German City bike with a derailleur and internal hub!Hi Low range
01-14-23, 11:42 AM
#26
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in this case the wall thickness of the feature cut and that of the nozzle cut appears to be comparable
generally, with bulge-formed heads the feature shores are thin and somewhat indistinct as compared with the nozzle cut ones
Germany did employ a good measure of Agrati bulge-formed heads on ordinary cycles for several decades
here is a closeup of an Agrati "AM" pattern bulge-formed head on a Chiorda built Legnano to illustrate the difference between it and a true three-piece head -
for Asian machines the main producer of bulge-formed heads is the Nikko-Sangyo firm
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Last edited by juvela; 01-14-23 at 11:43 AM. Reason: spellin'
01-14-23, 03:41 PM
#27
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Thread Starter
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garryg -
in case you are curious as to date it is possible the Weinmann 605 calipers may carry a marking on the backside of the caliper arms
if present, it will be in the form of a clock face -
if not present it just means cycle manufactured prior to introduction of this marking system
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thank you so much for sharing this most interesting cycle with the forum
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garryg -
in case you are curious as to date it is possible the Weinmann 605 calipers may carry a marking on the backside of the caliper arms
if present, it will be in the form of a clock face -
if not present it just means cycle manufactured prior to introduction of this marking system
---
thank you so much for sharing this most interesting cycle with the forum
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Thanks for providing so much insight Juvela
01-15-23, 08:03 AM
#28
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dating addendum(b) -
other spots to check for marking:
gear block
hub barrels
portion of seat post down inside seat tube
portion of handlebar stem down inside steerer
right end of handlebar beneath handgrip
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since the derailleur is a Sachs-Huret item it may exhibit the Huret date marking system begun in 1978
this is a marking of four numbers found on the backside of the derailleur's inner parallelogram plate
-
in this system the first two numbers indicate the week of the year and the second two numbers indicate the year
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dating addendum(b) -
other spots to check for marking:
gear block
hub barrels
portion of seat post down inside seat tube
portion of handlebar stem down inside steerer
right end of handlebar beneath handgrip
---
since the derailleur is a Sachs-Huret item it may exhibit the Huret date marking system begun in 1978
this is a marking of four numbers found on the backside of the derailleur's inner parallelogram plate
-
in this system the first two numbers indicate the week of the year and the second two numbers indicate the year
-----
01-15-23, 08:39 AM
#29
Senior Member
Looked at a Nexus also at one point. Nice, but I decided just to stay with a convential FD/RD instead.
FWIW: Microshift does make a 8-speed drop bar brake/shift lever for the Alfine-8. I corresponded with their tech support, and they say it also works with the Nexus - just with reverse shift logic compared to the Alfine (highest becomes lowest and vice versa). But I don't think they make a left brake/shift lever compatible with a Campy triple.
Gotta ask, though: why the RD vice a dedicated chain-tensioner?
OK, now back to the regularly-scheduled discussion of the Patria/Sachs Orbit city bike.
01-15-23, 08:43 AM
#30
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Nice setup. Same concept, but transposed gearing (internal 8/external 3) vice SA's rig.
Looked at a Nexus also at one point. Nice, but I decided just to stay with a convential FD/RD instead.
FWIW: Microshift does make a 8-speed drop bar brake/shift lever for the Alfine-8. I corresponded with their tech support, and they say it also works with the Nexus - just with reverse shift logic compared to the Alfine (highest becomes lowest and vice versa). But I don't think they make a left brake/shift lever compatible with a Campy triple.
Gotta ask, though: why the RD vice a dedicated chain-tensioner?
OK, now back to the regularly-scheduled discussion of the Patria/Sachs Orbit city bike.
Looked at a Nexus also at one point. Nice, but I decided just to stay with a convential FD/RD instead.
FWIW: Microshift does make a 8-speed drop bar brake/shift lever for the Alfine-8. I corresponded with their tech support, and they say it also works with the Nexus - just with reverse shift logic compared to the Alfine (highest becomes lowest and vice versa). But I don't think they make a left brake/shift lever compatible with a Campy triple.
Gotta ask, though: why the RD vice a dedicated chain-tensioner?
OK, now back to the regularly-scheduled discussion of the Patria/Sachs Orbit city bike.
__________________
“One morning you wake up, the girl is gone, the bikes are gone, all that's left behind is a pair of old tires and a tube of tubular glue, all squeezed out"
Sugar "Kane" Kowalczyk
“One morning you wake up, the girl is gone, the bikes are gone, all that's left behind is a pair of old tires and a tube of tubular glue, all squeezed out"
Sugar "Kane" Kowalczyk
01-15-23, 08:45 AM
#31
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01-16-23, 08:10 PM
#32
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Thread Starter
01-17-23, 02:00 PM
#33
Senior Member
Interesting gear set up. I was not even aware of the 2x6 Sachs-Huret Commander with the internal gear chain on the left. But I have been a big fan of the later Sachs/SRAM Spectro 3x7 with a 3 speed internal hub and 7 speed derailleur. Great for inner city traffic with lots of stop and go. I actually prefer this setup over a front derailleur and I still have three bikes with that setup. One German bike and 2 x BikeE recumbent bikes.
