Double butted frame.
A single butted tube has a single butt, or thicker section.
Double butted frame. May 25, 2016 · So it's really double butting, but uneven double butting. We use straight-gage tubing on our standard titanium frames while our Supers are built with double butted tubes except for the seat stays (we even double butt the head tube and chain stays. If the tube is the same thickness throughout the whole frame then we refer to this as being butted but if it changes and is thicker on the ends of the tube and thinner in the middle then it is referred to as being a double butted frame. Here's an image that clearly shows what I mean. Built on an agile and ultra-light, double-butted 6061 Aluminum frame with a tapered head tube and featuring an Essor USA full carbon fork, the Black Label Series is a stiff and responsive ride. This design allows for a reduction in weight while maintaining strength and stiffness. Bicycle frame design basics 2. Triple butted takes the next step with three variations in tube wall thickness. Tange made a wide range of steel tubing, but they didn't make any crap. Inquire with us for special requests or custom orders. The Ritchey Guide to Butted Steel for Bicycle Frames Double butting. See full list on rei. The "double" and "triple" terms refer to the number of changes in the wall thickness of a tube. Aug 30, 2024 · Triple butted tubes serve the same purpose as double butted tubes but further reduce weight in the centre. These are common for the seat tube because seat tubes are cut to length for different frame sizes and take Jan 23, 2011 · I have read all the great information you guys have given me regarding the physical differences of double butted tubing on frames versus straight tubing. By the 1970s, they had expanded to make all the frame components, including stays, dropouts and lugs. It may sound funny but butting is serious business and means a lot for your riding. You won't find straight gauge on anything but Walmart level bikes, as butted tubes are pretty cheap in the context of $500+ complete bikes. Jan 29, 2021 · 1. Some Asian tube sets were triple or quad (as example Fuji's bikes from the early/mid 1980s used). CrMo 4130 Double Butted Frame, CNC Engraving in BB 4130 Classic Geometry 44 Headtube Dropouts with built in tensioners Weight 1. MAX – triple butted OMNICROM alloy. Chicken butts. com May 29, 2021 · “Double-butted” refers to the tubing used to make the bike frame. The ends of the tubes, where the joints are located, are reinforced to A single butted tube has a single butt, or thicker section. Tubes: strength and weigth 4. The ends of the tube are thicker, while the middle section is thinner. . SLX – designed for professional cyclists. Butted tubes 5. With progressive trail geometry, UDH compatibility, and clearance for big rubber, it’s ready for anything from techy singletrack to loaded bikepacking missions. Artificial age 7005 frames to T6 condition: age 6 hours at 200°F (+/-10°F) plus 4 hours at 320°F (+/-10°F). May 15, 2022 · SL – Super Leggera double butted OMNICROM alloy. Jan 18, 2011 · Straight gauge and butted tubing can be exactly the same outside diameter and have the same wall thickness on the ends, but the wall thickness of the butted tubing in the center is thinner. However, I was wondering if there is that much difference in the ride (other than a lighter bike) for guy like me 5'10" 160? Seems like Tange 900 is another less expensive, double butted chromoly steel, seamed, that was/is found on lower end frames, but is good quality. Most famous Columbus tubing that competed with Reynolds 531. Cold-drawn seamless tube. ) Tange started out in 1920, originally producing bicycle forks, and expanding to butted tubing in the 1950s. Even Civia catalogue only mention "Loring Steel", while one of their other model explicitly say "double butted 4130 Chromoly frame". 7 kg Sizes: 50, 53, 56, 58 Color and Finish included in price: Raw, Burnt, Black, Marble Custom color for frame and logo: +150 US dollars. Double butted is thinner in the middle than either end where the tube is joined or welded. We source all our Double Butted Titanium tubes from Reynolds in England. mostly seen in steel framed bicycles. Made from double-butted 4130 Chromoly steel, this frame is built to take a beating while delivering a smooth, lively ride feel. Double butted: double butted tubes have thickness variations at both ends, creating a tube with different thicknesses at each end. The 4130 Steel Line features 4130-grade chromoly steel, sealed hubs, light-weight components, and double-butted tubing, combined with designer colorways not seen anywhere else. As a quick aside, “double-butted” means that a frame tube has been constructed with variable wall dimensions whereby the ends, where the welds are placed, are thicker than the middle. 5mm wall thickness at the top, would not be strong enough to accept the heat of the welding. A tube can have thicker metal walls at the ends where it is welded and more strength is needed and thinner walls in the middle to save weight. (Tange History) Until the mid-80s Tange was probably best known for their mainstay tube sets, Champion #1 and #2 (later called simply #1 and #2) -- cold-worked, butted chrome-moly tubing May 16, 2013 · Single butted tubes are thicker at one end, like the seat tube which is thicker at the bottom bracket junction. Steel butts. *raw and burnt finish have no painting (only lacque) […] Dec 12, 2023 · The 4130 Steel Line earned its namesake from the double-butted 4130-grade chromoly steel used on the frame and fork that maximizes strength without making compromises on weight. This makes the bike stiff, strong and light. Double butted is having two changes, triple has three and (big surprise) a quad butted tube has 4 different walls somewhere along the tube's length. All mid to high end steel or ti bike frames are made with butted tubing. Butting can save up to a pound, but usually it saves less than a half pound between a butted and straight gauge frame of the same design titanium frame. Forks 3. Triple butting. Bicycle frame tube loads 3. Now with completely redesigned geometry to accommodate larger tire clearance and equipped with fork and seat stay rack mounts to be the perfect all-rounder. e, joints). Jul 24, 2025 · The 4130 Trail Frame & Fork Set is the perfect foundation for your next hardtail shredder. 1. We produce each bike model in a limited quantity and then retire them for good once the last bike leaves our warehouse. Read up here to learn all about steel tube butting. When frames are being constructed by TIG welding, the single-butted seat tube, with a 0. The seat tube is only a "single butted tube". One method to overcome this is to use a sleeve over the outside of the tube. Merlin Metalworks elevates its riders by using the best Best Titanium Tubing available. These are double-butted tubes, with different thicknesses at Nov 2, 2022 · When someone refers to butted they are talking about how thick the tube wall is in the bike frame. Spirit – triple butted OMNICROM alloy. However, Reynolds eliminates the need for this with bulge-butted seat tubes. Disc brake forks 4. The additional manufacturing required to achieve varying tube thickness increases the cost so the cheapest frames will be straight gauge, while the highest quality aluminium frames will typically feature triple butting. Butted tubing is can be single butted, where just one end is thicker; it can be double butted, where both ends are thick; and it can be triple or even quadruple butted, where it is necked down multiple times. Single butted tubes have a short thick section, a short transition section, then a long thin section. Feb 8, 2022 · Dive into the world of aluminum frame technology! Our blog explains its benefits, design intricacies, and how it can elevate your cycling experience. Trust us: once they're gone, they're gone. Jun 24, 2019 · We’ve all heard the terms “double butted” and “triple butted” used when referring to frame construction, and this is how steel tubes have been marketed for many years. Nov 15, 2015 · Post-war, 531 tubing took up where it had left off in cycling, and by the 1970s Reynolds claimed 531 frames and forks had been used in 24 out of 25 successive Tour de France victories. I am confused and lost, if there are any frame builder or welder out there, please can you confirm that this is double butted 4130 Chromoly? Oct 2, 2019 · the most simple way to explain butted tubes is this the tubing walls are thicker where needed for strength (i. double-butted is as it implies,meaning two inner tube wall thicknesses and so on for triple and even quad butted tube sets. -Walt 7005-T4 aluminum double-butted tube sold by spec. Dec 23, 2008 · At Spectrum, we select from both butted and straight-gage tubing when customizing your ideal frame. 🚴 What is a Double Butted Frame? A double butted frame is constructed using tubes that are thicker at the ends and thinner in the middle. The process of butting involves shaping the tube to optimize its performance characteristics. There is a thick butted section on one end, a thin section on the other end and a tapered transition section between the two. XCr – seamless, stainless performance tubing. Sources Reader questions/comments and replies – below: Mar 18, 2024 · When we talk about quality bicycle frames that are built with Double Butted tubing, it's only the top and down tubes that were "double butted". This results in a stronger and lighter weight frame which is a desirable characteristic for bicycles. Cold-Drawn seamless tube. Conclusion 6. and thinner else where as in the middle of the tube. Most common "butted" tubing is single or double but there have been triple and quad offerings. y6zgf7bn2qtaw4v2vajhotfhyl9cro5peu5km0pfqee