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| Hack saw and a gas bottle, whimsical bicycle project! |
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| doubletop:
--- Quote from: John Hill on May 21, 2011, 09:06:50 PM ---................. I do have to manually move the chain and adjust the chain length. I expect once I find the appropriate ratio I will be leaving it on that as a single speed bike. There is a wheel with a 3 speed hub gear on my junk pile and that might be an alternative --- End quote --- If you rig up some sort of idler and tensioner you won't need to adjust the chain length and then have the option of any of the 15 ratios, albeit you will need to get off and get you hands dirty to change gear. When you are hauling that lathe around you can have a low ratio. Pete |
| John Hill:
Dont think the idea hasnt cross my mind Pete! I do have the tensioning part of the derailer I could use.. :coffee: |
| doubletop:
With the single speed thing that is going on at the moment the cyclists use these to convert their bikes. http://www.torpedo7.co.nz/torpedo7/catalogindexsearch.do?org.apache.struts.taglib.html.TOKEN=eaa989514646d10378265c0486638e58&formAction=search&searchString=tensioner&brandString= Of course it's got to be a DIY job with the bits you have Pete |
| andyf:
--- Quote from: John Hill on May 21, 2011, 09:06:50 PM ---.....There is a wheel with a 3 speed hub gear on my junk pile and that might be an alternative --- End quote --- I've got a 3-speed Sturmey Archer hub gear on the 35 year old bone-shaker I use for shopping, John. They are pretty bomb-proof, so if the wheel is the right size for your frame it might be worth trying. I doubt you will be competing in the Tour de France on your bakfiets, so most of the ratios offered on a fancy derailleur could be a bit redundant. One ratio for puffing uphill, one for on the flat and one for racing downhill with the wind in your hair (if any) should be enough. Andy |
| Baldrocker:
Been toying with the idea of a 3-speed Sturmey Archer with a 3 ring front de-railler on my roundtuit electric trike, anyone got any thoughts? br |
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