Help me build a bike! - Health, Fitness, and Sports

1000Knives What Would Brian Boitano Do? Joined: Jul 09, 2011 Age: 21 Posts: 2472	Posted: Wed Sep 05, 2012 11:13 pm?? ?Post subject: Help me build a bike! So I got a relatively nice Motobecane frame, but the cassette stripped off the threads on the rear wheel, so the rear wheel is unusable now. So I need a new rear wheel and I'm wondering what to do. It's an older bike, so it's running 27 inch tires. I have a set of VERY nice older 27 inch tires I found in the trash (new with tags) that I could use. So basically I'm wondering if I should stay 27 inch for the back wheel, or put a 700c back wheel on? If I put a 700c back wheel on, it'll probably not have a 700c front wheel on, at least for a little bit of time. So there's that to keep in mind. Also, for 700c, how narrow should I go for street riding? Also, I plan to just make it a single speed bike. Does anyone have any good ideas on gearing to use? My town is fairly hilly, not like, say, Vermont, but not flat either. I have a 3 speed that works with a Sturmey Archer hub, but the gearing on that is ridiculously tall for where I live. Plus it seems like a single speed bike would just be less complicated crap to deal with. No, not gonna go fixie, at least on this bike, I got other frames if I wanna do that. I'm a 195lb rider, not a super fast rider by any means, so it's hard to say, but I'm wondering what sprocket teeth numbers you'd recommend. I tend to not like spinning high RPMs, too. Let's see, what else... uh, anything else I'm missing? I'm rusty at this. _________________ But it was all right, everything was all right, the struggle was finished. He had won the victory over himself. He loved Big Brother.
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auntblabby Chief Assistant to the Assistant Chief Joined: Feb 13, 2010 Posts: 14652 Location: the island of loveable toy humans
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1000Knives What Would Brian Boitano Do? Joined: Jul 09, 2011 Age: 21 Posts: 2472	Posted: Thu Sep 06, 2012 2:02 pm?? ?Post subject: Well I already own a 3 speed hubbed bike, 3 actually, with one currently working, one needs a tab to hold the axle in place that's ridiculously hard to find, and another needs to be like...put back together, the whole hub. http://ventouxbikeshop.com/wp-content/uploads/2010/05/columbiaSports3-1024x768.jpg The big problem I have with that bike is the gearing is ridiculously tall on it, so going up hills even in 1st is a big pain, so maybe I can make things better with a new front sprocket, but I do want a proper roadbike, too. But I already own that, and it's currently what gets rode. I want something, you know, racier. http://novabicycles.com/SuperMirageb.jpg And that'd be the frame it'd go on, and I'd be keeping dropdown handlebars. So I'd want a proper road bike. _________________ But it was all right, everything was all right, the struggle was finished. He had won the victory over himself. He loved Big Brother.
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conan Phoenix Joined: Jul 14, 2009 Age: 25 Posts: 726	Posted: Thu Sep 06, 2012 10:41 pm?? ?Post subject: you could try a few rear sprockets to find what you like. the best way to decide as far as i'm concerned. they usually only cost about ?3 each in the uk. i'd reccomend a 700c wheel as getting spares will be easier and probably cheaper. tyres are fairly cheap. i guess it depends what you can find for cheap. one possibility is a flip flop hub where you have a fixed gear on one side and a single speed freewheel on the other side. i'd tend to go for slim slick road tyres but if your going to be carrying heavy loads or riding on really bad roads you might want larger tyres if your frame is not 700c then you may have problems with brake alignment. should be ok as they are quite similar sizes yeh? if you want a larger tyre you may need caliper or v brakes rather than the standard road bike brakes. obviously disk brakes kick ass but will add a lot more onto your build make sure you get the fit right and consider what height bar and length stem you may need before you commit to any major purchases a nice saddle is a good idea but i've never bought one myself cable sleeve length is important, there are plenty of tutorials on how to do it right look over your frame for rust and consider treating it before you build it up. for the winter you may want to prep and wax some components to protect from salt and water i'd say definitely go for alloy over steel wheels as they are a lot stiffer which i'd say is important for a high torque drivetrain put up some pictures
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1000Knives What Would Brian Boitano Do? Joined: Jul 09, 2011 Age: 21 Posts: 2472	Posted: Fri Sep 07, 2012 4:06 am?? ?Post subject: So I did a bit more reading and considering. I already own two brand new 27 tires, so 27 it's gonna be. The 27 tires are wire beaded Continentals, 27x1 1/8, 120PSI pressure. So I think I'll stick with 27 I guess. So the bike for it's smaller gear (it's a 10 speed) is 38 teeth, so I'm thinking of going 16 in back. So that'd be 2.375:1 gearing. Seems decent for me. But, going 27 seems most logical, since I already own the tires and it'd save me a decent amount of cash in tubes and tires and related. Also, no need to buy another front sprocket either. So more cash saved. Still is gonna be a $60 project. Gonna just keep the 3/32 chain. As far as a fixie/single side by side kinda hub, the only issue with that is, I'd have to build a wheel, instead of buying one off the shelf. I can't even true wheels myself. So too much cash to get one built if truing one is like $10-15. And yep, no steel wheels. Though I guess I'll keep a steel wheel in front, and the front tire will be the 90PSI old ones, and rear will be 120. I've never had a road bike tire die of treadwear either, only have killed MTB type tires that way. Once I had a sidewall blowout, though, on nice thin Bontrager sports in 26x1 3/8 (arguably not too sporty of a tire size, but man those were fast tires.) _________________ But it was all right, everything was all right, the struggle was finished. He had won the victory over himself. He loved Big Brother.
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