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  • Cyclo / Perry Coaster
    this device Eventually I realised that the rear hub constituted a derailleur back pedal brake and this tension device allowed one to pedal backwards putting the required pressure on the brake to operate it This of course straightens the lower chain run under tension The resulting chain slack on the top run is taken up by the conversion The description below says that the pivoting cage pivots on the lower

    Original URL path: http://www.classiclightweights.co.uk/components/cyclo-perry.html (2016-02-09)
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  • Standard Cyclo
    14 to 28 teeth French Cyclo made an alloy version for 3 32 in 3 4 5 speed For setting up the Oppy a medium range deluxe ie chromed 3 speed 1 8 version the principle is the same except a smaller diameter lever cable is used 2 Dating British Cyclo s have the year stamped at the top of the outside of the jockey arm 3 Critical to good changing is chain length the bottom jockey wheel should be 30mm away from the spring when in bottom gear and position of mech on chainstay relative to large cog Even with a braze on bracket there should be some adjustment 4 The most common problem when riding is cable breakage usually at the mech end This is due to incorrect fitting In top and bottom the cable nipple should be be above the 3 and 9 0 clock position on the drum 5 Rear end adjusters are a good idea so that they wheel goes back exactly in the same position 6 Maintenance very simple apart from checking the cable position oil on the sliding shaft The mechs themselves are very durable Cyclo 2 speed gear Universal type Cyclo 3 speed gear braze on fitting Cyclo 4 speed gear new type with crossed cables Old type had the cable wound once around pulley 7 Setting Up 1 The position of the mech on the chainstay is determined by the size of the large sprocket as shown on the diagram 2 Adjust the throw of the mech in the same way as any other plunger type mech i e the top jockey wheel moves from under the centre of the large sprocket to centre of the small sprocket Use a screwdriver to adjust the throw by turning the spindle Once you

    Original URL path: http://www.classiclightweights.co.uk/standardcyclo.html (2016-02-09)
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  • Dacon hub-derailleur converter
    is a driver which replaces the Sturmey Archer driver and dust cover It takes Suntour New Winner sprockets so there is a good range of potential sizes It will take three sprockets with a standard axle and four sprockets with a long axle There is a piece about the Dacon in Tony Hadland s Sturmey book in which he implies it was in production in 1985 Below are three images

    Original URL path: http://www.classiclightweights.co.uk/components/dacon.html (2016-02-09)
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  • Huret gears
    and the Louison Bobet rear changer which has a second gear control cable which will adjust the tension on the rear changer This enables the rider to apply extra tension to prevent the chain jumping the cogs or in the case of the speed concious rider to reduce the tension to enable the chain to run through the gears with less friction Huret Louison Bobet 5 speed rear mech with

    Original URL path: http://www.classiclightweights.co.uk/huret.html (2016-02-09)
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  • Huret Louison Bobet
    Huret Louison Bobet Author and images Peter Lowry The Huret Louison Bobet has two separate cables operated by two separate levers twin levers as per the picture the larger lever changes the gear and the smaller lever adjusts the chain tension This Huret is fitted to a 1950 1 Ephgrave The front changer is independent and operated by the fore and aft lever Twin rear cable eyes needed for this

    Original URL path: http://www.classiclightweights.co.uk/components/huret-bobet-comp.html (2016-02-09)
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  • 1946 Huret Course Competition Special
    a two wire control operating and tensioning cables and with the tensioning spring at the downtube control rather than on the derailleur as on the Competition Standard model Downtube mounted control consists of a longer derailleur control lever and a shorter tension control lever The small tensioning lever makes operation a bit of a chore It shifts okay over four gears but needs a bit more tweaking before it will shift five The Brown Brothers Catalogue 1952 describes the gear Single roller type similar to the Competition Standard model suitable for 3 4 or 5 speed free wheels 1 8 or 3 32 by adjustment Specially adapted for racing by the addition of a chain tension lever incorporated into the change lever control This gear is ideal with front derailleur and double chain wheel The catalogue also states By using spacing washers each side of the tension roller the cages are suitable for either 1 8 or 3 32 chain Click on images for larger detail Rear changer with tension cable to extension of the cage plate Gear levers showing long lever for rear change plus short lever for tension adjustment with the tension spring Another view of rear changer

    Original URL path: http://www.classiclightweights.co.uk/components/huret-phil-comp.html (2016-02-09)
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  • Hybrid Hub/Derailleur Gears
    fouling the chain cage and need to be adjustable down to the narrow range of travel necessary for just 2 or 3 speeds Unsurprisingly Cyclo pushed their own mechanisms and as late as 1981 were still marketing a conversion kit featuring the Cyclo Benelux Mark 7 changer dating from 1957 which I used in the early 60 s Assuming you start with a built up hub gear wheel fitting a Cyclo conversion should be straightforward The above link to the Sturmey Archer Heritage Site provides basic instructions Cyclo 2 and 3 speed conversion blocks turn up regularly on Ebay or can usually be purchased from V CC members dealing in vintage components as listed in the Directory of Services in the centre pages of the current 2007 08 Yearbook The same goes for a suitable gear mechanism Because Cyclo marketed the Mark 7 derailleur as part of their conversion kit for so long this mechanism is an appropriate choice for any post 1957 cycle Fitting the block can be as simple as removing the circlip on the splined SA driver taking off the single sprocket sliding on the 2 or 3 speed replacment and replacing the circlip Note that the dust cap should be left in position For the 3 speed conversion it is recommended to fit a 1 8 inch axle washer to each side to give extra width and stop the smallest sprocket fouling the frame This will increase the over locknut distance by just over 6 mm and may require you to fit a longer axle replacing the standard 5 inch axle with a 6 inch one For everything to work since the SA hub is some 110 or 112 mm across the lock nuts your rear dropout width should be in the range 115 to 120 mm If you are lucky no dishing or re dishing will be necessary In the worst case you may need a very small amount of re dishing Needless to say things are likely to be easier with the 2 speed conversion reducing the likelihood that you will need to fit a longer axle and or re dish the wheel Please take a look at my 1949 Gillott Spearpoint fitted with a 12 speed hybrid system ranging from 32 to 86 inches I am indebted to my friend Geoff Cook for his assistance in putting this hybrid gearing system together The hub is a very nice 1948 FW 4 speed obtained from Rob Burton in Bognor Regis The block is a Cyclo 3 speed 16 19 23T obtained from Nick Tithecott of H Lloyd Cycles Penrith who also supplied the 1952 Cyclo Benelux Sport gear mechanism The latter is not quite period correct but my plans to use a 1948 Cyclo Super Olympic Professional were scuppered by its very limited capacity just four teeth by virtue of its single roller design Geoff Cook supplied the long SA axle from his stock made in the 60 s and 70 s for Moultons

    Original URL path: http://www.classiclightweights.co.uk/hybrid-hd.html (2016-02-09)
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  • Hybrid gearing
    and 50 s on non touring lightweight bikes This combination gives me a top gear of 88 7 I can t remember the last time I used it in fact I believe that sprocket is now covered in cobwebs and a bottom gear of 40 5 which I use very frequently but is not quite low enough to use on the lower slopes of the Mendips where I live I know I know a couple of granny rings would solve that problem but as I said earlier aesthetically they just don t look right My two lighweights that are fitted with Sturmey Archer FM s have a combination of a 46 toothed chainring and a 22 toothed sprocket giving gear ratios of 64 1 to 37 7 The 22 sprocket looks a little on the large size but I can live with it and I can also live with the ratios but as tempus fugit I will need to find lower gears I m aware of the Cyclo Converter of combining a two speed derailleur to a hub gear and in fact I do believe that someone does a five speed derailleur combined with a hub gear But all these conversions look very agricultural in my opinon And of course you need to fit two gear levers Reading issue No 343 of the V CC s News and Views I had a Eureka moment I read Robin Walker s article Hybrid Gearing Another Solution Robin had fitted his hub geared bike with two 3 32 chainwheels 46 36 a 3 32 a 19 tooth rear sprocket a Cyclo Osgear Chain tensioner and a Cyclo Benelux rod operated front changer BINGO I couldn t wait to get started I spoke to Robin on the phone and he informed that the conversion

    Original URL path: http://www.classiclightweights.co.uk/hybrid-lowry.html (2016-02-09)
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