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sure this was done on some bikes back in the 80's/90's anyway so is not new
someone on here was trying to put gears on a bmx - can't remember who at the mo but they were looking to do a sturmey archer-type jobthere's probably a good reason that's a 'one-off'
Quote from: harorider on February 14, 2011, 08:46 PMsure this was done on some bikes back in the 80's/90's anyway so is not new it was paul ,,,, think they did two speed ,,,,, hole shot for a quicker start ,,then change gear theres a guy on here running one ,and one using it at mk http://martin-bike.com/BikeBuilder/Cranks%20&%20Drivetrain/slides/holeshot1.html
Quote from: griff on February 14, 2011, 08:03 PMsomeone on here was trying to put gears on a bmx - can't remember who at the mo but they were looking to do a sturmey archer-type jobthere's probably a good reason that's a 'one-off' Thats me!!5 speed sturmey archer. To make a 20" more of a tourer.Sounds crazy and it probably is..................but if we didn't experiment then we'd be stuck with the penny farthing!!Plus its a laff!!!
Quote from: the gay pensioner on February 14, 2011, 09:58 PMQuote from: harorider on February 14, 2011, 08:46 PMsure this was done on some bikes back in the 80's/90's anyway so is not new it was paul ,,,, think they did two speed ,,,,, hole shot for a quicker start ,,then change gear theres a guy on here running one ,and one using it at mk http://martin-bike.com/BikeBuilder/Cranks%20&%20Drivetrain/slides/holeshot1.htmlGlen ,,Bigplinky (Andy Lincoln ) has a Browning 2 gear set up on his Maximum It a double front chainringset up though , rather than a rear derailleur you've shown I've had a go and it is fooking top quality smooth , very nice technical mechanism from the early 80's It won a BOTM a few years ago I think
Here's a mid school bmx gearing system running off an mtb derailleur.