# Singlespeed & Fixed Gear - skid / spin zones?

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View Full Version : skid / spin zones?

donotpanic
09-02-05, 12:08 PM
What's the deal with these? What does having '16' skid / skip zones (according the one online calculator of it) for a 49-16 ratio mean when compared to having '1' skid / skip zone for a 48 -16 ratio?

pitboss
09-02-05, 12:17 PM
more is more.

logic = love

crushkilldstroy
09-02-05, 12:35 PM
it basically means you'll have to spin your tire less. skidding in one spot every time (or 2 if you can skip/skid with either foot forward) will eat the crap out of that one part of your tire while leaving the rest intact.

pwarre20
09-02-05, 01:32 PM
where is this calculator?

stevo
09-02-05, 01:38 PM
just ride.

lz4005
09-02-05, 01:44 PM
What's the deal with these? What does having '16' skid / skip zones (according the one online calculator of it) for a 49-16 ratio mean when compared to having '1' skid / skip zone for a 48 -16 ratio?

It means the number of places on your back tire that could be in contact with the ground when you skid. There is math involved that can get complicated, but basically you want the ratio between the cog and chainring on a fixie to not be a whole number. With 48/16 the rear wheel goes around exactly 3 times for every revolution of the cranks. You skid on the same spot every time. 49/16 gives 3.0625 revolutions, so every time you end up with a different part of the tire on the ground.

jayrooney
09-02-05, 01:47 PM
has anybody ever worn through or seen a dramatic amount of wear on a tire in a single spot from skidding skipping?

carleton
09-02-05, 01:51 PM
has anybody ever worn through or seen a dramatic amount of wear on a tire in a single spot from skidding skipping?

My buddy has a spot on his rear tire that's so flat you could set a Coke can on it..

pwarre20
09-02-05, 02:01 PM
I need a new rear tire every month or two due to tire wear

I would occasionally blow out a tire due to excessive wear in a single spot, until I switched to armadillos

pwarre20
09-02-05, 02:08 PM
http://static.flickr.com/32/39606767_9eed9c65e6_m.jpg

ostro
09-02-05, 02:10 PM
hmm...2 tires a month. Seems to justify putting a hand brake on. lets say you spend 20 bucks on each tire thats 40 bucks a month.

\$480 a year on tires alone!

brake pads = \$5-15 year and tires last several months.

jim-bob
09-02-05, 02:12 PM
hmm...2 tires a month. Seems to justify putting a hand brake on. lets say you spend 20 bucks on each tire thats 40 bucks a month.

\$480 a year on tires alone!

brake pads = \$5-15 year and tires last several months.

Yeah, but then you lose the magical ability to know what everything around you is going to do.

ostro
09-02-05, 02:14 PM
Yeah, but then you lose the magical ability to know what everything around you is going to do.

Thats a state of mind that can be reached with or without brakes.

jim-bob
09-02-05, 02:18 PM
Thats a state of mind that can be reached with or without brakes.

That's dangerous talk around here, friend.

pwarre20
09-02-05, 02:19 PM
one tire a month, rear only, so \$240 a year... it's a small price to pay,

I still want to know where this online calculator is, anybody know?

ostro
09-02-05, 02:23 PM
http://www.optionnz.com/users/afs/i1/FixedRatio.jpg

BostonFixed
09-02-05, 02:25 PM
I think that that chart ranks as one of the best things ever posted on this forum.

[thanks noisebeam!]

pwarre20
09-02-05, 02:28 PM
If I understand this right...

If I was running a 48-16, and switched to a 47-16, there would be 15 more skiddable spots on the tire, which would in theory prolong the life of the tire?

ostro
09-02-05, 02:30 PM
That's dangerous talk around here, friend.

I know and everyone has their own path to nirvana!

I rode a motorcycle around town for the last 6 years, the knowledge transferred well.

BostonFixed
09-02-05, 02:35 PM
If I was running a 48-16, and switched to a 47-16, there would be 15 more skiddable spots on the tire, which would in theory prolong the life of the tire?
Yes. Because the wear is distributed randomly over 16 spots on the tire, thus prolonging your tire life.

stevo
09-02-05, 08:52 PM
"one tire a month, rear only, so \$240 a year... it's a small price to pay,"

small price to pay for what? i'd rather spend less money than more.

manboy
09-02-05, 09:20 PM