Russell
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| posted on 6/5/10 at 04:54 PM |
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OT Push Bike Brake Calipers on a Go-Kart
I'm being pestered into making a decent go-kart for the kids. The previous attempt that we built during a bathroom refurb was great fun but it
had no brakes:
Image deleted by owner
so this time I want to provide some stopping power, but on a budget. I think the way to go is to use disc brakes and calipers off a push bike. So,
my questions are:
(1) Are front and back brakes on bikes the same? I see them advertised as separate items so what's the difference between them?
(2) Where can I get some new or used calipers and discs for next to nothing? eBay is OK but all the second hand stuff seems to be Shimano or whatever
and I don't care about brand names or weight. I can get new calipers for £3.99 + £2.50 p+p, off eBay which seems reasonable.
For simplicity and cost I'm thinking cable operation rather than hydraulic.
Does this sound like a good idea? Maybe someone on here has got a couple of scrap brakes they would like to swap for ££? I'm only going to
brake one axle so I'm after 2 calipers and 2 discs.
I'm a bilingual illiterate. I can't read in two languages.
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Staple balls
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| posted on 6/5/10 at 05:10 PM |
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IIRC as far as 1) goes, the same caliper will fit front and rear, but the rear needs a 20mm smaller disc (165R 185F is pretty standard) at least with
the IS tabs.
I'd beware anything costing £7 if you actually want them to work.
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bmseven
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| posted on 6/5/10 at 05:31 PM |
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You only need one disc 
BMW 7 Resource
Bures Pit anyone?
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Paul TigerB6
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| posted on 6/5/10 at 05:41 PM |
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My pads alone are £20 per pair on my mountain bike!! They generally differ in the length of the cable / hose, as well as often in size.
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tegwin
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| posted on 6/5/10 at 06:21 PM |
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IMHO... get a brake assembly from a moped..... would be cheaper and much more chunky...
I have a set of 4 pot single piece alloy callipers on the front of my mountain bike complete with floating disk rotor... they were NOT cheap.. but
will stop on a halfpence from 40mph (assuming you can stay on the bike!)
[Edited on 6/5/10 by tegwin]
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Russell
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| posted on 6/5/10 at 06:57 PM |
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quote:
Originally posted by bmseven
You only need one disc
We picked up some el cheapo Chinese made wheels with bearings and pneumatic tyres at Stoneleigh for a few quid apiece. The wheels will be on 16mm
stub axles so I thought I'd better go for two brakes, ideally at the front.
This was the caliper I had in mind:
eBay linky
The price is about right!
I'm a bilingual illiterate. I can't read in two languages.
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Paul TigerB6
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| posted on 6/5/10 at 07:16 PM |
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quote:
Originally posted by Russell
The price is about right!
These would be better......... but the price isnt quite so right!! Makes the AP's that Ultima use seem almost a bargain!! 
http://www.evanscycles.com/products/formula/r1-2010-disc-brake-ec021555?utm_source=froogle&utm_medium=froogle&utm_campaign=froogle
[Edited on 6/5/10 by Paul TigerB6]
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Russell
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| posted on 6/5/10 at 07:28 PM |
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quote:
Originally posted by Paul TigerB6
quote:
Originally posted by Russell
The price is about right!
These would be better......... but the price isnt quite so right!! Makes the AP's that Ultima use seem almost a bargain!!
http://www.evanscycles.com/products/formula/r1-2010-disc-brake-ec021555?utm_source=froogle&utm_medium=froogle&utm_campaign=froogle
[Edited on 6/5/10 by Paul TigerB6]
Holy poo poo! Reduced from £209.99!
I was hoping to spend somewhat less than £400 on the brakes 
I'm a bilingual illiterate. I can't read in two languages.
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bmseven
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| posted on 6/5/10 at 10:45 PM |
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quote:
Originally posted by Russell
quote:
Originally posted by bmseven
You only need one disc
We picked up some el cheapo Chinese made wheels with bearings and pneumatic tyres at Stoneleigh for a few quid apiece. The wheels will be on 16mm
stub axles so I thought I'd better go for two brakes, ideally at the front.
This was the caliper I had in mind:
eBay linky
The price is about right!
Would be easier to put the rears on a solid axle with an inboard disc (go kart stylee)
Could probably pick up a small remote brake cylinder from a motorbike cheaply?
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