|Why am I a chicken of a fixed century?||bigrider|
Aug 7, 2003 10:41 AM
|I am riding a 107 mile ride to the beach tomorrow. I almost made the decision to go fixed but got talked out of it by the gearheads. There are five of us going and it is a dead flat ride.
What is a good ratio for a flat century? I have a 48/19 setup because I commute a little by fixed and have some 12 percent stuff to deal with.
|My longest SS/fixed is 85 miles...||Dave Hickey|
Aug 7, 2003 10:50 AM
|A century wouldn't be a problem. I run 45-17 which translates to around 70 gear inches. I'd probably go 45-16 if I ws riding in a group on flat roads. My maximum cruising speed on a 45-17 is around 20mph. If your buddies ride faster, I go with higher gear inches than 70.|
|I'm searching for the right gear too...||PdxMark|
Aug 7, 2003 11:19 AM
|To do a 500 mile, one week tour. There are some flat days, one day with 7000' of climbing (mostly reasonable grades), and one century day. In getting ready for the ride, 48/19 (68 gear inches) felt good for cruising, and some of the climbing, but it left my knees a bit sore. I over-compensated to 44/19 (62 gear inches), which spun me out at too slow a speed. Now I'm trying 44/18 (66 gear inches), which is for now feeling just right.
Friends that I ride with will cruise at about 18 mph on flats, which the 48/19 does well. If you're doing a faster cruise, a 48/18 might work better. I'm planning on a fixed century in a couple weeks (before the week-long trip). It'll be a challenge, and I might blow up (it has 10k feet of climbing), but fun to try to do.
Give the fixie a go with your friends - if you have gearing to match the pace you expect. As with any century, the first 50-80 will be fairly easy. Then you only have 20 to go!
|Changing gearing isn't a big deal on my bike||bigrider|
Aug 7, 2003 11:43 AM
|I may get a wild hair tonight, change it out and go. You can see that the fixed hub I use is a welded 9 speed shimano deal that uses spacers and a single cog. Chain whip, different cog, and presto another gearing ratio.|
|That is ingenius. (nm)||onespeed|
Aug 7, 2003 11:49 AM
|Wow... very very cool! so you don't...||PdxMark|
Aug 7, 2003 11:57 AM
|have to stand on the chain whip to remove a tight cog, like I did this morning... Hmmm... Someone with such a cool set-up NEEDS to ride that century!|
|Changing gearing isn't a big deal on my bike||Dorf411|
Aug 7, 2003 12:02 PM
|Welded 9spd freehub? I did this to a 105 freehub and tried it and it toasted my hub in about 8 miles. I had to finish my commute to work on the Trolley which was very close to my break down spot. I know I had the hub body on good and tight but for some reason the hub body came loose and bound up. So you haven't had any problems with this setup?|
|I have over 600 miles on it so far||bigrider|
Aug 7, 2003 12:28 PM
|and have had no problems. I degreased before I had it welded. Also, it was welded around the seam on the backside (The side closest to the spokes. I didn't remove the cup, just cleaned it after the welding to remove some dripped grease residue and repacked. The pic shows where the weld is but this was not the shimano freehub it was a generic hub.|
|that is darn ingenious||cyclopathic|
Aug 7, 2003 5:15 PM
|I have an old hub with toasted freehub.
PS. and if I put old deraileur, I can have as many gears as I want. Just use adjustment screw to tune in :)
|re: Why am I a chicken of a fixed century?||LC|
Aug 7, 2003 11:21 AM
|48/17 would probally work well for you.|
|Dont be, I just finished 167 miles on 42x16 fixed w/hills. (nm)||onespeed|
Aug 7, 2003 11:38 AM
|What Beach? nm||boyd2|
Aug 7, 2003 12:00 PM
|Elkton, Md to Rehobeth, De following bike route 1 nm||bigrider|
Aug 7, 2003 12:22 PM
|I did Kent Island MD to Bethany Beach DE last week||boyd2|
Aug 8, 2003 5:33 AM
|I was a great ride other then the head wind and the rain.|
|Bonnet Shores (nm)||onespeed|
Aug 8, 2003 5:58 AM
|Go for it, I'm doing two SS centuries this weekend and they||chopper|
Aug 7, 2003 12:09 PM
|will be my very first two. My gearing is 42x16, I encounter some hills around here and I've found a good rhythm with that choice. I'm actually riding from Seattle to Victoria, Canada and there will be a couple ferry rides to break things up. Sunday looks like rain and the SS is the rain bike, therefore, its getting used this weekend.|
|Don't be ...||Humma Hah|
Aug 7, 2003 2:34 PM
|You know those guys better than we do. I run 48:17 myself, rarely encounter anything beyond about 6% but have done sustained climbs at 8% in a comparable SS gear.
If these guys are go-fast racerboys, they'll probably toast you in a 5-mile TT using the dinky little cogs on the outside of their corncobs. If they're doing 2-minute pulls in a paceline for 107 miles at 2 bpm below AT, they may drop you. For any kind of a sane, enjoyable century pace, I'd think your gearing is OK, maybe just a couple of teeth smaller in the rear to take full advantage of the flat terrain, but I wouldn't let that stop you if you don't have it handy.
Are you sure it is dead flat? Our coastal rides in VA sometimes have some fairly wicked ravines: short, steep valleys with a little stream in the bottom of each one. Some of those hit 15% or so, for maybe 10-50 ft of climbing.