![]() |
|
|
Thread Tools | Display Modes |
#1
|
|||
|
|||
![]()
"Ken Bessler" wrote in
: Herin lies the problem - I'm running out of gear - I mean on a slight downhill or with a tailwind I top out at about 23-25 mph and I feel like I need more gearing. I'm in 10th gear and peddaling like mad and my legs feel like I'm in 5th gear or so. Learn to pedal faster and more smoothly. A 52-13 gear is pleanty fast enough to get you up to 40mph if you pedal at a good cadence. Serious recreational riders should be able to get up to 200 rpm for short sprints. Even pro racers use only slightly faster gears than what you have (maybe 1 more tooth in front and 1 less in back). |
Ads |
#2
|
|||
|
|||
![]()
On Fri, 5 Sep 2003 16:15:27 -0600, Ken Bessler wrote:
few months. That and a proper diet has dropped my weight from a high in march of 298 to 231 now. Congrats! I wish I could lose weight as easily. for a replacement then stopped in the Salvation Army. I saw a Bianchi road bike for $35. I figgured if I avoided the Wow, great find. Maybe I'll start hitting those Salvation Army stores... And what wierd handlebars! Shaped like regular road bike bars but with the brake cables hidden in the wrapping. I This is the standard now. thought this was just for looks untill I saw a pic of Lance Armstrong riding with his hands on the back of the brake handles. It was then that I realized why they are that way. The rubber grip on the back of the brake handle is referred to as the "hood", and you are said to be "riding on the hoods" when your hands are there. It is a comfortable, useful, and safe place for your hands. It's probably where my hands are most on my road bike. Nice bike! It's my first road bike, with 700x23 mm tires rated for 115 psi (Yikes!!!). A local bike dealer suggested running with 85-90 psi untill I lost more weight - he was worried that I'd be breaking spokes. He appraised the bike at $500.00 new and said it was a 1994 model or thereabouts. Unless it has exotic, low-spoke-count wheels, or rotting tires, I'd pump it to the 115 psi max. I'd be more concerned with pinch flats (when the tube gets cut between the rim edge and the tire, due to underinflation) and worse, rim dents from those potholes. What gets me is how much faster and farther I can ride Yup, you have the proper equipment for the conditions: a road bike for the road. It is designed for the road, and is significantly faster for a whole slew of reasons. Herin lies the problem - I'm running out of gear - I mean on a slight downhill or with a tailwind I top out at about 23-25 mph and I feel like I need more gearing. I have this problem, though at higher speeds, too. I'm in 10th gear and peddaling like mad and my legs feel like I'm in 5th gear or so. In cycling discussions, it's more common to refer to the size of the individual gears, so in 10th, you probably mean 52x13. In 5th, you maybe mean 38x13 or 52x29 or something. Can I change out the gears to get a taller setup? The Short answer: yes. For least expensive results, you will need to find a compatible "freewheel", which is probably the type of gears you have on the rear (the other type is a "cassette"). Or, you may be able to replace your large chainring (the 52) with a larger one (a 53). This may turn out to be both easier and cheaper, and possibly less compatibility issues. See http://www.sheldonbrown.com/ for in-depth technical info. There are multitudes of other very useful sites around too. in the rear is 13 teeth. Is this 52/13 a fast ratio or a hill climb setup? That's a controversial question, believe it or not. There are people here who will tell you that you can't possibly be strong enough to need a taller gear than that. Others, like myself, know it's easy to make use of it for some people. To say something is a hill climb setup, you would need to specify it's lowest gear combo, not it's highest. 52/13, IMO, is a conservative hill descent setup. I use 52/13 on flat land comfortably, and want for more when descending (and maybe someday I'll stop saying that and actually do it). How do I know which model Bianchi I have? It just says "Bianchi" on the stickers and "Limited" stamped into the ends of some of the frame tubes. The bike's VIN is JS11101....... Somebody else might be able to help with that by serial number, but you'd probably be better off putting photos of it on a website so people here can look at it. Also, look for details that could identify it, like exactly what equipment is on it (brands of parts, etc), then post whatever info you find. You might try rec.bicycles.tech. Ken -- Rick Onanian |
#3
|
|||
|
|||
![]()
David L. Johnson wrote:
Lower pressure does not save the spokes. Bigger tires (then at lower pressures at which a bigger tire can still support you) will help save spokes. I still don't understand how tire pressure/size would have any influence on the spokes life. Could you explain? -- Frederic Briere * = IS NO MO http://www.abacomsucks.com = |
#4
|
|||
|
|||
![]() "Ken Bessler" wrote: It's my first road bike, with 700x23 mm tires rated for 115 psi (Yikes!!!). A local bike dealer suggested running with 85-90 psi untill I lost more weight - he was worried that I'd be breaking spokes. He's insane. Heavier riders should rum higher pressure to avoid pinch flats from pot holes, etc. Run them at 115 psi. If you replace the tires, consider 700x25 or 700x28 if they will fit the frame. Then you can run a little less pressure, and enjoy a more comfortable ride. Herin lies the problem - I'm running out of gear - I mean on a slight downhill or with a tailwind I top out at about 23-25 mph and I feel like I need more gearing. I'm in 10th gear and peddaling like mad and my legs feel like I'm in 5th gear or so. How fast are you pedaling? Most experienced cyclists can spin 100+ rpms. Even with a 52x13 gear ratio, that should get you around 30 mph. That kind of gearing was standard for years. Today, taller gears (53x12 or 53x11) are sometimes used. I'd recommend keeping what you've got. Work on developing a smooth spin. Art Harris |
#5
|
|||
|
|||
![]() "Harris" wrote in message . net... "Ken Bessler" wrote: It's my first road bike, with 700x23 mm tires rated for 115 psi (Yikes!!!). A local bike dealer suggested running with 85-90 psi untill I lost more weight - he was worried that I'd be breaking spokes. He's insane. Heavier riders should rum higher pressure to avoid pinch flats from pot holes, etc. Run them at 115 psi. If you replace the tires, consider 700x25 or 700x28 if they will fit the frame. Then you can run a little less pressure, and enjoy a more comfortable ride. Herin lies the problem - I'm running out of gear - I mean on a slight downhill or with a tailwind I top out at about 23-25 mph and I feel like I need more gearing. I'm in 10th gear and peddaling like mad and my legs feel like I'm in 5th gear or so. How fast are you pedaling? Most experienced cyclists can spin 100+ rpms. Even with a 52x13 gear ratio, that should get you around 30 mph. That kind of gearing was standard for years. Today, taller gears (53x12 or 53x11) are sometimes used. I'd recommend keeping what you've got. Work on developing a smooth spin. Art Harris Thanks, Art - developing a higher spin rate (around 95) seems to be the general concensus. I'll work on that. At my current fitness level I'm running about 60-70 but I didn't know about cadence so I was selecting gears based on effort. This meant I was running a faster gear selection and lower cadence. I'm going out today to buy a Cateye Astrale 8 computer with cadence. I was planning on using my high end ($339.00) GPS unit to tell me speed and via a chart I made to tell me cadence based on MPH vs gear selection but I figgured that might be a little distracting. I'll use the Astrale for cadence and the GPS for speed, distance to destination, mapping, points of interest and eta. BTW the GPS unit is a Garmin Etrex Vista. I can look up my local bike shop and get the range, eta, address, phone # and plot it on the map! Also, my tube is a 700x23 but I just looked and my tire is a 700x25 - is that a problem? Ken |
#6
|
|||
|
|||
![]() "Ken Bessler" wrote: Also, my tube is a 700x23 but I just looked and my tire is a 700x25 - is that a problem? No, that will work fine. And if the tire really measures 25 mm wide (sometimes the size on the label isn't accurate), that's an advantage. Art Harris |
#7
|
|||
|
|||
![]()
On Fri, 5 Sep 2003 22:36:13 +0000 (UTC), Ken wrote:
Learn to pedal faster and more smoothly. A 52-13 gear is pleanty fast enough to get you up to 40mph if you pedal at a good cadence. Serious 37.5 mph @ 120 rpm for 700x23c tires, according to the Sheldon gear calc. So, 52x13 is sufficient for 40 mph for people who want to spin up to [130?] rpm or so. recreational riders should be able to get up to 200 rpm for short How do you define "recreational"? I can't imagine 200 rpm at all. My legs feel like they'll fly off at 150! I certainly am not (and don't need to be, given tall enough gears) smooth past 125 rpm. While he could certainly pedal faster, he could also enjoy taller gears and put more pressure on the pedals if he so pleases. sprints. Even pro racers use only slightly faster gears than what you have (maybe 1 more tooth in front and 1 less in back). 53x11 is the tallest _common_ gearing, for racers and recreationalists alike, AFAIK. Of course, racers have different reasons to use 53x11 than non-racers... -- Rick "Didn't we have this thread already?" Onanian |
#8
|
|||
|
|||
![]()
On Sat, 6 Sep 2003 05:31:37 +0000 (UTC), Ken wrote:
A track sprinter can probably hit 300 or 400 rpm. I've done over 250 rpm Wow! and I'm no racer. Remember that the original poster was talking about riding down long hills, so you're not going to have much pedal resistance, even in your big gears. I find that when I have no pedal resistance, I am unable to add speed no matter how fast I crank. Why bother cranking 200 rpm if it's not going to add speed, or at least feel like it's adding speed? -- Rick Onanian |
#9
|
|||
|
|||
![]()
Well, I went out and spent some riding time and riding $$$. Looked
up Performance Bicycle in the phone book. 2540 s. Colorado Blvd. Nice. Looked up that address on my GPS and plotted it. 3.74 miles each way - nice little ride. Unfourtunatley Murphy's law kicked in - I forgot to note the "s" in the address - wound up going to 2540 NORTH Colorado! D'oh! Then went to 2540 S. Colorado (6.18 miles away). Finallly got to the store, picked out a Cateye Astrale CC-CD 100 N II. $24.95 not bad. Also picked up 2 "Slime" self healing tubes $7 ea. Went home, tallied up my riding distance with the GPS unit - 18.4 miles! I had planned on 7. Plus, what's worse, S. Colorado is a roller coaster of a ride - hills steep enough for 1st gear but not steep enough to stand up on the pedals. Crested one hill in 1st gear @ 8.4 mph then coasted down the other side (still in 1st) - hit 31.4 mph! Man I was praying for no potholes at that speed! I need a helmet...... Got home, installed the Cateye computer - no problems. Went on a 2.41 mile test ride and I was suprised - I found I could keep a constant cadence of 80-85 pedal rpm. Not too shabby for a begginer! I found I could keep up the sacred, suggested average pace of 90-95 rpm for 2-3 minute bursts (not bad after such a tough morning ride!) and at one point I made a speed burst and hit 135.7 rpm! Man, having a bike computer that measures cadence rocks! Anyways, that's the activity for Saturday morning - I'm gonna have chili for lunch.....starved and a little pooped! Ken |
#10
|
|||
|
|||
![]()
Ken Bessler wrote:
other side (still in 1st) - hit 31.4 mph! Man I was praying for no potholes at that speed! I need a helmet...... Perhaps you do, if prayer is your method of pothole avoidance. . . -- Benjamin Lewis Although the moon is smaller than the earth, it is farther away. |
Thread Tools | |
Display Modes | |
|
|
![]() |
||||
Thread | Thread Starter | Forum | Replies | Last Post |
Random thoughts about bikes (really long)..... | Buck | General | 3 | August 30th 03 09:20 AM |
Considering a Road bike for commuting... good idea? | Mike Beauchamp | General | 116 | August 18th 03 11:44 PM |
hybrid bikes | Doug Purdy | General | 8 | August 10th 03 05:20 PM |
Looking for a cheap road bike | Mike Jacoubowsky | General | 8 | August 7th 03 12:12 AM |
Do they Make Kids Road Bikes | Privatelife | General | 10 | July 24th 03 01:20 PM |