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15 Jun 2008, 21:53 (Ref:2229717)
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#1 | |
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Racer
Join Date: Oct 2006
Posts: 253
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The advantages/disadvantages of inboard braking systems?
Came across this site which details the whole concept, design and development of the DP1, a true mid engined, carbon fibre bodied, 4wd, mini-sized go-kart/racecar powered by a 2.8 litre Hayabusa derived Hartley V8, giving it a power/weight ratio of 970 hp/metric ton.
http://www.dpcars.net/dp1/index.htm I love the overall concept, I was just very surprised at his choice to use an inboard braking system.. one brake disc for the front, and one for the rear. All the disadvantages of limited cooling, reduced performance from having half the braking surface contact over a conventional outboard disc set-up at each of the 4 wheels... and the undesirable?? axle locking effect under braking. He mentioned something about its merits of not locking up the unloaded front wheel on turn-in but am I missing something? What further possible advantages can it offer other than a minimal saving in weight? 
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15 Jun 2008, 22:09 (Ref:2229735)
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#2 | |
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Racer
Join Date: Oct 2006
Posts: 253
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Edit- oops.. It seems there are brake discs for each wheel.. merely inboard... but still... why go with an inboard braking system?
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16 Jun 2008, 02:59 (Ref:2229815)
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#3 | ||
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Veteran
Join Date: Apr 2006
Posts: 1,935
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Un-sprung weight?
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__________________
Contrary to popular opinion, I do have mechanical sympathy, I always feel sorry for the cars I drive.
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16 Jun 2008, 08:55 (Ref:2229907)
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#4 | ||
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Veteran
Join Date: Aug 2004
Posts: 14,699
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Blimey thats some project, some clever people out there!
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__________________
You can't polish a turd but you sure can sprinkle it with glitter!
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16 Jun 2008, 09:19 (Ref:2229922)
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#5 | ||
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Rookie
Join Date: Mar 2008
Posts: 14
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I'd imagin the reason they are inboard is so that they can use a larger diameter disc than you could fit inside a 13" wheel.
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__________________
"In theory practice and theory are the same, in practice they're not."
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16 Jun 2008, 14:23 (Ref:2230091)
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#6 | |
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Racer
Join Date: Oct 2006
Posts: 253
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Thanks for the replies,
hadnt thought about the rotor/disc size being limited by the small wheels, makes more sense now.. |
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20 Jun 2008, 00:10 (Ref:2233066)
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#7 | |
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Rookie
Join Date: Jun 2008
Posts: 4
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Have a look on youtube for dp cars. There is a video where he takes it for a run in a carpark , comes back and says the brakes aren't any good and he will have to atleast have two brakes on the front.
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