ceebmoj
|
| posted on 17/12/12 at 11:35 AM |
|
|
Upgrading to wilwood on the front
My christmass present this year is going to be upgrading the car to use wilwoods on the fount. I run the ford cortina upright and a 13" wheel.
Do people recommend sticking with the solid disk or going vented. the car is a BEC and mostly used on the road.
|
|
|
|
|
ElmrPhD
|
| posted on 17/12/12 at 12:00 PM |
|
|
Superlight (BEC) cars should avoid heavy, ventilated discs. Out "there" at the wheels is the most important location to minimize
(unsprung) mass. Well, theoretically, the tire is the most important place due to rotation effects, but there's often not much one can do about
that.
I would go further and have the discs drilled and/or grooved for weight reduction and better cooling.
Cheers,
Steve, in the NLs
|
|
|
adithorp
|
| posted on 17/12/12 at 12:01 PM |
|
|
Stick with solid discs. I've yet to have any fade from mine either on track or nailing it down Alpine passes (which is probably the toughest
test you can do to brakes). Don't go for the Wilwood Smart pads though; Get some Mintex 1144's in stead as they have much better feel.
"A witty saying proves nothing" Voltaire
http://jpsc.org.uk/forum/
|
|
|
ceebmoj
|
| posted on 17/12/12 at 12:31 PM |
|
|
Thanks for the feed back and for once it looks like every one agrees as well, which is a bonus.
|
|
|
Johneturbo
|
| posted on 17/12/12 at 12:42 PM |
|
|
I've got solid discs with some groves that came with the kit
i hardly use the brakes on the road with the amount of engine braking you get from a BEC
infact my brake lights hardly come on due to having a hydraulic switch (must brake harder)
|
|
|
Benzo
|
| posted on 17/12/12 at 12:52 PM |
|
|
again.. no need for vented discs on a BEC.. heavy and youd never get them up to temp.
|
|
|
TimC
|
| posted on 17/12/12 at 01:27 PM |
|
|
quote:
Originally posted by Benzo
again.. no need for vented discs on a BEC.. heavy and youd never get them up to temp.
I tend to agree with the first statement, but interesting that the most
successful front-engined RGB car ever uses vented front discs which suggests that your second statement is unlikely to be true.
|
|
|
coyoteboy
|
| posted on 17/12/12 at 01:37 PM |
|
|
It's pretty hard to assess what driving conditions a car is going to see in order to estimate what heat dissipation you're going to need.
There's a ~4kg per corner difference between some vented and some solid discs, which is a lot, but if you have to re-design uprights/brakes when
you find you've under-cooked the rotor design you're more tempted to go larger I can tell you!
With something that the swap is fairly simple, I'd be less worried about staying small.
|
|
|
mark chandler
|
| posted on 17/12/12 at 02:05 PM |
|
|
Mine has vented discs, hammering it around the track and they still stay cool, when I get up the energy I will swap out for none vented.
|
|
|
ceebmoj
|
| posted on 17/12/12 at 02:19 PM |
|
|
As keeping the unsprung weight down seems to be the most important thing. Has any one drilled there own disks? On Loco's CB500T Cafe Racer
build diary. He prints out a patten and then drills the disks. As far as I can see it should not be to hard to make up a patten for cortina disks and
do the same as the disks below.
http://www.premiermotorsportdevelopments.co.uk/cortina-ultralight-brake-discs---18kg-saving-200-p.asp
|
|
|
Benzo
|
| posted on 17/12/12 at 02:30 PM |
|
|
quote:
Originally posted by ceebmoj
As keeping the unsprung weight down seems to be the most important thing. Has any one drilled there own disks? On Loco's CB500T Cafe Racer
build diary. He prints out a patten and then drills the disks. As far as I can see it should not be to hard to make up a patten for cortina disks and
do the same as the disks below.
http://www.premiermotorsportdevelopments.co.uk/cortina-ultralight-brake-discs---18kg-saving-200-p.asp
Those discs are exactly what i'm after for my setup, does anyone else do them? i cant bring myself to Pay a 1/3 of the cost of the item just for
postage to NI when it should be free postage like the rest of the UK.
|
|
|
ceebmoj
|
| posted on 17/12/12 at 02:58 PM |
|
|
Why not follow this guide How to drill youer
brak disks
|
|
|
Benzo
|
| posted on 17/12/12 at 03:09 PM |
|
|
Well I need discs as well so I may as well buy some pre drilled!
* they did me a deal on the postage so ive gone for the ones listed with the 1.6kg saving.
[Edited on 17/12/12 by Benzo]
|
|
|
filemon
|
| posted on 23/12/12 at 02:35 PM |
|
|
I have had home made drilled discs in my Skoda rally car some time ago. It worked perfectly, it didn't bent or crack cause of heat. I have
coppied Zimmerman brake discs hole pattern. I'm going to do the same upgrade with my Haynes Roadster brake discs.
|
|
|
ceebmoj
|
| posted on 23/12/12 at 10:13 PM |
|
|
quote:
Originally posted by Benzo
Well I need discs as well so I may as well buy some pre drilled!
* they did me a deal on the postage so ive gone for the ones listed with the 1.6kg saving.
[Edited on 17/12/12 by Benzo]
Please can you post some pictures when you get them.
|
|
|
Benzo
|
| posted on 23/12/12 at 10:23 PM |
|
|
quote:
Originally posted by ceebmoj
quote:
Originally posted by Benzo
Well I need discs as well so I may as well buy some pre drilled!
* they did me a deal on the postage so ive gone for the ones listed with the 1.6kg saving.
[Edited on 17/12/12 by Benzo]
Please can you post some pictures when you get them.
Should be here tomorrow or Thursday! 
|
|
|
ceebmoj
|
| posted on 30/12/12 at 07:18 PM |
|
|
Have the disks arrived? If so can you post some pictures?
|
|
|
Stott
|
| posted on 30/12/12 at 08:02 PM |
|
|
Just too add and agree with TimC I've got willwoods with mintex 1144s with vented discs and on short tracks on slicks they get too hot and
needed ducting adding to them which solved it.
This was hard use though so I can't see solids being a problem for anything but the most extreme use.
|
|
|
Benzo
|
| posted on 30/12/12 at 11:49 PM |
|
|
quote:
Originally posted by ceebmoj
Have the disks arrived? If so can you post some pictures?
I haven't received them yet :-/
|
|
|
Benzo
|
| posted on 7/1/13 at 11:21 AM |
|
|
Discs finally arrived today - 1.8kg saving version.. they certainly feel much lighter..
Saves me having to send them off and get them skimmed & Drilled.
[Edited on 7/1/13 by Benzo]
|
|
|
ElmrPhD
|
| posted on 7/1/13 at 11:30 AM |
|
|
That's too cool!
So:
- is that 900 g per disk or 1.8 kg per disk?
- what did they cost?
I might do the same if it's affordable.
Well done!
Steve, in the NLs
|
|
|
Benzo
|
| posted on 7/1/13 at 11:54 AM |
|
|
quote:
Originally posted by ElmrPhD
That's too cool!
So:
- is that 900 g per disk or 1.8 kg per disk?
- what did they cost?
I might do the same if it's affordable.
Well done!
Steve, in the NLs
I assume 900g per disc, 1.8kg combined..
The discs came from..
http://www.premiermotorsportdevelopments.co.uk/cortina-ultralight-brake-discs---18kg-saving-200-p.asp
Iain
|
|
|
ceebmoj
|
| posted on 7/1/13 at 12:39 PM |
|
|
Its probably just the photos, but the swept patten of holes on that disk don't seam to overlap. I was under the impression that they should.
|
|
|
