Hit the brakes !!!
) for cheap.
12-09-2011, 09:27 AM
#29
Junior Member
Join Date: Oct 2010
Location: Tegelen, the Netherlands
Posts: 74
Total Cats: -8
Hey guys,
I'm sorry to drag this thread from the grave, but I think I have a valid reason.
The posts of Sandro in this thread have inspired me to do a similar big brake upgrade.
I wanted to PM him, but I need to have at least 15 posts, but I do not want to spam up the forums.
I realise I havn't made an introductory thread, but I will do this if required.
Instead of sending a PM I'm posting in here.
I hope Sandro is willing to share some of his knowledge with me.
The problem I'm running into has to do with designing the caliper brackets.
How did you work around the Boxster caliper bolts interfering with the Miata bracket bolts?
The only option I see is using shorter bolts to mount the calipers, but I'm not sure if this will be safe with so little threads engaged.
Input from other members is also highly appreciated ofcourse :P.
Greetings,
Opgedronken
I'm sorry to drag this thread from the grave, but I think I have a valid reason.
The posts of Sandro in this thread have inspired me to do a similar big brake upgrade.
I wanted to PM him, but I need to have at least 15 posts, but I do not want to spam up the forums.
I realise I havn't made an introductory thread, but I will do this if required.
Instead of sending a PM I'm posting in here.
I hope Sandro is willing to share some of his knowledge with me.
The problem I'm running into has to do with designing the caliper brackets.
How did you work around the Boxster caliper bolts interfering with the Miata bracket bolts?
The only option I see is using shorter bolts to mount the calipers, but I'm not sure if this will be safe with so little threads engaged.
Input from other members is also highly appreciated ofcourse :P.
Greetings,
Opgedronken
Reply
0
0
12-09-2011, 11:44 AM
#30
Cpt. Slow
iTrader: (25)
Join Date: Oct 2005
Location: Oregon City, OR
Posts: 14,189
Total Cats: 1,135
Well, you're humble, using good grammar, and have a valid, well thought out question. So by all means, drag the thread out from the grave.
Are you in Germany? I would imagine it's slightly easier/cheaper to get Porsche stuff over there (where the Porsche BBK guy is from) but if you're in the states, it's MUCH easier to go with a wilwood setup.
$250 in calipers, $60 in rotors, $80 in brake lines, and $100-$200 in brackets, and you've got a great BBK with $30 replacement rotors and $60 buys you almost any pad compound you want, from street to race.
Are you in Germany? I would imagine it's slightly easier/cheaper to get Porsche stuff over there (where the Porsche BBK guy is from) but if you're in the states, it's MUCH easier to go with a wilwood setup.
$250 in calipers, $60 in rotors, $80 in brake lines, and $100-$200 in brackets, and you've got a great BBK with $30 replacement rotors and $60 buys you almost any pad compound you want, from street to race.
Reply
0
0
12-09-2011, 11:50 AM
#31
Junior Member
Join Date: Oct 2010
Location: Tegelen, the Netherlands
Posts: 74
Total Cats: -8
Haha thanks, first impressions last right 
.
I'm in Holland and parts are pretty decently priced, but Ive already got everything together!
I just need to fab up the mounts, and I could have done that already if I wasn't worried about safety.
Thanks for thinking with me though!
I was hesitant to pull the trigger on a Wilwood kit, but now I've found these. The Wilwoods look a bit too much like kissy lips to me :P.
Here's a pic of the first caliper mocked up.
.I'm in Holland and parts are pretty decently priced, but Ive already got everything together!
I just need to fab up the mounts, and I could have done that already if I wasn't worried about safety.
Thanks for thinking with me though!
I was hesitant to pull the trigger on a Wilwood kit, but now I've found these. The Wilwoods look a bit too much like kissy lips to me :P.
Here's a pic of the first caliper mocked up.
Reply
0
0
12-09-2011, 01:10 PM
#32
Junior Member
Join Date: Dec 2010
Location: UK, in Cambridgeshire or wherever work takes me.
Posts: 375
Total Cats: 20
I saw a mention of Axxis ULT pads somewhere on MT recently, but for the life of me I can't remember where. I think the jist was that they're good road pads but come up short on the track. Can anyone elaborate on this? I'm interested because they're a very popular pad on this side of the pond 
Reply
0
0
12-09-2011, 06:52 PM
#33
Junior Member
Join Date: Oct 2010
Location: Tegelen, the Netherlands
Posts: 74
Total Cats: -8
Hmm either this thread is in the wrong section to gain a lot of attention, or I'm asking something too complex :P.
Anyway, I've decided I will just go ahead and machine the brackets out of steel. Taking into consideration there will be a shear force on the bolts instead of a tensile force, I suppose I don't need a ton of thread engagement on the bolts.
If the brackets really come out looking very flimsy I still decide to toss them out and come up with something better.
Anyway, I've decided I will just go ahead and machine the brackets out of steel. Taking into consideration there will be a shear force on the bolts instead of a tensile force, I suppose I don't need a ton of thread engagement on the bolts.
If the brackets really come out looking very flimsy I still decide to toss them out and come up with something better.
Reply
-1
-1
12-09-2011, 07:45 PM
#34
Elite Member
Join Date: Jul 2007
Location: Houston, TX
Posts: 3,203
Total Cats: 147
Opgedronken, If you will post pics of your problem I'm sure it can be solved here on this forum. Post some pics bud.
Owen, you need to match your pad to the tires. So if your on a 400 treadware tire the Axis Ultimates will be plenty. If your on RS3, NT01, RA1, BFG R1, etc you need to run a race pad like carbotech xp10, Cobalt XR3, Hawk DTC 60, etc.
Owen, you need to match your pad to the tires. So if your on a 400 treadware tire the Axis Ultimates will be plenty. If your on RS3, NT01, RA1, BFG R1, etc you need to run a race pad like carbotech xp10, Cobalt XR3, Hawk DTC 60, etc.
Reply
0
0
12-09-2011, 08:03 PM
#35
Junior Member
Join Date: Oct 2010
Location: Tegelen, the Netherlands
Posts: 74
Total Cats: -8
I kinda figured I overdescribed it, I'll take some pics tomorrow when I mock it up again.
It really boils down to one thing. I'm worried the bolts that hold the caliper down to the bracket will not have enough threads engaged to safely hold it on.
It really boils down to one thing. I'm worried the bolts that hold the caliper down to the bracket will not have enough threads engaged to safely hold it on.
Reply
0
0
12-09-2011, 08:37 PM
#37
Junior Member
Join Date: Oct 2010
Location: Tegelen, the Netherlands
Posts: 74
Total Cats: -8
It's because I can't make the bracket any thicker where the bolts screw in because it would put the caliper to far outwards.
I'll try to take a pic, but I'm not sure how it will help more.
Looking at pics of similar caliper brackets I think I might be a bit too worried about it, because they aren't really thát thick either.
I'll try to take a pic, but I'm not sure how it will help more.
Looking at pics of similar caliper brackets I think I might be a bit too worried about it, because they aren't really thát thick either.
Reply
0
0
12-14-2011, 05:53 PM
#40
Looks like used Porsche Boxster Calipers go for $100 or so a piece, less than used Wilwood calipers.
Boxster rotor sizes are 298mm front and 292mm rear, Miata Sport Rotors are 270mm front, might be close enough to make it work. Renault Clio rotors look like a ideal fit (bolt pattern, center bore and 280mm size) but they are not available in the US and shipping on rotors is quite expensive.
The question is if the thickness of the Porsche/Brembo calipers require spaces ro make 6ULs (15x8) work.
Boxster rotor sizes are 298mm front and 292mm rear, Miata Sport Rotors are 270mm front, might be close enough to make it work. Renault Clio rotors look like a ideal fit (bolt pattern, center bore and 280mm size) but they are not available in the US and shipping on rotors is quite expensive.
The question is if the thickness of the Porsche/Brembo calipers require spaces ro make 6ULs (15x8) work.
Reply
0
0
