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). 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. Ideally, the frame should have a dropout spacing of 127 to 135 mm to fit one of the Nexus hubs. Whenever India gets ready to move up, it is expected to be a very important player. Several brands of adapters for common 6-bolt rotors are available. This book also is out of print, but copies are available used at a reasonable price. I suppose that could be called a blessing in disguise. I have also owned and used 7 speeds and 8 speeds. Looks like this right now (no mounting hardware, cog or shift mechanism.). 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. Although this may not be the most affordable internal gear hub, it is very reliable, durable, and has an excellent gearing ratio. You need to select washers for your particular frame. Nexus 3, 4, 7- and 8-speed internal gear systems may incorporate all-weather braking systems. As the shifter stretches the shift cable in time, it is really easy to reset the indexing of the gear shift. Other versions include coaster, roller or disk brake. Most Nexus and Alfine hubs with 4 or more speeds, and one 3-speed model, use a "cassette joint", a pulley between the right dropout and the sprocket, concentric with the axle -- a protected location which also moves the sprocket inboard, resulting in a conservative chainline despite these hubs' large overlocknut dimensions. To replenish oil between rebuilds, you must either unscrew the left bearing cone (which requires removing the wheel from the bicycle) or else add an oiling port, such as a Sturmey-Archer oil cap. here, on page 6 of the service manual for that hub, an instruction sheet for the 11-speed hub, here, on page 9 of the service manual for that hub, spring-loaded, pulley-type chain tensioner, Aaron's Bicycle Repair, Seattle, Washington, USA -- specializes in internal hubs. PRODUCT SPECIFICATIONS. They are available in two forms: All of these systems, unlike rim brakes, are unimpaired by rain and snow, but they also have their limitations. It could be that you have a kink or rough spot in your shift cable housing. 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. Sometimes it happens that wheels are sold without a cog, dust cover, ring, or any mounting parts. Because the shifter mechanism is between the right-side dropout and the sprocket, the chainline is desirably narrow in spite of the large overlocknut spacing of these hubs. It depends where it was bought, but usually you get the cog and dust cover. (The Columbia's original rim had 36 spokes). Shimano Nexus Inter 3 hub laced with spokes and mounted on a bicycle. Stage 4: [insert name here]'s high wages and shifting exchange rates begin to erode the competitive pricing advantage formerly enjoyed. See anti-rotation washer chart. The 5-speed is covered in the Nexus dealer's manual, linked below. Remove the hub shell. This 7-speed internal gear hub from Shimano is an excellent . There are also articles on this site more generally about. 0000008805 00000 n
Manage Settings Support Us | If there is physical damage inside the hub, it usually takes the form of corners' getting rounded off of mating parts, causing the shift adjustment to become a bit more critical. Im planning to purchase it and install it on my fixie, as I live on hilly area of Syracuse. https://www.diwhy.life/retrospec-harper-bike-review/, Skateboard Deck Made From Composite Decking, Giddy Up! 0000005727 00000 n
A Shimano Rollerbrake is lubricated without any disassembly, using the special Nexus brake grease -- there's a small rubber access plug on the side of the brake unit, just pop off the plug, put the nozzle of the grease tube up against it, and squeeze. They also have 7-speed and 3-speed options. Alfine is a high-end product line with 8 and 11-speed hubs. Terms | Privacy, Where to buy Shimano Nexus Inter-3 (3-speed). Most other Nexus hubs are similar to the ones described. If there is no Rollerbrake installed, the overlocknut spacing can be smaller, down to about 124 mm, using a thinner locknut. UM User's Manual SI Service Instructions EV Exploded View QM Quick Manual SM Service Manual Currently available manuals and technical documents from Shimano are posted on this site. Install it if necessary. A 3-speed hub will work better for you if you change the sprocket or chainwheel to lower all the gears, so you use the top gear on level terrain. You need two tools: an open end 10 mm wrench and you may also need a pair of pliers. Glenn's New Complete Bicycle Manual also has rebuilding information. 6 33
With any of these brakes, a front brake also should be installed -- see my article about braking and turning. 0000001646 00000 n
Stage 6: [Insert name here] can no longer manufacture bicycle parts at a competitive price, more and more manufacturing for export is shifted to [Other Developing Country]. However, while it is lighter than other quality geared hubs, it still adds a bit of weight to the wheel. 0000008006 00000 n
By the late 1970s, Shimano had started making very good products, and since then it has become the world's leading bicycle parts maker. Singletracks Merch | This means the bike will stay in lower, easier pedaling gears longer as the bike picks up speed. With a reliable, internal 3-speed mechanism, the SHIMANO NEXUS SG-3C41 hub has an integral coaster brake. Cycling Equipment; Bicycle Tires, Tubes & Wheels; The page covering the 11-speed gives more detail about lubrication. My review: The legend for the drawing in the manual reads: (A) Right-hand lock nut B After re-installing the sprocket, it is a good idea to seat the circlip by going around it and tapping with a hammer and punch. Shimano sells cable-operated shifters for these hubs only for flat handlebars, but aftermarket (JTek, Microshift) shifters and a Hubbub adapter are available to fit drop bars. The dropouts of an older three-speed bicycle will need to be widened to fit these hubs. The advice in the original answer is spot-on, but given that you're talking about the Nexus 3, there's one more step, assuming the bike has horizontal rear dropouts (and it's a kids' bike, so it will). When an older Shimano 3-speed hub fails, it is most often because one of the under-engineered pawls has shattered. The low and middle gears are then better for acceleration and climbing, too. The ring clips come in rounded or squared spring wire, either will work. The fixing ring turns clockwise to lock, same as with the others. Metal wear particles contaminate the grease, and so the hubs require periodic cleaning and replenishment of a special grease that does not make the pawls stick. We and our partners use data for Personalised ads and content, ad and content measurement, audience insights and product development. startxref
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NEW zigmaverse.com, US $39.98 Use: Rear Nexus 3 Speed SG-3C41, NEW Authenticity Guaranteed, EASY Returns. Nexus and Alfine 8-speed hubs are nearly identical internally. 0000085256 00000 n
> 18 Inch Alloy Wheels for sale, new Microshift BS-N08 8 Speed Bar End Shifter for Shimano Alfine or Nexus Hub Gear of practicalcycles company from China. Install the ball retainer P (3/16"X13). We use cookies to ensure that we give you the best experience on our website. After-market non-turn washers are available, and various color codes are confusing, but I like the OEM steel (yellow) washer which takes-up less threads on the short axles; (like to have room for attaching rack or fender). Stage 5: Increasing quality and pricing make [insert name here]'s products un-competitive with lower-wage developing [Other Developing Country]'s output. A bike is freedom. The Rollerbrake is a separate module, and when you buy the hub it is not even installed. The 11-speed is oil-lubricated. HOME De Kampioen 2006-05 De Kampioen is the magazine of The Royal Dutch Touring Club ANWB in The Netherlands. The cartridge design made it easier to replace the entire internal mechanism at once -- the usual repair. Use a flat tipped screwdriver such as the SD-3 to turn the dial. The shifter, cable, and "cow bell" parts can also come in a kit, and sometimes I have opted for the integral shifter. It's published 10 times a year with a circulation of approximately 3,5 million copies. There should be a rubber sealing ring just inside the indentation in the inner face of the motor unit. About Us | Coaster Brake. Both the pulley and the bracket have index marks, and gear adjustment is correct when the marks on the two parts align with the shifter in 4th gear (6th gear on the 11-speed). https://www.ebay.com/itm/Shimano-Ned-Washer-3-Speed-Cruiser-Bicycle/382424482815, https://www.ebay.com/itm/Shimano-Nexus-3-Speed-Grip-Shift-Cable-Kit-New/264570085944, https://www.ebay.com/itm/BICYCLE-INS-SL-3S35E-BEACH-CRUISER-CHOPPER/391232454189, The middle of the Upper Peninsula of Michigan, retrieve your The cable engages the pulley at the top instead of the bottom with these hubs, and the cassette joint looks like the one in the picture below. This is the first video in a series of gravel bike upgrades to the Retrospec Harper Coaster single speed bike. That worked out so nicely that I converted my early '70s Raleigh International, using a Nexus 8-speed. I've had no reason to disassemble, clean and re-lube the gear set within the hub as the miles I have on the bike do not merit that kind of service, yet. 9 mm) 4 Y33R90700 Carrier Unit 5 Y33R90800 Ring Gear Unit #1 out of 0 Brand: Shimano I Have One! Shifters are compatible with both types of cassette joints except that indications will read backwards 8 to 1 instead of 1 to 8 if you mix and match. 0000101942 00000 n
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The yellow line on the paddle should be between the two yellow arrows. NEXUS INTER3 0000032359 00000 n
> - First gear isn't low enough, especially without a granny-gear chainring. Wheel Set - Comes with both front and rear wheel. . Stage 1: Underdeveloped country of [insert name here] uses cheap labor to make cheap, low-end products. 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. Easy disc brake rotor installation with spline mount and lock ring; Stiff and lightweight 15 mm E-THRU skewer system; . For on-road (cruiser) bikes, this hub is nearly perfect, as weight & stopping considerations are a lot less pressing. Comfy Bike Seat Unboxing & Review. Installation of this hub is already complicated enough! (B) Right-hand lock nut A This is an very . The diameter of the hub was smaller, and so stresses on the internal parts were higher. SG-3C41. 0000006787 00000 n