Black_Jack

Thanks for the foil / coke tip. I'll sure try it. (Amazing all the things Coke can do... even more amazing that we know that Coke can remove rust and still drink it !) Black_Jack2009-11-25 07:03:17

Thanks - so I take it they will not just all of a sudden break ? I have no idea what causes the rust. I've read a thread that said small parts of rubber off the brake blocks stick to the spokes, and as they can retain moisture, they start to rust. Not sure how rubber can rust, and not sure if the paint can rust... ? but it does look like there are some rusty bumps on the spokes. The bike is always inside, but I do live in Cape Town, so i guess it's pretty difficult keeping rust away from anything metallic... as for the soup plate - will do officer...

anyone... ?

In practice - by all means heavier guys are faster downhill (I know this from only being able to beat my wife on downhills and getting toasted on climbs...) In theory - if you can reduce your wind resistance you should be able to keep up

going downhill in terms of physics is the same as free-falling "at a slope" If you are free-wheeling down a slope, the only acceleration acting in a forward direction is gravity - and that' s the same for big and small okes. Check this link http://www.thenakedscientists.com/HTML/content/questions/question/1843/

From a purely scientific perspective - if you take away the effect of air resistance there should be no difference...Galileo proved this many years ago by dropping a light and heavy ball off the tower of Pisa. In practice heavier people do descend faster though. This is because their mass creates a down-ward (which translate to forward on a downhill) force much bigger to the up-ward or back-ward force of air resistance. With lighter people the same thing happen, just that the air resistance (which is related to your size and not weight) is bigger in proportion to the downward force created by weight. So - if you're light - sit VERY close to someone bigger in front of you, hope they don't fart, and you should be able to keep up if you can cut out the effect of air resistance.

Hi I have the spokes on my wheels showing rust. The rust seems to be on the surface only cause if I scratch it off, the spokes don't show any pot marks. I do not know the spec of the wheels, it just says "Shimano Wheels" and they have 8 spokes a side. My concern is if the rust is weakening the spokes, and because it only has 16 spokes - do i run the risk that a spoke can break and the wheels will collapse ? Attached i have a pic. Thanks - any ideas or opinions welcome. Cheers

That is a seriously sexy bike.... How awesome that it's home grown ! Black_Jack2009-11-09 15:17:07

John O connor is a new store, right ? Maybe support them - always good if new stores open.

Hi, I am in Cape Town CBD - I used to have my bike serviced at CWC - but don't work in the ville anymore, so am looking for a good bike service spot in and around the CBD - any suggestions ? Cheers !

Though Fox normally looks better, I'm also a Rockshox fan. More bang for your buck. I ride a Reba - stiff but still plush.

Have to agree - what an awesome race !! And it was great to see Micheal Naicker live !!

Hi, Here's the deal. I need to replace my wheelset due to a log which got stuck in the spokes, snapping 2 and bending the rim. Bike shop verdict - replace. Options are: Mavic Crossride - brand new, R2900 DT Swiss 455 - roughly 1 year use, R2200 Voting starts now !! Cheers

The reading will always be less if you attach the hose afterwards - as the air from the shock has to fill up the hose first, up to where the guage sits, so effectively you enlarge the camber filled with high pressure air, and a larger chamber means a lower pressure, hence the lower pressure on the guage.

On the topic of air in shocks - I've pumped my shock (Reba) - with the pump I got with the shock, and I get it to the pressure it says on the sticker on the side of the shock (it lists weight vs. pressure). But it almost feel like I cannot release the pump hose quickly enough. While un-screwing the pump hose from the valve - it sounds like air escapes. Is this air escaping from the hose/pump, or from the shock ? And what should I do - over-inflate the shock and just unscrew the hose quicker ?