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sorry if this is in the wrong section, please move accordingly if so


Looking for a shop that can make me two pairs of caliper adapters (f and r, not dupes).


like all clueless morons on the internet I want them to be both good and cheap and yes I do want a god damn cherry on top too


am I dreaming asking for a shop to back up their product? or will they all say "for off road use only, no liability"?


Cheers


-A

Edited by Anti
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Even if they are up to the task, you'd be hard pressed to find anyone warranting them for street use. Big liability issues there. Unless they are capable of performing the engineering calculations / FEA modelling of the components, nobody is going to be willing to certify brake products for use on the street.

You would be better to speak with a consulting engineer, and get their guidance on material spec, thickness etc.

Or work with the fabricator to come up with a design, then see the consulting engineer to get his input.

If you can come up with a design that your engineer will approve; you will have no issues getting an engineers certificate to support the modification.

HOWEVER!

There is an old adage; and it is especially applicable with engineering work.

good_2dcheap_2dfast.jpg

Yes.

Just to clarify, my previous post was referring to fab / machine shops. You can indeed get things certified for street use, but you need a suitably qualified / appointed Engineer or equivalent (depending on where you are). I looked into this several years ago (just needed to be MIEAust, which I was at the time) but my insurance costs would have been prohibitive. Would need to turn over tens of thousands a year to make it worthwhile. Not worth it to sign off on 1 or 2 jobs a year.

Edited by warps

The whole project is getting pretty spastic at this point so it'll be engineered again before it's back on the road. I'm not worried about having brake caliper adapters passed, cars come with them standard these days. It's lame that no one will support their product; may as well do it myself.

Yes, but you will find that OEM parts are often forged, heat treated, surface ground etc. to get the right fatigue life and ensure the mechanical properties are up to the task. They have a team of engineers designing every little component for the car on a multi million dollar budget, as well as a full warranty program (and legal support in case their products fail and cause deaths)

A lot of workshops cut their brackets out of a bit of 250 or 350 grade plate. Some use a plasma cutter, some use a water cutter, some machine them out of a billet. There's little to no engineering that goes into it (apart from dimensional design to ensure that the part fits where it's supposed to), so the manufacturers are unlikely to know what's adequate (apart from a bit of empirical data). When you have to design a component for a purpose (and anticipate the loading on that component for its full lifetime) it becomes a whole lot more complex. I don't know of too many fab or machine shops with FEA software, and more importantly, the knowledge on how to use it.

  • Like 1

At the other end of the scale...

I can buy a set of trailer axles, backing plates, brakes, springs and so on and build a tandem car trailer.

Get a weigh bridge docket for the tare, fill out the various "home built" forms for the VIN plate and have a registered trailer on the road.

The backing plate brackets are flame cut from 12mm mild steel plate and one welds them to the axle with no pre or post heat treatment.

Could have around 3t rolling down the road on the back of the 4X at up to 100kph.

post-73571-0-11014400-1421818217_thumb.jpg

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