Nexus is a type of gear hub made by Shimano, who happily sell their hubs to several different bicycle manufacturers. Hence you can find Nexus hubs on bikes of different brands.
OK, what are are these various brands?
Look, there's no magic in designing a bike to take a Nexus hub, so there are plenty of brands who have used them. Tracking down each end every one of them is a chore that I'm not about to undertake. Not to mention all the happy home tinkerers who've converted whatever frame they fancied to Nexus. A short search throws up Trek, Cannondale, Bianchi, and two local UK brands that have used Nexus.
If you really want to know either do the web trawling yourself, or see if you can charm a Shimano rep enough to tell you which bike companies they sell to.
Routing - transport logistics. This is done on a personal basis whenever you choose to "kill two birds with one stone": while I am down that way I may as well pick up xyz.Locating distribution hubs.
If this is a real-life question it can't be answered, as real rims and hubs have all kinds of shapes to them that mess up the measurements. IRL a spoke wouldn't reach all the way to the center for instance, it'd be attached some way off, at the hub flange. You'd also need to know what lace pattern is being used, as that affects spoke length. But if this was a maths question that isn't required to make sense then spoke length would be (42/pi)/2.
Intelligent Hubs possess internal processing capabilities not passive ones.
Intelligent Hubs have processing capabilities
One would use Velocity wheels on bicycles. Velocity wheels should be used in conjunction with Velocity brand rims and hubs. One can purchase Velocity products for their bicycle through their website, VelocityUSA.
Intelligent Hubs
A great and good brand of USB hubs are made by LINKSYS
No. Bicycles with external gears have chain-and-sprocket gears. Bicycles with internally geared hubs have both a chain-and-sprocket gear and spur gears (usually in a planetary configuration) inside the rear hub. Then there are the rather rare shaft-drive bicycles, which use bevel gears. And maybe an internally geared hub as well. Then there's the occasional belt drive bike of course. And one or two CVT designs.
Chris King is a high quality brand that manufactures hubs for the wheels of cycles. The patented feature that distinguishes Chris King hubs is the 72 tooth engaging ring hub.
In most cases just buying a new set of hubs. The automatic hubs are spring loaded and have an internal locking mechanism that works with the axle as to manual which just locks on to the axle when you turn the dial . Very easy swap just make sure the manual hubs are for your vehicle .
No. That is, if you're referring to the newer internally-geared 7-speed hubs from Shimano (Nexus) and SRAM (S7). Both of these have seven internal gear ratios (like the old 3-speeds on steroids) and a coaster brake. They are installed using a single chainring at the cranks and a single rear cog. So no derailleurs needed. BTW, the Nexus (or its sibling the Alfine) hub from Shimano has been made in 4, 7, 8 and 11 ratios.
Cruisers are usually single-speeds, but can be fitted with either internal gear hubs or derailer gear hubs. Usually 3-5 speed IGHs or 6-7 speeds derailer gears.
On vehicles equipped with vacuum actuated hubs, a loss of vacuum will render them inoperable. On vehicles equipped with manual hubs, a broken or worn internal part will cause the same. Other areas to check include fuses, relays, wiring and other 4 wheel drive sensors and switches.
If you have 2.0 hubs and 2.0 hardware, then yes, they should work. You can use 1.1 hardware in a 2.0 hub. It's just slow, that's all.