Gear inch/ratio question

I should mention thanks to the Freshtripe Blog for pointing me in the direction of ^that^ link.

46x18 gives you a healthy 18 skid patches

:)

how do you make that widgit thingy show up on your dashbord? my mind is fried and i cant make it work via drag and drop

Don't be wimps...

I was idly thinking about skid patches last night on the way home. Although having a prime number sprocket is good for getting lots of patches, it ain't perfect. For example, running 51 x 17 only gives 3 skid spots. However, a prime number toothed chain ring would always give loads of spots.

So, why can't you get a 47 tooth chain ring which would always give 47 spots, I think?

chris crash how do you make that widgit thingy show up on your dashbord? my mind is fried and i cant make it work via drag and drop

click on it dumbass

mashton I was idly thinking about skid patches last night on the way home. Although having a prime number sprocket is good for getting lots of patches, it ain't perfect. For example, running 51 x 17 only gives 3 skid spots. However, a prime number toothed chain ring would always give loads of spots.

So, why can't you get a 47 tooth chain ring which would always give 47 spots, I think?

No it is the denominator that tells you how many skid patches you have. A prime chainring would mean you would have as many skid patches as teeth on your rear cog. Or twice if you skid with both feet.

Ahhh, yes, good point Tommy. But, even given that, it would allow you to always have the 'maximum' numbe of spots for your sprocket.

I want a 47t chainring and won't be happy till I have one...

Maybe.

2 primes is always better than one.

Oh yes 47 is the best!

Or 2^(32582657) -1 but that may make it a bit difficult up hills.

@mashton, i got a 47t gebhardt, and am pretty happy with it :)

What would a 47:17 give you as they are both primes!?

34

34 with both feet

i win

right, so chainRING not chainWHEEL. Good that we've got that sorted.
So, I bought an 18 th rear sprocket and a have some spare chain links and a lockring.
Should I put the new sprocket on the other side of my double fixed hub? Or take the old one off and replace with the new one?

chris crash how do you make that widgit thingy show up on your dashbord? my mind is fried and i cant make it work via drag and drop

Go into your Mac's Library/Wigets folder. Drop it in their. Then next time you open Dashboard... it's their.

Bought myself a chain whip today and went from 42:13 to 42:15. Slightly less godly me thinks. Changing the ring off the cassette hub with the whip is so much easier!

haj

damn... i think i just bought that crank set... fucking expensive that was - apparently you have to pay per whole, or some shite.

... is it me, or does it look like his left knee intercepts the top tube and handlebars? aka, pshot up in this beotch?

I'm currently using a gearing of 42x15 (75") on my fixed around Richmond Park. Going around anti-clockwise uphill is enjoyable, but going clockwise up the steepest hill is a bit of a struggle, but doable. Is this gearing too high for RP? I'm Interested to know how other find RP using their fixed gear ratios and directions.

I used to run the same gearing on the Soma and it was doable as you say but not the grind I wanted. Now 42x16.
That's the only fixed I'd bother taking to RP as it's setup much like my road bikes.

Depends how fast I want to ride. Anti-clockwise, 67.5" for ambling, 71.5" for general, 81" for time-trial pace.

I'd use the same 3 gears for specific hill-training on the clockwise steep bit: 67" for lungs and seated stuff, 72" for explosive power, 81" for arm/leg/back strength building.

You're closer to 74", for the record (if you're on 23s).

I go round clockwise on my way to work.. 44x16, 23mm tyres
Sometimeson Mondays that steep hill beats me. Getting better though. :-)

75'' for me, its a struggle on some hills, but possible... and it keeps the legs spinning on the downhills!