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< Racing News & Results ~ Club Medium Gear 10 mile time trial Sat 13th March |
| Il Lupo |
 Posted: Sun Feb 14, 2010 8:45 am |
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Joined: 28 May 2007
Posts: 1576
Location: Pontypandy, where the action is.
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The Club's racing events for 2010 start on Saturday 20th February with the Medium Gear 10 mile time trials on the quiet Lime Kiln course (non club members welcome to record private times or you can ride non medium gear if you wish)
Saturday 20th February 2010 at 11am Round 1
Saturday 27th February 2010 at 11am Round 2
Saturday 6th March 2010 at 11am Round 3
Saturday 13th March 2010 at 11am Round 4
course profile here: http://nottinghamclarioncc.sports.officelive.com/limekilncourse.aspx
A Gear chart is here to help you with gear selection if you are intending to ride a 72inch gear (or less)
http://www.sheldonbrown.com/gears/
http://promechanics.com/files/2008/01/gearchart1.pdf |
Last edited by Il Lupo on Tue Mar 09, 2010 1:08 pm; edited 3 times in total
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| john-o |
| Posted: Tue Feb 16, 2010 10:49 am |
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Site Admin
Joined: 27 May 2007
Posts: 786
Location: Bingham
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I'm not competing this year, but I might come down for a ride around.
Who are the contenders? |
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| MikeC |
| Posted: Tue Feb 16, 2010 11:12 am |
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Joined: 18 Nov 2008
Posts: 67
Location: Cropwell Bishop.
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Got a 2006 allez triple set up as below. Sheldon browm says 71.9 inch gear achieved with 52 chain ring to a 19 tooth rear sprocket
Pro mechanics says the same ratio gives a 74 inch gear.
Does crank size have a bearing on this as its required in sheldon Brown calculation.
If so does anybodt know what crank size my bike has.
As for whose in contention for the trophy not me. Went round the couse in over 34 minutes on Sunday using the 52chain ring 19 tooth back cog combination what i thought was a medium gear.
PS. Keeping the bike as have had a 3 month reprieve on redundancy we won a new contract last week.
http://www.specialized.com/ca/en/bc/SBCBkModel.jsp?arc=2006&spid=21577&gold_ses=
Specialized allez triple 2006 with 8 speed rear cassette,
CASSETTE
Shimano HG50, 12-25t
12-25 - 12.13.15.17.19.21.23.25
CHAINRINGS
52x42x30T |
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| LuniCycle |
| Posted: Tue Feb 16, 2010 11:53 am |
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Joined: 24 Aug 2007
Posts: 125
Location: Somewhere using anything but WD40 - I can take a hint.
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calculating it from scratch I think the Sheldon's look closer...
700x23 diam = 25.9 GI = 25.9x52/19 = 70.88
700x25 diam = 26.3 GI = 26.3x52/19 = 71.98
700x28 diam = 26.5 GI = 26.5x52/19 = 72.53
Well that's how I understand it anyway  |
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| john-o |
| Posted: Tue Feb 16, 2010 12:04 pm |
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Site Admin
Joined: 27 May 2007
Posts: 786
Location: Bingham
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As Richard alludes to, it's the wheel / tyre circumfrence. Typically a tubular tyre will have a slightly smaller circumfrence than a clincher so you need a slightly larger chainring / sprocket combo to get to the magic 72".
52-19 sounds about right.
It's real hard racing, so don't be put off by a 34! |
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"Training is like fighting with a Gorilla. You don't stop when you're tired" Greg Henderson, TeamSky |
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| MikeC |
| Posted: Tue Feb 16, 2010 12:16 pm |
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Joined: 18 Nov 2008
Posts: 67
Location: Cropwell Bishop.
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| Paul H. |
| Posted: Tue Feb 16, 2010 3:44 pm |
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Joined: 28 May 2007
Posts: 982
Location: Waiting for Schleck
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| The only sure way to check your gear is to measure the distance travelled for one pedal revolution, for a medium gear this is 18ft 10.1/4 inches. Anything on or under that is ok. |
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| TroyofCromer |
| Posted: Fri Feb 19, 2010 2:57 pm |
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Joined: 30 Jul 2007
Posts: 28
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| Weather looks nice for tomorrow, if a touch nippy. Managed to persuade a mate from work to come along and join up/in as well. He used to do a fair bit but has not touched his bike for 10 years (as evidence he dusted off the Carrera Jeans kit last night) so no excuses for not riding due to lack of early season miles etc etc |
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| Il Lupo |
| Posted: Fri Feb 19, 2010 3:43 pm |
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Joined: 28 May 2007
Posts: 1576
Location: Pontypandy, where the action is.
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I have a retro Carrera Jeans winter jacket in my wardrobe in stonewash denim effect lycra - fantastically bad taste 
Used to see Dennis in some of the carrera bottoms that look like jeans as well.. |
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| Il Lupo |
| Posted: Tue Feb 23, 2010 10:27 am |
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Joined: 28 May 2007
Posts: 1576
Location: Pontypandy, where the action is.
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Round 2 is this Saturday.
Results from Round 1 up in the Classified results section. |
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| Il Lupo |
| Posted: Sun Feb 28, 2010 9:43 pm |
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Joined: 28 May 2007
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Location: Pontypandy, where the action is.
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Round 3 is this Saturday.
Results from Round 1 and 2 up in the Classified results section. |
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| john-o |
| Posted: Sat Mar 06, 2010 10:27 pm |
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Joined: 27 May 2007
Posts: 786
Location: Bingham
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Enjoyed riding the MG today. First race in 8 months - suprisingly enjoyable, although not very fast!
Excellent winning time by Stuey. Richard Birkin was also flying, especially when he came past me for 2 minutes near the line.
Thanks to Derek, Pete and the time keeping team. |
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| la boca |
| Posted: Sun Mar 07, 2010 8:32 pm |
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Joined: 04 Jun 2007
Posts: 932
Location: ...just off the back.....
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john-o wrote: Enjoyed riding the MG today. First race in 8 months - suprisingly enjoyable, although not very fast!
Excellent winning time by Stuey. Richard Birkin was also flying, especially when he came past me for 2 minutes near the line.
Thanks to Derek, Pete and the time keeping team.
Even I felt like it was going well. Just need to keep the bike underneath me next time. 
Running alongside just isn't as fast. |
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| KarenL |
| Posted: Sun Mar 07, 2010 9:50 pm |
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Joined: 21 Aug 2008
Posts: 31
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| I see Gabriel finally made it under 30 mins - well done, the pressure is now to stay there. |
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| Il Lupo |
| Posted: Tue Mar 09, 2010 1:08 pm |
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Joined: 28 May 2007
Posts: 1576
Location: Pontypandy, where the action is.
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The last Round 4 is this Saturday.
Results from Round 1, 2 and 3 up in the Classified results section.
Just a reminder that its best 3 rides that count towards the Championship - good luck |
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