Shimano s precise manufacturing abilities construct an internal hub that rotates with significantly less drag than previous models. Get the best deals on shimano tricycle bicycle hubs when you shop the largest. If shimano grease or a shimano lubrication kit is not used, problems such as a malfunction in gear shifting may occur. Engage the teeth of the planet pinion in carrier unit 1 with the teeth of the driver unit, and then press in the driver unit while turning it slightly to the left and right. Shimano nexus is a brand of bicycle components which includes products such as epicyclical gear hubs, cranksets, shifters, brake levers, hub brakes, hub dynamos, and a cpu for automatically changing gears. Shimano nexus inter 8 hub wet weather cassette joint. What is the difference between the standard sg8r20 and the premium inter 8 sg8r25. Also it always generates the same braking force regardless of gear position to actualize comfortable and reliable riding. Like the shimano nexus 7 and alfine 11, it has a near unity gear ratio achieved by gearing down and then back up. Shimano rear internally geared bicycle hubs for sale ebay. Hi all, i just picked up a bike which came with a 7 speed shimano hub gear with coaster brake, a shimano nexus sg7c22 inter 7 hub. Shimano alfinenexus internal gear hub parts sg700 rotor spacer alfine sg.
There are other nexus7 hubs that seem exactly the same, e. Be sure to follow the instructions provided in the manuals when installing the product. General information on installation and adjustment of newer shimano nexus 7 speed hubs is in the dealers manual. Dec 15, 2018 home bicycle wheels rear hub nexus shimano internal the golden wrench servicing of an internally geared hub repair stuck gear hub on the way into a an internal geared shimano internal gear hub service.
Shimano nexus 3 clicking freewheelmechanismlike noise. The gear changes are more consistent and there is not longer any play in the. About shimano shimano practices good local citizenship, pursues continued access to those areas that are enjoyed by outdoor enthusiasts, and is committed to minimizing our impact on the environment. Shimano nexus inter 8 igh maintenance all of the diagrams that ive seen require dismantling the hub and its not someting that id like to do on my own. Oct 17, 2007 the most sold internal geared hub in the world is now online on hubstripping with a lot of top secret informations. Hold the two bevelled surfaces of the hub axle on the brake arm side in a vice and remove the dust cap with a screwdriver. Turn the brake arm unit upside down and hold the two bevelled surfaces of the hub axle on the sprocket side in a vice.
How important do you think it is to use shimano internal hub, 21062012 help with igh nexus 7 speed sg7r40 shimano nexus inter 7 i also found the complete user manual for this exact hub and brake. Shimano nexus 7 speed hub wcoaster brake inter 7 hub. Hello everyone and sorry for my english, i am trying to fix a bike which has no shifter on the handlebar and on the back wheel has a shimano nexus sg7c25 7 speed, i am trying to figure out how to install a cable so i can change gears with a shifter that i will buy. Shimano nexus internally geared hub inter 3 sd revo shifter roller brake details about accessories spare parts for nexus 7 without collar chainring sprocket 2091601910 shimano internal gear hub service. Many technical advances have been achieved, like incorporating shimanos unique gear change support mechanism that makes a real low effort shifting.
I own two, one of them has several thousand trouble free miles on it. Internal shifting rear hubs electric bikes in california. It actualizes the braking force to meet the iso 4210 standard. Bi just got my 29 rigid bike set up with a shimano nexus 8 red band gearhub, sg8r25vs, with no rollerbrake. The new inter 8 hub also incorporates a closer gear ratio allowing a more. Shimano inter 7 sg7r40, shimano inter 7 sg7c21, shimano inter 7 sg7r41, shimano. There is so much information about the shimano nexus inter8 hub that the page is split into two parts. For carrying out maintenance, the use of shimano internal geared hub. Shimanos precise manufacturing abilities construct an internal hub that rotates with significantly less drag than previous models.
When necessary, i convert shimano s data into useful spoke calculation dimensions with some simple arithmetic, and factor in 3mm thick hub flanges an approximation. Nexus 7, we assume that each of the sun gears can independently be to perform maintenance on the 3, 7, 8speed nexus and 8speed alfine hubs, the internal unit first shimano recommends performing maintenance on an. When necessary, i convert shimano s data into useful spoke calculation dimensions with some simple arithmetic, and factor in. C6000 series the nexus 8speed system delivers a high level of design, quality and function. How to install a shifting cable to a shimano nexus 7 speed. I previously wrote about the problems with my shimano 3speed hub here and here. If the wheel becomes stiff and difficult to turn, lubricate it. Neither the shop nor shimano used enough grease and oil for nw weather. This is the premium level gearhub that is purportedly rated for offroad use. Shimano hub gear spares hub spares wheels sjs cycles. Turn the brake arm unit upside down and hold the two bevelled surfaces of. Shimano nexus internal geared rear hub coaster brake o.
Shimano nexus internally geared hub inter 7 7 speed revo shifter roller brake. Nexus inter 8 bicycle accessories pdf manual download. Shimano internal gear hub service aarons bicycle repair. Shimano nexus inter l hub dynamo hub dynamo hub dynamo switch. Turn the shift mechanism locking to the left and the shift assembly slides right off. With most shimano internally geared hubs, grease is used to lubricate moving parts. Home bicycle wheels rear hub nexus shimano internal the golden wrench servicing of an internally geared hub repair stuck gear hub on the way into a an internal geared shimano internal gear hub service. Which is considered the better in terms of reliability. I am trying to fix a bike which has no shifter on the handlebar and on the back wheel has a shimano nexus sg7c25 7 speed, i am trying to figure out how to install a cable so i can change gears with a shifter that i will buy. I recently had the shifter mechanism replaced for my nexus 3speed and still i cannot get first gear.
The slc3000 shift lever is compatible with the shimano nexus inter 7 internal geared hub. Shimano s nexus inter 8 hub has all the same benefits but with an extra gear for an even wider range, equivalent to an 14 cassette, so better for hillier terrain, although some of the gear steps are a little wider as a result. The weakest part so far seems to the plastic and metal cassette joint. Shimano nexus sg8r20 8speed internally geared hub with roller brake this hub was ridden less than one year in seattle. This shopping feature will continue to load items when the enter key is pressed. Shimano nexus inter7 complete disassembly manual mar 9, 2012. Taylor wheels 28inch bike rear wheel zac2000 with nexus inter 8 62219 black. The greatest document is the service manual in german of the shimano nexus inter 8 which is equivalent to the alfine hub.
View and download shimano nexus inter8 dealers manual online. Close ratio wider range the new inter 8 hub has increased its gear ratio to 307%, compared to 244% of the current inter 7 hub. It also includes shimano s optical gear display, which shows riders what gear position is selected while riding. So a 7 speed hub appeals, same visual simplicity, maintenance, etc. The shimano nexus coaster brake is operated by pedaling backward in a similar way as ordinary types. Shimano nexus sb8s20 revotwist shifterbrake lever, woptical gear display. There are other nexus 7 hubs that seem exactly the same, e.
Just got my custom sapim 15g spokes yesterday from j. View online or download shimano nexus inter 7 dealers manual. How to fit gear cassette to a shimano nexus 7 nexus 8 hub. There have been some improvements however as a result of this change. Nexus is a family of parts, of which the nexus inter 7 seven speed hub is one. Shimano nexus 3speed hub problems bicycles in newcastle. Universal cycles shimano alfinenexus internal gear hub. The shifter is damaged beyond repair though and ive found an exact replacement, but my question is can i use a different 7 speed nexus shifter with this specific hub. The third version of the nexus inter7 coaster brake hub. The table links to current shimano documents, but also to documents generated outside shimano, or which shimano no longer offers. Nexus inter8 bicycle accessories pdf manual download. In order to navigate out of this carousel please use your heading shortcut key to navigate to the next or previous heading. This new 5speed doesnt seem to have a direct drive gear. In the basic instructions below we show the main points for attention.
Shimano nexus inter7 mm rear hub dimensions freespoke. Hold the two bevelled surfaces of the hub axle on the sprocket side in a vice. A big step down to the lowest gear isnt a bad way to do things the shimano 11 and sturmey 8 both have big steps down to their lowest gear ratio. Technical information about shimano nexus 7speed internalgear hubs. Shimano sg7c26 nexus inter7 coaster brake hub parts list. Close ratio wider range the new inter8 hub has increased its gear ratio to 307%, compared to 244% of the current inter 7 hub. The lever features a loweffort rotational shift action that doesnt depend on finger strength and allows riders to keep their hands on the handlebar while shifting. Kontermutter einstellmutter 15 sg7r40 sg7r41 brim41r hinweis. Unhook it from its groove and get a screwdriver under it. Shimano nexus 7 speed hub shifter compatibility lfgss. Shimano nexus 7 gang nabenschaltung einstellen youtube.
By november 2006, the nexus range came in several ranges inter 3, inter 7 and inter 8 providing 3, 7 and 8 speed models respectively. Wheelbuilders are interested in the distance from the midpoint between locknut faces to the middle of the flange not the inside or outside face. This manual describes complete disassembly and assembly of the shimano nexus 7. As the name suggests, there are eight gears packed into a hub weighing about 1. View and download shimano nexus inter 8 dealers manual online. There is no standard shimano manual giving names to all these parts. Shimano nexus internal geared hub coaster brake 7speed. Get the best deals on shimano rear internally geared bicycle hubs when you shop the largest online selection at.
When we get one of these hubs from shimano, or on a built bike, they come packed full of grease. The most sold internal geared hub in the world is now online on hubstripping with a lot of top secret informations. Teil 1 shimano nexus 7 gang detaillierte demontage mit. View online or download shimano nexus inter7 dealers manual. The sprocket wheel on my shimano nexus 7 sgr46 no longer rotates freely when freewheeling my bike. The most comprehensive range of quality cycle components, spares and accessories in the world with global delivery.
This was originally paired with a shimano sb7s40 brake levertwist gear shifter combo unit. The price difference would indicate the alfine hub to be the better, but i cant see why and is it worth the extra. Also, for carrying out maintenance, the use of shimano internal geared hub grease or a lubrication kit is recommended. Shimano bicycle internally geared hub parts modern bike. Shimano nexus sgc30007r 7 speed internally geared 36h rear hub. Jan 17, 2011 for the most part, the unit is sealed off the elements, you can use them in a belt drive system, they shift really fast, etc. Shimano alfinenexus internal gear hub parts inter 3 sg3d55 push rod for 192mm axle. The same 4019 ratio gives a bottom gear as low as 30 inches and. Shimano nexus 7 speed hub whipower roller brake inter 7 hub brim41r inter m brake. Shimano nexus sg7r50 7 speed roller brake internally geared hub nexus 7 speed hub gear range.
Owners manual for the shimano sg7c16 and sg7c18 nexus inter7 hubs. I guess there is some pieces missing, i enclose some photos where you can take a look. The series is primarily aimed at the comfort market such as urban commuters and tourers, and as such is not made to withstand the rigours of offroad or mountain biking. This manual describes complete disassembly and assembly of the shimano nexus 7 speed hub sg7r45 inter7. The table of contents below is a clickable image map. There are a lot pictures which show all the hub details. Its uniqueness is that braking power transmitted to the wheel directly for the shimano nexus internal coaster brake is independent of the gear shifting mechanism built into the hub. The new inter8 hub also incorporates a closer gear ratio allowing a more. Did you know that your inter 8 loves to bathe in oil. Yritin eilen avata vanhan pyorani nexus 7 takanapaa, mutta tuli tenkkapoo, en saanut sita auki. Shimano sg7c16 and sg7c18 owners manual vancruisers. Shimano nexus sgc30007r 7speed internally geared 36h rear hub.
If parts such as bolts and nuts become loose or dam. Hold the two bevelled surfaces of the hub axle on the brake arm side in a vice and remove. Shimano alfine 8speed internal geared bicycle disc brake hub sgs70018 black 36h 5x187mm 5. How to fit the gear cassette to a shimano nexus 7 nexus 8 hub. It is recommended to use genuine shimano parts only.
Shimano nexus sg7r50 7speed roller brake internally geared hub nexus 7speed hub gear range. Internal gear hubs edit shimano nexus inter 3 hub laced with spokes and mounted on a bicycle. Shimano nexus 7 speed hub id like to build up a single speed commuter for my mile hilly rural rides but im not strong or patient enough depending on gearing to stick with one gear. Shimano nexus inter8 hub wet weather cassette joint.
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