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Lets see those custom parts v.2017

Old Nov 30, 2018, 03:21 PM
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the brembo adapters I have use threaded holes in alu for the attachment to the upright, but the holes that caliper mounts to have helicoil inside. The reasoning is that the caliper is taken of all the time and adapter stays put, and helicoil is easy to replace.

Having said that, the threads in my OE calipers are damaged and I wanted to use timesert to fix that.. I like them better than helicoil.
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Old Nov 30, 2018, 03:35 PM
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The reason to use helicoil in an undamaged hole is part to put the torque force on the steel instead of aluminum threads, and to increase the thread area of the aluminum threads. Its a perfectly viable option but its also really easy to mess up the helicoil. The time-sert just seems like a much better idea even if its probably excessive. The only thing I haven't been able to find is the outside thread for a given inside thread. Should probably just buy a set and measure them.
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Old Nov 30, 2018, 03:53 PM
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Why no studs? When I started doing homework for the uprights I remember reading some braking company saying that studs are the proper approach for radial setups as you get even clamping force on the caliper vs bolts. Plus you don't get that thread wear and potential damage.
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Old Nov 30, 2018, 04:19 PM
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Im talking about the threads at the ears as it attaches to the upright. Brake mounting part would definitely be a stud.
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Old Nov 30, 2018, 04:48 PM
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I think a time sert is perfectly fine though they can be kinda of pricey. Really though they're not going to be taken on and off a ton I think any of the above would be fine.
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Old Dec 1, 2018, 11:24 AM
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Originally Posted by ayoustin View Post
Why no studs? When I started doing homework for the uprights I remember reading some braking company saying that studs are the proper approach for radial setups as you get even clamping force on the caliper vs bolts. Plus you don't get that thread wear and potential damage.
problem with a stud is that a nut on the stud is usually higher than your allen hex bolt head and could protrude outside of the caliper... which is a problem if you run real small caliper to rim clearence. Looking at the way holes in the caliper are recessed, I think we might use these undesized 12 point nuts. I do agree that using studs is the best way, if it can fit..

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Old Dec 1, 2018, 11:26 AM
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Originally Posted by Dallas J View Post
The reason to use helicoil in an undamaged hole is part to put the torque force on the steel instead of aluminum threads, and to increase the thread area of the aluminum threads. Its a perfectly viable option but its also really easy to mess up the helicoil. The time-sert just seems like a much better idea even if its probably excessive. The only thing I haven't been able to find is the outside thread for a given inside thread. Should probably just buy a set and measure them.
yeah, looking at the way mine are done, it looks like helicoil was the original solution.. the threads in teh adapter are done in the factory, you can see it by the anodisation on the threads..

I was looking for time sert but it is very hard to find in EU and quite expensive
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Old Dec 1, 2018, 12:03 PM
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Where the nut sits in the caliper is usually recessed and not an issue. I would never use a hex head for a caliper bolt. You're about begging for it to get partially stuck and then strip the head lol
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Old Dec 1, 2018, 02:00 PM
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Yeah, but the recess is small because it is made for allen head bolt.... that is why I mentioned nuts with undersize 12 point heads (like those used on exhaust manifold..)

Actually most of new cars have either allen head bolts or torx these days..
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Old Dec 9, 2018, 10:47 AM
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Did the mivec cam gear project ever materialize?
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Old Dec 9, 2018, 11:01 AM
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I made the CAD model but haven't machined one yet. Its been pretty low on my list of things to get done TBH. But that's a good reminder to put it on my list of active projects.
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Old Dec 9, 2018, 11:32 AM
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Did the mivec cam gear project ever materialize?
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Old Dec 27, 2018, 03:52 PM
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Very useful thread. Would be a dumb choice, to not subscribe.

Last edited by sumopower87; Dec 28, 2018 at 06:44 AM.
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Old Dec 27, 2018, 04:00 PM
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Because I wanted to play with topology studies in Solidworks and do more 3D tool paths, I spent extra time getting fancy with these radial caliper mounts.

This one is for a guy in UK (not sure if he's here or not) but will mount up the AP Racing calipers from a BMW kit he got. But the main reason I started this was to make a bracket for Ken Thwaits's car to move from the Superlite Evo kit to Aero6 caliper. Just a change in bracket but wasnt willing to make a half assed part

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Old Dec 30, 2018, 06:45 AM
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Iím on here Dallas.

Calliper im using is an CP5575 for an E46 M3. I bought them impulsively but with the machined face they might actually help to fit some 9.5x18s without spacers due to more spoke clearance.


Last edited by TimC909; Dec 30, 2018 at 07:05 AM.
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