Before applying for finance, please ensure you have read the information on eligability. Section 3c of the download document shows how it works. Hello, I have just got my Brompton and want to fit the hub dynamo. That means that in the top gear, youre losing ~15w through drivetrain inefficiencies when compared to the Rohloff. Alfine 8-speed Kit 725 Consider if affordable for you. Employee Owned, Since 1977. PayPal Credit: Terms and conditions apply. 0% Finance Over 500. You've been subscribed to our newsletter. Hi Ben, Sure, that will work to give you lower gearing. Yes, my kits fit to any Brompton for the B75 handlebars, the JTek shifter is the best one to use. If youre not sure where to begin, here are our top picks. Performance Cycling Limited trading as Tredz is registered in England and Wales 03398601. As this test was conducted under a different test protocol (higher cadence, higher power output, different measuring equipment etc), these results are not directly comparable but we can still get some sense for whether gearboxes are drastically less efficient. SALE PRICE 2373 .00 save 300 FINANCE from 75 Birdy City 8 Speed Nexus Cyan - Folding Bike Birdy City Enjoy excellent riding characteristics with the virtually maintenance-free Shimano Nexus 8-speed hub gear with coasting and high degree of efficiency. The 8-speed kits now come with a Sturmey thumb shifter as standard, which is much better on the Brompton bars than the usual Shimano Rapidfire shifters. Click here for more UK and international delivery information. In Stock. Brompton; Merida; Shop all brands. The seat is fully adjustable and the aluminium frame is extremely lightweight. The new 302% range puts it in the league of Shimanos well received Nexus 8 speed, but with only three hub gears there should be none of the drag associated with more complex multi-speed hubs like the Nexus. All of this comes at a cost, though, so belt drives are usually more expensive. Because the overall range of the Alfine 8-speed hub is slightly narrower than the SA 8-speed hub (306% against 325%), it means you effectively have an extra gear. At a power rate of 200 watts, there was less than 10 watts difference between the most common gearbox systems (Rohloff, Pinion and Shimano). hi Copyright 2023 Damian Harris Cycles. I've been an avid user of belt drive on my bikes for about 12 years now, and have clocked over 135,000km on these chain alternatives. This is similar to the effect of a dynamo hub generator (1-3% slower) when compared to a regular hub. The new rear triangle is included, it can have any paint finish you like. If I send my Brompton M3L to you for conversion, do you send back all the parts you remove too, such as the original rear triangle, shell, gears, cables etc? Creating the extension takes some thought. Could you put me on a wait list for the black wheel version when it becomes available?Many Thanks,Dennis. I dont think Ive ever tried the Di2 on M-type bars, but its a pretty small shifter, should be okay. 2008 saw upgrades to Brompton tyres (extra sticky shoulders for better cornering), brakes (lower friction caliper brakes) and suspension block (a range of hardness / softness options now available). Videos, Which Bicycle Gearbox Has The Highest Drive Efficiency? These bikes are increasingly popular for their convenience, smooth ride and low maintenance. : 132mm Colour: Silver Anodized. I need to stay close to 33 teeth to achieve the gear range of the original, which seems ideal for the rather hilly countryside around here. Reversing it would add about 1.5mm. Sep 10, 2020 #17 The Nexus 8 has a reported 3.09 range ratio, so wider than the new Nexus 5E; Registered Office: 1 Churchill Place, London E14 5HP. Depending on your Brompton, you might need a new chainset and/or chain, I can supply these if needed. The Alfine kit is about 700g heavier than the 6-speed, but the integral rack is about 200g lighter than the Brompton rack. Take our Bike Quiz tool to discover what type of bike you actually need. In Stock. For the 11-speed kits, I strongly recommend the Jtek shifter: Add Jtek 8-speed shifter - 50 Add Jtek 11-speed shifter - 70 Incidentally, the 6-speed parts taken from my Brompton fetched over 100 on eBay, after deducting the costs and PayPal commission, so the final cost of the upgrade will be 200 plus whatever I end up spending on the crankset and/or bottom bracket. Ive never tried matching the Water Blue it should be possible to get a pretty close match, but yes the other option is brushed stainless. Please note: Brompton bikes require that you fit a telescopic seatpost if your inside leg is greater than 35 inches (89cm). There may be circumstances beyond our control which cause delay and in such circumstances Thank you. Tab connector for Shimano front dynamo hub - Brilliant Bikes Do you have detail instructions for installation with the shipped conversion kits? Performance Cycling Limited trading as Tredz acts as a credit broker and offers credit products from Clydesdale Financial Services Limited trading as Barclays Partner Finance and PayPal (Europe) trading as PayPal Credit. Again, it wont be perfect, but 3mm difference between front and back doesnt seem to likely to be much of a problem. While there is usually a weight penalty to gearbox systems over derailleurs, this is negated by how easy they are to maintain, especially in poor cycling conditions. Rohloff, Pinion, Shimano, Pinion P1.18 vs. Rohloff Speedhub Gearbox Systems. I started looking around for alternatives. Does this 11 speed kit include with cog?what about front wheel, can you modify so we can put disc brake to? Discerning Cyclists expert reviewers spend hours testing and comparing cycling products so you dont have to. BOB Wheel Nuts For 3/8 x 26 (Shimano Nexus) :: 50.00 :: Family plet Posts: 34 March 2014 Mike, mine has been bad more or less from the start and has done about 2000 miles. For a video overview of folding bikes, including Brompton, see BikeRadars Cycle Show 08 video coverage. The cadence (pedalling speed) was set up at 60 RPM which provided the most consistent data. The Nexus and Alfine 8-speeds are more rugged than at least the older 7-speeds, but it have some well-known failure modes, and there are also well-known ways to prevent failure. Whats the weight difference from the standard brompton front wheel? Cheers. I.e. Read12 Reasons to Consider Shimano Nexus hub gears. Still not sure? a darker laquer than the standard version. Already have an account with us? my project is an Alfine Di2, 18/20 triangle & Fork, with integrated rack, 355 rims with Schwalbe 18*2.00 big apple, hope hydraulic brakes. Yes, no problem to ship to Singapore, I ship all over the world. Pay in 3 is a form of credit, may not be suitable for everyone. Shimano's Nexus Inter-8 hub has all the same benefits but with an extra gear for an even wider range, equivalent to an 11-34 cassette, so better for hillier terrain, although some of the gear steps are a little wider as a result. You might need new ones as part of a drivetrain upgrade, or because youve damaged yours in a crash. 2009 also promises a new saddle design and a new superlight, high quality front wheel option. Velonews has tested the drivetrain efficiency of both 1X and 2X drivetrains in the lab. The online Brompton Gear Calculator is fantastic. Shifters sit on your handlebars and are the levers you use to change gears. . While seemingly insignificant, this is a similar difference in resistance between a set of touring tyres with an off-roadtread (Schwalbe Marathon Mondial) and a set of road touring slicks (Schwalbe Marathon). Shimano Nexus 7 BikeRadar I didnt buy this as a kit, so the biggest challenge was to adapt the chain tensioner. Brompton has recently announced its widest range gear setup yet, the BWR Brompton Wide Ratio. Can you tell me approximate delivery time. Or I can do what I usually do to the brushed stainless ones which would make it ready for painting, but that wouldnt save any money. It's easy to return a product with our 365 day, hassle free returns. Alfine 11: 24 to 99 Occasionally, without notice, manufacturers change product design and/or specifications. For our standard service, we dispatch our goods with Royal Mail. Manufacturer : Sturmey Archer. no. Is the modified frame included and if so does this have a gloss finish as my bike is the standard Brompton Satin/Matt red (its a 2018 H3L). Gearbox efficiency can make a significant difference at the extremes (comparing the best and worst performer) but is much more negligible in the scheme of resistance. May I know what is the Di2 Kit come with for GBP500? The solution at the front may well be to fit a JIS taper compact double crankset and remove the outer chainring changing the fixing bolts and using washers to adjust the exact position of the inner ring to get the desired 41mm chainline. Does the 11 speed retain the Brompton crank/chainset and use their chainrings? Shimano Alfine hub gears can be fitted to a Brompton, using my custom rear triangles you can have an 8-speed or 11-speed with an optional disc brake. Can you mimic/recreate the raw laquer black edition on your triangles/ forks? Belt chains have a myriad of advantages over their more traditional, chain counterparts. The 8-speed kits now come with a Sturmey thumb shifter as standard, which is much better on the Brompton bars than the usual Shimano Rapidfire shifters. The kit includes a complete new rear wheel, new rear frame* in a colour of your choice, new chain tensioner, gear shifter, and fittings. While the data from the graph indicates the drivetrain efficiency for each gear, Ive averaged out the drivetrain efficiency across each gear range to come up with the following numbers: Singlespeed: 97% efficient (Drivetrain loss of 6w @ 200w). What Is The Speed Difference Between Gearboxes? (variable), Assumed credit limit 1,200.00. As you suggest, I dished the sprocket inwards the only option to avoid it fouling the frame. Shimano Nexus Inter-8 hub gears review - BikeRadar Over 100km, the 0.51km/h drop in speed from the Rohloff to the Pinion P1.18 will add 3 minutes and 15 seconds to your cycling time (1.7% slower). Even with all of those included, though, this remains one of the cheapest and highest quality folding bikes with a belt drive that youll find. Its not possible to have more than one sprocket on the Alfine hub. Nexus | Shimano Bike-us 05922378 Thanks. No problem to supply some spares too. You can recognise it with its blue strip. . I have toured this summer fully loaded with tent etc., it would be good to have extra gears for hills. Given the way the efficiency gradually reduces in two sections, its clear the hub engages more internal parts the closer you get to gear 4 and 8. originally I had an extra sprocket added, making it 3s sprockets, is this kit compatible for such settings? Knowing the speed difference, we can determine the time differences over the course of a typical touring day using Bike Calculator*. Thanks again, Exceptional customer support. Customer reviews and Q&As are disabled because you declined functional cookies. Is this electrically compatible with the wiring loom and lights that are already on a Brompton with a SON hub dynamo, or would everything have to be changed if this wheel were fitted? Its the motor, battery, holder, charger, cables, handlebar control, display, modified tensioner etc basically everything you need. Enter the Shimano Nexus Inter-8. Discerning Cyclist is a participant in the Amazon EU Associates Programme, an affiliate advertising programme designed to provide a means for sites to earn advertising fees by advertising and linking to amazon.co.uk. Andreas Oehler from online magazine FahrradZukunft conducted his own testing to find out the drivetrain efficiency between gearboxes, using a single-speed drivetrain as a benchmark. It also depends which shifters you get the JTek ones take up less space especially on the M-type bars. Thanks for your explanation of your thinking here. Rohloff : 94.5% efficient on average across 14 gears(Drivetrain loss of 11w @ 200w) Cycle to Work Scheme is not available on sale items. For this article, I will focus on the power rate of 200 watts as its in line with my other testing. Is it possible to make the rear frame in a Raw Lacquer? Account. Hub Gear Sprockets Guide | Technical Articles | SJS Cycles I normally fit a 50t chainset and 18t rear cog which gives: Bike Forums - 16 speed Brompton with shimano nexus 8 It might not sound like much, but folding bikes are supposed to be carried. 8-SPEED. For about US $1000 or 1000 you can get an 8-speed bike with a belt drivetrain that's fully decked out and ready to go. Pair of replacement Brompton brake pad inserts. Im keen on the Alfine 11. Keep an eye out for bikes with Shimano Nexus 8-speed hubs too, as these hubs are virtually identical to the Alfine 8-speed with the exception of the brake types available. Sign in to manage your newsletter preferences. The New Brompton Folding Bike Has 2.4 Tyres For Off-Road Terrain, Belts Are Now Better Than Chains On Bicycles (135,000km of Testing), Biking The Otherworldly Landscapes of the Jordan Bike Trail (Video). Our standard delivery service is FREE in the UK, regardless of the size and on all orders over 20. I have it in the seatpost of my road bike? You can see the Nuvinci 360 testing on this graph. Please note that bulky products and bikes shipped to outlying UK regions are excluded from free shipping. Two different test rigs were set up to measure both internally geared hubs and internal crank gearboxes. You can read the full internal hub test HERE and the internal crank test HERE. They facilitate our online retail, connect our social media and help analyse our traffic. 7.00 Quantity Add to cart Add to wishlist More info Brompton 12 tooth rear sprocket with Simano style splines For use with: Brompton single / two speed rear wheel (this sprocket comes as standard with the 12/16T sprocket set used on the 2 speed rear wheel) Brompton / Sturmey Archer BWR (wide ratio - market BWR on the hub) rear wheel.
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