All the while, in the expanding all-road and gravel scene, there has been a dedicated 650B fanbase who have been diligently working to restore it to its former glory. Most are limited to tires under 40mm, even. Simone. WATCH THIS BEFORE DOING A 650B CONVERSION! Shimano GRX groupsets An overview of all Shimano Gravel bike groupsets, Safe Bike Helmets Helmets with MIPS, WaveCel, SPIN and KinetiCore. New bicycle gearboxes are coming onto the market quicker than at any time in history. Your email address will not be published. Putting 650B wheels on a 700C frame and fork. Tektro CR720 cantilever brakes have a decent amount ofadjustment and are known to work. However..he designed the bike around 700c wheels and would be astonished that you have fitted 650B, thereby upsetting all the correct design features that he had used in the frames constructions ie head angle, front end clearance, fork rake and trailall those important features that govern how a bike handles..OH! Does your frame still have cantilever/V-brake bosses on it? Yeah, we went with these v-brakes due to their massive adjustability. The rear brake conversion went off without much of a hitch, but I eventually just broke down and bought a used Trek XO-1 for cross-duty. Your reader needs to become aware that being certain is not the same as being right. make sure you have enough side clearance with the tire sitting slightly higher. Where do I measure from to see if fits. Let's examine the top secret Honda bicycle gearboxes and find out how they all work. Converting From 26inch to 650B on a Touring Bike Its not like you cant buy 26 tyres in the latest designs Maxxiss entire range still comes in 26. Or upgrade your tires/stem to give an other riding experience to this bike. Thanks, Greg. Converting a 26 wheel to 27 can mak a ride more smoother. Its meant to take a 650b but is that front and rear? Create enough clearance There are a few carbon replacement forks out there now, but the Fyxation Sparta is available at the right price and with all the right features. How will upsizing affect your frame geometry and handling? Those requirements allow us to address this efficiently but uncomprehensively. Continue with Recommended Cookies. Hi Heath, Thanks in advance for spreading the word! Thx. Get it? Hi Jan, we can not give you an advise. Your Meral is stunning. 700C vs 26 Inch Wheels for Bicycle Touring Paul|Mantel, A lock for your road bike or mountain bike has other requirements than bike locks for your e-bike or city , Gravel bikes are blowing up right now! Its the width that can be a challenge. to support us + get The Bikepacking Journal. If you need a good suspension fork, Manitou make the Markhor fork in a 26, 27.5 and 29 version. with a Future Shock E150 fork , please if you can tell me or anyone, am I able to convert the bike to 27,5 with , i that fork ? 26er to 650B conversion. V-brake question - Mountain Bike Reviews Forum My wife rides a 49-52 size (700c). No it that wont work unfortunately. 26 inch wheels is biggest size that will fit on frame size 17.5, so unfortunately you cant upgrade to 27.5 or 29 inch. Search "" across the entire site Search "" in this forum Search "" in this discussion. To be able to use the same brakes you have, youll need to be able to move the brake pads down the radius difference, in mm. Actually, this size is closer to the "26-inch" (ISO 559 mm) size than the "29er" (ISO 622mm) size, and even smaller than the "27-inch" (630mm ISO) size found on older road bicycles. Those requirements allow us to address this efficiently but uncomprehensively. A lightweight 650B wheel set with slicks can be over 1.5kg lighter than a heavy-duty touring wheel set with puncture-proof tyres. Mostly, its the frame, and specifically, its the space available from the inside of the seat stays, chain stays, and fork blades at the point where the tire passes them. Plus, theyre made in Chico, California, by a great company. Hello, I am a Cannondale Scalpel 27,5 from Portugal. Not always, but sometimes. For what I can find about your bike, it seems that both the frame and the front fork are not suited for a conversion. The outer diameter of a262.00, a 65042 and a 70023 tyre is about the same. To view the purposes they believe they have legitimate interest for, or to object to this data processing use the vendor list link below. There were several variations on the rim diameter and B triumphed, although Schwinn adopted 650C for their cruiser bikes for a while. Sometimes form does need to follow function. Kees walks you through the steps. If you use rim brakes you will need to make sure you have calipers with 12.5mm verticaladjustment. The outer diameter of a 38 mm 650B tire is only a bit smaller than that of a 700c x 20 tire. I've had a long and interesting relationship with this early 1980's Meral Sportif. I'm here to help you travel the world by bike! La horquilla es una Fox. With the promise of dirt-friendly tires and a more supple ride, theres plenty to like. Bikes are simple machines. Toe overlap is a term for shoe interference from the front tire, usually experienced at slower speeds when pedaling technical terrain or during maneuvers that require tight turning. I do not recall the exact year of the bike, but think around a 2004 (been in storage for years). I applaud your ingenuity, inventiveness and perseverance with this build. Can I fit a 27.5 on a 2003-04 trek fuel carbon full suspension? Info needed on cantilevers for 26 inch to 650b conversion - Google Groups Each issue features a collection of inspiring writing and beautiful photography. If you have any further questions, feel free to send us an email. conversion - Is there any kind of adapter to mount v-brakes or BMX-type calipers and centerpull calipers will commonly have adequate reach for this application. Please can i convert my bike rockrider 520 s 2015 ?and thank you so much. I was having trouble getting her to ride other bikes, and she said they all steered funny so I checked the trail on the old racing bike (a 49 cm. I have a 1986 stump jumper with 26 wheels . Totally agree. There may be other sources on the internet, but here is oursand it is 100 percent true. I have tried searching the internet with no luck. Many riders know that taller stems mean more hours of comfortable riding. Like the others here, Id like to know if I can convert to a larger wheel set. A different manufacturer which measures its products on the outside may at the same time end up with 262.15. I still have yet to tackle any conversions, but in order to make the bicycles work for me, they have goofy set ups in order to work for me and sometimes know it all men have the nerve to critique them. I advice you to keep in consideration the space what is leftover in your frame. What is most pleasing [about the the frame] is that someone is still putting it to good use and still enjoying it not matter what it may or may not have been originally designed for. The derailleur and shifter are extremely solid, and it gives you a lot of options. I would like to update the tyres on the bike too 27.5 from 26 .. is this possible? If a 27.5 rim and tire wont fit in the rear, are there extensions available to get the clearance needed? A lot of bikes are being converted to 27.5 and theres a lot to be said for doing so, but it doesnt use the full potential to be had from a 27.5 wheel. The only time it ever presents itself is at very slow, very tight u-turns anyway. Rear shock is in need of changing. Zero sales in a decade. Here is a chart that will help you comparelots of different tyre outer diameters. Figure out the blanks and youre on your way. But unfortunately, I think the local bike shops were right. However, this is not the displayed value. Screw that troll, enjoy your bicycle. Ask yourself the following questions. Much later, circa 2007, with Kirk Pacenti on the front lines, 27.5 mountain bike wheels suddenly hit the scene. The New Brompton Folding Bike Has 2.4 Tyres For Off-Road Terrain, Belts Are Now Better Than Chains On Bicycles (135,000km of Testing), Biking The Otherworldly Landscapes of the Jordan Bike Trail (Video). The go to sidepull for these conversionsthe one that fulfills the new reach requirement more often than notis the Tektro 559 sidepull. Kees walks you through the steps. If you are simply looking to swap tires on a bike, consider your bikes geometrythe reason there used to be 700A, B, and C. If a bike was designed around 25mm tires and you manage to squeeze 2 rubber into the frame, there will be consequences. The bicycle manufacturing industry has still not stepped up to the plate in terms of optimizing frames and wheel sizes for all riders of differing heights. Took a long time to wean her off of that crazy geometry!!!! if(typeof ez_ad_units != 'undefined'){ez_ad_units.push([[468,60],'sheldonbrown_com-large-leaderboard-2','ezslot_3',822,'0','0'])};__ez_fad_position('div-gpt-ad-sheldonbrown_com-large-leaderboard-2-0'); Last Updated: The result is terrible handling. You wont always want to use your touring bike for touring. Save my name, email, and website in this browser for the next time I comment. Pleased? The same goes for the rear there needs to be sufficient height clearance in the rear triangle for the wheels to spin freely. If you really need so much seat pillar projecting from the seat cluster and such a high riding position, I suggest you get a frame that is more appropriate to your inner leg and body length. I have the same bike. Understanding Bike Fit: How Does It Work? Is my Santa Cruz Nomad 2013 (L) full suspension Aluminum able to be converted from 26 ->27.5? Mafac Raid brakes-to supply adequate reach to the 650B rims. The least you could do would be to buy one of those elegant Stronglight extra long headset lock-nuts that would both add about 30mms of extra grip to the quill while at the same time making the bike look less ridiculous than it does now As implied, for 52-58cm sizes, its often a matter of taste. I have a 2013 Specialized Enduro Evo (26er) I know the newer versions of this bike come standard with 27.5 or 29ers, but I am not sure if that was a frame modification from the factory, or if there is enough room on my model year to make the conversion. Don;t follow the latest fad. Not all 26 inch frames are compatible with a 27.5 wheel, as it can easily rub on the stays or bottom bracket. BIKEPACKING.com is dedicated to exploration by bicycle. BB Drop is the distance between the height of the hubs and the height of the bottom bracket at the center of the crank bolt. Q2: How bigga tire will I be able to fit? Today, 27.5 wheels have all but taken over. This resulted in a greater availability of high-quality slick tyres in the latter sizes. For many riders, the large diameter of a 700C x 45mm or 29 x 2.1 tire might feel too big. More here. If you've learned a thing or two from me, consider supporting my independent resources, Bikepacking . 650B Retrofitting Issues The major obstacle to switching from 622 (700C) to 584 (650B) is the issue of brake reach. My advice is to visit your local bike shop for advice, as theyll be able to take a better look at your bike. You could likely get better braking with Paul touring cantis or some v-types-Paul or otherwise-without resorting to travel agent-type workarounds. Check out their 24mm IW AdventureCarbon wheels, affordable 29mm IW TrailWide, and their Dynamo specific wheels. No, that is not possible, sorry. For extended trips abroad 26 inch wheels and tyres are readily available if required, along with 8 or 9 speed cassette s, Im using XT thumb shifters and butterfly bars on my thorn, square taper sks BB. Giant xtc 1, hardtail disc brakes (2009). The AdventureSport Disc, as used here, are a good option for 42-48mm tires. PSA: Box Components v-brakes have enough adjustment to run 650b wheels on your old 26er frame. For this project, we used a size medium Advocate Lorax, a bike designed around 700C x 38mm tires, and an already adept gravel bike. If you're like me and aren't impressed by cantis, and won't fork over the cash for Paul brakes, this is great news. Michael. 26" Long Haul Trucker? Wondering what is the smallest size, good quality road tire available for 27.5/650b? I posted a thread about this on this forum! 26 inch wheels have their place on off-road adventure touring bikes, in fact I have listed over 30 different options in thisAdventure Touring Bike List. Posted on October 10, 2021. Will a 27.5 wheel and tire fit in the rear? Thats a lot! The morons comment appears at the end of this post, and because it is full of misconceptions and mythologies couched as expertise, Id like to thank him for inspiring this post. The cantilever bosses are fixed on these old steel frames, and your brake options are limited and braking performance is likely to be poor. This leads us to the first factor to consider before tackling a 650B conversion: the bikes intended tire size. Enthusiastic trail runner and mountain biker. For one, shorter spoke lengths make stronger wheels. Im afraid that a 27.5 wheel wont fit, but if you want to be really sure you could measure the space left between the fork and the tyre you have now. And yes, this frame had toe overlap with the larger 700c wheels, and it was indeed designed that way something that happens when small and even medium sized frames are built around 700c wheels. I have bought a Marin Attack Trail 2008. We took an Advocate Lorax and made the switch. . For reasons cited above and more, this isn't the bike. For shorter riders, the use of 650B has much to do with bike fit. But what if you wanted to ditch a bit of weight and ride faster on smoother roads? That said, for the new Heron Sportif frames that are debuting in January, 2017, we will offer a 50 cm size, as well as a 64 cm. Any questions on the matter? I have carrera vengeance 26 wheel. 650B (584 mm) Conversions for Road Bikes - Sheldon Brown There are a fewreasons why 650B wheels may be agood idea for you. Consider it a rough guide, a survey of what it entails, not a step-by-step How To. The conversion of a standard 26 can come with a range of problems, such as inadequate frame clearance or geometry trouble. In addition, 30% of the Oregon Outback route is on pavement, so this tire style is meant to roll as fast and grip as well as a good road tire would, offering of the best of both worlds. Apparently, the original Shimano 600 French headset is an absolute eyesore, when paired to the tall Nitto stem. Both the Salsa Cutthroat and the Kona Sutra LTD (though in marketing terms theyre drop-bar 29ers) can fit 29 x 2.3 tires via the use of a 72mm bottom bracket shell. one, however, will be built to order (but cost no extra because of it). Im trying to see if a 27.5 wheel would fit in the fork. Click here to see more about my personal IRO Jamie Roy 650B conversion. It sounds like your Trek 710 is working out. Hope your leg is better. What are the factors at work that cause these changes? If you could contact us through our customer service and provide us with a few more details and/or images, we may be able to help you even better. I am interested in perhaps one day building an old style 650b rando bike from an older steel frame and this is quite inspiring. You need to be logged in to use these features. Continental or Michelin could have the ones you are looking for. With a 650B x 42mm tires, youll want a bit less BB dropideal would be 63mm. The Lorax has a 75mm BB drop, which is a little low. To be sure your specific bike can make the conversion I would just pop by a local mechanic if you are in doubt and new to this. Paul|Mantel, I have a 2006 specialized bighit 3 will it be possible to convert the rear to 27.5? All four are specced with 47mm WTB Byways. Hi Nola, I own a 753 Meral racing bicycle from 82. Es posible la conversin a 27,5? . document.write(document.lastModified) A 650b/38mm wheel actually suits the dimensions of the LHT better than a narrow 26"/32-38mm wheel, which leaves gaping clearances and unfamiliar handling. I like this bike, I have sentimental attachment to this bike. The benefits are fairly obvious. Converting your 26 mountainbike to a 27.5 or 650b wheelset isnt as hard as you might think. Better stopping power as well. (mid-90s) Mainly for delivery work. Otherwise, you might just be trying to wade through all the marketing jargon to see if 650B is a good fit for you. Eventually, the C permutation won out, and people altered the outer diameter by mounting different tire sizes on a 700C rim. Shimano groupset overview All Shimano road bike groupsets listed, How to Determine the Correct Saddle Height. Hola, tengo una Spec Stumpjumper FSR Comp 2008 de 26. But if you wantedto use 261.25on a bike designed around 262.00, you would lower your bottom bracket by about 2cm! I have a Scott Spark 2007 model with 26 wheels . I have a 2012 26 Scott Scale 80, does anyone knows if the convention works well in this bike? First, lets start with the basics. I dunno if its possible but Im hoping someone may have some advice. Many bicycles from the 1970s on have way too high bottom brackets to begin with, so lowering the bottom bracket a bit will improve the bikes handling and cause no negative side effects. You cant go on a forest ride without seeing one. Dude, you have a sweet ride there and the haters can say all they want but in the end, you did your research and now you have a more comfortable and versatile bike to show for it. Avid Single Digit 5 brakes work for me on velocity/weinmann rims. What was needed to do so, Please let me know. The frame is most probably a Special CNC 700C frame with superb workmanship, unfortunately my present purse would not allow me to have such a frame built to such a high standard. I have a Santa Cruz blurt 2015 with 26 wheels and wanted to convert to 27.5 just wondering is it possible, Hi Finn, Will a 700c or a 27.5 wheel fit my bike? For what's worth, the bike rides like a dream. It is all going to depend on the outer diameter of your tyre. Ive mounted Col de la Vies to discover they measured a width of 32.5mm, not quite 38mm. Never mind the chrome hilights, the wonderful deep purple flamboyant paintwork..you have turned the bike into a travesty of what the designer/framebuilder intended and, At your weight 650Bx42 options are going to be killer. convert 700c to 650b - Restoring Vintage Bicycles from the Hand Built Era Hi Ryan, You will have to change the front fork to a 27.5 one. Fortunately for everyone 650B tires are far more plentiful now, too! I am 60 with a very short torso and i ride mostly in the fitness stance. From memory they have something like 35mm of vertical adjustment for the brake pads, and in theory you'd need 19mm of adjustment for a 26" to 650b conversion. Pitbull bmx brakes might be able to reach. If its not Ill stick to my 26. Paul used to offer the long version of a V brake with straight cylindrical arms, and there you could raise the pads to covert a 26" frame to 650b, say, but taking 700c down to 650b wouldn't work too well. 26" to 650b conversion | Stumpjumper : r/bikewrench - Reddit Some frames may have forks or rear stays that are too narrow to permit the use of wider 584 tires, but most often this won't be a problem, since the stays and fork blades get wider apart as they head toward the hubs. Thank you for your question. On my Velocity Synergy 650b rims, these tires are about 37 mm wide running them at 46 psi rear and 42 psi front. Click to expand. Why not just slap a pair of chunky 700C x 45mm tires on your cross bike and call it a day? Sometimes it may. While 26 slicks are broadly only available in 32, 38 and 50mm widths, 650B . You can get by with 1mm, but your wheel may not stay perfectly true forever, so well, 10mm (for a 5mm per side) clearance is our recommended minimum. You also need to take in consideration how much space there is left for tire clearance. Hi Tom, But, what about the actual numbers? 64s will be stocked. Whether the builder considered this a necessary compromise to please a particular customer, we will never know. I hope it is possible! By having two different wheel sets, you can transform your bike depending on what type of rideyoure planning on doing. He did use the honjo fenders meant for one of my bikes. Your Meral is one of the most beautiful and well proportioned looking steel restorations Ive ever seen (if you ever decide to sell it). And, as I have stated in past posts, you dont want to convert a frame to a smaller wheel size if your frame has a lot of bottom bracket drop. There are a few 700C drop-bar bikes that can fit big tires. Personally I dont think so ,.. we may end up putting 50mm tires on it to beef it up a hair though. The latter usually means 27.5 x 2.1 semi-slick tires or bigger XC rubber, like the WTB Nano on the Bombtrack Hook EXT-C. And road plus often refers to 47-50mm tires that are generally devoid of tread aside from small side knobs, like the WTB Byway, or have a slight texture like the tire that started it all, the Compass Switchback Hill 48mm. Thanks for all the info! Unfortunately, most 700C drop bar cyclocross, gravel, and touring bikes have clearance restrictions well under 45mm. I like the Soma as it rides nice and supple like the old Tange 9 series. What fork you have at the moment?