Search found 9 matches

by Dan
4 Jun 2012, 7:26am
Forum: Bikes & Bits – Technical section
Topic: My aluminium front fork steerer {carbon forks} snapped off.
Replies: 147
Views: 23329

Re: My aluminium front fork steerer {carbon forks} snapped o

I heard the Eurosport commentator on the Paris Roubaix this year say that most of the bikes would not be used again after that one race!
by Dan
15 Jan 2012, 4:29pm
Forum: Bikes & Bits – Technical section
Topic: Chain wear
Replies: 92
Views: 91838

Re: Chain wear

Since my last post my replacement KMC 10 Speed chain (X10.93, £15 at Merlin) has done 1830kms and my indexing has started to deteriorate. Taken the chain off and it has stretched 3.5mm against a new chain. This chain has been cleaned every 200km and dry lubed. Indexing now appears fine. So it is not...
by Dan
9 Oct 2011, 3:04pm
Forum: Bikes & Bits – Technical section
Topic: Chain wear
Replies: 92
Views: 91838

Re: Chain wear

Since my June posting that my Campag Centaur 10s chain had stretched 5mm over its 1370mm length (0.36%), and had worn out my 11 tooth sprocket (such that a new KMC chain skipped on it) I put on a new KMC chain (£20) and Centaur block (£60). After 3 months and approximately 1,200km of road club ridin...
by Dan
11 Jun 2011, 3:00pm
Forum: Bikes & Bits – Technical section
Topic: Chain wear
Replies: 92
Views: 91838

Re: Chain wear

Niggle, you are (nearly) correct, the Rohloff Caliber 2 measures stretch at 0.075 and 0.1 mm PER LINK (according to the instructions), not 0.075% and 0.1% as I mistakenly thought. So I was out by a factor of 1/25.4=0.039 Taking 1 link to be 1 inch (25.4mm) of chain the Rohloff chain checker calibrat...
by Dan
9 Jun 2011, 12:28pm
Forum: Bikes & Bits – Technical section
Topic: Chain wear
Replies: 92
Views: 91838

Re: Chain wear

I took off my centaur chain and put on a new KMC chain, sadly it skipped on the 11 tooth sprocket under full power. So the centaur is back on this time with a KMC missing link. When I measured the old centaur chain against the new KMC it had stretched by 5mm over the length of the whole chain. This ...
by Dan
4 Jun 2011, 11:11pm
Forum: Bikes & Bits – Technical section
Topic: Chain wear
Replies: 92
Views: 91838

Re: Chain wear

If you are rotating campag chains do you use "missing links" or campag rivets each time?
by Dan
4 Jun 2011, 11:09pm
Forum: Bikes & Bits – Technical section
Topic: Chain wear
Replies: 92
Views: 91838

Re: Chain wear

How many miles has your Campag chain done?


Hard to say exactly, very light use until this year, probably <<1000km and no significant stretch [<0.075%]. Then this year 2000km, and now >0.1% stretch.
by Dan
1 Jun 2011, 11:18pm
Forum: Bikes & Bits – Technical section
Topic: Chain wear
Replies: 92
Views: 91838

Re: Chain wear

I ride a Campagnolo Centaur 10 speed groupset. I regularly check (maybe not enough) my chain with a Rohloff caliber 2 chain checker, and due to a sudden surge in my milage (I recently joined a racing club) the wear has jumped from <0.075% to >0.1%. I have been to two bike shops and both of then have...
by Dan
29 May 2011, 4:02pm
Forum: Bikes & Bits – Technical section
Topic: 23mm vs 25mm tyres, can you really tell the differance?
Replies: 121
Views: 7402

Re: 23mm vs 25mm tyres, can you really tell the differance?

Fascinating thread. I bought a 25mm tyre, previously I was on 23mm conti GP 4 seasons front and back running at 100/105psi, now 23mm front, 25 mm back both running at 100psi. On club runs the bike is less skittish and I am descending and cornering at greater speed. I don't feel any need to put a 25 ...