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Old 09-06-2010, 06:24 PM
zrawk95 zrawk95 is offline
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Default DIY Brakes?

I had an idea for using some bike brakes and some mildly used brake pads off a car to make a homemade brake setup, currently the kart has a brake disc, but no actual assembly connected to the pedal. Would this setup give even somewhat reasonable stopping power? I dont know if any of this makes sense, but it does in my head
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Old 09-06-2010, 06:25 PM
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You mean bicycle brakes? No. Motorcycle brakes, yes.
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Old 09-06-2010, 06:32 PM
zrawk95 zrawk95 is offline
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i dont really need it to stop on a dime, would it at least be better than no brakes?
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Old 09-06-2010, 07:14 PM
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better than no brakes, yes, better than a stick shoved in-between the spokes, no. spend 20 bucks on brakes, and you won't spend 200 bucks fixing YOU and the kart after hitting the tree
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Old 09-06-2010, 07:23 PM
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Better than no brakes? Not by much. Bugger all for clamping pressure. You have lots of options, even free if you're resourceful. You can use a hydraulic setup from a bike, car, sled or quad if you can source it free or cheap and have a little mechanical inclination. There are mechanical calipers that can be had for fairly cheap, too.

Three quick examples for you-

My kart- Hydraulic Clutch Master Cylinder (yes, clutch!) from 80's Toyota pickup truck, and caliper from 80's Mercedes (both scrapyard finds)

My Kids' Kart- Hydraulic Brake Master Cylinder and Caliper (front) from 1988 Yamaha XV250 Virago motorcycle.

Here's another lo-buck idea- awhile back, a few of us were batting around ideas for a home-built mechanical brake caliper using either a large C-clamp or woodworker's clamp for actuation, search around here, you should be able to find some info.

My kart build in progress- Hydraulic Brake Master Cylinder and front left caliper from 1984 Honda VT750 Shadow motorcycle
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Old 09-06-2010, 08:13 PM
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My brake set up is a master cylinder from a yamaha r6 and dual piston from a 80's suzuki gs850. The most expensive part was the lines connecting the 2
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Old 09-07-2010, 05:38 AM
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Quote:
Originally Posted by r97 View Post
better than no brakes, yes, better than a stick shoved in-between the spokes, no. spend 20 bucks on brakes, and you won't spend 200 bucks fixing YOU and the kart after hitting the tree
$200? try $2000. No brakes is a horrible idea. Toystory, the C-clamp sounds like a really good, cheap idea.
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Old 09-07-2010, 07:41 AM
zrawk95 zrawk95 is offline
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right now, no brakes isnt too dangerous considering it only goes 20 on a long strait, but if the speed calculater on this websites even remotely correct, it will go 45-ish. How hard would it be to integrate brakes from an old junker onto the kart?
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Old 09-07-2010, 08:00 AM
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the speed calc here doesnt take friction or weight or wind resistance into account
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Old 09-07-2010, 01:42 PM
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oops, sry i forgot to factor in the price of fixing "you"(not cheap)
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Old 09-07-2010, 02:35 PM
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Depends upon where you live and your economic class. It may be totally free.
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Old 09-07-2010, 03:46 PM
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does anyone know of a place that has a tutorial on how to use car brakes? im sure i could find some easy enough, but getting them to work im not so sure.
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Old 09-07-2010, 05:07 PM
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well discs from a car just sit on the hub so find a hub with a hole the size of your axil then put the disc on, the caliper is self explanitory.

(assumeing u have live axil)
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Old 09-07-2010, 05:22 PM
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car brakes probably weigh a ton!
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Old 09-07-2010, 05:32 PM
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Quote:
Originally Posted by r97 View Post
car brakes probably weigh a ton!
What he said. The rotors ive worked with weigh at least 10lbs and the calipers weigh about the same. It would take alot more torque to get car rotors turning. Not to mention how much overkill car brakes would be. Id suggest motorcycle brakes.
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Old 09-07-2010, 06:49 PM
zrawk95 zrawk95 is offline
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any price estimate for motorcycle brakes?
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Old 09-07-2010, 06:50 PM
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cheap, if you get from a junk yard
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Old 09-07-2010, 07:01 PM
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where i live, motorcycles are rare, but you cant walk 10 feet without finding a junk 4 wheeler, that should work right
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Old 09-07-2010, 07:31 PM
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You bet!
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Old 09-07-2010, 08:08 PM
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Quote:
Originally Posted by devino246 View Post
Toystory, the C-clamp sounds like a really good, cheap idea.
I can't take credit for the idea, it wasn't mine. I can, however, take credit for this idea: http://www.diygokarts.com/vb/showthr...chanical+brake
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Treat it as you would an aircraft frame and you should have no problems. -Name Withheld
The Manual- "Just the manufacturer's opinion of how to put this together."- Tim "The Tool Man" Taylor
Put down the wrench, and come out with your hands up!- Me!
Wrench, Wheel, Wreck, Repeat...
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