Caterham Uprated Calipers.

[mickrick]

Hello all.
Does anyone know what the weight of an uprated caliper is?
Also, what the weight of a front ventelated disc is?

TIA.
Mick.

[mickrick]

Boing! Surely someone has weighed their bits?
Or has no one worked out their sprung/unsprung bits to get an acurate spring rate?
Anyone?..................

I'm trying to get a lighter setup than the CC stuff.
Cheers,
M.

[jchasey]

Brake Calipers AP 4pot caliper and pads 2.46
Brake disk AP front vented 3.15
Brake disk standard Sierra 2.45

I have the above weights listed (from another blatchat member originally) - hope this helps.

John

[mickrick]

Oh! You're a Star!

You wouldn't know what the thickness of the ventelated disc is would you?

Cheers,
M.

[rj]

And whilst we are at it:

How much is the weight of the standard caliper?

[mickrick]

rj said:

And whilst we are at it:

How much is the weight of the standard caliper?

According to a search on BC 3.2kg without pads.

ETA, I don't know if that's each or both. If it's each.....

Edited by mickrick on Sunday 6th June 12:03

[F355GTS]

mickrick said:

Oh! You're a Star!

You wouldn't know what the thickness of the ventelated disc is would you?

Cheers,
M.

20mm from memory Mick

[mickrick]

That's great, thanks a bunch!

I thought I had it all sorted, I've had someone supposedly making me up some stuff since January, well, ordered in October actualy, but that's another unfortunate story.
The people I ordered from where fine, but the chap who was doing the work was a disaster, so I've had to walk away, and start all over.

Now dealing with BG Developments, who seem to know their stuff.
Just need to find the time to get over to blighty with my suspension.

Thanks again for the replies.

Edited by mickrick on Tuesday 8th June 20:01

[BBL-Sean]

I have found this link useful for such things: http://www.kitcar-trader.co.uk/weights.php

[mickrick]

Thanks Sean, but I've found that about as much use as an ashtray on a motorcycle!
Whatever I put in.....Sorry there are no results etc. etc.

But thanks again for the link.

[Murph7355]

mickrick said:

Thanks Sean, but I've found that about as much use as an ashtray on a motorcycle!
Whatever I put in.....Sorry there are no results etc. etc.

But thanks again for the link.

Try just using the drop downs (manufacturer, "component"). Returned plenty when I've just tried....but not front brake discs

[DaveK-S1]

Mick

If BG are looking at making disc /calipers for you, have you thought of using a 265mm solid disc on a floating bell, lighter than the vented discs , used with a 4 piston caliper similar to the james whiting conversion you will get the same pad area as the vented set up with lighter weight.

Dave

[BBL-Sean]

mickrick said:

Thanks Sean, but I've found that about as much use as an ashtray on a motorcycle!
Whatever I put in.....Sorry there are no results etc. etc.

But thanks again for the link.

Here is a screenshot:

[mickrick]

Thanks again Sean! Seems I shouldn't have put "Caterham into the search box.
I see the weight for a ventelated disc is 3.15kg. Very helpful after all.

Dave, if I stick with a vented rotors, I recon it will be lighter with alloy bells anyway. I should be able to go to 275mm and keep within a 13in wheel, and maybe come our at the same weight.
I can definately go lighter with calipers.
Apart from getting less unsprung weight, the main excercise is to improve the braking performance on a car geared for 165mph.

Thanks all for the response.

[DaveK-S1]

Mick

The solid discs are approx 1kg lighter per disc

Dave

[mickrick]

Cheers, Dave. But what about the heat?

[DaveK-S1]

Mick

With the floating disc you help alleviate any problems that are generally caused by using a solid 1 piece disc, the extra dia will give you the same leverage ie braking power as a vented disc of the same dia.

Current pad compounds will happily take the heat generated, if you were consistently stopping from 140mph + then vented discs might be the way , but for most road going 7's the solid disc will be fine, not as good for the pub talk though

We ran our 650kg Chevon B8's on solid 1-piece discs for 1 hour endurance races with no problems in 40deg heat of south africa

Dave

[mickrick]

Interesting. Although whether I have floating discs or not depends on what the caliper is.
When I get chance to get over, I'll go through the options with BGD.
But I just wanted the weights to see if I could go lighter, and not go any heavier on the corner weights.

Cheers,
M.

[Dave J]

hi

where do the 265mm on bells come from ? - perf braking ?

do the STD Caterham 4 pot calipers cope with the reduced thickness ?

cheers

dj

[summit7]

Hi Mick,

Contentious subject I know but solid discs and less weight for me.

I have boiled my brake fluid once - would vented disks have stopped that maybe, having DOT 3 not DOT 4 brake fluid might have had something to do with it as well.

There is such a range of pads that cope with great heat that pad performance probably isn't the issue.

As said elsewhere maybe pub talk from uber barges comes in here.

It probably comes down to what you are trying to achieve a powerfull 7 with the corresponding heavy brakes/wheels (width)/tyres or a lower powered 7 that has greater balance/feel/delicacy.

Dicks