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Singlespeed & Fixed Gear "I still feel that variable gears are only for people over forty-five. Isn't it better to triumph by the strength of your muscles than by the artifice of a derailer? We are getting soft...As for me, give me a fixed gear!"-- Henri Desgrange (31 January 1865 - 16 August 1940)

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Old 04-25-07, 10:53 AM   #1
The_B.O.C.
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brakes on non-machined rims?

i'm looking to buy a wheelset off eBay. they are non-machined, but i like to use a front brake. can i get away with using a brake on a non-machined deep rim? is this a really bad idea? what kind of problems would it cause?
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Old 04-25-07, 10:56 AM   #2
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until your brake pad wear off whatever finish or paint is on there they won't be all that effective and even when the paint is gone they probably won't brake as well as on a machined rim
other than that it will be fine
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Old 04-25-07, 11:01 AM   #3
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Peter White usually has good info. This page(about 1/3 of the way down) says:

"The rim on the right is painted Egglant Purple. So is the rim on the left, but it has had the paint and an extremely thin layer of metal machined off the braking surface. This results in a very smooth surface for the brakes providing good control and no thumping of the brakes with each revolution of the wheel. Also, brake pads don't work well on a painted surface. Brakes will work well on an anodized surface, so you can use the non-machined anodized rims with caliper brakes. But your brakes will work better with the machined sidewalls. The important thing is to never use a rim brake on a non-machined rim that has a painted finish. Anodized is fine. Painted is not ok. So if you're choosing a painted finish and you'll be using rim brakes, be sure to order a machined sidewall rim."

I'm sure there is more info out there, but this would be good enough for me.
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Old 04-25-07, 11:15 AM   #4
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i have a set of the anodized blue deep v's and when i use the breaks hard then it squeals pretty loudly. I am told that squeak will go away after time. i mostly try to control my speed with my legs though. i mainly just use the brake on steep hills. so i use a combination of both leg back pressure and a little break and i am able to control my speed without any squeaking. one other draw back is that the brake pad is rubbing off on my pretty rim
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Old 04-25-07, 11:20 AM   #5
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I used a front brake on a non-machined rim. I didn't notice any big decrease in performance. The rim started to look a bit chewed up after a while though.
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Old 04-25-07, 12:11 PM   #6
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a roller skating jam named saturdays.
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Old 04-25-07, 12:23 PM   #7
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Quote:
Originally Posted by tbrtbx
a roller skating jam named saturdays.
i have no idea what you are referring to but i was just watching this rollerskating video
http://www.youtube.com/watch?v=WFACpd4ow64
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Old 04-26-07, 12:54 AM   #8
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Rivendell makes some good points about why non-machined rims might actually be preferable to machined rims, along with some interesting background on how rims are made: http://www.rivbike.com/tires/our_approach_to_rims

It sounds pretty smart, at least. ;-)

I have non-machined rims and my front caliper works great.
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Old 04-26-07, 10:22 AM   #9
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i run a brake on my painted non-machined rims. they start to look nasty after a while. they squeal for a while, but i only use my brake as an assistance for my legs. i've yet to run into much trouble, but i also don't fly around everywhere near as fast as many others i've seen.
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Old 04-26-07, 10:42 AM   #10
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de la soul man. come on now
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Old 04-26-07, 10:48 AM   #11
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de la soul man. come on now
Thank You
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Old 04-26-07, 11:09 AM   #12
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Quote:
Originally Posted by barto
i have a set of the anodized blue deep v's and when i use the breaks hard then it squeals pretty loudly. I am told that squeak will go away after time. i mostly try to control my speed with my legs though. i mainly just use the brake on steep hills. so i use a combination of both leg back pressure and a little break and i am able to control my speed without any squeaking. one other draw back is that the brake pad is rubbing off on my pretty rim
Hey (hijacking thread here) -
I've got an old Panasonic frame I'm building up and am thinking about some electric blue Deep Vs...by looking at the attached pic, think the Deep V blue matches close to the blue frame?
Attached Images
File Type: jpg 8657_12.JPG (45.1 KB, 24 views)
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Old 04-26-07, 11:26 AM   #13
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someone looking at that pic and matching to real-life deep v's = you looking at a pic of deep v's and matching to your real-life bike
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Old 04-26-07, 11:33 AM   #14
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Quote:
Originally Posted by coelcanth
someone looking at that pic and matching to real-life deep v's = you looking at a pic of deep v's and matching to your real-life bike

Good point; brain cells have been diminishing
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Old 04-26-07, 11:38 AM   #15
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http://www.sheldonbrown.com/brandt/machined-rims.html

This doesn't apply to rims with paint, powder coating, or whatever. But for a bare non machined rim there is no issue at all.
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Old 04-26-07, 11:40 AM   #16
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This used to be non-machined but it's now worn down to look like machined. Works fine.http://s157.photobucket.com/albums/t...t=IMG_1801.jpg
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Old 04-26-07, 11:56 AM   #17
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well, it turns out the wheels i was looking at are painted, not anodized. but i rarely use the brake...
i think i'll just save the extra bit to get some machined deep vs.
thanks for the replies.
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Old 04-26-07, 12:11 PM   #18
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i did it when i ran a brake. its fine. from a distance, your rim will look like its machined after about a week of braking. up close, its kinda gross. functionally, i never had a problem, but i don't brake that hard, and when it starts squeaking on you (it will. loudly), people will know you're coming when you roll up on 'em.

but whatever. you could always do machined front, non-machined rear.
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