I can do this in 5 minutes on one of my bikes, but when the tt bars are on, there are spacers above the stem due to different riding position. } } Continue driving the nut until the driver meets the outer portion of the tool. $(".seatPostElement").on("mouseout", function(){ If you can't find a 1 inch plug, then gluing a tee nut into the steerer may be your only choice. bikeDateRun++; Cookie Policy - Carbon steerer tube= compression bung for carbon. I recently purchased a Zipp 145 stem and noticed that it also came with a very cool Zipp top cap. It's never a good idea to hammer a sharp metal object into a carbon steerer. Press question mark to learn the rest of the keyboard shortcuts. When bikes are assembled, a stem preload bolt (to preload the bearings) and an expander / compression plug (the other part of the bearing preload system as well as used to clamp the stems binder / pinch bolts against) are used as the interface between the handlebars and the bicycle frame. Thats a pretty interesting document from Cannondale. window.renderBadge = function() { $(".cart-item-detail-proditemnum").each(function(){ } loadSeatpost(null); Something went wrong. (In my opinion, the best is from Cervelo.). Which website would you like to use? It is not necessary to completely remove the old nut. All it needs to do is resist pulling out when you screw in the bolt to set bearing preload. Compression plug will work, but you can also make your own starnut tool: I have never owned a star nut tool and I have installed many of them safely. if($(this).html().indexOf("BI") != -1){ bikePresent = true; } Engage so most of the stem sticks up above the column. }, 500); function clearBikeDates(){ Order a couple of different ones and return the one that you don't use. if($(".order-confirmation-header").length > 0){ } This system is especially popular with the carbon steering columns. if($(".container-account").length > 0){ }); Terms of Service - Subscribe and receive a 15% off one-full priced item on your next order. $(".container-default").css("padding-top", "0px"); Some large and/or heavy items are subject to additional oversize charges that are separate from standard shipping costs. slidesToScroll: 1, Mount the nut with concave side toward tool thread. } The bolt is threaded into the star fangled nut which be fitted into the inside of the fork column. } It can also help maintain alignment to use the stem as an alignment guide. $("#covid-messaging").slick({ else if($(".product-name h1").html() == "Jenson USA Gift Card") This offer is only available to physical shipping addresses in the 48 continental United States (no PO Boxes), and some exclusions apply. } http://www.chainreactioncycles.com/Models.aspx?ModelID=75533, http://www.youtube.com/user/MrDelcol#play/uploads, http://www.youtube.com/user/topasassin#play/uploads, http://www.chainreactioncycles.com/Models.aspx?ModelID=41053. Discuss light weight issues concerning road bikes & parts. Either. const urlParams = new URLSearchParams(window.location.search); I've seen plenty of things that shouldn't have been done Cannondale uses a starnut. Advertising - [CDATA[ Most headset come with something or most bikes already have something fitted so use them. Please try again in a few hours.

"); Orange Seal, does it live up to it's fame. } Please note this offer is only available to physical shipping addresses in the 48 continental United States (no PO Boxes), and oversize charges still apply on some heavy/large items. if(letter == null){ I've not had a single problem with them, when using them for XC use. For sale - Pictures are mandatory 22-3-13, http://www.cornercycle.com/custom_carbo insert.htm, http://www.cannondale.com/asset/iu_file ote_en.pdf. $("#closeForm").click(function(){ PARK TOOL and the color BLUE are registered trademarks of Park Tool Co. All other referenced trademarks and trademark registrations are the property of their respective owners. // 0){ document.body.appendChild(ratingBadgeContainer); if($(".store-pickup-opts").length > 0){ // Hide estimated delivery date for(var i = 0; i , // 0){ And that huge Colnago plug just about negates any weight advantage of a carbon steerer vs. alloy. Use 3mm hex wrench in end of screw, and thread into body, leaving about 10 threads exposed. For a better experience, please enable JavaScript in your browser before proceeding. dots: false, $.fancybox.close(); }); I like mine. Another is that at my age, 52, I am currently very limber and can use most of my bikes with the stem with little or few spacers below. Basically, when manufacturers machine the stems, some leave a small burr all around the inside of the stem which can result in an excessive concentrated pressure on the carbon steerer tube, i.e., stress rider. Sorry, didn't mean to imply they had no use, just only a relevant use! } $("#closeWinDone").click(function(){ A forum for folks with questions about bicycle repair. $(".store-pickup-opts").after("
NOTE: In-Store Pickup is available at the Riverside Will-Call location only. The bike build process typically takes 2-3 days to complete depending on the bike model and the complexity of the build. Plus, if you decide you need to cut the fork again, you don't have to reset the nut or reinstall a new one. $(function(){ I've been running head doctors for 5 years, they came with hope headsets. } }); The top cap looks like it will only fit a star nut assembly. null, "json"); } } $("#seatPostGraphic").attr("src", "https://www.jensonusa.com/globalassets/product-page-assets/SEATPOST-GEO.jpg"); The star-nut is basically designed not to be removable. If you Buy It Now, you'll only be purchasing this item. On the Competitive Cyclist site, in the copy for the Problem Solvers headset compression plug, it says: "As you know, you don't pound a star nut into a carbon steerer, rather you use what's known as a compression plug to hold the fork in the frame.". } LC_API.open_chat_window(); I've got 3 in service across my fleet- one is in a carbon steerer (Whisky #7), the 2nd in an aluminum steerer (Manitou Mezzer) and the last one is in a steel fork (Surly Ogre). $.fancybox("#customBikeMessaging", { autoSize: true, maxWidth: 600, minHeight: 700 }); } My understanding is on a carbon steerer a compression plug is REQUIRED. They have a full carbon steerer but use an aluminum sleeve inside the top of the steerer that has a pre-installed star nut, so you can use whatever top cap you'd like. When you keep surfing on this site you agree with the cookie usage. $(".slick-prev").css("display", "none"); if($(".product-name h1").html() == "JensonUSA Gift Card"){ The TNS-1 and TNS-4 use a replaceable (6mm x 1mm) setscrew, part #822. $(".bike-alert").remove(); window.gapi.ratingbadge.render(ratingBadgeContainer, {"merchant_id": 17229, "position": "BOTTOM_LEFT"}); For me, it's not worth it (not the cost, the weight loss). I wouldn't imagine so, other than a few extra grams, but thought it'd be worth asking. }); loadSeatpost($(this).attr("id")); All rights reserved. More often than not, an incorrect expander plug is used, which, when (over) tightening the stems pinch bolts can cause cracking of the carbon forks carbon steerer tube (more on this later see photos below). The fixes? It wouldn't expand enough to fit the aluminum one. Another option for threadless headsets is the expansion plug system. }); My two options are to use a 1" compression plug or a start nut, but I need some advice. It depends on the compression plug. } }); var c = ca[i]; $(".slick-next").css("display", "none"); This is a private listing and your identity will not be disclosed to anyone except the seller. It should be fine. Every six months, remove the stem and fully inspect the entire fork. Use a small amount of removable thread locking compound on the threads of the new screw. Please select more than 2 or more bikes for comparison, Wolf Tooth Compression Plug with Integrated Spacer Stem Cap. Place the TNS-4 over the top of the steering column. I'm going to check and see if they still have them. PLEASE NOTE: //$("a.button-default:contains('Guest Checkout')").hide(); The Carrera Hardtail combined thread - come on all you Carrera's. But I wanted a long one so I ordered a couple different ones from Amazon and eBay just to compare. Bike: $.trim($(".product-name h1:first").text()), There are various reasons for spacers above the stem. After Sunday I have replaced my Hope expander with the simple starnut, make sure you get the starnut seated correctly i.e straight. } if (c.indexOf(name) == 0) { Once we are done building your bike, we will process the shipment. function getCookie(cname) { Hold tool aligned while striking TNS. $("#closeWinDone").show(); I do have a spare compression plug from my road bike -- any issues using a 35mm x 1 1/8" compression plug instead of a star nut in an alloy MTB fork? I seem to recall that I bought one from ti cycles ebay store for like $12. I sure am glad that my new fork has an aluminum steerer tube. speed: 300, } The TNS places the nut about 15mm (9/16) below the top of the steering column. It's never a good idea to hammer a sharp metal object into a carbon steerer. Strike the top of the TNS-4 with a hammer to drive in the star-nut. This allows the flanges to bite into the fork walls and hold it tight. Only up to three bikes can be compared at once. Like the ones made by Exotic (CarbonCycles). var bikeDateRun = 0; Refresh your browser window to try again. Phone: $.trim($("#customBikePhone").val()), Do not tighten any upper pinch bolt. Oversize Charges The TNS-4 is designed to help guide the starnut straight as it is pressed into the inside of the steering column. return ""; We're using cookies in case to provide best-possible user experience. Use the correct expander plug. The Colnago expander plug feels heavier than it is: 55 gms. Privacy Statement - var giftAmount = window.location.href.substr(window.location.href.indexOf("JensonUSA-Gift-Card-") + 20); The convex surface will face outward of the tool, and face the steering column. Thank you for signing up for email specials! } There is a cone at the top and bottom, and a hollow bolt passes through the sleeve. Bike Star Nut Bicycle Bike Headset Compression Plug Expander Stem Top Cap. } Put flowers in there. One is that you can have one bike set up to quick change between road bars and tt bars with cable quick releases. Colnago made it that way to offset stem clamping forces. I'd either buy a star nut for $1.50 and hammer it in or pay your LBS a visit. As this expansion bolt is tightened, it draws together the two cones and this expands the sleeve. I use them on all my bikes, both carbon and metal steerers. For certain parts stiffer is more important than lighter. slidesToShow: 1, // bike customization modal $(".delivery-cost:contains('FREE')").siblings(".delivery-date").html("Standard (3-5 business days)"); if(window.innerWidth < 600){ $(function() { } if($("#seatPostGraphic").length > 0){ $("body").prepend("
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"); $("body > main > div > div.grey-block.order-details > div > div > span:nth-child(4)").remove(); I have an older 1" (25.4mm) carbon fork from Nashbar. Hokolite Lux-Bike 1500 Lumen Bicycle Light Review, Skratch Hydration Mix, Energy Chew and Bar Review, All Exercise is Good, and Vigorous Exercise is Better. Token makes some substitutes but they come out to around 38 gms. Contact Us - These insert inside the steering column and then expand and jam against the inside walls. Star Fangled Nut and Expansion Plug Installation. //$("#register-form").html("

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PLEASE NOTE: The bike build process currently takes 5-7 business days. Use of this site indicates your consent to the Terms of Use. Install stem onto column. 8 speed chain and 8 speed chainrings on 9 speed triple cranks? } Install top cap and headset adjusting bolt into expansion plug hollow bolt. - eBay Money Back Guarantee - opens in a new window or tab, cleared payment - opens in a new window or tab, - for PayPal Credit, opens in a new window or tab, Learn more about earning points with eBay Mastercard, - eBay Return policy - opens in a new tab or window, - eBay Money Back Guarantee - opens in a new tab or window. Prepping the stem by sanding & polishing the inside removing all burrs & stress risers (see photos below). Tried this, it doesn't work. We use cookies on our websites for a number of purposes, including analytics and performance, functionality and advertising. else{ You don't need to take it out to change things unless you cut the steerer down, in which case you can just knock it in a bit further. $("#priceMatchContainer #comments").removeAttr("id"); // IPI comments fix Find an appropriate compression/expander plug or epoxy in a threaded aluminum insert. {"modules":["unloadOptimization","bandwidthDetection"],"unloadOptimization":{"browsers":{"Firefox":true,"Chrome":true}},"bandwidthDetection":{"url":"https://ir.ebaystatic.com/cr/v/c1/thirtysevens.jpg","maxViews":4,"imgSize":37,"expiry":300000,"timeout":250}}, Recent sales price provided by the seller, Add to cart to save with this special offer. Threadless headsets are adjusted by pressure on the top bearing race. $("#responseLine").show(); function loadSeatpost(letter){ We Price Match | See Details, Take an EXTRA 10% OFF | Use code EXTRA10 | SHOP NOW. This technique works ONLY if you use the newer longer TNS models. All bikes are built, tested, tuned, and ready to ride upon shipment. // ]]> $("#mainForm").hide(); Archive - setTimeout(function(){ Getting a new fork in the mail in the next few days & realized I don't have a star nut / tool for installation. cannondales use a starnut in their carbon forks. }, 500); }); As far as hammering it goes, popular methods including sticking a screwdriver through it and hammering the screwdriver. If it is necessary to install another nut, simply use a punch and drive the first nut down until deeper than the new nut will sit. if($('.cart-item-list').length > 0 && bikeDateRun < 5){ Appraisals. like mentioned above starnuts are cheaper and less hassle.. Expander= cost more, weigh more, do same job. Along with the causes above, most stems are not properly prepped for assembly. setInterval(function(){ Orders that include special-order orbackordered items may be subject to shipping delays depending on product availability. It came with the star nut, but I was wondering if a compression plug would be any more/less better. 1" compatible compression plugs are available but I agree - they are most likely scarce. I have also seen star nut expander plugs used on carbon steerers . Get free shipping, on most items, with your $50 purchase today! In the NYC area where prices are generally higher than most my LBS charges $5 for a star nut install. variableWidth: true var name = cname + "="; Only issue I can think of is that the wall thickness is smaller on non-carbon tubes, so the inner diameter may be too large for the compression plug to handle. window.location = "/Jenson-USA-Gift-Card?amt=" + giftAmount; It's worked every time I've done it. It is also possible to drive the old nut completely through the column and out the bottom. Find an appropriate compression/expander plug or epoxy in a threaded aluminum insert. Cannondale says starnuts are fine with their forks and you can use a regular top cap and screw and the weight is probably less than the epoxy solution. } infinite: true, } View cart for details. Copyright 2021 MH Sub I, LLC dba Internet Brands. Get free Standard Shipping with your $50 purchase today! Your email address will not be published. I read that compression plugs are the best type for carbon. if($("#shopping-cart-container").length > 0){ //$("#paypal-button-container1").hide(); if(getCookie("IsKiosk") && $("body > header > div.header-top.clearfix > div > div > div.dropdown.header-account-menu-container.hidden-xs > ul > li:nth-child(1) > a").html() =="Sign out"){



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