Comparative Classification of the Modern Recreational Cyclist though Consumption and Subculturehttps://www.sheldonbrown.com/https://www.parktool.com/en-us/blog/repair-help/Previously thread >>2079062
>>2080737>>2080698
a few questions,My bike has a Shimano Nexus 4 speedI was consdering to replace it for a Nexus 8 Is there anything I should look out for to know if it would work with my bike? Certain sizes, using specific cables? Brake? Can you use the Di2 version for normal bikes? Spokes?One other thing I was wondering: Do speeds feel the same (in the sense of pedaling speed and weight) across the same speed for both? (lets say you use the 3rd speed on both the Nexus 4 and Nexus 8, would they feel the same?)
>>2080767*Shimano Nexus 4 Speeds
>>2080767gear-calculator.com doesn't have nexus 4 for some reason, but between 8 and 5 you can see there's more overall range, steps, and much lower low gears with 8. this is for the default chainring and cog. you can put in what you actually have, a given cadence and it'll show you kph or mph, and what wheel size you have and you can see the actual gear-inches. but screenshot tells you your question basically.you don't just get to drop in the new one (I don't think), they're a whole hub, so you have to take the spokes off, take out the 4, then lace the spokes into the 8 and rim, then tension and true. if the spoke flange is a different size than the 4, then you need new spokes that fit. this is time consuming for you and expensive for a shop. there's a possibility that a whole new wheel built with an 8 would be cheaper. unless nexus hubs have the ability to trade out internal parts, but I've never heard of that.
>>2080767another thing you can do with the 4 is change the gears on your drivetrain to tune your strength/terrain needs. like, if the 4 is too easy to pedal in the high gear and you want a harder gear for more speed, you'd get either more teeth (bigger) on the crank, or less (smaller) on the wheel. or if the hills are killing you and you want lower, easier gears, get less teeth on the crank or more on the wheel.but the 8 will have more overall range and the difference in feel between the changes will be less.
>>2080737Is it possible to uplift a walmart/target BSO into a decent bike?
>>2080771>>2080773okay, I see that there are wheels you can buy with it but what about frame distance and fitting? Also my bike uses a rollerbrake at the back
Can you replace a rimbrake on the front wheel for a rollerbrake?
>>2080767>Is there anything I should look out for to know if it would work with my bike?Check your OLD / frame spacing and if it's feasible to change it first. They vary wildly. I have forever since it came out been in love with the SG-C3001-7 but the 127 mm OLD on some of them is really... odd.>>2080767>One other thing I was wondering: Do speeds feel the same (in the sense of pedaling speed and weight) across the same speed for both?You mean wether a speed, going by it's numerical name, is the same ratio as it would be on another nexus IGH? Obviously not, just think about it. It would either imply 3 speeds were completely useless or 8 speeds were extremely overgeared. In reality IGHs have always suffered most from not offering too big of a total range. On a 3 speed the difference in ratio between 2 speeds is alot more. Ultimately, since you're fiddling with it anyways, you're not bound to keep the primary ratio (chainwheel and cog) you currently have either so you can do whatever you want.Tip:Shimano moved away from stating maximum input torque and instead states a minimum primary ratio for safe operation. Moronic but here we are.Protip: The recommendation can be safely exceeded by far. Especially if you're not obese and especially if you keep in mind what you have done and don't force it up the steepest hills.Expert tip: First gear usually is the strongest so if you're forcing it don't be stupid and do it in 2nd.
>>2080778>Can you replace a rimbrake on the front wheel for a rollerbrake?Generally not. What do you think will take up the reaction force from braking? If your fork was made for rim brake it is unlikely to accept a roller brake.Of course the exception is that you can almost always create or recreate what has been manufactured before. Just depends on how much time, effort or money you want to sink into it. But no plug and play. Don't rely on hoseclamps or similar for brakes.
>>2080782>Check your OLD / frame spacing and if it's feasible to change it firsthow?
>>2080782OLD usually only changes with the number of cogs/cassette. the new and old hubs only have one cog. and they're both nexus models. the OLD should be the same, right?as long as the wheel size is the same (probably 700c but he doesn't say) then as long as the rim width is similar (he doesn't put a MTB width to replace a road width ) then the frame clearance won't be affected.
>>2080786my wheels are 622 mm, 28 inch tiresif I am not mistaken the small back gear has 19 tooths and the crank one has 39 or 41, I dont know if I have a cassette
>>2080776Not worth it.
>>2080776nothose don't even adhere to common standards and anyway a bottom bracket + crankset already cost more, even if you could which you can't
>>2080778no your fork needs this part also roller brakes are shit
>>2080795Is that a... Is that a ebike!???!? AIEEEEEEEEEE
>>2080776I mean you would pretty much have to replace most of the parts and the frame will probably be heavy even if alloy
>>2080776yes but retarded dental hygenists (not even real dentists!!) will parrot fuddlore about you about how the very threads on each bolt will be weird. these days they just throw entry level shimano stuff on them, so any other shimano stuff will fit. the bars are 7/8" or closest metric equivalent, the brakes are either rims with bigass cutouts and the usual M6 bolts on any decent shoe will fit (or it's discs with the usual hex arrangement of bolts) and so on
>>2080776No. It is literally impossible to put new parts on a big box store bike. All bikes are designed by an Engineer and once you start messing with their vision, all bets are off and performance will never be the same. It's like mixing Shimano and SRAM. You just don't do it. The people who designed all these parts, even when they're chink BSOs, are smarter than you. Do not interfere with their vision.
>>2080776>HURR I JUST BOUGHT A MIATA WITH THE i4 IN IT CAN I MAKE IT INTO A LE ROTARY???No, retard.
>>2080776Imagine buying a Dell and thinking you can make it into a real gaming rig by simply putting a better graphics card and some extra sticks of memory in it. That's what you sound like.
My bike is in terrible shape and has both an electric kit and a gas engine on it, either of which may fail at any time. This is not a meme about lithium batteries. I have suffered critical failures on the road severe enough that I skidded so hard that the wheel ground down to the tube before.Is there some kind of sign I can put on my bike that says "THIS SHIT WILL FAIL WITHOUT WARNING AND QUICKLY; PLEASE GIVE ME SPACE OR YOU MIGHT RUN ME OVER AND POP YOUR OWN TIRES AND SHRED YOUR UNDERCARRIAGE ON MY DEBRIS" like how logging or gravel trucks have standard signs about loads being technically secure but stuff being still possible to come off
>>2080811No one will miss you when you die
>>2080793>>2080812>>2080813Absolute retards. What is it with cyclists being absolute wrenchlets when it's one of the easiest machines to work on?
>>2080841it's a very white hobby
>>2080841most cyclists in the english speaking world are not commuters, but larping wannabe racers who chase performance with their wallets
>>2080831You legitimately piss me off with your existence. I hope you never stop.
>>2080848No one stops.
>>2080849>reflectors on the pedals
>>2080841The clutch is fucked up on my le eepy lil bike can u help me fix it ???
>>2080852Suck start a shotgun
>>2080853That's not how shotguns work, and I have strong opinions on the possibility of diesel-actuated weapons (and they would require some truly dire advanced hooker tier sucking to achieve such pressures)
My bicycle, if you can call it that, is broken. It is made up of bicycle parts. These weren't forged at home. It's all entry level shimano shit, and a spattering of american "patent pending" one-off levers. There is no reason my vehicle can't be serviced by an average bike mechanic. I know for a fact that I am a well below average bike mechanic, and I service most of it myself. It annoys me that my pile of scrap is somehow unserviceable by the average shop, not for it being "uneconomic" but because apparently it can't be understood.
I'm tired of existing in some weird inbetween space. It's all bike parts and I pedal it sometimes, so I have need of bike parts. The engine parts are hub motors, but apparently no serious enthusiast cares about that. There's a gas engine involved too, but when I have simple mechanical problems, well, it's not a fucking harley so no one can offer any kind of help. I have to just take everything apart and wiggle it around to see what engages what and try to deal with it. It's annoying. I, as a bad person, deserve to be alone. But I as an owner of a series of standardized machinery am annoyed that it's apparently not so standardized. Every time I have a problem that's not emotional, suddenly there's no support, no one has ever seen this before, despite it all relating to a long series of stuff made by other people, for other people, according to standards set by other people, for other people. suddenly all these other people evaporate and never existed. every time anything goes wrong in my personal life, I have to chase down data sheets made by liars, if they were written at all. And when I have to resort to meters and calipers, suddenly I'm the asshole for doing that instead of referring to data sheets that don't exist.
>>2080609 Plenty of people who ride their bicycles daily to wageslave in my area. Maybe if you lived in a non-highway infested country, you would know better.
