Showing posts with label Continental gp4000. Show all posts
Showing posts with label Continental gp4000. Show all posts

Monday, August 25, 2008

Tyres, Punctures ... Stuff

Over the years I have been plagued with punctures here. The sides of the road are often strewn with broken glass and wire.

I recall getting punctures on three consecutive rides. Pretty dismal.

So naturally, I've put some thought into this and there are probably more effective solutions this has worked for me.

My current road bike came equipped with Michelins which are very good tyres. However, my attachment to Continentals meant that the bike shop fitted GP 4-Seasons.

First impressions are that these are very good tyres. But, as you might expect, they don't seem as free rolling as the GP4000s I used on the my old Trek road bike. However, as the seasons change, the heavier duty construction will come into its own.

I think, though, next spring will see a change to GP4000Ss - the nice shiny black ones with silver graphics. That should match the Giant nicely ;-)

Now, paranoia means that I am also using a tyre sealant. The big seller here is Slime, but I've been trying the equally enticingly named Sludge - a big seller in Africa, apparently.

The advantage Sludge claims is that, firstly, it is thin enough to be introduced into the inner tube via a presta valve. I have done this. It is quite an easy task. Secondly, it claims to vulcanise any leak that does occur.

Does it work? Well, I haven't had a puncture ... but who knows? Maybe the Contis reinforced layer actually does it?

The Giant frame means that my lovely Blackburn frame fit pump no longer fits ... I let it go with the Trek.

About the only thing that will fit would be some sort of compact pump, but I've never really got on with those, so I'm trying this; the Genuine Innovations CO2 Air Chuck. Hopefully I won't need to know how effective this is either.

Domestic pumping duty is performed by a Joe Blow track pump. This easily gets road tyres up to 120psi. What can I say ... it's a track pump.

Sunday, June 29, 2008

Trek : 1200

I like aluminium bikes. Yes ... aluminium!!!

The Trek 1200 is my current road going bicycle.

Very little has been changed on it other than the tyres, Continental GP4000 plus Sludge tyre sealant, and the bar tape, now Fi'zi:k.

The frame is far smaller than your lbs would probably advise, but as I've said before, this is what suits me, even if the bars are low and the seat-pin is a mile long.

I would like a better bike in the future, job/finances permitting of course, and at the moment I am focusing on Cannondales and Giants. The Cannondales are good bikes, but I just don't like the look, whereas the Giant geometry seems to match what I like.

But at the moment, the Trek 1200 is going well. I like it.

Saturday, June 28, 2008

Punctures : update

Well, so far, so good. Last year, I was virtually running a puncture on every ride.

This year I seriously upgraded my tyres to Continental GP4000s and used a tyre sealant called Sludge from Sludge International. Apparently, Sludge is the biggest selling tyre sealant in Africa!!!

Is it working? Well, if you don't have a puncture, how can you tell? On the other hand, the Contis seem very good and have given me a lot of confidence.

I seem to drop by other riders on descents; they seem to absorb road shock better than my previous tyres even though they run at 20psi more; and they are very steady over 40mph and round even rough corners. And lastly, they're rather red ...

You can read more about Sludge and me here ...

So this seems to be a good combo and I'll stick with it.