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7

If both bikes have a frame which is set up for it, with the long drop-out on the Thorn pictured below and the EX Box below it, then it would be the work of 5 minutes. Just unscrew (possibly by hand) that big nut on the ex-box, remove the wheel and put it onto the other bike. The only issue to remember is to always shift to the same gear (say, the lowest) ...


6

Oil leaking from the hub has been an ongoing problem for me too. When the bike was still new there was an oil leak from the gear changer side which went to Shimano (twice) before the internal seal was replaced (the external seal was replaced the first time to no effect. Over a year later the leak started again and this time Shimano have had the wheel for ...


5

If the wheel is built with the appropriate rim (i.e., a rim with a braking surface) you should be fine. The hub simply has the mounts for a disc brake, one does not have to be mounted.


5

The only scheme I know of is called planetary gears, or as Wikipedia calls it Epicyclic gearing. @Daniel suggests that there are other designs. Here is one of the images from Wikipedia: The inner gear is called the sun and the gears that go around that are called the planetary gears. In the basic design (the original Sturmey Archer design) the sun was ...


4

It was the seal on the Alfine Hub leaking. The local service agents for Spot were able to correct the leak by tightening the external seal on the hub and cleaning everything around it. No cost. The hub is currently performing well. I'm as worried about it as I was when I made the decision to buy it, a new model of anything so complicated is likely to have ...


4

This is done by changing the primary gear ratio with your chainring and, if possible, the cog on the hub. If you make a large change or if the your existing chain is sufficiently worn, you'll likely need to get a new chain as well. As mentioned in the comments, you need to be careful about making the gearing too small (easy to pedal), as you might end up ...


4

It's pretty easy if you have a spoke cutter than are willing to run a funny spoke pattern. I suggest buying (ideally second hand) a three speed hub and lacing it into the 16" rim yourself. With a wheel that small with a child on it there's no enough load to make strength an issue, so you can reasonably either lace a 20 spoke rim to a 36 spoke hub using ...


2

I have a 3 year old Spot with an Alfine 11 with about 11,000 miles on it. The belt lasted about 9,000 miles. The hub started leaking at about the 7,000 mile point, and will currently dump all of its oil about every 400 miles, making for a really greasy belt. The leak is around the inner seal / gear changer cog. The large dust cap seal doesn't leak. As ...


2

I've got shimano internal hub for 5 years mainly to commute. pros: no maintenance - at the beggining easy changing at red light or to jump on the sidewalk cons: harder to change tire when flat one day a car bump my wheel: I add to change the whole wheel+internal hub after some time (3000km) some gears are screwed, so it "jumps" when I press too ...


2

Here is how I found the answer (30-45 N-m): Followed the link in the first comment on the question (or I could have done a search for something like "shimano alfine hub service pdf"). The link Gordon provided was led to several Shimano products identified only by part number, so I did another search for "shimano alfine 11 hub" and found a listing on Amazon ...


2

4th gear and lining up the dots is only necessary when you are setting the cable length (during installation). You do not need to deal with that if all you did was remove the wheel. Shift so that you have enough cable to slide into the proper groove and hook the cable fixing bolt to the shifting pulley mechanism. I sometimes use one thumb to rotate the ...


2

The original Sturmey-Archer 2 speed kick-back hubs are coaster brake hubs and do not allow much movement backwards before the braking happens. Track standing on a coaster break would be tricky because the pedal position would always rotate in the direction of travel and you would eventually end up at the dreaded 12 o'clock position. The new versions have ...


2

I'm a little puzzled by the threads that look like they should draw the hub's axle back to tension the chain. They don't appear like they can move, but it also doesn't look like there is a nut on them to pull the axel back. Do you know if they thread into the frame, or are they free to slide? That said, it appears that the load on the mechanism would tend ...


1

Try something specifically designed for seized parts. PBlaster or Kroil come to mind. Whatever you do, definitely exhaust the non-mechanical remedies before you get out the breaker bar!


1

Alfine 8 and Nexus 8 can use the same shifters. I'm guessing you need to adjust the shifter by turning the barrel adjuster on the shifter (there are marks on the hub which need to be lined up in order for it to shift properly -- check the setup instructions for the hub/shifter).


1

Replacing a hub means building up a new wheel, which means you need to match the hub width to the frame, number of spokes to the rim and what not. See this page on wheel building for more details. Rebuilding a wheel or building a new wheel is pricey and time consuming. If you want to reuse the rim, you will need to look up the spec sheet for the hub and give ...


1

There are a variety of industry solutions for crimping stops on to a cable like this. They sometimes require a special crimp tool, but you can usually get by with a vice. You might start with something like this: http://www.savacable.com/pages/prod_02_04.html See the second entry, "Stop Sleeves"



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