Uphill Racers

Go Back   Uphill Racers > Technical > Engine & Chassis
Register FAQ Members List Calendar Downloads Mark Forums Read

Reply
 
Thread Tools Display Modes
  #1  
Old 28-07-16, 04:42
sprite sprite is offline
Junior Member
 
Join Date: Jan 2016
Location: Sydney Australia
Posts: 34
sprite is on a distinguished road
Bike calipers on BEC

So, is anyone using bike calipers on BEC open wheelers around 300-350kg weight? If so, what bikes are they from?
Also, would they be OK for track days or only for short run hill climbs?
Thankyou
Reply With Quote
  #2  
Old 28-07-16, 07:03
kano nordie kano nordie is offline
Senior Member
 
Join Date: Jun 2015
Location: Kano Nigeria
Posts: 1,118
kano nordie will become famous soon enough kano nordie will become famous soon enough
Most in the UK use AP calipers, but if bike calipers are more easily available in OZ why not, they are light and able to stop a 1000cc sports bike from 300kph, should be no problem in a 300kg car
Reply With Quote
  #3  
Old 28-07-16, 07:41
red21's Avatar
red21 red21 is offline
Senior Member
 
Join Date: Jan 2007
Location: New Forest
Posts: 277
red21 is on a distinguished road
With bike calipers they also designed for use on larger diameter discs where most formula cars use 13' wheels which limits disc size.
Reply With Quote
  #4  
Old 28-07-16, 08:25
kano nordie kano nordie is offline
Senior Member
 
Join Date: Jun 2015
Location: Kano Nigeria
Posts: 1,118
kano nordie will become famous soon enough kano nordie will become famous soon enough
Not so much larger 360mm-380mm, I have 315mm dia on a road car on 13" wheels here in Kano, it all depends on what you can adapt to suit your needs when there are no other easily available options.
John
Reply With Quote
  #5  
Old 28-07-16, 08:48
Adam's Avatar
Adam Adam is offline
Senior Member
 
Join Date: Jan 2007
Location: Cirencester
Posts: 606
Adam is on a distinguished road
Quote:
Originally Posted by kano nordie View Post
Not so much larger 360mm-380mm, I have 315mm dia on a road car on 13" wheels here in Kano, it all depends on what you can adapt to suit your needs when there are no other easily available options.
John
How on earth have you managed that? Inboard? 5mm of space for the caliper and wheel rim thickness?!
Reply With Quote
  #6  
Old 28-07-16, 09:07
kano nordie kano nordie is offline
Senior Member
 
Join Date: Jun 2015
Location: Kano Nigeria
Posts: 1,118
kano nordie will become famous soon enough kano nordie will become famous soon enough
Quote:
Originally Posted by Adam View Post
How on earth have you managed that? Inboard? 5mm of space for the caliper and wheel rim thickness?!
Toyota Corolla (they are common) calipers and rotors adapted onto Mini drum brake hubs with local made back plates
John
Reply With Quote
  #7  
Old 28-07-16, 09:08
SteveSlowboy's Avatar
SteveSlowboy SteveSlowboy is offline
Not-so-slowboy
 
Join Date: Oct 2007
Location: Scotland
Posts: 1,082
SteveSlowboy will become famous soon enough SteveSlowboy will become famous soon enough
I believe the GSXR Megapin of Tam Graham has bike calipers, and my Saxon (albeit a bit lighter than 300kg) is fitted with tiny Grimeca calipers.

The biggest problem with using bike calipers is finding suitable brake pad options as the favoured Performance Friction pads aren't available for bikes.
__________________
Working on increasing my carbon (fibre) footprint
Reply With Quote
  #8  
Old 28-07-16, 09:26
Filmstar Filmstar is offline
Senior Member
 
Join Date: Jan 2007
Posts: 242
Filmstar will become famous soon enough Filmstar will become famous soon enough
The bleed nipple on bike calipers usually sticks out a long way from the body of the caliper, obviously no restrictions on a bike. This would have an effect on the size of disc that could be used certainly considerably less than 300mm diameter.
The other point is the swept area of the disc.
Reply With Quote
  #9  
Old 28-07-16, 11:04
Nick A's Avatar
Nick A Nick A is offline
British Sprint Champ09/10
 
Join Date: May 2007
Location: Newcastle
Posts: 647
Nick A is on a distinguished road
Whilst initially it seems an attractive idea, it's got so many downsides ie Pad compound, disk diameter, swept are, bleed nipples that when I looked it just became a non starter for me.
__________________
WSCC Championship Coordinator
Reply With Quote
  #10  
Old 28-07-16, 13:41
Nick Skidmore's Avatar
Nick Skidmore Nick Skidmore is offline
Senior Member
 
Join Date: Mar 2007
Location: Shropshire
Posts: 727
Nick Skidmore will become famous soon enough
Brembo do a cheap (£68) aftermarket 2 pot 38mm bike caliper that suits their 278 x 6.4mm floating disk which is about as big as you can get inside a 13" racing wheel, has nipples in all the right places. Mode performance are UK agents but I'm sure you have one in Oz.
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT +1. The time now is 22:45.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Copyright© 2007-2017 www.uphillracers.com