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Three things to check: 1, Is the bead seated correctly. It's pretty common to get tyres blowing off the rim if they're not seated correctly. That said, this usually leads to an exploding tube rather than the tyre just coming off 2, As Daniel R Hicks said, are the rims so worn they're expanding? 3, Check the rim for dings and warping as Malarky sort of says, ...


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Would you really want to ride on these tires that are falling apart? You need new tires. You may have to order. Biketiresdirect.com has 27s. Make certain the rim has no defects that prevent the tire bead from holding. Make certain the tires are seated all the way around the rim (pay particular attention to the area around the valve) and the tube is not ...


1

Many bicycle chains use different platings for the inner and outer links. Inner links are typically plated with a nickel/Teflon surface. Outer links will only get a nickel plating. The extra Teflon coating helps the inner surface of the chain glide over the cogs on the cassette. Here is a video of the manufacture process: ...


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As Pete H has commented, a partial swap will probably not work out. On frames / bikes of this age, things were easier as compatibility was not quite so much of an issue, so some elements could probably work together OK - but if you are not sure / inexperienced, best is to swap everything. Worth checking, though, that the threads for the bottom bracket on ...


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Other answer is good - I got pulled away before I could finish this post I have nice day bike and a rainy day bike and they have less difference than those two bikes and pick up more than 30 seconds on the about the same commute even rainy bike on a nice day Factors: Overall bike weight Aerodynamics The drop bars reduce wind resistance More efficient ...


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I'm not sure that anyone is going to be able to give you a definitive answer... especially since you are asking if your commute will improve by 30 seconds when the commute time you give has a range of 60 seconds. But 30 seconds out of 17.5 minutes is about a 2-3% improvement, which seems reasonable... The more interesting question would be "what can this ...


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Believe it or not in the range of lengths you are looking at there is very little scientific support for there being any real discernible differences in performance (both in absolute power and metabolic efficiency). For the lengths you are considering I would suggest this is largely a personal preference choice. Crank length and maximal power If we are ...


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I always use a spreadsheet to make stem, spacers and handlebar calculations. I find it makes best sense when comparing one setup, that exists and I have used, with another that might be real or hypothetical. Here's an example where I'm considering changing the Pro Vibe 7s on my track bike to a Deda Newton deep drop and if I need to change the stem and/or ...


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Having a Felt F75 myself, I would recommend the following upgrade path from stock: Clipless pedals They take some getting used to, but behold the extra power and comfort! Tyres (and tubes). Vredestein Fortezza Tricomp or similar lightweight folding tyres will give noticeably better grip than stock equipment. Latex inner tubes will smooth the ride and ...


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I had a similar problem with an old steel-frame bike that I "rescued." It had sliding dropouts so that the wheel could essentially be positioned forward or rearward as needed. What would happen is that the nut would come loose and one side of the axle would slide forward in the dropout causing the rub. My solution: A small lock washer or nut on the other ...


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As seen from earlier answers, there is a great deal of variability in the design of both road and hybrid bikes, such that the definitions overlap quite a lot. Perhaps the most common difference is that "road" bikes typically have drop handlebars and "hybrid" bikes typically have flat bars. So maybe the question boils down to which bar style is better for ...


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As an owner of hybrid and road bike, this is what I feel about hybrid superiority: A road bike will have less comfortable ride position which is more suitable for long and fast ride than for a mere commuting. A road bike is much more complicated and expensive machine. Some parts are harder to replace and are more expensive on a road bike. Brake levers for ...


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On the original question As requested by the OP original question, the downsides of a road bike include: Road bikes typically have tire widths that are not oriented towards getting to work with extra items on your bike, comfortably and with minimal distraction. Depending on what the route is like, narrow tires are bad for commuting because: Narrow tires ...


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You've lost the derailleur hanger mounting nut. Don't worry, they're dead cheap. Without it the hanger won't stay in place without the wheel nuts done up tight. You can get away without one (see matt's answer), but it's not ideal. It's better and less fiddly to use a proper mounting nut: The way you've set it up now is totally wrong - the ...


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That configuration is quite dangerous and clearly wrong. Do not ride the bike like that. Do not just tighten the nuts. I can clearly see the outline of where the derailleur was previously mounted. The derailleur should be mounted in a similar position. The small screw hole is a mount point for a carrier, which is probably why you cannot get things back how ...


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I've been researching the same thing. Even built my own tool of sorts by drilling two holes through a wrench and inserting drill bits to act as pegs. The wrench is about 6" long and there's no hope in hell either of the "washers" are going to come off. My experiment didn't mess up the holes but I'd say there's a good reason for 6 pins on the Mavic 670 key. ...


8

Aside from n+1, the other honest answer is: as many as your spouse will tolerate. I have six (two road bikes, one mtb, two folders, one English cruiser). I have met the spousal tolerance factor. After this, I can only replace, not add. So if I really want that Brompton, one of the folders has to go. Now, your question doesn't also get to another important ...


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I won't give my own question the check. I have a few bikes and I see a bike I want and I am going through the can I justify to myself. How many is too much? If you don't have room to store them safely and sheltered then too many. If you are not going to maintain them then it is too many. You can't afford it. When do you need more than one bike? ...


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If you have n bikes, n+1 bikes is the right amount of bikes to have. ;) Realistically, I think 2 or 3 is adequate - a cyclocross or non-racing road bike can do the first two tasks (road ride + commute) provided it has rack and fender mounts, and one mountain bike is likely good enough for the trails in one's area (if you go somewhere else where another ...


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Astra was the Beacon Cycle house brand, according to Sheldon. As @Blam and @Daniel R Hicks say, it's a mid-range 80s bike (that's a compliment)! The lugs, while nothing special, aren't drainpipe thick - this is a good thing. It was probably built well. Crankset may be Stronglight, and the derailleur and front mech are probably Sachs-Huret. Basic components ...


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No, road brake levers are not compatible with v-brakes. If you're dead set on switching to drop bars on a bike with v-brakes, you'll need to either switch the brakes to cantilevers or use a travel agent to correct the pull ratio. Personally, I'd just switch to cantilevers. I've never used a travel agent, but I've heard they can be finicky. There's also a ...


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I like @DWGKNZ's answer, especially where he's saying about things tending to move forward in big bangs, rather than some gradual linear progression. You will of course find small-scale enhancements year-on-year, but these would not be big enough to convince you to get a new bike, say. I just wanted to add something about hydraulic brakes. But also I'd say ...


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While not disagreeing with the first answer above I think there are a few more complexities that haven't been addressed. Changes in bike technology are not linear but rather generational. Component improvements don't happen each year but rather every 3-4 years. Aside from pro and sponsored riders most riders would not see any value in replacing a bike for ...


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Pretty broad but it has not been shut down Components High end road bikes are marketed to racers. UCI and other racing organizations have rules on what can and cannot be on a bike. Biggest changes will come from rule changes. UCI allows electronic gears. There is currently a minimum weight for road races and pro level bikes get under this limit so there ...


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I have now had a road bike for 3 days since i transferred from mountain biker to road biker. I've done just over 50 miles and my experiences so far would be both bikes have pros and cons. The mountain bike is a LOT slower. The width of the tyres being thicker means more surface contact with the road and it slows you down and requires way more effort to ride ...



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