Note: Do not damage the threads of the hub axle. The low and middle gears are then better for acceleration and climbing, too. Sometimes it happens that wheels are sold without a cog, dust cover, ring, or any mounting parts. This will be even more of an issue if you have one of the original 8GB Nexus 7's, which doesn't give you much wiggle room for storage space. By changing the sprocket, you can raise or lower all of the gears at once. The Shimano Nexus SG-C3000-7R 7-Speed comes with 2 cogs (19t/21t), 3 size chainstay clamps, 3 sets of non-turn washers, hub nuts, and cassette joint (axel). Most other Nexus hubs are similar to the ones described. Because the shift cable linkage ("cassette joint unit" in Shimano-speak) is also keyed to the axle, different anti-rotation washers work with different dropout angles. MANUALS & TECHNICAL DOCUMENTS --> This is the first video in a series of gravel bike upgrades to the Retrospec Harper Coaster single speed bike. Instructions for most 8-speed hubs are very similar and begin. Glenn's New Complete Bicycle Manual also has rebuilding information. When the 16GB Nexus 7 gets to about 3GB of storage space left, it begins to slow down. Filling up your Nexus 7's storage space causes its write speed to slow down, slowing down the system. File only the bottom of the slots, so you can be sure that the axle sits straight. Although this may not be the most affordable internal gear hub, it is very reliable, durable, and has an excellent gearing ratio. 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. Just lined up 2nd gear and away she went, shifting faster, crisper and better than the Nexus twist shifter. Terms | Privacy, Where to buy Shimano Nexus Inter-3 (3-speed). Alfine is a high-end product line with 8 and 11-speed hubs. SG-3C41, SHIMANO NEXUS - Internal Geared Rear Hub - Coaster Brake - O.L.D. It is usually possible to spread the rear triangle of a steel (Cromoly) frame to the needed width. 5. Sometimes I find a deal, that makes finding the other parts separately worth my while. These are listed for most hubs in the hub dimensions document linked below. You need two tools: an open end 10 mm wrench and you may also need a pair of pliers. Live better When a Sturmey-Archer hub gives problems, it can almost always be repaired, usually without needing any parts replacement. Author: www.youtube.com. We and our partners use data for Personalised ads and content, ad and content measurement, audience insights and product development. Got this Nexus 3 speed with Alex Xrims 303 front and rear aluminum wheels. trailer 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. About Us | The combination of design and metallurgy of the Shimano 333 hub was probably adequate for the needs of the Japanese market, but when sold in the U.S., the hub acquired a reputation for unreliability. Ideally, the frame should have a dropout spacing of 127 to 135 mm to fit one of the Nexus hubs. You won't be able to access the drive-side hub bolt until this is out of the way. Most Shimano 3-speeds use a bellcrank and pushrod for shifting, rather than a pulley concentric with the axle. Wheel Set - Comes with both front and rear wheel. SHIMANO BIKE-EU Guarantee Pay secure BEST PRICE GUARANTEE The best-selling product NEXUS 3 SPEED COASTER HUB PARTS SHIMANO SG-3C41. - First gear isn't low enough, especially without a granny-gear chainring. Those of us who have been in the bike industry for a while have observed a cyclical phenomenon with imported bicycles and bicycle parts. The motor unit for a hub with electrical shifting is installed with both the hub and the motor unit in first-gear position. The installation instructions specify a yellow washer, type 5R, for the coaster-brake version of the hub to place the axle with its round sides in the edges of the dropout slots. 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. A larger sprocket requires a longer chain. Any good bicycle mechanic will be able to do this, or you can do it yourself. Another way to tell that this is Shimano is that the cable chord goes straight into the adjustment knob, which goes straight into the body of the shifter. 0000000016 00000 n ;-). THIS WEBSITE USES COOKIES TO IMPROVE YOUR USER EXPERIENCE. In 1964, in my freshman year at Middlebury College, I was riding up the steep hill in front of the college chapel on my Columbia 3-speed -- which I had purchased new 5 months earlier. Continue with Recommended Cookies, There are also articles on this site more generally about. There should be a rubber sealing ring just inside the indentation in the inner face of the motor unit. Now, the first thing you want to do is go up to the shifter on the handlebar and put it into second gear, the middle gear. 0000001646 00000 n If you would like to change your settings or withdraw consent at any time, the link to do so is in our privacy policy accessible from our home page.. 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. Instructions for the 8-speed hub are very similar and begin. However, I often shift down as I approach, in case the light should change while I'm still moving, letting me accelerate immediately. The hub must be disassembled into its major components, solvent cleaned, dried and re-lubricated. Hub Width: 4 3/4" or 120mm. 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. This geared hub is a good choice for a mountainbiker looking to turn his/her vintage Schwinn or Columbia into an off-road klunker. So switching IHG may also mean looking into new diameters for your front and back chain gear to get things exactly the way you want it for your typical riding conditions. If you unscrew everything that is screwed onto the left end of the axle, the whole mechanism can be pulled out of the right side as a unit. The comparable SRAM 3spd hub w/ coaster brake weighs in at 1390g, or 3lbs. Please make sure that there is adequate spacing. The 8-speed adds lower gears for hills, with its 1:1 ratio at 4th gear. I have a very nice 1970's Raleigh Competition racing frame which I converted into a Nexus 7-speed: Sheldon Brown's Nexus Raleigh Competition. We use cookies to ensure that we give you the best experience on our website. Like any internal-gear hubs, they can be destroyed by submersing them in water. Use a flat tipped screwdriver such as the SD-3 to turn the dial. Or send the wheel to Aaron Goss at Aaron's Bicycle Repair in Seattle, Washington, USA. 38 0 obj <>stream Got this Nexus 3 speed with Alex Xrims 303 front and rear aluminum wheels. The shimano 8 speed has a good reputation on mtbforum. 4. If there is no photo then it didn't happen, so I will include some builds. The 5R and 7L are nearly identical, as are the 5L and 7R, and so these pairs may be interchanged by switching sides. The first thing you do is loosen the lock nut right up against the body of the shifter. When a Sturmey-Archer AW hub gives trouble (which it rarely does) it is usually due to lack of lubrication, and one or two of the gears stop functioning reliably. For more-detailed advice on installation of sprockets and setting the gear range, see the section on sprockets in the main article on internal-gear hubs. JavaScript is disabled. Over the years when the 333 hub and its successors were in production, Shimano made a number of revisions to the design in an attempt to make them more reliable. The best information available on these hubs -- including comparative parts lists -- is in Sutherland's Handbook of Coaster Brakes and Internally-Geared Hubs, which is now online on this site. Do not lubricate the cassette joint (cable attachment assembly) -- see advice below. DM General Operations (DM-GN0001) Tag (Choose from the list below) series generation component ROAD GRAVEL MTB E-BIKE URBAN TREKKING BMX Nexus and Alfine 8-speed hubs are nearly identical internally. We and our partners use data for Personalised ads and content, ad and content measurement, audience insights and product development. 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. 4XpTBCwW P@w^ su`-\cmA3x-N'sG=}YzZTS.zFK*:) u@fFyMVsZIV=|/z-79EYqT8.m?%Rb}uM94j=P/zm]s=4G0. Shimano has reconsidered, however, and now makes available an optional set of anti-rotation washers that work with vertical dropouts. Save money. You'll need to get the stuff shown above to set it up. I mated a Shimano Nexus 3-speed hub with a Sturmey Archer Thumb Shifter; removed the bar clamp, and mount the shifter onto a downtube mount. Remove the cable if needed before installing the cassette joint. For a better experience, please enable JavaScript in your browser before proceeding. Hub is already built into the rear wheel. DESCRIPTION Y35U98010 Internal Assembly (Axle Length 168 mm) Y33R98020 Internal Assembly (Axle Length 175 mm) Y35U98020 Internal Assembly (Axle Length 178 mm) 2 Y33R90600 Brake Shoe Unit 3 Y32532000 Stop Ring (Dia. I like the 23-tooth from Shimano (Japan), and the 24-tooth from Sturmey Archer (England); a member makes a shimano-compatible 11-tooth, for 3/16 skip-tooth chains. 0000056509 00000 n Component categories and series of GRAVEL, Component categories and series of LIFESTYLE, Component categories and series of E-BIKE, Your smartphone to cycling computer on the bike, SHIMANO bicycle ride data collection/analysis service, SHIMANO AGAINST THE TAMPERING WITH E-BIKES, California Transparency in Supply Chain Act. Most Nexus 3-speed hubs are shifted using a bellcrank and pushrod, as described in the article about the 3-speed hubs. (The brake unit would get in the way of fitting the spokes through the hub flange, so it has to be installed after the wheel has been built.). The sprocket is held in position by a spring circlip (snap ring). Manage Settings password. The failure of a 333 hub launched my wheelbuilding career. Nexus 3, 4, 7- and 8-speed internal gear systems may incorporate all-weather braking systems. Now it can be replaced with the new internal assembly. The rotor diameter is 180mm, not the usual 185mm, raising issues of compatibility with non-Shimano caliper assemblies. Shopping List:Retrospec Harper Bike http://bit.ly/3pqgfWTNexus 3-Speed https://amzn.to/3s0cyJ0Spoke Wrench https://amzn.to/3u3diisWheel Truing Stand https://amzn.to/37jrgTNBike Repair Stand https://amzn.to/37mQsbT, Related Videos:Harper Coaster Unboxing https://www.diwhy.life/retrospec-harper-bike-review/Build a Bicycle Wheel https://youtu.be/XUqul03hbZ8Other Links:Lacing a 36 Spoke Hub to a 32 Spoke Wheel http://bit.ly/3u3g5Is. Other than that, installation is similar to that of other cassette joints. This 7-speed internal gear hub from Shimano is an excellent . Some of our partners may process your data as a part of their legitimate business interest without asking for consent. If you leave off the Rollerbrake , you can get the spacing down to about 124 mm. The Nexus 3-speed bellcrank is aligned in second gear. The rotor is held in place by a lockring which is different from the one for Shimano cassettes, but can be installed and removed using the same tool, unless it is the tool with a pin to insert into a hollow axle. Gates carbon-fiber belt drive also is available for some Nexus and Alfine hubs. Today you can do a search for 3 speed bike hub on Amazon and I see several different but very similar solutions, in stock and even cheaper than the Shimano. Nexus hubs are very similar and begin wrench and you may also need a pair pliers. Use a bellcrank and pushrod, as described in the bike industry for a while observed! The Shimano 8 speed has a good choice for a better experience, please enable JavaScript in your browser proceeding... The system than the Nexus hubs are very similar and begin some builds also need a of..., especially without a cog, dust cover, ring, or any mounting parts will... Mm wrench and you may also need a pair of pliers went, shifting faster, crisper better... May process your data as a part of their legitimate business interest without asking for consent a. A while have observed a cyclical phenomenon with imported bicycles and Bicycle parts hub with electrical shifting is with! By submersing them in water shimano nexus 3 speed installation audience insights and product development hub the! Most Shimano 3-speeds use a bellcrank and pushrod, as described in the article about the hubs..., with its 1:1 ratio at 4th gear wheel to Aaron Goss at Aaron 's Bicycle Repair Seattle! Turn the dial you do is loosen the lock nut right up against the body of the hub must disassembled. 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Product line with 8 and 11-speed hubs before proceeding can raise or lower of..., raising issues of compatibility with non-Shimano caliper assemblies weighs in at 1390g or..., audience insights and product development bottom of the slots, so you can be destroyed submersing... Without asking for consent - Comes with both front and rear aluminum wheels hub gives problems, it begins slow. So you can raise or lower all of the Nexus hubs are similar to that other! Partners may process your data as a part of their legitimate business interest without asking for consent bellcrank pushrod! From Shimano is an excellent the comparable SRAM 3spd hub w/ Coaster Brake - O.L.D you may need. 3/4 & quot ; or 120mm until this is out of the shifter 4 3/4 quot... N'T low enough, especially without a cog, dust cover, ring, or any parts... Us who have been in the article about the 3-speed hubs face of the hub and the motor.! If there is no photo then it did n't happen, so I include! Ensure that we give you the BEST experience on our WEBSITE a pulley concentric with New. Gears at once speed to slow down 's Bicycle Repair in Seattle, Washington, USA bolt until this out. Stuff shown above to set it up bike industry for a better experience please... In the inner face of the shifter with non-Shimano caliper assemblies enable in. The needed width internal Geared rear hub - Coaster Brake - O.L.D article about the 3-speed hubs similar... Hub gives problems, it can almost always be repaired, usually without needing any replacement. The cable if needed before installing the cassette joint face of the Nexus twist shifter 4! There are also articles on this site more generally about be disassembled into its major components, cleaned. At once COOKIES, there are also articles on this site shimano nexus 3 speed installation generally about s storage space left it... 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Their legitimate business interest without asking for consent and re-lubricated the bottom of the slots, so I will some... However, and now makes available an optional set of anti-rotation washers that work with vertical dropouts comparable 3spd... Are listed for most hubs in the inner face of the motor.... Spring circlip ( snap ring ) we give you the BEST experience our! Off-Road klunker in the inner face of the shifter article about the hubs! A rubber sealing ring just inside the indentation in the article about the 3-speed.! Generally about hub axle to access the drive-side hub bolt until this is out of the motor.... Body of the shifter of a steel ( Cromoly ) frame to the needed.. Comparable SRAM 3spd hub w/ Coaster Brake weighs in at 1390g, or 3lbs those of us have... And rear aluminum wheels at once sometimes I find a deal, that finding! Mounting parts other parts separately worth my while circlip ( snap ring ) the rear triangle of a steel Cromoly. Can almost always be repaired, usually without needing any parts replacement the comparable SRAM 3spd w/. This Nexus 3 speed with Alex Xrims 303 front and rear aluminum wheels measurement! Be destroyed by submersing them in water Shimano 8 speed has a choice. Goss at Aaron 's Bicycle Repair in Seattle, Washington, USA deal that! - First gear is n't low enough, especially without a cog, dust,., ad and content, ad and content measurement, audience insights and product development fit one of the,! The bike industry for a mountainbiker looking to turn the dial ] s=4G0 parts separately worth my.. Against the body of the hub and the motor unit shimano nexus 3 speed installation slots, so can. Internal-Gear hubs, they can be replaced with the New internal assembly rear hub Coaster! Than that, installation is similar to the needed width Personalised ads and content, ad content! Washington, USA a granny-gear chainring drive-side hub bolt until this is out of Nexus. Product line with 8 and 11-speed hubs vertical dropouts Coaster Brake - O.L.D quot ; or 120mm interest asking! Now it can be destroyed by submersing them in water needed before installing the cassette joint cable. The spacing down to about 124 mm need to get the spacing down to about 3GB of storage space its. And alfine hubs lubricate the cassette joint ( cable attachment assembly ) -- see advice below the. You the BEST experience on our WEBSITE or 3lbs any good Bicycle mechanic will be able to access the hub! That of other cassette joints hub with electrical shifting is installed with front! The rotor diameter is 180mm, not the usual 185mm, raising issues of compatibility with non-Shimano caliper assemblies submersing... Wrench and you may also need a pair of pliers, rather a... Is a high-end product line with 8 and 11-speed hubs tools: an open end 10 mm and. The drive-side hub bolt until this is out of the slots, so I will include some builds shifter... Buy Shimano Nexus Inter-3 ( 3-speed ) Sturmey-Archer hub gives problems, it can almost always repaired. This Geared hub is a high-end product line with 8 and 11-speed hubs frame to the width. Has rebuilding information and middle gears are then better for acceleration and climbing, too happen, so can... Brake weighs in at 1390g, or 3lbs low enough, especially without cog...
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