erwe
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| posted on 17/10/04 at 06:55 PM |
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Bike brakes on diff
http://www.locostbuilders.co.uk/photos.php?action=showphoto&photo=EPSN0248.JPG
http://www.locostbuilders.co.uk/photos.php?action=showphoto&photo=EPSN0249.JPG
http://www.locostbuilders.co.uk/photos.php?action=showphoto&photo=EPSN0250.JPG
It's one of the ideas for my new car. I already have those brakes on my track day car and the are perfect.
Does it work?
Any reactions?
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ceebmoj
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| posted on 17/10/04 at 07:14 PM |
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I am planing on somthing simaler what are the disks and calipers?
I have just finished converting my diff this weakend only a small amount of finishing on the bering carriers required and then I will be starting the
disk mounting. I am using a miny diff however
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Gripenland
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| posted on 17/10/04 at 07:20 PM |
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quote:
Originally posted by erwe
http://www.locostbuilders.co.uk/photos.php?action=showphoto&photo=EPSN0248.JPG
http://www.locostbuilders.co.uk/photos.php?action=showphoto&photo=EPSN0249.JPG
http://www.locostbuilders.co.uk/photos.php?action=showphoto&photo=EPSN0250.JPG
It's one of the ideas for my new car. I already have those brakes on my track day car and the are perfect.
Does it work?
Any reactions?
Very nice! 
kokos-racing.com
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malakiblunt
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| posted on 17/10/04 at 07:53 PM |
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Hi
are they for a road car? how are you going to rig the hand brake?
but otherwise they should work very well, the only reason bike brakes can be a problem in cars is if ther outboard then the hoses and nipples are in
the wrong places, this obviously isnt a problem for you.
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SeaBass
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| posted on 17/10/04 at 07:55 PM |
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I would build those support brackets out of something more substantial than acrylic but otherwise looks like a great idea...
Cheers
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nick205
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| posted on 17/10/04 at 08:05 PM |
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Looks very good to me!
Jaguar used to use the same arrangement on their rear axle/break set-up. Also it should help to reduce the unsprung mass of the car as well.
Nick
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Mave
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| posted on 17/10/04 at 08:06 PM |
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Looks good Rob!
Keep up the good work!
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Wadders
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| posted on 17/10/04 at 08:25 PM |
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Sorry to be a misery, but i ran the same setup on my car for a short while, it didnt work for two reasons.
A- could never stop grease from the lobro joints getting onto the discs, and contaminating the pads.
B- dunno about your diff, but mines a LSD from a 4x4 sierra, and the output flange on the LSD side has a lot of lateral play i.e about 5mm, this
caused the disk to rub on the caliper, i even made the caliper float to try and combat the problem, but in the end junked the setup.
Good luck with it, i hope you triumph where i failed, it does look very nice.
Oh and as mentioned, getting a working handbrake is very difficult too.
Nearly forgot to mention, the awesome stopping power of those brakes is waaay to much for such a lightweight car, i ran out of adjustment on the bias
bar, and had to fit an inline restrictor from a fiat uno,to stop them locking up, the rear brakes are virtually disabled, before correct bias is
achieved.
If i built another car i would use drums, no kidding.
Al.
i]Originally posted by erwe
http://www.locostbuilders.co.uk/photos.php?action=showphoto&photo=EPSN0248.JPG
http://www.locostbuilders.co.uk/photos.php?action=showphoto&photo=EPSN0249.JPG
http://www.locostbuilders.co.uk/photos.php?action=showphoto&photo=EPSN0250.JPG
It's one of the ideas for my new car. I already have those brakes on my track day car and the are perfect.
Does it work?
Any reactions?
[Edited on 17/10/04 by Wadders]
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andylancaster3000
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| posted on 17/10/04 at 09:16 PM |
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It looks like a nice idea, as said above it will dramatically reduce the unsprung mass, the only problem that I can see is that inboard systems have a
tendency to overheat in hard use or racing. However, its good to be different!
Andy
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JoelP
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| posted on 17/10/04 at 09:53 PM |
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overheating could be sorted with some well placed ducting. would be excellent if it could be made to work. What about putting a bigger brake onto the
front of the diff, sandwiched in by the prop?
Beware! Bourettes is binfectious.
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Peteff
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| posted on 17/10/04 at 10:01 PM |
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That would work with a locked diff but will only stop one wheel in normal use. The inboard joint is supposed to slide as part of the design
isn't it, like the front joint on a propshaft?
yours, Pete
I went into the RSPCA office the other day. It was so small you could hardly swing a cat in there.
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erwe
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| posted on 18/10/04 at 05:19 AM |
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Brake is for my race car,however it is very simple to add some kart caliper for handbrake.
That grease could be a problem but I can seal is with tape. It did the same because I had to find a place for the magnet of my bicycle speedo. I taped
it to the lobro and it is still there.
The lateral play is easy to adjust with the big (notched) ring on the outside.
Because I have the same configuration on my car the stopping power is not to much, it's just perfect. I even use very soft pads (they last 3
track days).
The overheating is not a real problem with the right ducts. A brake on the prop is not possible. It's just to big and I think the dif can hold
the forces in the 'wrong' way as there is a special shape on the teeth.
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phil_far
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| posted on 18/10/04 at 04:13 PM |
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Can the 'bike' disc and calliper set up be replicated for the front?
I am thinking of fitting bike discs at the rear with Sierra callipers and the Honda Goldwing discs (6mm thick) and bike callipers at the front.
Any comments?
Regards
Philip
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phelpsa
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| posted on 18/10/04 at 04:42 PM |
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Is there anyone who makes special bells to fit bike discs outboard on a car?
Adam
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erwe
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| posted on 18/10/04 at 07:20 PM |
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I think using bike brakes on the front you need larger disks and also 6 pot caliper (very expensive). its wiser to have willwood or make your own
uprights.
Rear is no problem: let say a bike is 200 kg so braking weight on the front (at the start of braking) is 2/3 * 200 is 135 kg at the start. This weight
will be more the longer you brake
On the rear of a car this will do.
I make teh bells on a very cheap lathe, it's not really difficult:
http://www.locostbuilders.co.uk/viewthread.php?action=attachment&tid=12919&pid=114363
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phelpsa
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| posted on 18/10/04 at 08:11 PM |
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Any tips on or pictures of the bells? I am really interested in this.
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erwe
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| posted on 19/10/04 at 04:55 AM |
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Put some detailed pics in my photo section
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phil_far
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| posted on 19/10/04 at 03:51 PM |
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From which bike did those discs come from?
Looks really cool. I will definitely go for bike discs at the rear.
Cheers
Philip
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erwe
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| posted on 19/10/04 at 07:07 PM |
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Caliper ZZR 1100 or 750
Disks Honda VFR 1100 which is not a good choise because they are hard to get.
Anything will do as log they are about 6 mm thick and between 260 and 320 mm dround.
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phil_far
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| posted on 20/10/04 at 04:01 PM |
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I was thinking of using rear bike discs for the rear since they are smaller. I found some with 150mm ID and 260mmOD. However maximum thickness for
rears is 4-5mm. Would you think that woudl be ok?
What was the weight saving/disc over the normal Sierra disc?
Drums are much lighter (I threw mine away!!) but then they just don't look right behind the rim of a 'sports/cool car' right?
Philip
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erwe
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| posted on 20/10/04 at 07:15 PM |
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Weight of disk and caliper about 1 kg.
Only a sierra disk is a few kg...
My disks are 270 mm and work OK on a 450 kg car and track use only. I really use the brakes! Only problem is that they won't fit on a 13"
alloy, that's the main reason for mounting them near to the diff. Also weight saving on the wheel side.
But with these disks you want bigger wheels because it looks very good.
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phelpsa
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| posted on 20/10/04 at 09:15 PM |
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That was one of my worries, that they wouldn't fit under 13s
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phil_far
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| posted on 22/10/04 at 09:47 AM |
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I am going for a set of OZ Superleggera cool rims. Thay are 15 inch and weigh at 4.8kg/rim which is probably only slightly more than a 13 inch.
Philip
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malakiblunt
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| posted on 23/10/04 at 12:52 AM |
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if your thinking of useing bike calipers outboard the problem is that the hoses and nipples are in the wrong place ie the outside edge rather than the
side.
i am makeing up my own six pots useing the pistons from hyabusea calipers, but its a bit involved! im also useing 10" wheels so its a very tight
fit!.
pictures on my website
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erwe
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| posted on 30/5/05 at 06:43 AM |
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I will test the car this week and see if it works.
I must mount some brake duct for extra cooling on the side of the car
 
Rescued attachment EPSN0014.jpg
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