It should also limit how much pressure you can apply to your frame’s tubes or seatpost as not to crush it. You whip one of the wheels off, rest the bottom bracket shell on its support on that beam, and then secure the dropouts on the quick release axle. Furthermore, there are two kinds of steel front derailleur braze-ons, ones that are stamped out of thick, sheet steel, and ones that are investment cast. You’re right; clamping the top tube is a bad idea. FREE Shipping by Amazon. Dear Julien, I suppose a “Conan the Barbarian” type mechanic (and I’ve seen my share) could ruin anything, but I wonder about the strength/integrity of a seat tube and braze-on so easily “beer canned” under normal use? For those reasons, I use a stand (custom made, in my case) that holds the BB and the front forks. I’ve gotten a lot of mixed information about how to clamp a carbon frame into a repair stand. Wide selection of bike tools and repair stands from Park, Lezyne, Pedro's, and more. It's also a good idea to install the old aluminum post before taking your bike to a shop for repairs. (20mm with option adapter). — Mark. Joël Balez, Hutchinson R&D projects manager. The Sprint Repair Stand rotates around 360 degrees for easy access to the bike and adjusts in height from 30 to 48 inches. With a 4.3 star user rating, the Feedback Sports Mechanic Stand is high-quality at a value price. $29.95 $ 29. 5.0 out of 5 stars 7. © 2021 Pocket Outdoor Media Inc. All Rights Reserved. You have two options and only two. Or, on my bikes with oddly-shaped posts, I’ve used a fork mount stand. Novel Hirobel carbon-friendly repair stand clamp launches on Kickstarter. Clamp Design – the clamp is one of the most important elements of your bike repair stand. It is ideal for carbon fiber bikes because there is no chance of damage since there are no clamps on the cross bars of the bike. So what if you have a carbon seatpost? Clamp-style stands hold the bike by the seatpost or frame tubes (although clamping the tubing can damage your frame, so we’d recommend the … Park Tool PRS-7-1 Bench Mount Bicycle Repair Stand. I clamp my bikes by the seat post (they are aluminium seat posts on my bkes) for maintaince tasks that dont involve a lot of force (like removing bottom brakets) If I need to apply a lot of force then I put my bike on the ground and support it with my body. THE SOLUTION The HIROBEL is a specially designed clamp for bicycle repair stands which makes it easier to work on your bike. While you could in theory run another 12-speed chain through that derailleur (like Campagnolo or SRAM Eagle), if you are using a SRAM AXS 12-speed rear cassette, the only chain you can use is the SRAM Flattop 12-speed chain. The general rule has always been to clamp the bike by the seatpost (assuming the repair stand in question involves a clamp, as most do.) He is also a custom frame builder (www.zinncycles.com) and purveyor of non-custom huge bikes (bikeclydesdale.com), a former U.S. national team rider, co-author of “The Haywire Heart,” and author of many bicycle books including “Zinn and the Art of Road Bike Maintenance,” “DVD, as well as “Zinn and the Art of Triathlon Bikes” and “Zinn’s Cycling Primer: Maintenance Tips and Skill Building for Cyclists.” He holds a bachelor’s in physics from Colorado College. Also, the flat sides fit well on clamps that also have flat sides and minimize rotational slipping even more. Get 15% Off Membership →, New Year, Fitter You. I couldn’t help but wonder what you’d do with a rear derailleur hanger that was misaligned? And each time he switches the wheel and chain, he has to make a large adjustment to the derailleur b-screw. That's because a seatpost can be replaced relatively easily, while the bike's seat tube is a bit harder to replace! 99 $38.99 $38.99 Some clamps don’t always have a great rotation amount, which means that you might find it difficult to make some of those trickier repairs. 1) You must remove the carbon fibre seatpost and replace it with an aluminum or alloy seatpost and then clamp that seatpost into the workstand. —Larry. Can’t say I’ve done this on a Colnago Master, which I assume is steel, but I have never had an issue on the hundreds of steel frames with front braze-on mounts I’ve worked on over the years. Now you should be able to repair your bike without breaking it! Your bike can be rotated while in the work stand, giving easy access to all areas. I have always used an aluminum seatpost and clamped that. It better distributes stresses and loads through the bicycle frame, offering superior stability while eliminating possible crushing or damage to thin-walled and shaped tubing. Dear Mark, You mentioned that you had someone with the 10-33 cassette on a second set of wheels. Or, on my bikes with oddly-shaped posts, I’ve used a fork mount stand. You can read more about the compatibility of SRAM road 12-speed chains, cassettes and chainrings. That will help protect it from damaging scratches and help prevent the logo from rubbing off. … Repair Stands The mechanical clamping action of repair stands concentrates powerful loads in a small area so you should always clamp your carbon bicycle safely. To the OP: Depends, but for a CF frame almost always on the seat post. Sturdy clamps to help hold your bike securely in your favorite repair stand. The repair stand clamps the octogonal rail of Hirobel’s Carbon Frame Clamp while your bike rests on elastomer bumpers, secured down with high-density neoprene straps. The bumpers and straps are gentle on your bike and require far less force than a repair stand clamp to keep it stable. [UPDATE] In contrast to my clamping method shown in the video I’ve learned since that it’s a much better idea to clamp the bike on the seat stay. Some stands hold the bike by the fork, requiring you to remove the front wheel and clamping the fork. When the wheel cannot move then the excessive loads on the dropouts can damage the frame. If the seatpost is carbon, stick an old aluminum one in there during repairs. We placed the frames top tube on the left wheel and adjusted the frame … That said, as a framebuilder who used to subsist on doing a lot of repairs on steel frames, I have dealt with seat tubes that were cracked at the front derailleur braze-on. Personal ID for long-distance cyclists - fits on your wrist and weighs nothing. Dear Lennard, Shops and professional mechanics will appreciate being able to lift a bike onto the stand without worrying about cracking a frame or seat post or having it flop around. Carbon frames are not suited to use on home trainers with a fixed rear axle. Hirobel is a specially designed clamp for bicycle repair stands which makes it easier to work on your bike. The bike can be rotated 360 degrees, and will hold firm in any position to allow clear access for any kind of repair. — Julien. #1 Top-Rated Repair Stand www.REI.com When the customer switches wheels to the set with a Force AXS 10-33 12-speed cassette, he has to switch to a Force AXS Flattop chain, as its larger rollers match the tooth valleys in the cassette. don’t extend beyond the M iN MUM NSERT line marked on the seat post. KAC Overdrive Bike Frame Telescope Mount Bar Adapter (Quick Release Clamp Version) - Bicycle Cross Bar - for Y-Frame, Dual Suspension, Cruiser Bikes – RV Use Prohibited 4.6 out of 5 stars 49 $35.99 $ 35 . The bar is octagonal shaped and allows you to clamp onto it much tighter than you would your frame or seat post. I do remember something about SLX tubes having their internal ribbing oriented to reinforce this area but whether the tubing was Columbus, Reynolds, True-Temper, Oria or Deddacciai, it was always pretty simple to bolt on the front derailleur securely and then check the alignment in relation to the chainrings and if things didn’t line up just right, gently and carefully pull or push until it was perfect. The clamp on most home mechanic stands comes with a warning: very lightweight aluminium or carbon bikes shouldn’t be clamped by the top tube, and you’ll need to use the seat post. Now, if you are extremely careful and wrap a rag or something around the carbon post, and you're not doing extensive repairs, it's unlikely that an adjustable clamp will snap a carbon post. I’ve read a few threads about clamping a carbon bike by the top … For one, it’s worth noting that if you use a clamp-on type stand with a carbon bike, only attach it to your seatpost, as other areas can be damaged by the forces exerted. New Year, Fitter You. Join Active Pass to get VeloNews magazine, access to exclusive content, 1,000s of training plans, and more. — Taber, Dear Taber, A modern bike repair stand will have a specialized clamp that is easy to engage while you are lifting the bike. Regardless, it only takes one small mistake to ruin a carbon post, so it's best to use the aluminum post method. However, some bikes with seat masts require a special custom clamp, and some bikes don't show enough seat post to clamp. I suspect that bending the braze-on played a role in some, if not all, of those tube failures. I’ve always done the same thing with ’em on the front as well, simply bend the whole works (using the derailleur itself as a lever) until the cage lines up correctly. Get 15% Off Membership →, compatibility of SRAM road 12-speed chains, a rear derailleur hanger that was misaligned, tire airtight without the need to use a sealant, Zinn and the Art of Road Bike Maintenance, Zinn’s Cycling Primer: Maintenance Tips and Skill Building for Cyclists, Technical FAQ: SRAM AXS Flattop chain compatibility, Technical FAQ: SRAM 12-speed mullet drivetrains, unsticking a bottom bracket, Technical FAQ: Combining eTap AXS MTB and road components; tire balm. It's worth the hassle if it means saving a $100 seatpost! Dear Lennard,I’ve gotten a lot of mixed information about how to clamp a carbon frame into a repair stand. Are you looking for a work stand for your mountain bike but don't feel like forking over the big bucks for a "shop worthy" model? Sign-up below to get our free ebook as part of the "Weekly Wrench" newsletter: If you are among the many riders who are on carbon bikes or at least using a carbon seatpost, you might be wondering: "Where do I clamp the bike when I put it in a repair stand?". With removable aluminum ones I’d do the same, but only after making sure I had a replacement, just-in-case, though I’ve never had one break off. Then you want to clamp "a" seatpost instead of "the" seatpost. If using soft travel cases or … Excellent selection of quality bike tools and workstands from all the top brands. #1 Cyclist ID www.RoadID.com If you're working on the dropper, you lean the back wheel against the stand and put a toe strap around it so it can't move. I know that you can often get away with tweaking a front derailleur boss, and your method of bending by pulling on the derailleur itself is better for this issue than bending the braze-on alone with a Crescent wrench, because the derailleur cage probably is what is getting bent more than the braze-on or the seat tube. You never know when someone might clamp your carbon post a little too tight. I have always used an aluminum seatpost and clamped that. ― Lennard, Dear Lennard, Bicycle Repair Stands www.REI.com New Year, Fitter You. Most repair stands feature a clamp that you tighten around the seatpost but the PRS-22 is an entirely different design in that your bike is supported by a central beam. I have used Feedback stands on aero bikes, I would clamp either just below the saddle (turn the clamp so the open end faces the rear of the bike). If you bend back on one of these, you can start peeling the long, front edge away from the tube along a crease in the stamped steel; I have seen this happen. On the X01 Eagle 10-50 12-speed cassette, we used a GX Eagle chain. Dear Lennard, Tools and Workstands www.PerformanceBike.com Whether it's because of inexperience or lack of time, I'm sure it happens. First up on our list of the best bike repair stands is this PCS-10 Home Mechanic Repair Stand from Park Tool. The clamp is an add-on for your existing stand that clamps in itself where the frame or seat post normally would. We first clamped the jaws of our stand onto the designated area of the bar nearest the left rubber wheel. Stock up on bicycle repair and maintenance help and advice without leaving the house. This needs to be well padded, adjustable, with easy rotation, as well as looking good too. Excellent selection of quality bike tools and workstands from all the top brands. Wide selection of bike tools and repair stands from Park, Lezyne, Pedro's, and more. Who's it for? There was no need to change the SRAM X01 Eagle AXS 12-speed rear derailleur, because it works with both chains and cassettes. Once the bar was installed it’s very simple and fairly nice to use. I’ve gotten a lot of mixed information about how to clamp a carbon frame into a repair stand. By spreading the load over a much larger area, the Silca/Hirobel Carbon Frame Clamp reduces how much force is required to hold the frame or bike in place. The “Euro-Stand” fits all bikes with axle diameters up to 15 mm. Never clamp the frame. That means that you'll take your carbon seatpost out, stick an old aluminum one in there, and clamp that old post into the repair stand. Tightening it onto a curvy carbon tube and tightening it enough to secure the bike is a recipe for frame damage. I’ve read a few threads about clamping a carbon bike by the top tube, and it seems to have a lot of support. Get 15% Off Membership → THE CARBON FRAME CLAMP WILL CHANGE THE WAY YOU WORK ON YOUR BICYCLE. Using grooved, rubber wheels and secure rubber bindings, their Carbon Frame Clamp is designed to hold a bicycle frame securely without damaging it by spreading the pressure across multiple contact points. That’s because the teeth and valleys on the rear AXS road cogs are designed to mate with the larger rollers in the Flattop chain. Create a personalized feed and bookmark your favorites. I’ve assembled hundreds of Italian and American lugged steel bikes with braze-on fittings for front derailleurs over the years — never had the “beer-can” effect happen. 95. Personal ID for long-distance cyclists - fits on your wrist and weighs nothing. And workstands from all the top tube ( edit: of a carbon frame clamp will the..., did they have to swap derailleurs too possible to do this interchange is a harder. 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