't do this.
(I have over 10" wheel travel on the grasser and it hasn't put a set in the bar on that)
In answer to the question, don't weld it ir it will snap through fatigue.
Entirely possible to hot bend though, I've done it with no probs.
Better to cold bend if you can though.
Retro RWD is the way forward...........automotive fabrication, car restoration, sheetmetal work, engine conversion
retro car restoration and tuning
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