Ride Irish!
Irish Cycles and Endurance Sports, LLC
www.irishcycles.com
Fayetteville, NC
info@irishcycles.com
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Irish Cycles Classic Race Frame
Born in 207 out of the necessity to provide a bold and audacious frame capable of negotiating American Criteriums at 30+ mph, yet comfortable enough to allow for a four- hour training ride, the Tir na nOg race frame is our original frame. When we set out to create our frame, we researched heavily the materials that were available and what we thought was the ideal geometry. In the end, we went with an aggressive geometry that is conservative enough that it will not leave you feeling "squirrely" on a 50 mph descent or a 15 mph cool-down leg of a fast training ride. The Tir na nOg has been our best seller with well over 200 frames through out the United States.
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Frame
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Seat Tube (1) |
Virt. Seat Tube (2) |
Top Tube (3) |
Head Tube (4) |
Chain Stay (5) |
Seat Tube Angle (6) |
Head Tube Angle (7) |
XS |
48cm |
50cm |
51cm | 105mm |
406mm |
73.7° |
72.5° |
S |
51cm |
52cm |
53.5cm | 125mm |
406mm |
73.5° |
72.5° |
M |
54cm |
56cm |
55cm | 155mm |
408mm |
73° |
72.5° |
L |
57cm |
58cm |
57cm | 185mm |
408mm |
73° |
73° |
Unlike most companies that change their design and their composition to give you "better"' or more "advanced frames", we took a cue from industry greats, such as Look, Cinelli, and Giant, and offer the same race-proven geometry across both our Tir na nOg frames but built them out of different carbon fiber mixtures. The base line Tir na nOg features a proprietary mixture of high modulus Toray carbon fibers and weighs in at approximately 1180 grams for the medium-sized frame. This frame was designed for the typical Category II or III U.S. racer who chooses to excel in criteriums and shorter road races of 65 to 100 miles. The unique blend of carbon allows for strength, power transfer, and dampening on a scale ranking up there with the big Italian names.
Prior to 2012, we featured an ultra-high modulus (UHM) version of the frame for larger and power riders that promised to deliver every advantage of weight savings and power transfer, while maintaining rideability and durability. We retired it for 2012 and replaced it with the Tir na nOg II.
Both the High Modulus and Ultra High Modulus frames are finished off in a 12k carbon fiber compressive weave exterior with a two-tone finish of natural carbon fiber accented with white or orange highlighted by a conservative, yet stylish, water-adhered decal set that is clear-coated for durability.
Special attention was paid to the development of the seat stays, 50 mm diameter downtube, and "flat sprint" bottom bracket to provide you with a rigid spine from which to launch relentless attacks on the peloton. When you look closely, you'll notice the slight hour glass seat stays designed along a pending pentagonal, gently tapering design, that maximizes lateral stability and locks the wheel in tight. Gone is that whippy feeling you feel so often with other frames!
Our rear seat cluster is a tight fluid design, integrating a single yoke "Y" seat stay into the brake bridge to give maximum brake support under load and support dispersional loads on the top tube and seat tube. This ensures that you not only brake cleanly and solidly, but that you get as confident a feeling from the rear end of the bicycle as you do the front.
When selecting your correct frame size, it is important to take into consideration not only your seat tube (seen as measurements 1 and 2 on our chart), but also your top tube requirements (as seen in measurement 3). We offer four sizes: Extra Small, Small, Medium, and Large. These frames are semi-sloping designs that rougly measure the equivalent of 48-50cm (Extra-Small), 51 to 53 (Small), 54-56 (Medium), 57-60 Llarge), in traditional geometry. We believe that the best size frame is one that is as small as possible along the seat tube (1 or 2) while allowing the upper body to lay out relaxed. This results in a comfortable ride that maximizes the mechanical properties of the bicycle and restricting weight to the lowest amount possible.
To determine the proper Irish Cycles frame size fit for you, we recommend you see one of our dealers. If not, or if you're buying through the web, you will first have to get a few measurements. The first measurement needed is your inseam. Stand with your back against a wall, your bare feet approximately 6" apart on a hard floor. Stand up as straight as possible and look towards the horizon. Place the spine of a hard backed book, or any other 90 degree angle item between your legs with one edge against the wall and pull it up firmly into your crotch. Have some one measure from the top edge of the book to the floor, in centimeters. (You can convert inches to centimeters by multiplying inches by 2.54.) Repeat two or three times, for consistency, and average the results to get your inseam length.
Now multiply the measurement of your inseam by 0.67. This will yield your approximate-sized down tube required on a bicycle. Compare that to our chart above and always round down to whole numbers. For your top tube measurement, we recommend you compare your current ride's measurement against our top tubes as listed in the above table or see a professional to obtain your true top tube measurement.
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