PRODUCT The yellow line on the paddle should be between the two yellow arrows. It was in many ways an innovative design, and managed to avoid infringing on Sturmey-Archer's patents, but it had problems. 0000004393 00000 n You could not single-handedly going gone ebook deposit or library or borrowing from your associates to admittance them. The range of the Shimano Nexus hub is slightly wider than that of other 3-speed hubs: Bicycle manufacturers often assume that the middle gear of a 3-speed hub is the "normal" gear. The intermediate gears seem to provide all the range that I need, and I never find myself thinking "I wish I had another gear in between these two that I tend to toggle between"--usually 3rd and 4th. We use cookies to ensure that we give you the best experience on our website. The dropouts of an older three-speed bicycle will need to be widened to fit these hubs. During the Thanksgiving break, I made my first visit to the Bicycle Exchange (hallowed be its memory) in Cambridge, Massachusetts, returning with a Raleigh-pattern rim and 40 spokes to lace to a Sturmey-Archer AW hub which I had salvaged from a trash pile. THIS WEBSITE USES COOKIES TO IMPROVE YOUR USER EXPERIENCE. The cassette joint fixing ring is installed so the yellow dots line up. Singletracks Merch | I don't know what you've decided, but if you are still weighing options the Shimano 5e manual has a chart showing the e-bike 5 speed ratio vs the 8-speed. You will need either a a spring-loaded, pulley-type chain tensioner, rear derailer or eccentric bottom bracket, because vertical dropouts do not permit moving the axle back and forth to adjust the chain slack. Looks like this right now (no mounting hardware, cog or shift mechanism.). The Nexus 3-speed bellcrank is aligned in second gear. Electrical shifters work with drop bars or flat bars. SHIMANO SERVICE CENTER See this document describing differences. After re-installing the cog, it is a good idea to seat the circlip . An example of data being processed may be a unique identifier stored in a cookie. 0000006205 00000 n https://www.sturmey-archer.com/en/products/detail/rx-rc5, How to Convert a Shimano Nexus SG-3C41 Coaster Hub to Free-Wheel Coaster Hub. Adjustment is made with the shifter in 4th gear for the 4, 7- and 8-speed hubs, 6th gear for the 11-speed hub. SHIMANO CODE NO. With the 8-speed, however, the marks you need to line up are yellow, not red. 0000056509 00000 n 0000000016 00000 n SHIMANO NEXUS Internal Geared Hub Disc Brake 3-speed VIEW PRODUCT. The rotor diameter is 180mm, not the usual 185mm, raising issues of compatibility with non-Shimano caliper assemblies. The axle flats and washer tab are not in line with each other, as with Sturmey-Archer and Sachs/SRAM hubs, and so you may have to file the dropout slots of an older bicycle to fit a Nexus hub. Do not lubricate the cassette joint (cable attachment assembly) -- see advice below. Hold the left hand cone, and then remove the lock nut for left hand cone. Instructions for the 8-speed hub are very similar and begin. Sprocket and sprocket circlip are installed before the cassette joint parts. 4. Install it if necessary. Average star voting: 5 ( 27446 reviews) Product information Technical Details Additional Information Feedback Would you like to tell us about a lower price? Installation instructions for this hub. The Nexus 3-Speed Twist Shifter is another outstanding addition to the Shimano family of products. I suppose that could be called a blessing in disguise. This is especially the case if a hub has a coaster brake, due to the heat this brake generates. The AW hub never gave me any trouble,. > It does the job, but will not lock the wheel up. 0000056270 00000 n Torque on the axle from the gear train is relatively low, and so the bellcrank-shifting hubs use only one non-turn washer, at the left side. %%EOF Japanese cyclists were (and still are) lighter, on average, than Americans. We and our partners use data for Personalised ads and content, ad and content measurement, audience insights and product development. Looking for specific info? They fudge a bit, lowering the gears in order to keep the top gear from being completely useless, but then the middle gear is too low for level-ground riding. In some cases, it is possible to convert an existing bicycle to the use of a Nexus hub. The labels are corrected in the image below.). Place the motor unit over the end of the axle so that marks on it line up with marks on a spacer inboard of locknut B, as shown in the image below. You need to select washers for your particular frame. Major Western European countries hit stage 6 in the late '70s, just as Japan was moving into stage 3. The current (2017) generation of Shimano 3-speed internal-gear hubs is available with a coaster brake or with an optional external Rollerbrake or disc brake. The cartridge-type mechanism may fit into an older shell, though. 3. However, while it is lighter than other quality geared hubs, it still adds a bit of weight to the wheel. Note: Do not damage the threads of the hub axle. The Alfine 11-speed is oil-lubricated, but the other Nexus and Alfine hubs are packed with a special grease as sold. #13 and #14 spoke compatible; FIND A DEALER. They love that stuff. Manage Settings SG-3R75-B. The coaster brake is also not as powerful those found on a single-speed hub. PRODUCT On the right side of the hub, just outboard of the sprocket, there is the "cassette joint pulley" which the cable turns as the gears are changed. Alfine is a high-end product line with 8 and 11-speed hubs. Free Shipping on All Orders, NEXUS 3 SPEED COASTER HUB PARTS SHIMANO SG-3C41. Next to this is the "cassette joint bracket" which is stationary. Cassette joint parts are the same for the 4- and 7-speed hubs; different for the 5 and 8-speed hubs; different again for the 11-speed hubs. You need two tools: an open end 10 mm wrench and you may also need a pair of pliers. This is the first video in a series of gravel bike upgrades to the Retrospec Harper Coaster single speed bike. Stage 3: [insert name here]'s improved product quality is noticed, [insert name here]'s reputation rises. startxref When a Sturmey-Archer hub gives problems, it can almost always be repaired, usually without needing any parts replacement. The smaller-diameter side faces inward. Newer, similar models are the F, FA and G type and the cartridge type, which had a pressed-in right-side ball cup instead of a threaded ball cup. 0000001646 00000 n It is usually possible to spread the rear triangle of a steel (Cromoly) frame to the needed width. The Nexus 3-speed bellcrank is aligned in second gear. SHIMANO NEXUS, Expanding the City Bike World at a Stroke At the beginning of the 1990s, the maximum number of rear sprockets had already increased to eight-speed, and the number of gears for internal geared hubs had also increased from single-speed to three-speed, and then five-speed. The coaster brake is only suitable for flatland use: it will overheat on long downhill runs, like any coaster brake. Shop for Shimano Nexus 3 Speed at Walmart.com. Torque on the axle from the gear train is relatively low, and so the bellcrank-shifting hubs use only one non-turn washer, at the left side. Turn it clockwise to lock it. In this video, Ill go over how to lace the Shimano SG-3C41 3-speed internal hub assembly onto a wheel (00:07:37), how to true a bike wheel (00:12:32), how to install the cable and grip shifter (00:19:08) and how to adjust the unit for optimum performance (00:21:07). With a reliable, internal 3-speed mechanism, the SHIMANO NEXUS SG-3C41 hub has an integral coaster brake. Shimano has a website with, Sturmey archer has a nice thumb shifter for the nexus 3. (Note: in at least one dealer manual, DM-S7051-02-ENG-1.pdf, labels for inner and outer locknuts are switched.) 0000103562 00000 n I have also owned and used 7 speeds and 8 speeds. Got this Nexus 3 speed with Alex Xrims 303 front and rear aluminum wheels. Any good bicycle mechanic will be able to do this, or you can do it yourself. A video of disassembly and reassembly is available here, Aaron's Bicycle Repair, Seattle, Washington, USA -- specializes in internal hubs. The photos below show the steps in installation of the cassette joint on an 8-speed hub. Cycling Equipment; Bicycle Tires, Tubes & Wheels; Older bicycles are typically narrower than that. My bike is far to the left on the power and torque scale. Widgets, Explore I dont know what youve decided, but if you are still weighing options the Shimano 5e manual has a chart showing the e-bike 5 speed ratio vs the 8-speed. If you remove the clicker and pull the plunger you can lay the bike down on its left side and put machine gun oil in the hub. Just lined up 2nd gear and away she went, shifting faster, crisper and better than the Nexus twist shifter. These sprockets are readily available in a range of sizes from 13-24 teeth, though the Nexus and Alfine hubs cannot use ones smaller than 16 teeth, at least not with 1/8" chain, due to interference. The diameter of the hub was smaller, and so stresses on the internal parts were higher. When an older Shimano 3-speed hub fails, it is most often because one of the under-engineered pawls has shattered. associate to purchase and make bargains to download and install shimano nexus 7 correspondingly simple! Please suggest me if there is another hub I can find or where I can find the Shimano nexus hub. Copyright 2012-2022 EBR Electric Bike Review, Inc. Also operating under the name EBR. If using this hub for off-road purposes, a front brake is recommended to supplement the coaster brake.