Ceri-Siân's baby. A Thorn xTc, of August 2004 vintage. She is a 525mm/short top tube frame size. The colour is French blue.
İStephen Dee
5 Sep 2004 ID P9058609
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Ceri-Siân's New Baby |
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Ceri-Siân's new baby is a Thorn xTc with the following key specifications
See the St John Street Cycles website for more background details on Thorn range of cycles. |
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Transmission/Gears |
Shimano HG70 LX 9 speed cassette 11, 12, 14, 16, 18, 21, 24, 24, 28, 32 Shimano Deore chain set with 44/32/22 teeth chain ring and 170mm cranks Shimano Deore LX FD-M571 9 speed down pull 31.8mm band on front derailleur Shimano Deore LX RD-M570 SGS (long cage) 9 speed rear derailleur Shimano Dura Ace SL-BS88 bar end levers This gives the following gear range: 18 to 104 inches |
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Brakes |
Front: Avid Shorty 6 Cantilever Rear: Avid Shorty 6 Cantilever Levers: Shimano R400 |
| Wheels |
Front: Shimano Deore LX M570 hub, 36 spokes. Rear: Shimano Deore LX M570 hub, 36 spokes. fitted with Sun CR18 559mm rims and Panaracer Tour Guard, 26 x 1.75 (note these tyres do not show the correct ISO designation of tyre size). |
| Pedals | VP389 (make unknown) flat one sided pedals fitted with reflectors and Wellgo open toe clips. These pedals Ceri-Siân had second hand from Swallows when we got Siegfried in Dec 1996 - they were ideal in having the flattish surface as kids pedal in normal shoes can can feel the rough edges of normal open cage pedals. |
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Saddle |
Selle Italia |
| Handlebars | 40cm ITM anatomic drop bars |
| Headset | FSA Orbit XL II |
| Bottom Bracket | 110mm Shimano UN51/52/53 68mm sealed |
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Carriers |
Front: Thorn MKIII Heavy duty lo loader Rear: Thorn "531" Reinforced adjustable rear carrier |
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Principle dimensions: |
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Frame size |
525mm Short - Thorn size 92 |
| Stand over height | 775mm (mid tube) 795mm at head tube |
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Top Tube Length: |
525mm |
| Handle bar Stem | 90mm 40° rise |
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Total length |
1710mm |
| Wheelbase | 1052mm |
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Centre to Centre |
Front wheel - bottom bracket: 620mm Bottom bracket to rear wheel: 445mm |
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Main triangle tube diameters (outside nominal), |
Reynolds 853 conical tubing. We were expecting 725 conical tubing, but Thorn had upgraded the spec without changing the brochure. Seat tube: 31.8mm/28.6mm takes 27.0 seat post. tapered 0.8/0.5mm Down tube: 31.8mm/34.9mm tapered gauge - 0.8/0.5/0.8mm Top tube: 28.6mm/25.4 tapered gauge - 0.9/0.6/0.9mm |
| Rear Triangle | Reynolds 725 16mm seat stays and cranked 29 x 17mm oval chain stays 0.8/0.6 mm gauge. |
| Forks | Reynolds 531C (continental oval) with cast crown and Columbus Nivachrom rifled 1 1/8" threadless steerer. |
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Ceri-Siân's baby. A Thorn xTc, of August 2004 vintage. She is a 525mm/short top tube frame size. The colour is French blue. İStephen Dee 5 Sep 2004 ID P9058609 |
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Ceri-Siân's baby. A Thorn xTc, of August 2004 vintage. She is a 525mm/short top tube frame size. İStephen Dee 5 Sep 2004 ID P9058621
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Detail showing saddle, brake and rack fitting (L) Detailing showing fitting for the "Dutch strap" on the rear end. (R) İStephen Dee 5 Sep 2004 ID P9058617 (L) 5 Sep 2004 ID P9058618 (R)
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Rear triangle showing the Shimano Deore/LX tramission İStephen Dee İStephen Dee 5 Sep 2004 ID P9058613
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Bottom bracket detail showing the left hand crank and S&S coupling. İStephen Dee 5 Sep 2004 ID P9058616
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Bottom bracket detail showing the underside with cable routings and BB drain plug. İStephen Dee 5 Sep 2004 ID P9058623
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Detail showing forks and front rack (L) Detailing showing head tube badge, brakes and handlebars (R) İStephen Dee 5 Sep 2004 ID P9058614 (L) 5 Sep 2004 ID P9058611 (R) |
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Handle bar detail - the first job was to remove the "statutory" bell provided by SJSC and replace it with Ceri's "Cat" bell and add on her Trek Radar computer and bar bag fitting. İStephen Dee 5 Sep 2004 ID P9058624
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Page last modified 2 Jan 2006
