![]() +1 to an SRAM PC1 chain - fit and forget. I recently changed my rear hub from an FW to a 5 speed S5 and I changed the ring and sprocket to 50t front and 16t rear. 46t might also be okay, but if you want to lower your gear range, it might be safer to keep a larger sprocket at the front and put a bigger sprocket on the back to ensure the chain clears the brake. DATE: 1997 COUNTRY: UNITED KINGDOM WEIGHT: 10,9 KG / 23,98 LB FRAME HEIGHT: 48 CM / 18,9 INCH GEARS: 2 x 9, Shimano Ultegra CONDITION: 1 - 2 - designed by British inventor Alex Moulton - the stainless steel refers to the aerospace - using technics from the aircraft construction for brazing the extremely tiny tubes - result is a graceful (steel) space-frame design - a thoroughbred small-wheel. When I first put the new chainset on my Deluxe, I used a 48t front, 14t rear and there were no problems. It doesn't really matter what size chainring you use at the front (or sprocket at the back), but just be aware that if the front chainring is too small, the chain will hit the rear brake. Qucs intentionally uses its own SPICE incompatible simulation kernel Qucsator. It merges the power of SPICE and the simplicity of the Qucs GUI. The purpose of the Qucs-S subproject is to use free SPICE circuit simulation kernels with the Qucs GUI. Two sturmey sprocket spacers do the trick nicely. Qucs-S was forked from the Qucs cross-platform circuit simulator in 2017. You should also be aware that the bottom bracket shell on F-frame Moultons is offset to the left, so you need to add about 3mm of spacers on drive side bottom bracket cups. Don't forget that you can also adjust the chainline on the Sturmey hub by altering the order of the sprocket and the two sprocket spacers - that gives you about +/- 3mm adjustment. I used an old 1980's SR alloy chainset on mine and a 113mm bottom bracket was fine. ![]() I was guess you would need a bottom bracket somewhere between 110 and 115mm, depending on the chainset you use. Cottered chainsets like the type originally fitted to the Moulton required much longer axles than cotterless chainsets. IMO a 120mm bottom bracket axle is way too long for a modern chainset with a single chainring. ![]() Hi, I updated my 1965 Moulton Deluxe with more modern (and lightweight!) components last year.
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