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Choosing a very special crank
A CRANKSET FOR MY UTOPIA KRANICH
My crank must *be elegantly slender, *suit a 1935-1955 style of bike, *offer a wide tread (high Q-factor), *have a 54mm chainline (Rohloff), *fit square taper (preferably JIS) axle, *use a standard 22mm extractor, *take a 9/16in pedal, *be 170mm long (or 167.5mm), *employ a 50.4mm BCD in order to *work with the existing chaincase (1in/25mm deep, max). *attach a chain-ring/wheel/disk with 38 teeth **** Clearly the narrow-Q TA Pro 5 Vis/Stronglight 49D/Sugino PX/Nervar/VO Grand Cru copy won't do; I've already looked into them closely and at best they would require a very thick spacer between the drive plate and the chaindisk, and very likely a special BB of over 140mm axle length too for frame and chaincase clearance and tread width. We're now getting into offsets the original designers didn't allow for, and into unnecessary Phil-custom money for what in the end is about appearances. **** So which crank can I have new or new old stock (NOS) with a 50.4 BCD that looks as good as a 49D or a Maxy but has a modern MTB/Rohloff chainline and tread? Thanks for your input. Andre Jute http://www.audio-talk.co.uk/fiultra/Andre%20Jute's%20Utopia%20Kranich.pdf |
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Thermos for Jutie WAS Choosing a very special crank
Oh I'm picking out a thermos for Jute
not an ordinary thermos for Jute but the extra best thermos you can buy with vinyl and stripes and a cup built right in I'm picking out a thermos for Jute and maybe a barometer too and what else can I buy so on me you'll rely a rear end thermometer too |
#3
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Thermos for Jutie WAS Choosing a very special crank
On Mar 3, 7:26*am, "D'ohBoy" wrote:
Oh I'm picking out a thermos for Jute not an ordinary thermos for Jute but the extra best thermos you can buy with vinyl and stripes and a cup built right in I'm picking out a thermos for Jute and maybe a barometer too and what else can I buy so on me you'll rely a rear end thermometer too Lord loves a workin' man; don't trust whitey; see a doctor and get rid of it. |
#4
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Choosing a very special crank
On Mar 3, 1:10*am, Andre Jute wrote:
A CRANKSET FOR MY UTOPIA KRANICH My crank must *be elegantly slender, *suit a 1935-1955 style of bike, *offer a wide tread (high Q-factor), *have a 54mm chainline (Rohloff), *fit square taper (preferably JIS) axle, *use a standard 22mm extractor, *take a 9/16in pedal, *be 170mm long (or 167.5mm), *employ a 50.4mm BCD in order to *work with the existing chaincase (1in/25mm deep, max). *attach a chain-ring/wheel/disk with 38 teeth **** Clearly the narrow-Q TA Pro 5 Vis/Stronglight 49D/Sugino PX/Nervar/VO Grand Cru copy won't do; I've already looked into them closely and at best they would require a very thick spacer between the drive plate and the chaindisk, and very likely a special BB of over 140mm axle length too for frame and chaincase clearance and tread width. We're now getting into offsets the original designers didn't allow for, and into unnecessary Phil-custom money for what in the end is about appearances. **** So which crank can I have new or new old stock (NOS) with a 50.4 BCD that looks as good as a 49D or a Maxy but has a modern MTB/Rohloff chainline and tread? Thanks for your input. Andre Jute *http://www.audio-talk.co.uk/fiultra/Andre%20Jute's%20Utopia%20Kranich.... Lou Holtman wrote in another thread (that one's on cotter pins!): Andre is your crankset worn out already? No? Leave it. Don't get that 'vintage' crap. The crankset on my Kranich is a long way from being worn out. But it is an inexpensive Indian Amar Onyx, selected by someone else because it was instantly available and steel and black and thinner than the Utopia standard and only fitment for 38T Rohloff installations of the ugly, fat-armed Sugino Mighty. But the Amar, while reasonably slender, is a bit amorphously styled. So I want something more positively styled. It is the last element in fitting out my bike and I'm not giving up on it. I came to what Lou calls the 'vintage crap' because I want to use whatever crank I get for aesthetic reasons with the Country chaincase, which has a very small opening for the crank-arm to exit, and is so shallow front to back that the spider will have to spin in that opening. So the 50.4mm BCD on the TA Cyclotouriste spider started looking good; I like the style of those cranks anyway. But that narrow TA Q factor would kill my knees, and anyway on my 60mm balloon-tyred bike the chainstay clearance with the widest BB I will consider fitting (131mm) will still be very dicey. Even worse, it is possible that there is not enough space between outer chainring and crank of the TA to fit a chain case... At the moment I'm looking at the Middleburn RS7 Uno, which has the combined spider/crankring fixed by a threaded retainer ring that would probably not interfere with my chaincase. The Middleburn appears to be finished for rough work but I don't mind refinishing and polishing it myself. The basic styling is attractive. Unfortunately, just as I become interested, Middleburn has let their old models run out of stock in order to launch the new, proprietary external BB, model that they've been promising for years... Aargh! http://www.middleburn.co.uk/ Incidentally, I looked at Middleburn two years ago while I was investigating the Kranich, and didn't order a set of Middleburn cranks at that time because they didn't yet have the 38 tooth chainwheel that I wanted to use with my Rohloff setup; they now have it in a 'hardcote' version for the Uno too. Andre Jute The only diet that works is exercise |
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