1. argument for SS

so i was road riding the other day when a thought occurred to me.
modern cars max out on average at 90mph in standard conditions
modern mountain bikes max out on average around 25mph in standard conditions

modern car transmissions have 5-6 speeds
modern mountain bike transmissions have 27 speeds

mountain bikes: why so many gear ratios for such a small range of speed?
it seems to me if cars dont shift every time they reach the next mph why do we?

if six gears on a car = 90mph than 27 gears on a bike = you better be faster than my SS!

this argument may me weak.. and i know someone can shut it down pretty fast. but it was just a idea that came to me, and i thought others might enjoy pondering it.

2. Compare the power to weight ratios of cars to bikes and you should have your answer.

3. My argument is a little more simple. Singlespeed is like running; you naturally expend energy according to the terrain. When you run you do not expend the same energy and/or use the same leg speed on differing terrains. You have a default or comfortable pace on the flats, when you run down hill your pace tends to pick up and when you run up hill it tends to slow. The greatest gains made my man's physical prowess in in the field of running. The marathon runners of today are running 20% faster than they did in the 1920s, with the 2 hour limit probably being broken within the next 5 years. Hence singlespeed taps in to the natural way we were designed to increase strength. Hey, it works for me.

4. man even my 4cyl ranger can go over 90, nevermind my mustang

cars also have a much broader power band. they can run from less than 1krpm to 6krpm on average, while we're usually limited to 10rpm to 200rpm (not acurate, but you get the idea.
It's like a semi truck... they have tons of gears because they only make power over a very small rpm range.

5. Originally Posted by aka brad
My argument is a little more simple. Singlespeed is like running; you naturally expend energy according to the terrain. When you run you do not maintain expend the same energy and/or use the same leg speed on differing terrains. You have a default or comfortable pace on the flats, when you run down hill your pace tends to pick up and when you run up hill it tends to slow. The greatest gains made my man's physical prowess in in the field of running. The marathon runners of today are running 20% faster than they did in the 1920s, with the 2 hour limit probably being broken within the next 5 years. Hence singlespeed taps in to the natural way we were designed to increase strength. Hey, it works for me.
dont you dare make logic of singlespeeding!

What's next... logic of why i ride a pink bike?

6. Cars utilize the speeds that they do because they can make their power over a varying RPM range. They use less fuel at lower RPMS (typically). Many dragsters/funny cars are direct drive. They do have a clutch that slips as they go down the quarter mile and by the end becomes fused from the heat. Two speeds are also common because of their predictability for bracket racing. Regular cars have to fulfill many roles, hence all the gears. Do you road race on your SS setup the same as for mountain biking? Hell no. I have three SS/Fixed bikes, three derailleur geared bikes, and one IGH (8spd Alfine). My geared bikes have gears for hauling stuff, riding through snow, riding places fast then off roading whereever. It's sorta an apples to oranges comparison from the usage standpoint.

7. Originally Posted by ISuckAtRiding
What's next... logic of why i ride a pink bike?
So you can brag about it

8. Originally Posted by chumbox
So you can brag about it
that'd kinda be like bragging about driving a Dawoo Lamos.

9. Originally Posted by ISuckAtRiding
that'd kinda be like bragging about driving a Dawoo Lamos.
touche!

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11. Why the hell do you need to come up with an explanation for it? If you like riding without gears, do so. End of story.

12. Besides ignoring the difference in power vs rpm in humans and for motor vehicles, you're also making the incorrect assumption that bikes have 27 speeds. They actually have 9 speeds combined with 3 different ranges so that there is a lot of overlap between each set of 9 speeds (low-medium-high). A similar setup is found in 4x4 vehicles where you have a high and low range transfer case.

13. huh? I just ride

14. Originally Posted by Thor29
Besides ignoring the difference in power vs rpm in humans and for motor vehicles, you're also making the incorrect assumption that bikes have 27 speeds. They actually have 9 speeds combined with 3 different ranges so that there is a lot of overlap between each set of 9 speeds (low-medium-high). A similar setup is found in 4x4 vehicles where you have a high and low range transfer case.
Good point. The small and large chainrings only effectively add 3 gear ratios each, basically giving you a total of 15 unique gear ratios

15. 25mph in standard conditions

"modern mountain bikes max out on average around 25mph in standard conditions"
HUH?

16. Shifting gears is very distracting. The less distraction you have the more enjoyable the ride becomes.

17. Originally Posted by E !
"modern mountain bikes max out on average around 25mph in standard conditions"
HUH?
i guess he means pedaling on the outer rings at a decent cadence on a flat surface??

i've made my mountain bike go a heck of a lot faster than that on downhills...thats for sure.

18. Originally Posted by TahoeSS
Shifting gears is very distracting. The less distraction you have the more enjoyable the ride becomes.
I agree. I prefer stick shift in my car because driving a car by nature is typically boring, so I like shifting gears to have more to do.

I prefer not shifting on my bike because, well, biking is fun to me and I like being able to crank up a hill not having to worry about a floppy derailleur going everywhere. I mean, I run a tensioner on my converted SS, but I prefer it 100 to 1 over dealing with derailleurs like my other geared bike I have. That poor bike hasn't seen anything outside of the garage since I converted the Diamondback!!

19. My car has one gear: "D"

Less thinky/more bikey

20. hahaha

well this thread got me a few laughs.. i kinda figured you guys would shut me down pretty fast.

3x9 only achieves 15 gear ratios? really? thats dumb.

also i mentioned average mtn bikes top around 25 in standard conditions, i could give a truck about how fast you say you are. ride every trail in the world, figure out top speed on all of them then average. oh yeah and you'd have to have all riders do that and average all the results to get a true answer. thats if you gotta be an ass and question everything. not everyone is as fast as we are. we all take it much more serious than another 1/2 or more of all riders. and who cares if my numbers are wrong? it was just a silly thought i put out there for you wolves to tear up.

also if your mustang is going more than 95mph I'm calling the cops you reckless murderer.

hahaha proud of myself for funny thread, tech talk has bored me lately.

21. tech talk? aw snap, are you in IT support too?

About mph and cops - I once almost rear ended a cop @ 110 mph. I was 16, very stupid, back road, thought I was hot stuff, straightaway, midnight (past curfew)... gahh.

22. Originally Posted by 10speedbiopacefreewheel
3x9 only achieves 15 gear ratios? really? thats dumb.
Well I did have to do a little rounding But to explain more, every gear ratio from the small and large chainrings has an equivalent from the middle ring that is within maybe 2 gear inches, except for the highest and lowest 3 on each end of the spectrum

This page is fun and interesting for looking at gearing and being a bike nerd

23. what?

24. Originally Posted by boomn
Well I did have to do a little rounding But to explain more, every gear ratio from the small and large chainrings has an equivalent from the middle ring that is within maybe 2 gear inches, except for the highest and lowest 3 on each end of the spectrum

This page is fun and interesting for looking at gearing and being a bike nerd
well i checked out that page and got 20... but who's counting?

roasted: once again you prove to be a badass.

25. Originally Posted by 10speedbiopacefreewheel
well this thread got me a few laughs.. i kinda figured you guys would shut me down pretty fast.

3x9 only achieves 15 gear ratios? really? thats dumb.

also i mentioned average mtn bikes top around 25 in standard conditions, i could give a truck about how fast you say you are. ride every trail in the world, figure out top speed on all of them then average. oh yeah and you'd have to have all riders do that and average all the results to get a true answer. thats if you gotta be an ass and question everything. not everyone is as fast as we are. we all take it much more serious than another 1/2 or more of all riders. and who cares if my numbers are wrong? it was just a silly thought i put out there for you wolves to tear up.

also if your mustang is going more than 95mph I'm calling the cops you reckless murderer.

hahaha proud of myself for funny thread, tech talk has bored me lately.
how's the whole "posted a thread and everyone proved my theory to be retarded so i'm gunna play it off like i was joking the whole time" thing working for ya?

26. don't feed the troll

27. Originally Posted by threebikes
don't feed the troll
whatever dude.

28. yes it is

29. Powerband of most legs is around 30 rpm give or take. Powerband for a car is around 3000 rpm give or take.

30. Wow... 30 rpm??? Surely a decent cyclist can make power over a greater range than this? I push SS gears up steep hills at 30-40 rpm and take the bike up over 22 mph at 100+ rpm even up a mild grade or into a headwind. I suppose one would have to use one of those power meter things, but a 30rpm power range seems pretty narrow.

Granted, lots of cyclists have never ridden road or track, so don't have great spinning technique. How does this affect powerband, if at all? How about someone who spent lots of time training at 130-150 rpm for velodrome racing? When they come to a mtb, do they have a broader powerband because of the broader range they can spin?

31. i can hit 200+rpm, but there's a difference between max rpm and powerband. The powerband is the area of rpm where you develop the most power. You cannot put down the same torque at 100rpm as you can at 30rpm.
A car's powerband is usually in the 4-6k range for larger displacement gas motors.

32. my heart is at 67 bpm right now. Erect is at 89 bpm - eating bom boms, at 50 bpm.

33. Does not computer.

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