Facebook Twitter LinkedIn Pinterest Bluesky Threads Hello vintage people. I'm hoping a date on this derailleur will help identify my bike, a "Sieger". 5 speed, non indexed. No model numbers visible without dismounting it. by stew_on_his_phone Bicycling Bike Bike Repair Biking Cycling Repair
Kooky_Narwhal8184 on September 16, 2025 8:28 am I’m not an expert, but I haven’t heard of Simplex in quite some time… But using plastic for some parts means there’s a limit on how old it could be… I’m guessing late 70’s to mid 80’s ?
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https://velobase.com/
I’m not an expert, but I haven’t heard of Simplex in quite some time… But using plastic for some parts means there’s a limit on how old it could be…
I’m guessing late 70’s to mid 80’s ?