Search found 783 matches
- 08 Oct 2010 09:38
- Forum: Technical Talk
- Topic: Specilized Allez 16 or 24 ?
- Replies: 44
- Views: 15139
But the relative difference in diameter between a 30 and a 40 must be greater than that between a 40 and a 50. The step up (or down) is always the same. Are you saying that step feels more (or less) depending on the start point. In other words a change down from 50 to 40 feels different to a change...
- 07 Oct 2010 21:35
- Forum: Technical Talk
- Topic: Specilized Allez 16 or 24 ?
- Replies: 44
- Views: 15139
Double on the Allez is 39-52, my triple is 30-39-52 so I don't see why a change from a 39-52 on a triple (which for most purposes is the change you'll be making >95% of the time) should feel any different to the same change on a double. It's the same 1.03" step both times. And if you removed the in...
- 07 Oct 2010 21:25
- Forum: Technical Talk
- Topic: Specilized Allez 16 or 24 ?
- Replies: 44
- Views: 15139
Sorry, George. The difference in diameter is directly proportional to the difference in number of teeth. The difference in radius is the amount the chain has to jump from one ring to the another. difference in radius = difference in teeth / (4 x pi) inches So, it's 0.8" for a 10-teeth difference and...
- 06 Oct 2010 13:47
- Forum: Technical Talk
- Topic: Specilized Allez 16 or 24 ?
- Replies: 44
- Views: 15139
it's a complete mystery to me why compact chainsets are so popular. Hear, hear! Inefficient chain lines, and the gears that you'd use most (at least in our area) are where the 'missing' middle ring would be. I suspect there's a hangover to the days when a triple was considered only for tourists i.e...
- 05 Oct 2010 17:29
- Forum: Technical Talk
- Topic: Specilized Allez 16 or 24 ?
- Replies: 44
- Views: 15139
- 04 Oct 2010 09:14
- Forum: Technical Talk
- Topic: Cycle streets by iPhone
- Replies: 1
- Views: 1911
Impressive! Gave it a quick try and it came up with an identical route to mine from Diglis Bridge to the Country Park in Worcester. Then I asked it for Black Horse to Worcester Country Park and it came up with a very plausible route: out towards Waseley but then on to NCR 5 to Bromsgrove, Timberhong...
- 18 Sep 2010 14:49
- Forum: Technical Talk
- Topic: Go Faster Aerodynamic Water Bottles?
- Replies: 3
- Views: 2326
- 26 Aug 2010 12:34
- Forum: Technical Talk
- Topic: Mysteries of Garmin file names
- Replies: 10
- Views: 5942
- 26 Aug 2010 09:46
- Forum: Technical Talk
- Topic: Mysteries of Garmin file names
- Replies: 10
- Views: 5942
I use the Google Maps-based sites for creating routes (bikely, biketoaster, ridewithgps etc. - take your pick) then download the GPX. Any conversion e.g. 'track to route' or reducing the number of waypoints to fit your device can be done with GPSBabel (free) and you can transfer routes/tracks using ...
- 25 Aug 2010 22:53
- Forum: Technical Talk
- Topic: Mysteries of Garmin file names
- Replies: 10
- Views: 5942
... or just open up the GPX file in Notepad and change the track name. If I were you, I'd stick to GPX if you want to share routes or tracks with others. GPX is an xml format designed specifically for saving GPS track, waypoint and route data. It is increasingly used by GPS programs because of its f...
- 10 Aug 2010 22:05
- Forum: Technical Talk
- Topic: Repairing a turbo trainer
- Replies: 4
- Views: 3016
- 03 Aug 2010 11:20
- Forum: Technical Talk
- Topic: Halfords cheap mountain bikes
- Replies: 6
- Views: 3566
- 28 Jul 2010 21:21
- Forum: Technical Talk
- Topic: Bicycle travel bag recommendations
- Replies: 2
- Views: 1982
I've used a padded bike bag many times with no problems. Use bubble wrap on the rear mech etc. but no need to overdo it. Wheels (in bags) either side of the frame will provide most of the protection. If you're that bothered about the odd scrape then leave the bike at home! http://www.wiggle.co.uk/p/...
- 28 Jul 2010 08:50
- Forum: Technical Talk
- Topic: George has another STD
- Replies: 28
- Views: 10401
- 28 Jul 2010 08:48
- Forum: Technical Talk
- Topic: George has another STD
- Replies: 28
- Views: 10401
And this shows why GPS is not always reliable for recording distance
http://www.bikely.com/maps/bike-path/Cares-Gorge-walk
http://www.bikely.com/maps/bike-path/Cares-Gorge-walk
- 28 Jul 2010 08:46
- Forum: Technical Talk
- Topic: George has another STD
- Replies: 28
- Views: 10401
- 26 Jul 2010 21:50
- Forum: Technical Talk
- Topic: George has another STD
- Replies: 28
- Views: 10401
- 06 Jun 2010 14:35
- Forum: Audaxes & Cyclosportives
- Topic: Audax Digest
- Replies: 105
- Views: 1162627
Heart of the Shires, 212km randonee. 5th June 2010 Ridden by: Andy Terry HQ: Walton, Leics (1 hour by car from Bromsgrove) Organiser: Tony Davis Stages 1. Walton - Brixworth 28km 2. Brixworth - Allexton 40km 3. Allexton - Walton 33km 4. Walton - Southam 52km 5. Southam - Walton 59km http://www.bike...
- 10 Jan 2010 13:51
- Forum: Technical Talk
- Topic: Why aren't more people using GPS?
- Replies: 42
- Views: 31708
- 12 Jul 2009 22:30
- Forum: Technical Talk
- Topic: Bodge of the week
- Replies: 8
- Views: 4645
- 12 Jul 2009 21:11
- Forum: Technical Talk
- Topic: Bodge of the week
- Replies: 8
- Views: 4645
- 12 Jul 2009 21:04
- Forum: Technical Talk
- Topic: Bodge of the week
- Replies: 8
- Views: 4645
Bodge of the week
My freewheel broke on the Devil Ride today. Tied the big cog to the spokes using chicken wire and zip ties and rode the last 35km on it, very carefully.
- 30 Jun 2009 09:51
- Forum: Technical Talk
- Topic: GPS navigation
- Replies: 10
- Views: 5340
- 30 Apr 2009 14:51
- Forum: Technical Talk
- Topic: Calculating your chain length
- Replies: 3
- Views: 2621
As usual, Sheldon Brown has the simple answer.
- 20 Mar 2009 11:18
- Forum: Technical Talk
- Topic: Where can I buy the cheapest chainrings....
- Replies: 13
- Views: 7062
- 19 Mar 2009 13:10
- Forum: Technical Talk
- Topic: Where can I buy the cheapest chainrings....
- Replies: 13
- Views: 7062
BCD = Bolt Circle Diameter
http://sheldonbrown.com/gloss_bo-z.html#bcd
PCD = Pitch Circle Diameter (the same thing)
http://sheldonbrown.com/gloss_p.html#pcd
http://sheldonbrown.com/gloss_bo-z.html#bcd
PCD = Pitch Circle Diameter (the same thing)
http://sheldonbrown.com/gloss_p.html#pcd
- 30 Jan 2009 20:49
- Forum: Technical Talk
- Topic: Shaving Legs
- Replies: 5
- Views: 3780
- 05 May 2008 22:55
- Forum: Technical Talk
- Topic: Why aren't more people using GPS?
- Replies: 42
- Views: 31708
- 24 Sep 2007 10:14
- Forum: Pro Racing
- Topic: Ankerdine by the Pros
- Replies: 74
- Views: 90379
- 22 Sep 2007 00:05
- Forum: Pro Racing
- Topic: Ankerdine by the Pros
- Replies: 74
- Views: 90379
- 21 Sep 2007 20:56
- Forum: Pro Racing
- Topic: Ankerdine by the Pros
- Replies: 74
- Views: 90379
- 05 Mar 2007 13:23
- Forum: Technical Talk
- Topic: Why aren't more people using GPS?
- Replies: 42
- Views: 31708
- 02 Mar 2007 21:56
- Forum: Technical Talk
- Topic: Why aren't more people using GPS?
- Replies: 42
- Views: 31708
Why aren't more people using GPS?
... especially on Audaxes. The benefits are obvious (to me anyway): - almost no chance of getting lost - no bits of paper flapping around your bars - no trying to read soggy route notes in the rain - hands-free and safe - do your navigation at home, enjoy the ride more - explore a greater variety of...