Johan Bornman

In our workshop we think about it all the time and no matter how hard we think about it, we just don't find more than one rim every two years that's worn out on the braking surface. I've sawn off a little piece of every one of those rims and have them in a (little) collection. I show them to my wheelbuilding students and my suspicion is that the ones I show them are the only ones they'll ever see.

No there is not. The brakes we have on bikes today all exceed the one factor that limits quicker stopping - overturning momentum. You cannot skid a bicycle's front wheel on good surface. You will endo before skidding and therefore stopping quicker isn't possible.

So, what does the tying and soldering do to make them light and resistant to artillery?

The Igus equivalent comprises only the two white bushings without the recess for an O-ring. The spacer (black washer) and sleeve has to be manufactured.

Marc, sorry, I've been offine for two days. Drilling 6mm out to 8mm is easy. I'm still looking for a special drill for doing it the 8mm to 6mm way. As for the polymer bushings from Igus. That company is pathetic. I went to see them a while ago and they had all sorts of promises to get back to me. Squat. As for using an aluminium sleeve inside either a DU bush or inside a polymer bush - that is a very bad idea. The alu corrodes on the inside and grip the bolt with a death grip. This currently happening on many Monarch shocks out there with alu hardware inside plastic bushings. It is the tightest grip I've seen in a long time and I've had to remove those bolts in a hydraulic press. I've also had one bike here that a mechanic tried to fix with a hammer. The shock mount wing broke right off the frame. In my opinion, the shock eye should be protected by a DU bush and inside that bush should be either a chrome steel sleeve (like Marzocchi does) or a polymer sleeve of sorts - maybe Vesconite. I just don't know if these plastics have enough MPAs to do the job. I'll offer to experiment on someone's bike - I don't have a full sussser myself.

iou forgot to mention that Fox (i.e, Omnico) don't have anything useful on stock. No reducers, no nothing. I've ended up making these things on my lathe for my customers. I think Omnico is the most useless Fox distributor in the world. And that includes Zimbabwe.

I hate to tell you but your previous owner was absolutely right. Nothing should go on the freehub body. There are no seizing issues there at all. None. Never. What you think is seize is actually spline bite. That's when the cassette cuts into the freehub body (if it is made of alu). No amount of copperslip will prevent that. It is awful to work on bikes where everything that needn't be greased, is greased.

Nou die dag op Radio Sonder Mense se "Die Tale Wat Ons Praat," het julle hierdie twee vorme bespreek. Ongelukkig het ek die uitkoms vergeet want ek is gevooroordeel tot luiperde. Waarvoor gebruik mens nou weer ginko beloba?

Take a gun. That place is filled with marauding and raiding thieves. I'm serious. Parks board has no way of controlling them and turn a blind eye.

Fermented hops juice.

You know where to go....come to.

Ja, I think I must also find one and start a man cave. It is quite beautiful.

yes and no. The smaller sprockets are still loose. If you are a big gear cruncher the problem still exists. The only sprocket set I can see working is that expensive hollow SRAM thing.

Not the same system. They only look the same. You can't swap.

Yes, the ERD is 607mm in both cases. A simple rim transplant can be done. But why bother, break the Crests first.

Yes, but imagine the trouble taking that wheel apart. Since the spokes are already used, you can't swap outbound and inbound spokes. Thus, you have to strip the wheel, keeping left left and left right separate, as with right left and right right. Then you have to cut and thread each one and rebuild the wheel. Most people don't want to pay me for doing that, thinking it happens automatically and for free.

You want to buy a R2.5k cassette to fix a R500 problem? Hell no. Besides, I think the ZTR hub is just a licensed AC hub. You may have to retrofit the AC freehub body. Someone, please pose a pic of the ZTR freehub innards so we can decide.

They are on every new American Classic hub. The freehud body is proprietary and won't fit on others. With Hope you can buy a stainess steel freehub body and some others like Chris King also offer steel/stainless bodies. No-one else can do what AC did unless the patent is licensed to them. It causes a huge amount of damage. Sometimes you cannot even get the old cassette off without two chain whips to turn it backwards. Not only does it cause damage, but it goes together with a whole lot of creaking. Campagnolo solved the problem back in the 1990s when they first went to alu, but making deep splines. Shimano underestimated the future with weight weenies and had shallow splines, which worked fine on steel but not on alu. Now they've tried to reverse the tide with new splines on Dura Ace but I'm afraid it is too late. The whole world copied those faulty splines.

I just redefined the micro-second.

No, it is the torque from the cassette. If you don't pedal, it won't happen.

I was hoping you wouldn't point that out. Now the weight weenies are in a conundrum.

If the rear derailer is one of the new DynaSYS ones it will not work. The leverage is out of synch with road components. In the old days we could build all sorts of Frankenbikes and mix components, now we can't. It is sad, especially for people with special requirements such as tandems, hand bikes and the like.

Of course, this is extremely common. So common that some companies offer a steel freehub body as an alternative but of course, no-one goes for this since it is supposedly too heavy. American Classic has a patent for steel inserts that I think is pretty nifty. Even the weight weenies should like it.

I have corrected this old myth and its multiple variations so often that I wrote a FAQ on it. Since the Hub doesn't have FAQs, it is pinned under Everything You Need to Know about Chains (or something like that). Do some reading and arm yourself for dealing with those issues.

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