Sirius R853
Sirius R853
From: GBP 395.00
“it’s all the trail bike you’re ever likely to need.” – WMTB
Product Description
GEOMETRY
Sizes available: 16.5″, 18.0″ & 19.5″
| Small | Medium | Large | |
| A: Head Angle | 69 | 69 | 69 |
| B: Seat Angle | 72 | 72.5 | 72.5 |
| C: ST C-T | 419 | 457 | 495 |
| D: TT Length | 580 | 592 | 605 |
| E: HT Length | 120 | 120 | 120 |
| F: BB Height | 317.5 | 317.5 | 317.5 |
| G: Chainstays | 413-430 | 413-430 | 413-430 |
| H: Wheelbase | 1064.9 | 1076.9 | 1089.8 |
| BB Width | 73 mm | Headset | 1 1/8″ |
| Seat Clamp | 29.8 mm | Max tire | 2.5″ |
All angles are based on a 480mm (axle to crown) fork height or a 130mm travel suspension fork.
See geometry schematic at the bottom of the page for more information.
The frame is disc specific and is designed to take a 90-130 mm travel fork.
GEOMETRY SCHEMATIC
RECOMMENDED USE
| RACE |  |
| XC | |
| ALL MOUNTAIN |  |
| ADVENTURE | |
| HYBRID |  |
| FREEDRIDE |  |
Bicycle Trivia: CrMo steel really is a super-alloy. 4130 CrMo steel has a tensile strength roughly 15% greater than 3Al/2.5V Titanium. Reynolds 853 is more than twice as strong as 3Al/2.5V and 25% stronger than 6Al/4V Ti. For more, click here.
WHAT’S NEW?
-
Reynolds 853 butted main tubes
- Custom tapered head tube (34/44 id)
-
Gusseted TT/HT/DT junction
-
Sliding dropouts
-
19mm seatstays
-
Bridgeless chain stays
- 2 sets of bottle bosses
-
Curved seatstay bridge
WHAT’S BEEN KEPT?
-
Classic Pipedream trail geometry.
-
Heat treated 4130 CrMo stays
-
Double bent stays (traditional ‘A’ seatstays)
-
Clearance for 2.5″ tyres
-
73 mm bottom bracket (BB) shell
AWARDS & RATINGS
Additional Information
| Overview | The first incarnation of the Sirius used ‘No Hype,Just Pype’ – a custom drawn,heat treated,double butted 4130 CrMo with a strength comparable to Reynolds 631. It was and is more than strong enough for it’s intended use. However,our US and Japanese distributors wanted a branded tubeset which is why we built the frame in R631 for their markets. It was 5 more years before our Sirius frame had an upgrade and frankly,it was a challenge to figure out what to do. There were reasons we made the choices we did back then and we confidently stood by them. Tubing choice,geometry,intended usage were all carefully considered after considerable research,riding and prototype development. Why the changes? Perception is a powerful thing and is often what shapes our choices. Reynolds 853 (among few others) justifiably has a high reputation,backed up by technology,race-results and heritage. It’s proven. Component technology has made some big advances – as has the skill level of the rider – and we know that a well designed hardtail can take the fight to the trail as well as any short/mid-travel full suspension frame. The hardtail is here to stay so why not build it with the best materials available – it’s going to be around for a long time. As a final note,the sliding dropouts offer more than just singlespeed capability,650B fit fine and offer yet another wheel choice. |
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1 review for Sirius R853
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Rating by pipedream on April 26, 2012:
“…the redesigned Sirius delivers in spades.”
“The sorted handling, impeccable ride quality and 130mm fork compatibility mean it’s all the trail bike you’re ever likely to need. Light, lively, versatile and a whole bunch of fun, it’s also exceedingly good value.”
“Strong enough for 130mm forks yet lively enough for trail duties, this is a consummate all-rounder.”
What Mountain Bike Magazine