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People have been asking us "when are you going to make a hardtail?", "When are you going to make a single speed?", "When are you going to make a super light XC race bike?", "When are you going to make a travel bike?"
We've got answer for all of you.
The answer is NOW.
Briefly:
First and foremost, the The Ibis Tranny is a strong and lightweight monocoque carbon fiber hardtail. And a lightweight, laterally stiff, vertically compliant one at that. The Tranny goes far beyond being just a hardtail, resulting in some unique features. The features are a result of the removable, adjustable-length, chainstay. This means you can transform it from a single speed to a geared bike to a travel bike in a matter of minutes.
How Do We Do It?
Take a close peek at the section behind the bottom bracket. There's some hidden equipment down there we call the "Slot Machine". It's not really a machine, but it does have a slot that makes it adjustable. That allows us to lengthen the chainstays, so we can make this thing into a bona fide single speed. It's lighter than an eccentric bottom bracket, and cleaner than a chain tensioner. Look at our little animation of the Slot Machine in action. One bolt cinches the whole thing up.
Not much of a Weight Penalty
The Tranny frame weighs about 1350g, which in America translates to about 3 lbs. With the WTF group, the complete bike weight is about 19 lbs. Not bad for such a versatile machine.
FRAME SIZING:
| NOMINAL SIZE |
Small |
Medium |
Large |
X-Large |
| SEAT TUBE LENGTH (A) |
15" |
17" |
19" |
21" |
| HEAD TUBE ANGLE (B) |
70° |
70° |
70° |
70° |
| SEAT TUBE ANGLE C |
73° |
73° |
73° |
73° |
| EFFECTIVE TOP TUBE (D) |
560 (22") |
580 (22.8") |
605 (23.8") |
630 (24.8") |
| HEAD TUBE LENGTH (E) |
105 (4.1") |
115 (4.5") |
135 (4.3") |
155 (6.1") |
| CHAIN STAY LENGTH (F) |
425 (16.7") |
425 (16.7") |
425 (16.7") |
425 (16.7") |
| WHEELBASE |
1034 (40.7") |
1065 (41.9") |
1091 (43") |
1117 (44") |
Measurement in millimeters unless otherwise noted
Seat Post Diameter: 31.6 mm
Front Derailler: 34.9 mm
Headset: Integrated standard
BB height: 12"
Recommended fork travel: 100mm
Geometry based on using a 100mm travel fork with 10mm sag
Availability of stock is January.
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